CN219377432U - Removable shutoff structure of local embedding - Google Patents

Abstract

The utility model discloses a local embedded replaceable plugging structure, which comprises a mounting frame, a movable ring, an air duct and a plugging block, wherein the mounting frame and the movable ring are used for supporting and mounting, and the air duct is arranged in the movable ring; the utility model relates to the technical field of emergency articles, which has the following beneficial effects: according to the scheme, the service life of the movable ring of the coal mill can be effectively prolonged by using the wear-resistant material of the high-chromium alloy, the problem that primary air quantity control of the coal pulverizing system cannot be automatically adjusted in real time along with the change of load and coal quantity can be solved by assembling the matching component and the blocking mounting component, the control flexibility of the coal pulverizing system is improved, the primary air quantity and the air speed are organized and optimized by adjusting the flow area of the movable ring, the change of coal quality and the change of load can be adapted, and the adjustment range of primary air is increased under the condition that the primary air outlet wind speed of the movable ring is not influenced. Meanwhile, the maintenance is convenient, the adjustment is simple, the equipment operation efficiency is improved, the equipment energy consumption is reduced, and the maintenance cost is reduced.

Description

Removable shutoff structure of local embedding

Technical Field

The utility model relates to the technical field of emergency articles, in particular to a local embedded replaceable plugging structure.

Background

The medium speed coal mill is a coal mill with the working rotation speed of 50-300 r/min, belongs to the special equipment for preparing auxiliary materials for blast furnace ironmaking, and can provide proper auxiliary materials-coal powder for a blast furnace ironmaking system. The medium-speed coal mill is the most important large-scale equipment in the coal-to-oil pulverizing system, the operation safety and economy of the medium-speed coal mill are extremely important for the normal operation of coal-to-oil, the medium-speed vertical coal mill at the present stage is one of the main equipment in most coal-fired power plants, the coal mill provides pulverized coal fuel for a boiler, and a series of functions of grinding, drying, screening, preliminary separation, pulverized coal conveying and the like are carried out. The main working process is as follows: raw coal falls into the center of the rotary millstone from the coal drop pipe, and enters the milling track of the milling roller and millstone under the action of centrifugal force to be milled into coal dust by rolling. The pulverized coal is dried by primary hot air sprayed from the driven ring, and is conveyed into the separator to be separated and screened by ascending clockwise spiral, the pulverized coal with smaller fineness is conveyed into the hearth, and the pulverized coal with thicker fineness is returned to the grinding area. Stone coal which is difficult to grind falls into the primary air chamber through the throat of the movable ring and is brought into the slag discharging box by the scraping plate, and finally is discharged through the slag discharging door, but the primary air system has the following problems at present: the outlet of the movable ring air passage of the coal mill is greatly eroded and worn by primary air and coal dust, and after the wear-resistant material of the high-chromium alloy is adopted, the wear problem is relieved, but the high-chromium alloy material cannot be further thermally processed and cannot be repaired and modified on the basis of the existing material. The domestic coal pulverizing system has complex and variable working conditions, such as coal variety change, load change and the like, so that the demand of the coal pulverizing system on primary air quantity can be greatly changed, but the area of the air passage outlet of the movable ring of the coal pulverizer is invariable, if the primary air quantity is only regulated in the running process, the primary air speed change of the movable ring outlet is caused, thereby influencing the primary air lifting capacity of pulverized coal, the circulation rate of pulverized coal in the mill, the screening capacity of pebble coal, and the problems of more pebble coal, high power consumption or insufficient output and the like.

Disclosure of Invention

In order to achieve the above purpose, the utility model is realized by the following technical scheme: the utility model provides a removable shutoff structure of local embedding, includes mounting bracket, rotating ring, wind channel and sprue, mounting bracket and rotating ring are used for carrying out support installation, the wind channel is seted up in the rotating ring, the sprue is installed on the mounting bracket, be equipped with the equipment cooperation subassembly on the sprue, be equipped with sprue installation component and mounting bracket fixed subassembly on the mounting bracket;

wherein, the equipment cooperation subassembly includes: a buckle, a matching groove and a butt strap;

the buckle is installed in the buckle both sides, the cooperation groove is seted up in the sprue top, the strap is installed on another sprue, the strap is installed in the cooperation inslot.

