阅读说明：本技术 一种煤粉喷头结构 (Pulverized coal spray head structure ) 是由 李国良 赵玉军 于 2021-09-09 设计创作，主要内容包括：本发明公开了一种煤粉喷头结构,涉及喷煤设备技术领域,包括喷管、锥块、支撑杆、升降机构,喷管内设有尖端朝上的锥块,锥块的下端设有支撑杆,支撑杆通过升降机构与喷管的管壁连接,当支撑杆下降时,锥块的侧壁与喷管的管口边沿之间的距离增大,煤粉喷出量增大,当支撑杆上升时,锥块的侧壁与喷管的管口边沿之间的距离减小,煤粉喷出量减小。本发明能够提高煤粉与空气中氧气的接触充分性,来让煤粉更充分燃烧,提高了煤粉利用率,节省了煤粉消耗。(The invention discloses a pulverized coal nozzle structure, which relates to the technical field of coal injection equipment and comprises a spray pipe, a conical block, a supporting rod and a lifting mechanism, wherein the conical block with an upward tip end is arranged in the spray pipe, the supporting rod is arranged at the lower end of the conical block and is connected with the pipe wall of the spray pipe through the lifting mechanism, when the supporting rod descends, the distance between the side wall of the conical block and the edge of the pipe orifice of the spray pipe is increased, the pulverized coal ejection amount is increased, when the supporting rod ascends, the distance between the side wall of the conical block and the edge of the pipe orifice of the spray pipe is reduced, and the pulverized coal ejection amount is reduced. The invention can improve the contact sufficiency of the coal dust and oxygen in the air, so that the coal dust can be more fully combusted, the utilization rate of the coal dust is improved, and the consumption of the coal dust is saved.)

1. The utility model provides a buggy shower nozzle structure, includes the spray tube, its characterized in that still includes awl piece, bracing piece, elevating system, be equipped with most advanced upward awl piece in the spray tube, the lower extreme of awl piece is equipped with the bracing piece, and the bracing piece passes through the pipe wall connection of elevating system with the spray tube, and when the bracing piece rose, the distance between the lateral wall of awl piece and the mouth of pipe border of spray tube reduced, and buggy blowout volume reduced.

2. The pulverized coal injection nozzle structure of claim 1, wherein the pipe wall of the injection pipe is provided with a lifting sliding cavity, the cavity wall of the lifting sliding cavity is provided with a mounting hole and a cover plate for covering the mounting hole, the cover plate is provided with an operation hole, the lifting mechanism comprises a rack, a gear and a fixing member, the rack is vertically and slidably connected with the cavity wall of the lifting sliding cavity, the gear is rotatably connected with the hole wall of the operation hole, the gear is matched with the rack, the rack is fixed with the cavity wall of the lifting sliding cavity through the fixing member, and the lower end of the rack is connected with the support rod.

3. The pulverized coal injection nozzle structure as claimed in claim 2, wherein the wall of the lifting sliding chamber is provided with a plurality of fixing grooves distributed in a vertical direction, the rack is provided with the fixing member, and the fixing member adopts a fixing block for being matched with the fixing grooves.

4. The pulverized coal injection nozzle structure as claimed in claim 2, wherein the wall of the mounting hole is provided with a buckle, the cover plate is provided with a buckle hole for cooperating with the buckle, the wall of the operation hole is provided with a shaft hole, and the gear is provided with a gear shaft for cooperating with the shaft hole.

5. The pulverized coal injection head structure as claimed in any one of claims 2 to 4, the taper block includes that the awl emits, adjusting screw, first awl curb plate, second toper curb plate, adjusting link, the regulating block, adjusting screw's upper end and awl emit and rotate to be connected, first awl curb plate is equipped with two at least, the upper end and the awl of all first awl curb plates emit and are connected, be equipped with the second toper curb plate between two adjacent first awl curb plates, the upper end and the awl of second toper curb plate are emitted and are connected, first awl curb plate and second toper curb plate circumference sliding connection, all first awl curb plates and all second toper curb plates surround adjusting screw and form the toper structure, first awl curb plate passes through the bracing piece with rack connection, the bracing piece adopts the telescopic link, adjusting link's upper end is articulated with first awl curb plate, the lower extreme of adjusting lever is articulated with the regulating block, the regulating block is equipped with be used for with adjusting screw complex regulation screw.

6. The pulverized coal injection nozzle structure as claimed in claim 5, wherein the lower end of the first tapered side plate is bent to a side close to the adjusting screw to form a slideway, and the lower end of the second tapered side plate is in circumferential sliding fit with the slideway.

