CN218723241U - Cleaning device for ring formation in rotary kiln - Google Patents

Abstract

The utility model discloses a cleaning device for the inner ring of a rotary kiln, belonging to production auxiliary equipment, comprising a drill bit, a drill rod, a guide bracket, a track, a movable assembly, a support assembly, a power assembly and a rear adjusting device, wherein the movable assembly comprises a movable trolley, a driving device and a locking mechanism; the support assembly is a support trolley provided with a bracket; the power assembly comprises a hydraulic system, a power oil cylinder and a hydraulic hammer; the rear adjusting device comprises a sliding guide frame, an L-shaped sliding block with a pin hole and a guide rod. Compared with the prior art, the utility model discloses can realize the online clearance to the rotary kiln ring formation thing.

Description

Cleaning device for ring formation in rotary kiln

Technical Field

The utility model relates to a metallurgical production auxiliary assembly, in particular to a device for cleaning a ring in a rotary kiln.

Background

The rotary kiln is mainly used for heating and calcining various mineral materials such as metallurgy, building materials, ores and the like. Due to the influence of a plurality of factors of raw material proportion and production process, low-melting-point silicate compounds are generated in the production process of the rotary kiln, and sponge iron (DRI) ring formation is formed before the distance from 0m to 8m-25m in the kiln from the kiln opening. The formed ring is gradually trumpet-shaped in the length direction, the thickness of the formed ring at 8 meters is 400-600mm, the formed ring gradually extends to 25m, the thickness of the formed ring can reach 1500mm when the formed ring is maximum, and the weight of the formed ring reaches 5T. The ring formation in the rotary kiln mainly has 2 forms: (1) the adhesive is adhered in a kiln and is continuously accumulated, and the kiln mouth is sealed in serious conditions, so that the smooth production is influenced; (2) the rotary kiln rotates along with the rotary kiln and is gathered into large blocks to turn over along with the rotation of the kiln body, the refractory material is scratched in the movement process, and is broken seriously to cause severe vibration of the kiln body, so that the service life of the refractory material is shortened, and the service cycle of the kiln is shortened.

When the ring formation is serious, the kiln needs to be stopped for manually removing the ring formation, otherwise, the availability of the rotary kiln equipment is influenced. The manual looping comprises a loop burning and impacting method, a quenching method and mechanical loop cleaning. At the initial ring forming stage of the rotary kiln, as the ring forming materials are loose in structure, low in metal iron content and low in ring forming hardness, the ring forming materials can be heated to a high temperature and can deform after reaching a softening point at a high temperature, a material block with a high melting point is placed in the kiln to bump the ring, and the ring is ground in a friction mode, a collision mode and the like. In the middle and later ring forming period of the rotary kiln, because ring forming materials are dense, the content of metal iron is high, and the ring forming hardness is high, the ring burning and ring hitting method is ineffective, and a quenching method or mechanical ring cleaning is needed. Mechanical cleaning rings can be used for the occasions where the rings are thin and uniform, the mechanical arm provided with the scraper can be fixed on the trolley, the trolley is arranged in the fixed frame, and the scraper extends into the self-rotating rotary kiln to scrape the materials of the rings. For the thick and uneven occasion of knot, then need utilize small-size rock drill or pneumatic pick to clear up, site operation personnel and operation point distance are close, and the piece that produces in the clearance process and dust constitute the operation safety risk. In order to prevent mechanical deformation at high temperature, the conventional mechanical ring cleaning needs to be carried out after the kiln is stopped, and the common cold kiln needs 2 days, so that the production stop time is long, the consumed time is long, the efficiency is low, the cleaning cost is high, and the production influence is large. In addition, the thickness distribution of the ring on the circumference is different, the mechanical ring cleaning is mostly that the scraper can not be correspondingly adjusted according to the thickness of the ring, and when the uneven deposit is encountered, the mechanical arm is pressed too much and is bent, so that the trolley frame is deformed.