Preferably, the side shape of the blocking piece is consistent with the shape of the air duct side.

Preferably, the moving ring is made of wear-resistant material of high-chromium alloy.

Preferably, the block mounting assembly includes: the clamping groove, the clamping block, the telescopic rod and the spring;

the clamping groove is formed in the mounting frame, the clamping block is mounted in the clamping groove, the telescopic rod is connected to the rear of the clamping block and the side wall of the clamping groove, and the spring is sleeved on the telescopic rod.

Preferably, the block mounting assembly and the block are divided into a plurality of parts according to the requirement.

Preferably, the mounting bracket fixing assembly includes: threaded holes and bolts;

the threaded holes are formed in the mounting frame and the movable ring, and the bolts are arranged in the threaded holes.

Advantageous effects

This removable shutoff structure of local embedding possesses following beneficial effect:

according to the scheme, the service life of the movable ring of the coal mill can be effectively prolonged by using the wear-resistant material of the high-chromium alloy, the problem that primary air quantity control of the coal pulverizing system cannot be automatically adjusted in real time along with the change of load and coal quantity can be solved by assembling the matching component and the blocking mounting component, the control flexibility of the coal pulverizing system is improved, the primary air quantity and the air speed are organized and optimized by adjusting the flow area of the movable ring, the change of coal quality and the change of load can be adapted, and the adjustment range of primary air is increased under the condition that the primary air outlet wind speed of the movable ring is not influenced. Meanwhile, the maintenance is convenient, the adjustment is simple, the equipment operation efficiency is improved, the equipment energy consumption is reduced, and the maintenance cost is reduced.

Drawings

Fig. 1 is a schematic view of the fitting of a mounting frame and a movable ring of a partially embedded replaceable plugging structure according to the present utility model.

Fig. 2 is a schematic view of a mounting frame and a block fitting of a partially embedded replaceable block structure according to the present utility model.

Fig. 3 is a schematic top view of an assembled fitting assembly with a partially embedded replaceable plugging structure according to the present utility model.

Fig. 4 is a schematic side view of an assembled fitting component with a partially embedded replaceable plugging structure according to the present utility model.

Fig. 5 is a schematic view of a block mounting assembly with a partially embedded replaceable block structure according to the present utility model.

Fig. 6 is an enlarged partial schematic view of a block mounting assembly with a partially embedded replaceable block structure according to the present utility model.

In the figure: 1. a mounting frame; 2. a moving ring; 3. an air duct; 4. blocking; 5. a buckle; 6. a mating groove; 7. a butt strap; 8. a buckle groove; 9. a clamping block; 10. a telescopic rod; 11. a spring; 12. a threaded hole; 13. a bolt;

Detailed Description

All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-4, the present utility model provides a technical solution.

The utility model provides a removable shutoff structure of local embedding, includes mounting bracket 1, moving ring 2, wind channel 3 and shutoff piece 4, mounting bracket 1 and moving ring 2 are used for supporting the installation, wind channel 3 is seted up in moving ring 2, shutoff piece 4 is installed on mounting bracket 1, be equipped with the equipment cooperation subassembly on the shutoff piece 4, be equipped with shutoff piece installation component and mounting bracket 1 fixed subassembly on the mounting bracket 1;

wherein, the equipment cooperation subassembly includes: a buckle 5, a matching groove 6 and a butt strap 7;

the buckle 5 is installed in buckle 5 both sides, cooperation groove 6 is seted up in the sprue 4 top, access panel 7 is installed on another sprue 4, access panel 7 is installed in cooperation groove 6.