7. The pulverized coal injection nozzle structure of claim 5, wherein the lower end of the cone cap is provided with a rotary hole, the hole wall of the rotary hole is provided with an annular groove, the upper end of the adjusting screw is provided with an annular rail for rotationally matching with the annular groove, the first cone side plate is provided with a first hinge seat, the first hinge seat is provided with a first hinge hole, the adjusting block is provided with a second hinge seat, the second hinge seat is provided with a second hinge hole, the upper end of the adjusting connecting rod is provided with a first hinge shaft for rotationally matching with the first hinge hole, and the lower end of the adjusting connecting rod is provided with a second hinge shaft for rotationally matching with the second hinge hole.

8. The pulverized coal injection nozzle structure as claimed in claim 5, wherein the telescopic rod comprises an outer barrel and an inner rod, the inner rod is in sliding fit with an inner cavity of the outer barrel, the outer barrel is connected with the rack, and the inner rod is connected with the first conical side plate.

Technical Field

The invention relates to the technical field of coal injection equipment, in particular to a pulverized coal nozzle structure.

Background

In order to make the pulverized coal fully burn, currently, most pulverized coal nozzles are adopted to convey the pulverized coal, as shown in fig. 1, the pulverized coal nozzles comprise spray pipes 1, under the assistance of air, the pulverized coal can be sprayed out from the spray pipes 1, the contact sufficiency of the pulverized coal sprayed out from the spray pipes 1 and oxygen in the air is improved, and therefore the combustion sufficiency of the pulverized coal is improved.

However, although the pulverized coal ejected from the nozzle is boosted by air, the aggregation degree of the pulverized coal is still large, that is, the density of the pulverized coal is large, so that the contact sufficiency of the pulverized coal and oxygen in the air still needs to be improved, and the combustion sufficiency of the pulverized coal also needs to be improved.

Therefore, the technical problem to be solved by the technical staff in the field is how to improve the contact sufficiency of the coal dust and the oxygen in the air to enable the coal dust to be more fully combusted, so as to improve the utilization rate of the coal dust and save the consumption of the coal dust.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides the pulverized coal nozzle structure, which can improve the contact sufficiency of the pulverized coal and oxygen in the air so as to ensure that the pulverized coal is more fully combusted, improve the utilization rate of the pulverized coal and save the consumption of the pulverized coal.

In order to realize the purpose, the invention provides the following technical scheme:

the utility model provides a buggy shower nozzle structure, includes spray tube, awl piece, bracing piece, elevating system, is equipped with most advanced upward awl piece in the spray tube, and the lower extreme of awl piece is equipped with the bracing piece, and the bracing piece passes through the pipe wall connection of elevating system and spray tube, and when the bracing piece rose, the distance between the lateral wall of awl piece and the mouth of pipe border of spray tube reduced, and buggy blowout volume reduces.

Furthermore, the pipe wall of spray tube is equipped with the smooth chamber of going up and down, and the chamber wall in the smooth chamber of going up and down is equipped with the mounting hole and is used for hiding the apron of mounting hole, and the apron is equipped with the handle hole, elevating system includes rack, gear, mounting, and the rack is connected with the vertical sliding connection in the chamber wall in the smooth chamber of going up and down, and the gear rotates with the pore wall of handle hole to be connected, and wheel and rack cooperation, rack pass through the mounting and fix with the chamber wall in the smooth chamber of going up and down, the lower extreme of rack with the bracing piece is connected.

Furthermore, the cavity wall of the lifting sliding cavity is provided with a plurality of fixing grooves distributed along the vertical direction, the rack is provided with the fixing piece, and the fixing piece is used for fixing blocks matched with the fixing grooves.

Further, the pore wall of mounting hole is equipped with the buckle, the apron is equipped with and is used for detaining the hole with buckle complex, the pore wall of handle hole is equipped with the shaft hole, the gear be equipped with be used for with shaft hole normal running fit's gear shaft.

Further, the awl piece is including the awl and emits, adjusting screw, first awl curb plate, second toper curb plate, adjusting link, the regulating block, adjusting screw's upper end and awl emit and rotate to be connected, first awl curb plate is equipped with two at least, the upper end and the awl of all first awl curb plates are emitted and are connected, be equipped with the second toper curb plate between two adjacent first awl curb plates, the upper end and the awl of second toper curb plate are emitted and are connected, first awl curb plate and second toper curb plate circumference sliding connection, all first awl curb plates and all second toper curb plates surround adjusting screw and form the toper structure, first awl curb plate passes through the bracing piece with rack connection, the bracing piece adopts the telescopic link, adjusting link's upper end and first awl curb plate are articulated, the lower extreme of adjusting lever is articulated with the regulating block, the regulating block is equipped with and is used for adjusting screw complex regulation screw.

