CN215141817U

CN215141817U - Automatic reciprocating anti-blocking ball scraping device for raw sieve of shaft furnace

Info

Publication number: CN215141817U
Application number: CN202120571570.1U
Authority: CN
Inventors: 李光; 李建; 赵庆宝; 魏晓阳; 赵辉; 孙彦阔; 王继超; 常胜
Original assignee: Tianjin New Tiangang United Special Steel Co Ltd
Current assignee: Tianjin New Tiangang United Special Steel Co Ltd
Priority date: 2021-03-19
Filing date: 2021-03-19
Publication date: 2021-12-14
Anticipated expiration: 2031-03-19

Abstract

The utility model relates to an automatic reciprocating anti-blocking ball scraping device for a shaft furnace raw sieve, which is arranged above a gap between movable round rollers of the raw sieve, and comprises a gantry type bracket, a base, a ball scraping trolley, a discharging roller, a cycloidal needle speed reducer and a chain, wherein the gantry type bracket is arranged on a belt bracket of the shaft furnace raw sieve, and the base is arranged at the top of the gantry type bracket; the ball scraping trolley is placed in the base and can reciprocate in the base; the discharging rods are arranged at the bottom of the ball scraping trolley and are respectively positioned right above the gap between the movable round rollers of the raw sieve; the cycloidal needle speed reducer is positioned at one end of the base, the output end of the cycloidal needle speed reducer is connected with the driving gear, and the other end of the base is provided with a driven gear; one end of the chain is fixed at the front end of the ball scraping trolley, and the other end of the chain is fixed at the tail end of the ball scraping trolley after being wound by the driving gear and the driven gear. The utility model discloses have the clearance pile material, clear away great pelletizing, can guide the spheroid to flow, make it get into the conveyer belt smoothly, improve sieve roller life.

Description

Automatic reciprocating anti-blocking ball scraping device for raw sieve of shaft furnace

Technical Field

The utility model belongs to the technical field of the sieve is given birth to the shaft furnace, especially relate to a sieve is given birth to shaft furnace prevents stifled ball device of scraping with automatic coming and going.

Background

The shaft furnace raw sieve is used for sieving according to quality indexes caused by shaft furnace pelletizing, and at present, a plurality of shaft furnace raw sieves cannot effectively treat and radically treat pellet accumulation, frequently cause shutdown, and treat pellet accumulation after shutdown. When the shaft furnace raw sieve works, balls with unqualified return quality need to be continuously sieved out of the raw sieve gap, and the main accumulation reason is that the balls cannot enter the raw sieve gap due to overlarge pellets, so that the accumulation phenomenon is caused.

Disclosure of Invention

The utility model discloses a solve the problem that exists among the prior art, provided a shaft furnace is given birth to sieve and is prevented stifled ball device of scraping with automatic coming and going, the device can be to piling up the multi-functional unification device that spheroid and too big spheroid were handled, simple structure does not consume the energy, is convenient for adjust, and the maintenance of being convenient for does not have the injury to the sieving roller, and long service life has and prevents characteristics such as pelletizing heap and handling too big pelletizing.

The utility model discloses a what realize like this, a shaft furnace is given birth to and is used automatic to come and go prevents stifled ball scraping device, prevent stifled ball scraping device and install in the clearance top between the movable round roller of giving birth to the sieve, prevent stifled ball scraping device and include planer-type support, base, ball scraping dolly, row material rod, cycloidal needle speed reducer and chain, planer-type support fixed mounting is on the belt bracket of shaft furnace give birth to the sieve, the base is installed at the top of planer-type support; the ball scraping trolley is placed in the base and can reciprocate in the base; the discharging rollers are fixedly arranged at the bottom of the ball scraping trolley, and each discharging roller is respectively positioned right above a gap between the movable round rollers of the raw sieve; the cycloidal needle speed reducer is positioned at one end of the base, the output end of the cycloidal needle speed reducer is connected with a driving gear, and the other end of the base is provided with a driven gear; one end of the chain is fixed at the front end of the ball scraping trolley and sequentially winds through the driving gear and the driven gear, and the other end of the chain is fixed at the tail end of the ball scraping trolley.

