CN210796248U

CN210796248U - Double-layer roasting furnace for lime production

Info

Publication number: CN210796248U
Application number: CN201921675111.7U
Authority: CN
Inventors: 孔凡国
Original assignee: Jiangsu Beishan Building Materials Co ltd
Current assignee: Jiangsu Beishan Building Materials Co ltd
Priority date: 2019-10-08
Filing date: 2019-10-08
Publication date: 2020-06-19
Anticipated expiration: 2029-10-08

Abstract

The utility model relates to the technical field of lime production, and discloses a double-layer roasting furnace for lime production, which comprises a furnace body and an ash discharging device, wherein the bottom of the furnace body is provided with an ash collecting chamber, four ash discharging hoppers are uniformly arranged at the bottom of the ash collecting chamber, an ash discharging bin is arranged below each ash discharging hopper, and a bracket is fixed on the outer wall of the furnace body; a mounting rack is arranged on the bracket and corresponds to the position of the ash unloading bin; the upper end surface of the ash discharging bin is provided with four ash inlets; the four ash inlets are respectively arranged corresponding to the outlets of the four ash discharge hoppers one by one; the ash discharging device is arranged below the ash discharging hopper; the ash discharging device comprises a sealing cover arranged above the ash inlet, a rotating shaft which is rotatably arranged in the sealing cover and is horizontally arranged, a plurality of blades arranged on the rotating shaft, and a motor arranged on the mounting frame; the upper end and the lower end of the sealing cover are both open structures; one end of the rotating shaft close to the mounting frame extends outwards of the sealing cover and is connected with an output shaft of the motor. The utility model has the advantages of it is following and effect: it can ensure smooth unloading and uniform lime calcination.

Description

Double-layer roasting furnace for lime production

Technical Field

The utility model relates to a lime production technical field, in particular to lime production is with double-deck burning furnace that bakes burning over a slow fire.

Background

The lime roasting furnace mainly comprises a kiln body, a feeding device, a distributing device, a combustion device, an ash discharging device, an electric appliance, an instrument control device, a dust removal device and the like. The limestone and fuel are put into a lime roasting furnace to be preheated to 850 ℃ and then begin to be decomposed, the calcination is completed when the temperature is 1200 ℃, and then the limestone and fuel are discharged out of the kiln after being cooled, thereby completing the production of the quick lime product.

The lime kiln of the prior art is characterized in that a grate and side grates are fixedly arranged at the lower part of a hearth, the grate is of a square frustum structure formed by welding a plurality of steel pipes, a main grate is fixedly arranged under the hearth, the side grates are fixedly arranged around the main grate, an ash discharge channel leading to the front, back, left and right directions is respectively formed between the main grate and the side grates, a rectangular ash discharge vehicle is respectively arranged below each ash discharge channel in each direction, dead corners are easily formed at four corners at the bottom of the grate, the falling of lime at the upper part is blocked, and the discharging is not smooth.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims at providing a lime production is with double-deck burning furnace that bakes burning over a slow fire, it can guarantee to unload unobstructed for lime calcines evenly.

The above technical purpose of the present invention can be achieved by the following technical solutions:

a double-layer roasting furnace for lime production comprises a furnace body and an ash discharging device, wherein an ash collecting chamber is arranged at the bottom of the furnace body, four ash discharging hoppers are uniformly arranged at the bottom of the ash collecting chamber, an ash discharging bin is arranged below each ash discharging hopper, and a support is fixed on the outer wall of the furnace body; a mounting frame is arranged on the bracket and corresponds to the position of the ash unloading bin; the upper end surface of the ash discharging bin is provided with four ash inlets; the four ash inlets are respectively arranged corresponding to the outlets of the four ash discharge hoppers one by one; the ash discharging device is arranged below the ash discharging hopper; the ash discharging device comprises a sealing cover arranged above the ash inlet, a rotating shaft which is rotatably arranged in the sealing cover and is horizontally arranged, blades arranged on the rotating shaft and a motor arranged on the mounting frame; a plurality of blades are uniformly distributed along the circumferential direction of the rotating shaft; the upper end and the lower end of the sealing cover are both open structures; one end of the rotating shaft, which is close to the mounting frame, extends outwards of the sealing cover and is connected with an output shaft of the motor.