SUMMERY OF THE UTILITY MODEL

The technical task of the utility model is not enough to above prior art, provides a cleaning device of becket bridle in the rotary kiln, can realize the online or non-online clearance to rotary kiln becket bridle thing.

The technical proposal of the utility model for solving the technical problem is that: the utility model provides a rotary kiln inner ring cleaning device, includes bore bit and drill rod, its characterized in that: the device also comprises a guide bracket, a track, a moving assembly, a supporting assembly, a power assembly and a rear adjusting device; the front end of the track is provided with a guide bracket, and the guide bracket comprises a frame and a guide plate with a through hole; the lower end of the frame is connected with the front end of the track, a slide way is arranged on the inner side of the frame, and two sides of the guide plate are embedded in the slide way; a front adjusting device is arranged between the guide plate and the frame; the drill rod penetrates through the through hole of the guide plate; the moving assembly comprises a moving trolley, a driving device and a locking mechanism; the moving trolley is connected with the track in a sliding manner, and the driving device provides power for the moving trolley; the locking mechanism comprises a base with a through hole, a door-shaped frame and a locking oil cylinder; the two bases are fixedly connected to two sides of the movable trolley, and a track is arranged right below the through hole; the door-shaped frame comprises a cross beam and two positioning pins which are fixedly connected, and two ends of the locking oil cylinder are respectively connected with the middle section of the cross beam and the movable trolley; the lower end of the positioning pin penetrates through the through hole of the base; the support assembly is a support trolley provided with a bracket; the support trolley is connected to the track in a sliding mode, the bracket comprises a side plate and a carrier roller, and the carrier roller is rotatably connected with the side plate through a roller frame; a middle adjusting device is arranged between the two ends of the roller frame and the side plates of the bracket; the power assembly comprises a hydraulic system, a power oil cylinder and a hydraulic hammer; the hydraulic system is arranged on the movable trolley and comprises a hydraulic valve table, an oil tank, an oil pump, a motor and a control device; the power oil cylinder is arranged on the movable trolley and is connected with the oil circuit of the hydraulic system through a pipeline; two ends of the hydraulic hammer are respectively connected with the power oil cylinder and the drill rod; the rear adjusting device comprises a sliding guide frame, an L-shaped sliding block with a pin hole and a guide rod; the sliding guide frame is fixedly connected with the movable trolley, the inner side of the sliding guide frame is provided with a slot, and a plurality of pin holes are formed in the slot; the front end of the guide rod is connected with the rear end of the hydraulic hammer, the front lower end of the guide rod is provided with a connecting rod, and the lower end of the connecting rod is connected with a power cylinder pin shaft; the side surface of the guide rod is provided with a sliding chute; the lower end of the L-shaped sliding block is inserted into the slot; the cylindrical inner end of the L-shaped sliding block is embedded into the sliding groove of the guide rod.

Furthermore, a circulating water channel is arranged in the drill rod, circulating cooling water is introduced into the circulating water channel, and the water inlet and the water outlet are positioned at the rear end of the drill rod.

Furthermore, oxygen blowing pipes are arranged in the drill bit and the drill rod.

Furthermore, the device also comprises a drag chain.

Furthermore, the front adjusting device is provided with a pin hole at the corresponding position of the guide plate and the frame, and the pin hole is fixed through a pin.

Furthermore, a clamping device is arranged between the through hole and the drill rod, the clamping device is characterized in that a plurality of tightening rollers are arranged on the back side of the guide plate, the tightening rollers are connected with the guide plate through roller seats, and the roller surfaces are in rolling connection with the drill rod.

Furthermore, the sliding connection between the moving trolley and the supporting trolley and the track is an embedded sliding connection.

Further, the driving device is a double-roller winch.

Furthermore, a guide sleeve is arranged on the base, and the lower end of the positioning pin penetrates through the guide sleeve and is inserted into the through hole.

Furthermore, the middle adjusting device is characterized in that pin holes are formed in the positions, corresponding to the side plates of the bracket, of the two ends of the roller frame and are fixed through pins.