In the technical scheme, preferably, the base at the front and the rear of the ball scraping trolley is provided with the travel limit switches, and the travel limit switches are used for limiting the movement travel of the ball scraping trolley.

In the technical scheme, preferably, the upper ends of the bases at the front and the rear of the ball scraping trolley are also provided with the transmission rollers, and the transmission rollers are used for supporting the chains.

In the above technical scheme, preferably, the left side and the right side of the ball scraping trolley are also provided with auxiliary wheels which are transversely arranged.

In the above technical scheme, preferably, an anti-overturning device is arranged above the ball scraping trolley and is installed on the base.

In the above technical solution, it is further preferable that the rollover prevention device is a long angle iron.

In the technical scheme, preferably, the distance between the bottom end of the discharging roller and the minimum position of the gap between the movable circular rollers is 10-15 mm.

In the above technical solution, preferably, the discharging roller is a cold-drawing roller made of high carbon and having a diameter of 8 mm.

The utility model has the advantages and positive effects that:

the utility model discloses a stifled ball scraping device is prevented with automatic reciprocating to shaft furnace raw sieve, owing to adopted brand-new technical scheme, compared with the prior art, the device drives the ball scraping dolly back and forth movement through control system and speed reducer transmission, can reduce the pelletizing to the raw sieve frictional force, carries out the precision screening to the pellet, improves the pellet quality, prevents the condition of bigger pellet to the blanking point putty, can guide the flow direction to returning the ball feed opening to bigger pellet; the utility model can clean the raw material to be returned and the pellet with quality not meeting the standard in the operation process of the raw sieve through the anti-blocking ball scraping device and smoothly bring the raw material to the necessary passage for returning the raw material in the first time, thereby reducing unnecessary shutdown treatment; the utility model has the characteristics of structural design is reasonable, uses simple to operate, and work efficiency is high.

Drawings

FIG. 1 is a front view of an automatic reciprocating anti-blocking ball scraping device for a raw shaft furnace screen according to an embodiment of the present invention;

FIG. 2 is a top view of an automatic reciprocating anti-blocking ball scraping device for a raw screen of a shaft furnace provided by the embodiment of the invention.

In the figure: 1. a gantry type support; 2. a base; 3. a ball scraping trolley; 4. a discharging stick; 5. a cycloidal needle speed reducer; 6. a chain; 7. a driving gear; 8. a driven gear; 9. a travel limit switch; 10. a transfer roller; 11. an auxiliary wheel; 12. prevent the device of overturning.

Detailed Description

For further understanding of the contents, features and effects of the present invention, the following embodiments are exemplified and will be described in detail with reference to the accompanying drawings:

in the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 and 2, an embodiment of the present invention provides an automatic reciprocating anti-blocking ball-scraping device for a shaft furnace raw sieve, wherein the anti-blocking ball-scraping device is installed above a gap between movable round rollers of the raw sieve, the anti-blocking ball-scraping device comprises a gantry type support 1, a base 2, a ball-scraping trolley 3, a discharging roller 4, a cycloidal needle speed reducer 5 and a chain 6, the gantry type support 1 is fixedly installed on a belt support of the shaft furnace raw sieve, and the base 2 is installed at the top of the gantry type support 1; the ball scraping trolley 3 is placed in the base 2 and can reciprocate in the base 2; the discharging rollers 4 are fixedly arranged at the bottom of the ball scraping trolley 3, and each discharging roller 4 is respectively positioned right above a gap between the movable round rollers of the raw sieve; the cycloidal needle speed reducer 5 is positioned at one end of the base 2, the output end of the cycloidal needle speed reducer 5 is connected with a driving gear 7, and the other end of the base 2 is provided with a driven gear 8 by a lifting lug; one end of the chain 6 is fixed at the front end of the ball scraping trolley 3 and sequentially winds through the driving gear 7 and the driven gear 8, and the other end of the chain 6 is fixed at the tail end of the ball scraping trolley 3.