Furthermore, the lower end of the first conical side plate is bent towards one side close to the adjusting screw rod to form a slide way, and the lower end of the second conical side plate is in circumferential sliding fit with the slide way.

Further, the lower extreme that the awl emits is equipped with changes the hole, and the pore wall that changes the hole is equipped with the ring channel, adjusting screw's upper end is equipped with and is used for rotating the cooperation ring rail with the ring channel, first awl curb plate is equipped with first articulated seat, and first articulated seat is equipped with first hinge hole, the regulating block is equipped with the articulated seat of second, and the articulated seat of second is equipped with the second hinge hole, the upper end of adjusting connecting rod be equipped with be used for with first hinge hole normal running fit's first articulated shaft, the lower extreme of adjusting connecting rod be equipped with be used for with second hinge hole normal running fit's second articulated shaft.

Furthermore, the telescopic rod comprises an outer barrel and an inner rod, the inner rod is in sliding fit with an inner cavity of the outer barrel, the outer barrel is connected with the rack, and the inner rod is connected with the first conical side plate.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the invention, the conical block is arranged in the spray pipe, the annular powder spraying opening is formed between the side wall of the conical block and the edge of the pipe opening of the spray pipe, so that pulverized coal flowing through the conical block is dispersed by the conical block, the dispersed pulverized coal is annularly sprayed out after passing through the powder spraying opening, the annularly sprayed pulverized coal can be more uniformly dispersed, the contact sufficiency of the pulverized coal and oxygen in the air is improved, the pulverized coal can be more fully combusted, the pulverized coal utilization rate is improved, the pulverized coal consumption is reduced, and the effects of saving coal resources and cost are further achieved.

And moreover, the height of the supporting rod and the height of the conical block can be adjusted by arranging the lifting mechanism. When the lifting mechanism drives the supporting rod to descend, the distance between the side wall of the conical block and the edge of the orifice of the spray pipe is increased, namely the width of the powder spraying orifice is increased, the spraying amount of the pulverized coal is increased, namely the density of the pulverized coal is increased, the contact sufficiency of the pulverized coal and oxygen in the air is reduced, the combustion sufficiency of the pulverized coal is reduced, the utilization rate of the pulverized coal is reduced, and the pulverized coal consumption is increased; when the lifting mechanism drives the supporting rod to ascend, the distance between the side wall of the conical block and the edge of the pipe opening of the spray pipe is shortened, namely the width of the powder spraying opening is reduced, the spraying amount of the pulverized coal is reduced, namely the density of the pulverized coal is reduced, the contact sufficiency of the pulverized coal and oxygen in the air is improved, the combustion sufficiency of the pulverized coal is improved, the utilization rate of the pulverized coal is improved, and the pulverized coal consumption is saved. Therefore, the lifting mechanism can adjust the spraying amount of the pulverized coal, so that the pulverized coal spraying device is more flexible to use, meets the requirements of users on the spraying amounts of the pulverized coal with different sizes, and enlarges the application range.

2. The lifting mechanism provided by the invention is simple in structure, the height of the rack in the lifting mechanism can be adjusted by only twisting the gear in the lifting mechanism, so that the height of the supporting rod positioned at the lower end of the rack can be adjusted, the height of the conical block in the spray pipe can be adjusted, the operation is convenient, and the operation efficiency is improved.

Moreover, because the gear is twisted by hands, teeth on the gear can be meshed with the rack, the friction force of the worker twisting the gear can be increased, the probability of slipping is prevented, and the reliability and accuracy of operation are improved.

3. According to the invention, the fixed block serving as the fixing part is arranged on the rack, the fixed groove is arranged on the cavity wall of the lifting sliding cavity, and the fixed block can be fed into the fixed groove to fix the height of the rack, so that the heights of the supporting rod and the conical block are fixed, the height of the conical block is fixed at any time, the adjustment of the lifting mechanism is convenient, and the operation efficiency is further improved.

4. According to the invention, the buckle is arranged on the wall of the mounting hole, the buckle hole capable of being matched with the buckle is arranged on the cover plate, the cover plate can be mounted on the pipe wall of the spray pipe only by extruding the buckle into the buckle hole, and the cover plate can be dismounted only by pulling the buckle out of the buckle hole, so that the cover plate is simple, convenient and quick to dismount, and the dismounting efficiency of the cover plate is improved, therefore, the dismounting efficiency of the cover plate is improved, and the dismounting efficiency of the spray pipe is also improved.