Compared with the prior art, the utility model discloses following outstanding beneficial effect has:

1. the utility model can realize the cleaning of the ring under the condition that the rotary kiln does not stop the cooling kiln, reduce the maintenance cost of the cooling kiln and the kiln cleaning, and improve the availability of the rotary kiln equipment;

2. the service life of the refractory material is prolonged without quenching and extreme heating, the service life of the rotary kiln is prolonged from 30 days to 60 days, and the maintenance cost of equipment is reduced;

3. the cost of cooling and cleaning the kiln is reduced, and the consumption of manpower, machines and tools and the like is reduced;

4. the cleaning device can be used for cleaning the ring knots with different hardness and forms after combined adjustment, can be adjusted according to the thickness, and reduces the damage probability of the cleaning device;

5. the operating personnel need not to enter the interior operation of kiln, has avoided personnel's clearance in-process safe operation risk, for example tumble, scald, injure by a crashing object etc..

Drawings

FIG. 1 is a schematic structural diagram of embodiment 1 of the present invention

Fig. 2 is a schematic view of a front partial structure of embodiment 1 of the present invention.

Fig. 3 is a schematic structural diagram of a mobile assembly and a power assembly according to embodiment 1 of the present invention.

Fig. 4 is a schematic structural view of a rear adjustment device according to embodiment 1 of the present invention.

Fig. 5 is a schematic structural view of a support assembly according to embodiment 1 of the present invention.

Detailed Description

The invention is further described with reference to the drawings and the detailed description. In the following, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the claimed embodiments. Accordingly, the drawings and description are to be regarded as illustrative in nature, and not as restrictive.

In the following embodiments, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the embodiments of the present invention can be understood by those skilled in the art according to specific situations.

For better description, fig. 1 is taken as the front, and vice versa, toward the interior of the rotary kiln. It is to be understood that the terms "central," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," "end," "side," and the like are used in an illustrative and non-restrictive sense, and are intended to cover the specific embodiments shown in the drawings and are used for ease of description and to simplify the description.

The utility model discloses a bore bit 1, guide bracket 2, drill rod 3, track 4, removal assembly 5, support assembly 6, power assembly 7 and back adjusting device 8.

In embodiment 1, as shown in fig. 1 to 5, the bit 1 is mounted on the front end of a drill rod 3 for cleaning a ring.

The drill rod 3 is internally provided with a circulating water channel, circulating cooling water is introduced into the drill rod, and a water inlet 31 and a water outlet 32 are positioned at the rear end of the drill rod 3. In the optimized scheme, oxygen blowing pipes are arranged in the drill bit 1 and the drill rod 3, and the temperature of a ring formation point is increased in an oxygen blowing mode, so that the purpose of melting the ring formation is achieved.

In order to facilitate the moving and rolling of the water pipe and the cable, a drag chain 9 is further arranged in the embodiment and used for placing the cooling water pipe and the cable.

The front end of the track 4 is provided with a guide bracket 2, and the guide bracket 2 comprises a frame 21 and a guide plate 22. The frame 21 lower extreme with track 4 front end be connected, frame 21 inboard have the slide, deflector 22 both sides inlay in the slide, can reciprocate. A front adjusting device is arranged between the guide plate 22 and the frame 21. The guide plate 22 has a through hole through which the drill rod 3 passes. In this embodiment, the front adjusting device is provided with pin holes 23 at corresponding positions of the guide plate 22 and the frame 21, and the front adjusting device is fixed at different heights by pins.

In the preferred embodiment, the drill rod 3 is more than 20 meters long, and in order to reduce wear, a clamping device is arranged between the through hole and the drill rod 3, in this embodiment, the clamping device is provided with a plurality of tightening rollers 24 on the back side of the guide plate 22, the tightening rollers 24 are connected with the guide plate 22 through roller seats, and the roller surfaces are in rolling connection with the drill rod 3.