Preferably, the base 2 at the front and the rear of the ball scraping trolley 3 is provided with a travel limit switch 9, and the travel limit switch 9 is used for limiting the movement travel of the ball scraping trolley 3 and preventing the ball scraping trolley 3 from overtravel movement. The upper ends of the bases 2 in the front and the rear of the ball scraping trolley 3 are also provided with transmission rollers 10, the transmission rollers 10 are belt rollers and are fixed on the bases 2 through lifting lugs, and the transmission rollers 10 are used for supporting the chains 6. The left side and the right side of the ball scraping trolley 3 are also provided with auxiliary wheels 11 which are transversely arranged to prevent deviation, so that the trolley can move straight and smoothly, and corresponding friction is reduced.

Preferably, the top of scraping ball dolly 3 is provided with prevents the device 12 of overturning, prevent that the device 12 of overturning installs on base 2, prevent that the device 12 of overturning is rectangular angle steel, when scraping 3 motion occurrences tilt up and down of ball dolly, can make through rectangular angle steel and scrape ball dolly 3 and receive certain space, prevent the rollover.

Preferably, arrange material rod 4 and be 8 mm's diameter for the cold drawing rod that adopts the high carbon to make, arrange the distance that the minimum department in clearance between the bottom of material rod 4 and the activity circle roller is 10 ~ 15mm, can in time clear up great pelletizing and restrain the pelletizing and pile up.

The working principle of the present invention is explained below with reference to the following embodiments, and the specific process is as follows:

36 raw sieve round rollers are arranged in a raw sieve chamber of the shaft furnace raw sieve in a single row, 30 fixed round rollers which are made of stainless steel and have the same clearance are arranged between a discharging end and a ball scraping device, pellets are arranged through the fixed round rollers with the clearance of 3mm, then pass through 6 movable round rollers respectively regulated to be 16mm, 18mm, 20mm and 22mm through the clearance, and enter a conveying belt after being sieved, and then enter a shaft furnace body of the shaft furnace.

The anti-blocking ball scraping device is arranged above a gap between movable round rollers with the gap of 16mm to 22mm, and a stepped anti-blocking ball scraping device is formed according to different angles of a raw screen. When the raw sieve runs, the ball scraping trolley 3 is driven by the control system and the cycloidal needle speed reducer 5 above the raw sieve roller to move to and fro to the two sides of the raw sieve roller, the reciprocating movement time is once per minute, and the discharging roller 4 slowly brings out an oversize ball from the blanking gap to realize the cleaning effect.

Whole stifled ball device of scraping that prevents need to make according to the regulation, and its portal frame 1 all adopts 70 mm's angle steel to make as the main material to preparation rectangle base 2 fixes base 2 in portal frame 1 upper end again, and portal frame 1 and base 2 should weld firmly, and it is great to prevent to scrape ball device atress, takes place other various phenomena such as whole deformation. The rectangular ball scraping trolley 3 is placed inside the rectangular base 2, the ball scraping trolley 3 is provided with a bearing type sliding wheel, and the auxiliary wheels 11 on two sides of the trolley, which prevent deviation, are also of a bearing type, so that the trolley can move straight, is in smooth transition, and reduces corresponding friction.

Two 50mm by 50mm long angle steels are welded at the upper end of the base 2, so that the ball scraping trolley 3 is prevented from being overturned due to resistance or other conditions when moving; the belt rollers are fixed by the lifting lugs to support the chains 6, and the two belt rollers can smoothly and perfectly transition the chains 6.