Through adopting above-mentioned technical scheme, aim at the discharge gate of unloading the ash bucket through two adjacent blades, when making the output shaft of motor drive the pivot and rotate, originally aim at two blades of unloading the ash bucket and rotate other positions, make the building stones that mix with between two blades can get into the unloading storehouse of below in, with the rotation of this two blade adjacent blades along with the pivot, aim at the below of unloading the ash bucket, through control motor pivoted speed, make the ash unloading device can unload the building stones into the unloading storehouse intermittently, can guarantee to unload unobstructed, the building stones can not pile up on the blade, can carry the unloading storehouse smoothly with the building stones between two blades in, make the building stones calcine evenly. In addition, directly rotate through the pivot and carry the building stones to the unloading storehouse of below in, relative traditional bent axle mechanism drive the reciprocating motion of unloading the grey car, the operation is simpler, and work efficiency is higher, and is more energy-conserving, and the unloading speed is faster.

The utility model is further arranged that one side of the blade is provided with a mounting bar; a plurality of dovetail grooves are formed in the outer wall of the rotating shaft at intervals along the length direction of the rotating shaft; the mounting bar is matched with the dovetail groove; one end of the dovetail groove extends to the end part of the rotating shaft, which is far away from the motor; one end cartridge that the dovetail deviates from the motor has butt strip and butt strip to pass through the mounting fixed.

Through adopting above-mentioned technical scheme, set up dovetail and mounting bar for it is more convenient that the blade installation is dismantled, and when the blade damages and needs to be changed, only need insert the blade along the one end of pivot from the dovetail, and rethread mounting is fixed can, easy operation is convenient.

The utility model is further provided with that the sealing cover comprises an upper cover body covered on the outer wall of the ash discharging hopper and a lower cover body arranged on the ash discharging bin and fixedly connected with the upper cover body; the lower end of the upper cover body and the upper end of the lower cover body are both provided with a fixing part; the end surface of the fixed part close to the rotating shaft is provided with a groove matched with the outer wall of the rotating shaft; the top of the upper cover body and the inner side of the upper cover body are provided with abutting pieces; the abutting piece is tightly attached to the outer wall of the ash discharge hopper; an installation plate is arranged on the outer wall of the lower cover body and close to the bottom of the sealing cover; the mounting plate is fixed on the upper end surface of the ash unloading bin through a fastener.

Through adopting above-mentioned technical scheme, earlier locate the below of unloading the ash bucket with the upper shield body cover, upwards push away the upper shield body, make the outer wall at the unloading the ash bucket of upper shield body card, the upper end face in the unloading storehouse is being installed to the cover body down, erect the pivot on the fixed part of the cover body down again, get into through the one end cartridge that deviates from the motor with the blade from the pivot, the tip of pivot is fixed to the rethread mounting, move down the upper shield body at last, make the upper shield body and the synthetic sealed cowling of the lower cover body, it is fixed with the upper shield body and the lower cover body through the bolt. The upper end of the upper cover body is attached to the outer wall of the ash discharging hopper, so that too much dust cannot escape during ash discharging, the working environment is kept clean and tidy, lime is not easy to fly away after being calcined, and the loss of lime leakage is reduced.

The utility model is further arranged that the end of the rotating shaft departing from the motor is provided with a thread groove; the fixing piece comprises a threaded column in threaded connection with the threaded groove and an end cover fixed at the end part of the threaded column, which deviates from the rotating shaft.

Through adopting above-mentioned technical scheme, close soon with the tip of pivot through the screw thread post, carry on spacingly to the tip installation of butt strip, because the blade is installed in the dovetail, the notch width of dovetail is less than the width of its tank bottom for the blade is difficult for breaking away from with being connected of pivot, sets up the end cover, can fix spacingly to the tip of butt strip, makes the position of mounting bar difficult for removing, and overall installation structure is more reliable and more stable.

The utility model is further provided with that the abutting part comprises two movable grooves arranged at the inner side of the upper cover body, a pressing plate arranged in the movable grooves in a sliding way, and a spring connecting the pressing plate and the movable grooves; and a clamping groove matched with the outer wall of the ash discharging hopper is formed in the end face, close to the ash discharging hopper, of the pressing plate.

Through adopting above-mentioned technical scheme, set up the butt piece, when the sealed cowling is installed, the butt piece can make the upper shield body shift up one section distance along the outer wall of unloading the ash bucket to make the epaxial blade of rotating be convenient for install, after the blade is installed, the upper shield body is as an organic whole with the lower cover body, and the clamp plate can remain throughout with the laminating of unloading the ash bucket outer wall under the effect of spring, guarantees overall structure's leakproofness.