The track 4 can be an integrated track or a telescopic track, and the telescopic form can be a sleeve type telescopic form or a slide type telescopic form.

The moving assembly 5 comprises a moving trolley 51, a driving device 52 and a locking mechanism.

The moving trolley 51 is slidably connected with the track 4, and the sliding connection in this embodiment is an embedded sliding connection, so as to ensure the stability between the moving trolley 51 and the track 4. The method comprises the following specific steps: the inner side of the track 4 is provided with a slideway, and the travelling wheels of the movable trolley 51 roll in the slideway.

The driving device 52 provides power for the moving trolley 51 to realize the movement of the moving trolley 51. The driving device 52 may be a winch or a stepping motor, and the connection between the driving device 52 and the moving trolley 51 may also be a rack and pinion transmission system. The positioning of the movable trolley 51 can be realized by the modes of track fixed point, motor spacing or gear and rack limiting and the like. The driving device 52 in this embodiment is a double drum winch. The rear end of the track 4 is provided with a double-roller winch which provides power for the moving trolley 51 and rotates forwards and backwards in a positive direction. The concrete connection mode is determined by the type of the winch and can be as follows: the steel wire rope of one winding drum of the double-drum winch is connected with the rear end of the movable trolley 51, and the steel wire rope of the other winding drum is connected with the front end of the movable trolley 51 after being turned to the front part through the fixed pulley at the front part of the track 4.

The locking mechanism comprises a base 55, a door frame and a locking oil cylinder 56. The number of the bases 55 is two, the bases are fixedly connected to two sides of the movable trolley 51, a through hole is formed in each base 55, and the track 4 is arranged right below the through holes. The door-shaped frame comprises a cross beam 58 and two positioning pins 53 which are fixedly connected, the middle section of the cross beam 58 is connected with a piston rod of a locking oil cylinder 56, and a movable trolley 51 at the bottom of the locking oil cylinder 56 is connected. The lower end of the positioning pin 53 penetrates through the through hole of the base 55, in the optimized scheme, the base 55 is provided with a guide sleeve 54, and the lower end of the positioning pin 53 penetrates through the guide sleeve 54 and is inserted into the through hole. When the piston rod is retracted, the door-shaped frame is pressed downwards, and the positioning pin 53 is tightly pressed with the track 4 to realize locking. And when the piston rod extends out, the door-shaped frame is lifted up and is locked in a contact manner. In order to increase the locking strength and reliability, a plurality of positioning holes 57 are formed at the positions of the rail 4 corresponding to the through holes of the base 55, and the lower ends of the positioning pins 53 are inserted into the positioning holes 57 to realize firm locking.

The support assembly 6 is a support trolley 61. The track 4 is connected with a support trolley 61 in a sliding way, and in the optimized scheme, the sliding connection is an embedded sliding connection. The support trolley 61 is provided with a bracket for bearing the drill rod 3. The bracket comprises a side plate 63 and an idler 62, and the idler 62 is rotatably connected with the side plate 63 through a roller frame 64. And a middle adjusting device is arranged between the two ends of the roller frame 64 and the side plate 63 of the bracket. In this embodiment, the middle adjusting device is a pin hole formed at the two ends of the roller frame 64 corresponding to the side plate 63 of the bracket, and the pin holes are fixed at different heights by pins.

The power assembly 7 comprises a hydraulic system, a power cylinder 72 and a hydraulic hammer 73.

The hydraulic system is arranged on the movable trolley 51 and comprises a hydraulic valve table 76, an oil tank 75, an oil pump 71, a motor 74 and a control device. The electric motor 74 provides mechanical energy to the hydraulic system; the oil pump 71 converts mechanical energy provided by the motor 74 into pressure energy of the oil, and outputs high-pressure oil; the pressure energy of the oil is converted into mechanical energy to drive the actuator (the power cylinder 72, the locking cylinder 56 and the hydraulic hammer 73) to do work; the hydraulic valve station 76 controls the pressure, flow and direction of flow of oil from the hydraulic pump to the actuator, thereby controlling the force, speed and direction of the actuator; the oil tank 75 holds hydraulic oil. The above structure is prior art, specific model and connection mode, and will not be described again here.