5. The taper of the taper block in the invention is adjustable, and when the height position of the taper block is adjusted after the taper of the taper block is reduced, the adjusting range of the distance between the side wall of the taper block and the edge of the pipe orifice of the spray pipe is enlarged, thereby improving the adjusting flexibility.

In addition, in the invention, the taper of the conical block can be adjusted only by screwing the adjusting screw, the operation is simple, convenient and quick, and the adjustment efficiency is improved.

6. According to the invention, the lower end of the first conical side plate is bent towards one side close to the adjusting screw rod to form the slide way, and the lower end of the second conical side plate is matched with the slide way, so that the slide way can be prevented from bearing coal powder, the coal powder can smoothly flow through the surfaces of the first conical side plate and the second conical side plate, the coal powder is prevented from being accumulated in the slide way and cannot be used, and the utilization rate of the coal powder is further improved.

7. According to the invention, the annular groove is arranged in the rotary hole at the lower end of the cone cap, the annular rail is arranged on the adjusting screw rod, and the cone cap and the adjusting screw rod can be installed together only by extruding the annular rail on the adjusting screw rod into the annular groove in the rotary hole at the lower end of the cone cap; only need extract annular rail on the adjusting screw from the ring channel, can cap the split with adjusting screw with the awl for the dismouting of awl cap and adjusting screw is simple and convenient swift, is favorable to improving the dismouting efficiency of awl cap and adjusting screw.

The adjusting connecting rod, the first conical side plate and the adjusting block can be assembled together by arranging the first hinge seat on the first conical side plate, arranging the second hinge seat on the adjusting block, arranging the first hinge shaft which is used for being matched with the first hinge hole on the first hinge seat at the upper end of the adjusting connecting rod, and arranging the second hinge shaft which is used for being matched with the second hinge hole on the second hinge seat at the lower end of the adjusting connecting rod; the adjusting connecting rod can be detached from the first cone side plate and the adjusting block only by pulling out the first hinge shaft at the upper end of the adjusting connecting rod from the first hinge hole on the first hinge seat and pulling out the second hinge shaft at the lower end of the adjusting connecting rod from the second hinge hole on the second hinge seat. The adjusting connecting rod, the first conical side plate and the adjusting block can be conveniently and quickly disassembled, and the disassembling efficiency of the adjusting connecting rod, the first conical side plate and the adjusting block can be improved. Thus being beneficial to further improving the disassembly and assembly efficiency of the invention.

Drawings

FIG. 1 is a schematic structural diagram of the prior art;

FIG. 2 is a first schematic structural diagram of a pulverized coal injection nozzle structure according to embodiment 1;

FIG. 3 is a partial enlarged view of FIG. 2A;

FIG. 4 is a second schematic structural view of a pulverized coal injection nozzle structure according to embodiment 1;

FIG. 5 is a partial enlarged view of FIG. 4B;

FIG. 6 is a first schematic structural diagram of a cone block according to embodiment 2;

FIG. 7 is a second schematic structural view of a cone block according to embodiment 2;

FIG. 8 is an enlarged view of a portion of FIG. 7C;

FIG. 9 is an enlarged view of a portion of FIG. 7D;

FIG. 10 is a third schematic structural view of a cone block according to embodiment 2;

fig. 11 is a partial enlarged view of fig. 10E.

In the figure:

1-a spray pipe, wherein the spray pipe is arranged in the spray pipe,

11-lifting sliding cavity, 111-mounting hole, 1111-fastener, 112-cover plate, 1121-operating hole, 1122-fastener hole, 113-fixing groove,

2-the conical block is arranged on the upper surface of the frame,

21-cone cap, 211-rotary hole, 2111-ring groove,

22-adjusting screw, 221-annular rail,

23-a first conical side plate, 231-a slideway, 232-a first hinge seat, 2321-a first hinge hole,

24-a second cone-side plate,

25-adjusting link, 251-first hinge axis, 252-second hinge axis,

26-an adjusting block, 261-an adjusting screw hole, 262-a second hinging seat, 2621-a second hinging hole,

3-a support rod, 31-an outer cylinder, 32-an inner rod,

4-a lifting mechanism is arranged on the frame,

41-a rack of teeth, the rack of teeth,

42-gear, 421-gear shaft,

43-fixing element.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

As shown in fig. 2-5, a pulverized coal nozzle structure comprises a nozzle 1, a conical block 2, a support rod 3 and a lifting mechanism 4.