It should be noted that, in order to be able to carry out the shutoff with wind channel 3 fast and high-efficient, the sprue 4 can be divided into a plurality of parts as required, uses cooperation groove 6 and strap 7 matched with mode to connect between the sprue 4 and can connect more closely when, and buckle 5 is used for assisting the installation of sprue 4 is fixed.

Preferably, the side shape of the blocking block 4 is consistent with the side shape of the air duct 3.

It should be noted that, the shape of the side edge of the blocking piece 4 is consistent with the shape of the side edge of the air duct 3, so that the blocking piece 4 can be more closely attached to the inner side of the air duct 3.

Preferably, the material of the moving ring 2 is a wear-resistant material of high chromium alloy.

It should be noted that the wear-resistant material of the high chromium alloy can effectively prolong the service life of the movable ring 2 of the coal mill.

Preferably, further, the block mounting assembly includes: a clamping groove 8, a clamping block 9, a telescopic rod 10 and a spring 11;

the clamping groove 8 is formed in the frame of the mounting frame 1, the clamping block 9 is mounted in the clamping groove 8, the telescopic rod 10 is connected to the rear of the clamping block 9 and the side wall of the clamping groove 8, and the spring 11 is sleeved on the telescopic rod 10.

When the block 4 is installed, the block 4 is pushed into the mounting frame 1 to be clamped and moved below the clamping block 9, the clamping block 9 ejects the clamping block 5 through the pushing elastic force of the spring 11 to clamp, so that the block 4 is fixedly installed, and when the block 4 is disassembled, a long handle tool is inserted into the fine holes formed in the upper portion of the clamping block 9 and the air duct 3 to jack the clamping block 9 into the clamping groove 8, so that the clamping block 9 and the clamping block 5 are released from clamping, and then the block 4 can be taken out.

Preferably, further, the block mounting assembly and the block 4 are divided into a plurality of parts according to the requirement.

It should be noted that the blocking block installation assembly and the blocking block 4 which are divided into a plurality of parts can block the air duct 3 to different degrees, so that the variable of the size of the air duct 3 can be better controlled.

Preferably, still further, the fixing assembly of the mounting frame 1 includes: a screw hole 12 and a bolt 13;

the threaded holes 12 are formed in the mounting frame 1 and the moving ring 2, and the bolts 13 are installed in the threaded holes 12.

It should be noted that, the mounting frame 1 and the moving ring 2 are fixed by using the threaded holes 12 and the bolts 13, so that the fixation can be more stable.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. The utility model provides a removable shutoff structure of local embedding, includes mounting bracket, rotating ring, wind channel and sprue, mounting bracket and rotating ring are used for carrying out support installation, the wind channel is seted up in the rotating ring, the sprue is installed on the mounting bracket, its characterized in that, be equipped with the equipment cooperation subassembly on the sprue, be equipped with sprue installation component and mounting bracket fixed subassembly on the mounting bracket;

wherein, the equipment cooperation subassembly includes: a buckle, a matching groove and a butt strap;

the buckle is installed in the buckle both sides, the cooperation groove is seted up in the sprue top, the strap is installed on another sprue, the strap is installed in the cooperation inslot.

2. A partially embedded replaceable closure structure according to claim 1, wherein the block side shape conforms to a duct side shape.

3. The partially embedded replaceable seal structure of claim 1, wherein the ring is made of a wear-resistant material of high chromium alloy.

4. The partially embedded replaceable closure structure of claim 1, wherein the block mounting assembly comprises: the clamping groove, the clamping block, the telescopic rod and the spring;

the clamping groove is formed in the mounting frame, the clamping block is mounted in the clamping groove, the telescopic rod is connected to the rear of the clamping block and the side wall of the clamping groove, and the spring is sleeved on the telescopic rod.

5. The partially embedded replaceable closure structure of claim 4, wherein the closure mounting assembly and the closure are divided into a plurality of portions as desired.

6. The partially embedded replaceable seal structure of claim 1 wherein the mounting bracket securing assembly comprises: threaded holes and bolts;

the threaded holes are formed in the mounting frame and the movable ring, and the bolts are arranged in the threaded holes.