The power oil cylinder 72 is arranged on the movable trolley 51 and is connected with the oil circuit of the hydraulic system through a pipeline. The front end of the hydraulic rod of the power oil cylinder 72 is connected with the rear end of the hydraulic hammer 73 through a rear adjusting device 8. The front end of the hydraulic hammer 73 is connected with the rear end of the drill rod 3.

The rear adjusting device 8 comprises a sliding guide frame 81, an L-shaped sliding block 85 with a pin hole and a guide rod 82.

The sliding guide frame 81 is fixedly connected with the moving trolley 51. The inner side of the sliding guide frame 81 is provided with a slot 84, and the slot 84 is provided with a plurality of pin holes.

The front end of the guide rod 82 is connected with the rear end of the hydraulic hammer 73, the front lower end of the guide rod 82 is provided with a connecting rod 83, and the lower end of the connecting rod 83 is connected with the power cylinder 72 through a pin shaft. The guide rod 82 is provided with a sliding groove on the side surface.

The lower end of the L-shaped sliding block 85 is inserted into the slot 84, and the height of the sliding block is adjusted by connecting different pin holes through pins. The inner end of the L-shaped sliding block 85 is embedded into the sliding groove of the guide rod 82, the inner end of the L-shaped sliding block 85 in the rear adjusting device is cylindrical, namely, the inner end of the L-shaped sliding block is rotatably connected with the sliding groove on the side surface of the guide rod 82, and the guide rod 82 can rotate by taking the sliding block as a circle center.

The utility model discloses the device can realize the online clearance of rotary kiln ring formation, and the circulation operation of clearance is accomplished in the cooperation of clearance circle operation in-process through 3 height adjustment of drill rod, twin drum hoist engine and locking mechanism, and concrete step and method are as follows:

(1) Before cleaning, cleaning materials in the rotary kiln through the rotary kiln, exposing a ring, and estimating the position away from a kiln opening and the thickness of the ring;

(2) Circulating cooling water is introduced into the drill rod 3 before the ring cleaning device is started; and checking the running state of each part on the travelling car 51;

(3) The height of the drill rod 3 is adjusted by a front adjusting device, a middle adjusting device and a rear adjusting device 8

(4) The movable trolley 51 is moved by a driving device 52 (a double-roller winch) to position the operation point of the drill bit 1;

(5) After reaching the appointed looping position, the movable trolley 51 is positioned and locked through the locking mechanism;

(6) The power cylinder 72 drives the drill rod 3 to perform large-displacement reciprocating motion through the guide rod 82, and a ring with lower hardness is cleaned;

(7) For the ring formation with unobvious cleaning effect of the power cylinder 72, the hydraulic hammer 73 is started to hammer to destroy the ring formation;

(8) For the formed ring with high hardness and unobvious effect of the hydraulic hammer 73, the temperature of the formed ring point can be increased in the form of oxygen blowing of the drill bit 1 and the drill rod 3, and the purpose of melting the formed ring is achieved.

In the embodiment 1, the front adjusting device, the middle adjusting device and the rear adjusting device are adjusted by pre-judging the ring formation condition, so that the position of the drill rod 3 is lifted, and the action point of the drill bit 1 is changed.

It should be noted that the present embodiment is not described in detail, and is a technique known in the art.

It should be noted that while the invention has been described in detail with respect to specific embodiments thereof, it will be apparent to those skilled in the art that various obvious changes can be made therein without departing from the spirit and scope of the invention.