As shown in fig. 2, a conical block 2 with an upward tip is arranged in the spray pipe 1, two support rods 3 are welded at the lower end of the conical block 2, and the support rods 3 are connected with the pipe wall of the spray pipe 1 through a lifting mechanism 4.

As shown in fig. 4, the setting of awl piece 2, can let form annular mouth of dusting between the lateral wall of awl piece 2 and the mouth of pipe border of spray tube 1, thereby let the buggy that flows through awl piece 2 dispersed by awl piece 2, buggy after the dispersion is annular blowout after through the mouth of dusting, the buggy that is annular blowout can disperse more evenly, the sufficiency of the contact of oxygen in buggy and the air has been improved, let the buggy can more fully burn, the fine coal utilization ratio has been improved, the pulverized coal consumption has been saved.

As shown in fig. 4, when the lifting mechanism 4 drives the supporting rod 3 to descend, the distance between the side wall of the conical block 2 and the edge of the nozzle 1 is increased, namely, the width of the powder spraying opening is increased, the spraying amount of the pulverized coal is increased, namely, the density of the pulverized coal is increased, the contact sufficiency of the pulverized coal and oxygen in the air is reduced, the combustion sufficiency of the pulverized coal is reduced, the utilization rate of the pulverized coal is reduced, and the pulverized coal consumption is aggravated.

As shown in fig. 4, when the lifting mechanism 4 drives the supporting rod 3 to ascend, the distance between the side wall of the conical block 2 and the edge of the nozzle 1 is shortened, that is, the width of the powder spraying opening is reduced, the pulverized coal spraying amount is reduced, that is, the pulverized coal density is reduced, the contact sufficiency between the pulverized coal and oxygen in the air is improved, the combustion sufficiency of the pulverized coal is improved, the utilization rate of the pulverized coal is improved, the pulverized coal consumption is reduced, and then the effect of saving coal resources and cost is achieved.

Next, a specific structure of the elevating mechanism 4 for achieving the elevation of the support rod 3 will be described.

As shown in fig. 3 and 5, the pipe wall of the nozzle 1 is provided with a lifting slide cavity 11, the cavity wall of the lifting slide cavity 11 is provided with a mounting hole 111 and a cover plate 112 for covering the mounting hole 111, and the cover plate 112 is provided with an operation hole 1121. The wall of the mounting hole 111 is welded with a buckle 1111, and the cover plate 112 is provided with a buckle hole 1122 matched with the buckle 1111.

As shown in fig. 5, when the cover plate 112 is installed, a worker needs to press the cover plate 112 with force so as to press the buckles 1111 on the hole wall of the installation hole 111 into the buckle holes 1122 of the cover plate 112, so as to fix the cover plate 112 and the pipe wall of the nozzle 1 together. When the cover plate 112 is detached, a worker needs to break the cover plate 112 with force, so that the fasteners 1111 on the hole wall of the mounting hole 111 are pulled out from the fastener holes 1122 of the cover plate 112, and the cover plate 112 can be detached from the pipe wall of the nozzle 1.

Through the above-mentioned assembling and disassembling process of the cover plate 112: set up buckle 1111 through the pore wall at mounting hole 111, set up on apron 112 can with buckle 1111 complex detain hole 1122, only need let buckle 1111 squeeze in detain hole 1122, can install apron 112 on the pipe wall of spray tube 1, only need extract buckle 1111 from detaining hole 1122, can tear down apron 112, make the dismouting of apron 112 simple and fast, be favorable to improving the dismouting efficiency of apron 112, thereby be favorable to improving the efficiency of changing maintenance apron 112.

As shown in fig. 3, the lifting mechanism 4 includes a rack 41, a gear 42, and a fixing member 43. The rack 41 is arranged in the lifting slide cavity 11, the rack 41 can slide up and down along the vertical direction in the lifting slide cavity 11 along the cavity wall of the lifting slide cavity 11, and the lower end of the rack 41 is welded and fixed with the support rod 3. The gear 42 is disposed in the operation hole 1121 of the cover plate 112, the gear 42 is welded with a gear shaft 421, the gear shaft 421 is rotatably engaged with a shaft hole (not shown) disposed on the hole wall of the operation hole 1121, and the gear 42 is engaged with the rack 41. The chamber wall of smooth chamber 11 that goes up and down is equipped with a plurality of fixed slots 113 that distribute along vertical direction, and mounting 43 adopts the fixed block, and rack 41 and fixed block welded fastening, fixed block can cooperate with fixed slot 113.