The utility model discloses further set up to, blade length direction's both ends all are equipped with the flexible scraper blade with the laminating of sealed cowling inner wall.

Through adopting above-mentioned technical scheme, set up flexible scraper blade, when the blade rotates, can scrape the lime that adheres to the sealed cowling inner wall down through flexible scraper blade for lime can obtain the biggest utilization, can not cause the waste.

The utility model is further arranged in that the furnace body is divided into a preheating section, a calcining section and a cooling section from top to bottom; the upper end of the preheating section is in a straight cylinder shape, and the lower end of the preheating section is in a conical shape gradually expanding outwards; the upper end of the calcining section is in a conical shape extending along the lower end of the preheating section, and the lower end of the calcining section is in a straight cylinder shape; the upper end of the cooling section is in a straight cylinder shape extending along the lower end of the calcining section, and the lower end of the cooling section is in a conical shape gradually extending inwards.

By adopting the technical scheme, the general roasting furnace is in a straight cylinder shape, the stone descends vertically and stably, the inner wall of the furnace body is set to be in a stage shape, the stone continuously changes the heating surface after being rolled for several times, the roasting is enhanced, the stone is more uniform when being heated in the furnace body, and the product production quality is improved.

The utility model discloses further set up as, the furnace body includes that firebrick layer, the inboard that from interior to exterior set gradually are equipped with insulation material's shell.

Through adopting above-mentioned technical scheme, the furnace body adopts the multilayer structure, and the inner wall is the firebrick layer, has guaranteed furnace body overall structure's refractiveness, sets up the shell into the heat preservation, improves the heat utilization efficiency, is favorable to the energy saving, guarantees to stabilize in the furnace body at higher temperature, and the lime of firing is of high quality.

To sum up, the utility model discloses a beneficial technological effect does:

the stone is directly conveyed into the lower ash discharging bin through the rotation of the rotating shaft, and compared with the traditional crankshaft mechanism which drives the ash discharging vehicle to reciprocate, the stone discharging bin has the advantages of simpler operation, higher working efficiency, more energy conservation and higher ash discharging speed;

the dovetail groove and the mounting strip are arranged, so that the blade is more convenient to mount and dismount, when the blade is damaged and needs to be replaced, the blade only needs to be inserted from the dovetail groove along one end of the rotating shaft and then fixed through the fixing piece, and the operation is simple and convenient;

the furnace body adopts the multilayer structure, and the inner wall is the firebrick layer, has guaranteed furnace body overall structure's refractiveness, sets up the shell into the heat preservation, improves the heat utilization rate, is favorable to the energy saving, guarantees to stabilize in the furnace body at higher temperature, and the lime of firing is of high quality.

Drawings

FIG. 1 is a schematic view of the overall structure of the embodiment;

FIG. 2 is a schematic structural view of a furnace body according to the embodiment;

FIG. 3 is a schematic structural view of an ash discharge apparatus according to an embodiment;

FIG. 4 is a schematic view of a shaft and blade mounting arrangement of an embodiment;

FIG. 5 is a schematic view of the abutment structure of the embodiment.

Reference numerals: 1. a furnace body; 11. a dust collecting chamber; 12. an ash discharge hopper; 13. an ash unloading bin; 131. an ash inlet; 14. a support; 141. a mounting frame; 15. a preheating section; 16. a calcination section; 17. a cooling section; 18. a refractory brick layer; 19. a housing; 2. a feeding device; 3. an ash discharge device; 31. a sealing cover; 311. an upper cover body; 312. a lower cover body; 313. a fixed part; 314. a groove; 315. mounting a plate; 32. a rotating shaft; 321. a dovetail groove; 322. an abutment bar; 323. a thread groove; 33. a blade; 331. mounting a bar; 332. a flexible scraper; 34. a motor; 4. a fixing member; 41. a threaded post; 42. an end cap; 5. a fastener; 6. an abutting member; 61. a movable groove; 62. pressing a plate; 621. a card slot; 63. a spring.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1, the double-layer roasting furnace for producing lime comprises a furnace body 1, a feeding device 2 which is arranged at one side of the furnace body 1 and extends towards the top of the furnace body 1, and an ash discharging device 3 which is arranged at the bottom of the furnace body 1. A bracket 14 for supporting the furnace body 1 is fixed on the outer wall of the furnace body 1, a mounting rack 141 is fixed on the bracket 14 and at a position corresponding to the ash discharging bin 13, and the mounting rack 141 is a rectangular frame. The bottom of the furnace body 1 is provided with an ash collecting chamber 11, the bottom of the ash collecting chamber 11 is evenly provided with four ash discharging hoppers 12 in an inverted frustum shape, and an ash discharging bin 13 is arranged below the ash discharging hoppers 12. The upper end surface of the ash discharging bin 13 is provided with four ash inlets 131, and the four ash inlets 131 (as shown in fig. 3) are respectively arranged corresponding to the outlets of the four ash discharging hoppers 12 one by one.