Claims (10)

1. The utility model provides a rotary kiln inner ring cleaning device, includes bore bit and drill rod, its characterized in that: the device also comprises a guide bracket, a track, a moving assembly, a supporting assembly, a power assembly and a rear adjusting device; the front end of the track is provided with a guide bracket, and the guide bracket comprises a frame and a guide plate with a through hole; the lower end of the frame is connected with the front end of the track, a slide way is arranged on the inner side of the frame, and two sides of the guide plate are embedded in the slide way; a front adjusting device is arranged between the guide plate and the frame; the drill rod penetrates through the through hole of the guide plate; the moving assembly comprises a moving trolley, a driving device and a locking mechanism; the moving trolley is connected with the track in a sliding manner, and the driving device provides power for the moving trolley; the locking mechanism comprises a base with a through hole, a door-shaped frame and a locking oil cylinder; the two bases are fixedly connected to two sides of the movable trolley, and a track is arranged right below the through hole; the door-shaped frame comprises a cross beam and two positioning pins which are fixedly connected, and two ends of the locking oil cylinder are respectively connected with the middle section of the cross beam and the movable trolley; the lower end of the positioning pin penetrates through the through hole of the base; the support assembly is a support trolley provided with a bracket; the support trolley is connected to the track in a sliding mode, the bracket comprises a side plate and a carrier roller, and the carrier roller is rotatably connected with the side plate through a roller frame; a middle adjusting device is arranged between the two ends of the roller frame and the side plates of the bracket; the power assembly comprises a hydraulic system, a power oil cylinder and a hydraulic hammer; the hydraulic system is arranged on the movable trolley and comprises a hydraulic valve table, an oil tank, an oil pump, a motor and a control device; the power oil cylinder is arranged on the movable trolley and is connected with the oil circuit of the hydraulic system through a pipeline; two ends of the hydraulic hammer are respectively connected with the power oil cylinder and the drill rod; the rear adjusting device comprises a sliding guide frame, an L-shaped sliding block with a pin hole and a guide rod; the sliding guide frame is fixedly connected with the movable trolley, the inner side of the sliding guide frame is provided with a slot, and a plurality of pin holes are formed in the slot; the front end of the guide rod is connected with the rear end of the hydraulic hammer, the front lower end of the guide rod is provided with a connecting rod, and the lower end of the connecting rod is connected with a power cylinder pin shaft; the side surface of the guide rod is provided with a sliding chute; the lower end of the L-shaped sliding block is inserted into the slot; the cylindrical inner end of the L-shaped sliding block is embedded into the sliding groove of the guide rod.

2. The rotary kiln inner ring cleaning device according to claim 1, characterized in that: the drill rod is internally provided with a circulating water channel, circulating cooling water is introduced into the drill rod, and a water inlet and a water outlet are positioned at the rear end of the drill rod.

3. The rotary kiln inner ring cleaning device according to claim 1, characterized in that: and oxygen blowing pipes are arranged in the drill bit and the drill rod.

4. The rotary kiln inner ring cleaning device according to claim 2, characterized in that: also comprises a drag chain.

5. The rotary kiln inner ring cleaning device according to claim 1, characterized in that: the front adjusting device is characterized in that the guide plate and the frame are provided with pin holes at corresponding positions and are fixed through pins.

6. The rotary kiln inner ring cleaning device according to claim 1, characterized in that: and a clamping device is arranged between the through hole and the drill rod, the clamping device is characterized in that a plurality of tightening rollers are arranged on the back side of the guide plate, the tightening rollers are connected with the guide plate through roller seats, and the roller surfaces are in rolling connection with the drill rod.

7. The rotary kiln inner ring cleaning device according to claim 1, characterized in that: the sliding connection of the moving trolley, the supporting trolley and the track is an embedded sliding connection.

8. The rotary kiln inner ring cleaning device according to claim 1, characterized in that: the driving device is a double-roller winch.

9. The rotary kiln inner ring cleaning device according to claim 1, characterized in that: the base on be equipped with the uide bushing, locating pin lower extreme pass the uide bushing and insert the through-hole.

10. The rotary kiln inner ring cleaning device according to claim 1, characterized in that: the middle adjusting device is characterized in that pin holes are formed in the positions, corresponding to the side plates of the bracket, of the two ends of the roller frame and are fixed through pins.

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