As shown in fig. 2 and 3, when the lifting mechanism 4 is used to drive the support rod 3 to move down, the following operations are required: the worker rubs the gear 42 with the fingers, the gear 42 rotates, the rack 41 engaged with the gear 42 moves downwards in the lifting slide cavity 11, the support rod 3 welded and fixed with the lower end of the rack 41 moves downwards, and the conical block 2 welded and fixed with the support rod 3 moves downwards. In the process that the rack 41 moves downwards in the lifting sliding cavity 11, the fixed block on the rack 41 slides out from the fixed groove 113 at the upper position, and the fixed block on the rack 41 pushes the fixed groove 113 at the lower position again, once the twisting of the gear 42 is stopped, the rack 41 cannot move in the lifting sliding cavity 11 because the fixed block enters the new fixed groove 113, so that the position of the rack 41 is fixed, the height of the support rod 3 is also fixed, and the height of the conical block 2 is also fixed, thereby completing the downward movement of the support rod 3.

As shown in fig. 2 and 3, when the support rod 3 is driven to move up by the lifting mechanism 4, the following operations are required: the worker twists the gear 42 with the fingers, the gear 42 rotates, the rack 41 engaged with the gear 42 moves upwards in the lifting slide cavity 11, the support rod 3 welded and fixed with the lower end of the rack 41 moves upwards, and the cone block 2 welded and fixed with the support rod 3 moves upwards. During the process that the rack 41 moves upwards in the lifting slide chamber 11, the fixed block on the rack 41 slides out from the fixed groove 113 at the lower position, and the fixed block on the rack 41 pushes the fixed groove 113 at the upper position again, once the twisting of the gear 42 is stopped, the rack 41 cannot move in the lifting slide chamber 11 because the fixed block enters the new fixed groove 113, so that the position of the rack 41 is fixed, the height of the support rod 3 is also fixed, and the height of the cone block 2 is also fixed, thereby completing the upwards movement of the support rod 3.

The process that the lifting mechanism 4 drives the supporting rod 3 to move up and down can be known as follows: the lifting mechanism 4 provided by the embodiment 1 is simple in structure, and the height of the rack 41 in the lifting mechanism 4 can be adjusted only by twisting the gear 42 in the lifting mechanism 4, so that the height of the support rod 3 positioned at the lower end of the rack 41 can be adjusted, the height of the conical block 2 in the spray pipe 1 can be adjusted, and the operation is convenient and beneficial to improving the operation efficiency.

Moreover, because the gear 42 is twisted by hand, teeth on the gear 42 can not only be meshed with the rack 41, but also increase the friction force of the worker twisting the gear 42, thereby preventing the probability of slipping and improving the reliability and accuracy of operation.

Furthermore, through set up the fixed block as mounting 43 on rack 41, set up fixed slot 113 in the chamber wall of smooth chamber 11 that goes up and down, can send the fixed block into fixed slot 113, come the height of fixed rack 41 to come the height of fixed support rod 3 and conical block 2, realized fixing at any time the conical block 2 height, make things convenient for elevating system 4's regulation, be favorable to improving operating efficiency.

Example 2

As shown in fig. 6-11, the present embodiment 2 is further improved on the basis of embodiment 1: in the structure of the pulverized coal injection nozzle in this embodiment 2, the cone block 2 includes a cone cap 21, an adjusting screw 22, a first cone side plate 23, a second cone side plate 24, an adjusting link 25, and an adjusting block 26.

As shown in fig. 11, the upper end of the adjusting screw 22 is rotatably connected to the cone cap 21. Specifically, the method comprises the following steps: the lower end of the cone cap 21 is provided with a rotating hole 211, the hole wall of the rotating hole 211 is provided with an annular groove 2111, the upper end of the adjusting screw 22 is welded with an annular rail 221, and the annular rail 221 can be in running fit with the annular groove 2111.

As shown in fig. 11, when the adjusting screw 22 and the cone cap 21 need to be installed together, only the annular rail 221 on the adjusting screw 22 needs to be squeezed into the annular groove 2111 in the rotating hole 211 at the lower end of the cone cap 21. When the adjusting screw 22 and the cone cap 21 need to be detached, the annular rail 221 on the adjusting screw 22 is only required to be pulled out of the annular groove 2111.