A driven gear 8 is arranged at one end of a base 2, the driving end of a small cycloidal pin speed reducer 5 with the speed ratio of 1:350 is aligned and fixed with the central line of the driven gear 8 at the other end, a driving gear 7 is fixed at the output end of the speed reducer, one end of a chain 6 is fixed at the front end of a ball scraping trolley 3, then the chain bypasses the driving gear 7 of the cycloidal pin speed reducer 5, enters the driven gear 8 at the other end, and is finally fixed at the tail end of the ball scraping trolley 3.

Arrange 4 main devices of material rod, arrange the 8mm cold-drawing rod that material rod 4 adopted high carbon material, wear resistance coefficient is high, is difficult to warp, has corresponding oppression power to great pelletizing, and the mounted position becomes vertical, arranges the distance that the bottom of material rod 4 and the minimum department in raw sieve clearance will be higher than 10mm, and this embodiment is apart from the clearance height to be 15 mm. Can clean larger pellets in time and inhibit the stacking phenomenon of the pellets.

The utility model discloses simple structure, the energy consumption is low, is convenient for adjust, has clearance pile material, clears away great pelletizing, can also guide the spheroid to flow, makes it get into the conveyer belt smoothly, improves sieve roller life.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all the modifications and equivalents of the technical spirit of the present invention to any simple modifications of the above embodiments are within the scope of the technical solution of the present invention.

Claims

1. An automatic reciprocating anti-blocking ball scraping device for a shaft furnace raw sieve is characterized in that the anti-blocking ball scraping device is arranged above a gap between movable round rollers of the raw sieve and comprises a gantry type support, a base, a ball scraping trolley, a discharging roller, a cycloidal needle speed reducer and a chain, the gantry type support is fixedly arranged on a belt support of the shaft furnace raw sieve, and the base is arranged at the top of the gantry type support; the ball scraping trolley is placed in the base and can reciprocate in the base; the discharging rollers are fixedly arranged at the bottom of the ball scraping trolley, and each discharging roller is respectively positioned right above a gap between the movable round rollers of the raw sieve; the cycloidal needle speed reducer is positioned at one end of the base, the output end of the cycloidal needle speed reducer is connected with a driving gear, and the other end of the base is provided with a driven gear; one end of the chain is fixed at the front end of the ball scraping trolley and sequentially winds through the driving gear and the driven gear, and the other end of the chain is fixed at the tail end of the ball scraping trolley.

2. The automatic reciprocating anti-blocking ball scraping device for the shaft furnace raw screen as claimed in claim 1, wherein the base at the front and the rear of the ball scraping trolley is provided with a travel limit switch, and the travel limit switch is used for limiting the movement travel of the ball scraping trolley.

3. The automatic reciprocating anti-blocking ball scraping device for the shaft furnace raw screen as claimed in claim 1, wherein the upper ends of the bases at the front and the rear of the ball scraping trolley are further provided with transmission rollers, and the transmission rollers are used for supporting the chain.

4. The automatic reciprocating anti-blocking ball scraping device for the shaft furnace raw screen as claimed in claim 1, wherein the left side and the right side of the ball scraping trolley are also provided with auxiliary wheels which are transversely arranged.

5. The automatic reciprocating anti-blocking ball scraping device for the shaft furnace raw screen according to claim 1, characterized in that an anti-overturning device is arranged above the ball scraping trolley, and the anti-overturning device is installed on a base.

6. The automatic reciprocating anti-clogging and scraping ball device for the raw screen of the shaft furnace as claimed in claim 5, wherein said anti-tip over device is a long angle steel.

7. The automatic reciprocating anti-blocking scraping ball device for the shaft furnace raw screen as claimed in claim 1, wherein the distance between the bottom end of the discharging roller and the minimum gap position of the movable round roller is 10-15 mm.

8. The automatic reciprocating anti-clogging scraping ball device for the raw screen of the shaft furnace as claimed in claim 1, wherein the discharging roller is a cold drawing roller made of high carbon and having a diameter of 8 mm.