The assembling and disassembling process of the adjusting screw 22 and the cone cap 21 can be known as follows: the cone cap 21 and the adjusting screw 22 can be installed together only by extruding the annular rail 221 on the adjusting screw 22 into the annular groove 2111 in the rotary hole 211 at the lower end of the cone cap 21 through arranging the annular groove 2111 in the rotary hole 211 at the lower end of the cone cap 21 and arranging the annular rail 221 on the adjusting screw 22; the adjusting screw 22 and the cone cap 21 can be detached only by pulling out the annular rail 221 on the adjusting screw 22 from the annular groove 2111, so that the cone cap 21 and the adjusting screw 22 can be detached simply, conveniently and quickly, and the detaching efficiency of the cone cap 21 and the adjusting screw 22 can be improved.

As shown in fig. 7, the first tapered side plate 23 is provided with at least two, and in the present embodiment 2, the first tapered side plate 23 is provided with three, and the three first tapered side plates 23 are made of thin steel plates having certain elasticity and capable of allowing bending deformation. The upper ends of the three first cone side plates 23 are all welded and fixed with the lower end of the cone cap 21, and the three first cone side plates 23 are evenly distributed around the adjusting screw 22.

As shown in fig. 6, the first tapered side plate 23 is connected to the rack 41 through the support rod 3, and the support rod 3 is an expansion rod. Specifically, the method comprises the following steps: the telescopic rod comprises an outer cylinder 31 and an inner rod 32, the inner rod 32 is in sliding fit with an inner cavity of the outer cylinder 31, the outer cylinder 31 is welded and fixed with the rack 41, and the inner rod 32 is welded and fixed with the first conical side plate 23. The supporting rod 3 provided by the invention is simple in structure, convenient to process and beneficial to improving the processing efficiency.

As shown in fig. 7, the second tapered side plate 24 is also made of a thin steel plate. The second tapered side plates 24 are arranged between two adjacent first tapered side plates 23, because the number of the first tapered side plates 23 is three, and one second tapered side plate 24 is arranged between every two first tapered side plates 23, the number of the second tapered side plates 24 is also three, and the upper ends of the three second tapered side plates 24 are welded and fixed with the lower end of the cone cap 21.

As shown in fig. 7, three first tapered side plates 23 and three second tapered side plates 24 surround the adjusting screw 22 to form a tapered structure.

As shown in FIG. 10, the first tapered side plate 23 is connected with the second tapered side plate 24 in a sliding manner in the circumferential direction. Specifically, the method comprises the following steps: the lower end of the first tapered side plate 23 is bent to form a slide way 231 at a side close to the adjusting screw 22, and the lower end of the second tapered side plate 24 is in circumferential sliding fit with the slide way 231.

The lower end of the first tapered side plate 23 is bent towards one side close to the adjusting screw 22 to form a slide 231, the lower end of the second tapered side plate 24 is matched with the slide 231, the slide 231 can be prevented from bearing coal dust, so that the coal dust can smoothly flow through the surfaces of the first tapered side plate 23 and the second tapered side plate 24, the coal dust is prevented from being accumulated in the slide 231 and cannot be used, and the utilization rate of the coal dust is further improved.

As shown in fig. 10, when the three first tapered side plates 23 are pressed in a direction approaching the adjusting screw 22, the first tapered side plates 23 can press the second tapered side plates 24, the second tapered side plates 24 are also pressed in a direction approaching the adjusting screw 22, so that the lower ends of the second tapered side plates 24 and the slide ways 231 slide relatively, the taper of the tapered structure formed by the three first tapered side plates 23 and the three second tapered side plates 24 in an enclosing manner (the taper refers to the ratio of the bottom diameter of the cone to the height of the cone) is reduced, and after the taper is reduced, when the height position of the cone block 2 is adjusted, the adjustment range of the distance between the side wall of the cone block 2 and the nozzle edge of the nozzle 1 is larger than that of embodiment 1, thereby improving the adjustment flexibility.

As shown in fig. 9, the adjusting block 26 is provided with an adjusting screw hole 261, and the adjusting screw hole 261 is engaged with the adjusting screw 22.

As shown in fig. 8 and 9, the upper end of the adjusting link 25 is hinged to the first tapered side plate 23, and the lower end of the adjusting lever is hinged to the adjusting block 26. Specifically, the method comprises the following steps: first articulated seat 232 is welded to first awl curb plate 23 in the one side that is close to adjusting screw 22, first articulated seat 232 is equipped with first articulated hole 2321, adjusting block 26 welds the articulated seat 262 of second, the articulated seat 262 of second is equipped with second articulated hole 2621, the upper end welding of adjusting connecting rod 25 has first articulated shaft 251, first articulated shaft 251 and first articulated hole 2321 normal running fit, the lower extreme welding of adjusting connecting rod 25 has second articulated shaft 252, second articulated shaft 252 and second articulated hole 2621 normal running fit.

As shown in fig. 8 and 9, when the adjusting link 25, the first tapered side plate 23 and the adjusting block 26 need to be mounted together, the first hinge shaft 251 at the upper end of the adjusting link 25 is only required to be pushed into the first hinge hole 2321 on the first hinge seat 232 on the first tapered side plate 23, and the second hinge shaft 252 at the lower end of the adjusting link 25 is only required to be pushed into the second hinge hole 2621 on the second hinge seat 262 on the adjusting block 26. When the adjusting link 25 needs to be detached from the first tapered side plate 23 and the adjusting block 26, only the first hinge shaft 251 at the upper end of the adjusting link 25 needs to be pulled out from the first hinge hole 2321 on the first hinge seat 232, and the second hinge shaft 252 at the lower end of the adjusting link 25 needs to be pulled out from the second hinge hole 2621 on the second hinge seat 262.

The assembling and disassembling processes of the adjusting connecting rod 25, the first conical side plate 23 and the adjusting block 26 are as follows: the first hinge seat 232 is arranged on the first conical side plate 23, the second hinge seat 262 is arranged on the adjusting block 26, the first hinge shaft 251 matched with the first hinge hole 2321 on the first hinge seat 232 is arranged at the upper end of the adjusting connecting rod 25, the second hinge shaft 252 matched with the second hinge hole 2621 on the second hinge seat 262 is arranged at the lower end of the adjusting connecting rod 25, and the adjusting connecting rod 25, the first conical side plate 23 and the adjusting block 26 can be assembled together only by extruding the first hinge shaft 251 at the upper end of the adjusting connecting rod 25 into the first hinge hole 2321 on the first hinge seat 232 on the first conical side plate 23 and extruding the second hinge shaft 252 at the lower end of the adjusting connecting rod 25 into the second hinge hole 2621 on the second hinge seat 262 on the adjusting block 26; the adjusting connecting rod 25 can be detached from the first tapered side plate 23 and the adjusting block 26 only by pulling out the first hinge shaft 251 at the upper end of the adjusting connecting rod 25 from the first hinge hole 2321 on the first hinge seat 232 and pulling out the second hinge shaft 252 at the lower end of the adjusting connecting rod 25 from the second hinge hole 2621 on the second hinge seat 262. The adjusting connecting rod 25, the first conical side plate 23 and the adjusting block 26 can be conveniently and quickly disassembled, and the disassembling efficiency of the adjusting connecting rod 25, the first conical side plate 23 and the adjusting block 26 can be improved.

As shown in fig. 10, when the taper of the taper block 2 needs to be reduced, the following operations need to be performed: the worker clockwise screws the adjusting screw 22, because the upper end of the adjusting link 25 is hinged to the first hinged seat 232 on the first tapered side plate 23, and the lower end of the adjusting link 25 is hinged to the second hinged seat 262 on the adjusting block 26, the adjusting block 26 does not rotate around the circumferential direction of the adjusting screw 22, and only moves up and down along the axial direction of the adjusting screw 22, along with the clockwise rotation of the adjusting screw 22, the adjusting block 26 provided with the adjusting screw hole 261 moves down along the axial direction of the adjusting screw 22, along with the downward movement of the adjusting block 26, the adjusting block 26 pulls the lower end of the adjusting link 25 to move down, so that the first tapered side plate 23 is gathered close to the adjusting screw 22, and the first tapered side plate 23 can extrude the second tapered side plate 24, the second tapered side plate 24 is also extruded close to the adjusting screw 22, so that the lower end of the second tapered side plate 24 slides relative to the slide rail 231, and the taper of the tapered structure formed by the three first tapered side plates 23 and the three second tapered side plates 24 is reduced And the taper of the taper block 2 is reduced. After the taper is reduced, when the height position of the taper block 2 is adjusted, the adjusting range of the distance between the side wall of the taper block 2 and the edge of the nozzle 1 is larger than that of the embodiment 1, so that the adjusting flexibility is improved.

The process of adjusting the taper of the taper block 2 can be known as follows: the tapering of the taper block 2 in this embodiment 2 is adjustable, and after the tapering of taper block 2 reduced, when the high position of readjustment taper block 2, the adjustment range of the distance between the lateral wall of taper block 2 and the mouth of pipe border of spray tube 1 increased to the regulation flexibility has been improved.

In addition, in this embodiment 2, the taper of the taper block 2 can be adjusted only by screwing the adjusting screw 22, so that the operation is simple, convenient and fast, and the adjustment efficiency is improved.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.