As shown in figure 2, the furnace body 1 comprises a refractory brick layer 18 and a shell 19, wherein the refractory brick layer 18 and the shell are sequentially arranged from inside to outside, the inner side of the shell is provided with a heat insulation material, and the heat insulation material is heat insulation cotton. The furnace body 1 is divided into a preheating section 15, a calcining section 16 and a cooling section 17 from top to bottom. The upper end of the preheating section 15 is in a straight cylinder shape, the lower end of the preheating section 15 is in a cone shape gradually expanding outwards, the upper end of the calcining section 16 is in a cone shape extending along the lower end of the preheating section 15, the lower end of the calcining section 16 is in a straight cylinder shape, the upper end of the cooling section 17 is in a straight cylinder shape extending along the lower end of the calcining section 16, and the lower end of the cooling section 17 is in a cone shape gradually extending inwards.

As shown in fig. 3, the dust discharging device 3 is installed below the dust hopper 12. The dust discharging device 3 includes a sealing cover 31 installed above the dust inlet 131, a rotating shaft 32 rotatably installed in the sealing cover 31 and horizontally disposed, a blade 33 fixed on the rotating shaft 32, and a motor 34 installed on the mounting frame 141.

The upper and lower ends of the sealing cover 31 are both open structures. The sealing cover 31 comprises an upper cover body 311 covering the outer wall of the ash hopper 12 and a lower cover body 312 which is arranged on the ash discharging bin 13 and is fixedly connected with the upper cover body 311. The lower end of the upper cover 311 and the upper end of the lower cover 312 are both formed with a fixing portion 313, and a groove 314 matched with the outer wall of the rotating shaft 32 is formed on the end surface of the fixing portion 313 close to the rotating shaft 32. The top of the upper cover body 311 and the inner side of the upper cover body 311 are provided with the abutting pieces 6, and the abutting pieces 6 are tightly attached to the outer wall of the ash hopper 12. The outer wall of the lower cover 312 and the position close to the bottom of the sealing cover 31 are welded with a mounting plate 315, the mounting plate 315 is fixed on the upper end surface of the dust discharging bin 13 through a fastener 5, and the fastener 5 is preferably a fixing bolt.

As shown in fig. 3 and 4, a plurality of blades 33 are uniformly distributed along the circumferential direction of the rotating shaft 32, and the number of the blades 33 is preferably two. One end of the rotating shaft 32 near the mounting bracket 141 extends out of the sealing cover 31 and is connected with an output shaft of the motor 34. Flexible scrapers 332 attached to the inner wall of the seal cover 31 are attached to both ends of the blade 33 in the longitudinal direction. A mounting strip 331 is formed on the blade 33 on the side adjacent to the flexible scraper 332, and the mounting strip 331 is provided along the longitudinal direction of the blade 33.

Dovetail grooves 321 are arranged on the outer wall of the rotating shaft 32 at intervals along the length direction of the rotating shaft 32, and the mounting strip 331 is matched with the dovetail grooves 321. The end of the shaft 32 facing away from the motor 34 is provided with a threaded groove 323. One end of the dovetail groove 321 extends to the end part of the rotating shaft 32 departing from the motor 34, one end of the dovetail groove 321 departing from the motor 34 is inserted with an abutting strip 322 matched with the dovetail groove 321, and the abutting strip 322 is fixed through a fixing piece 4. The fixing member 4 includes a screw post 41 screwed with the screw groove 323, and an end cap 42 fixed to an end of the screw post 41 facing away from the rotation shaft 32.

As shown in fig. 5, the contact member 6 includes two movable grooves 61 opened inside the upper cover 311, a pressing plate 62 slidably disposed in the movable grooves 61, and a spring 63 connecting the pressing plate 62 and the movable grooves 61. The end surface of the pressing plate 62 close to the ash bucket 12 (as shown in fig. 3) is provided with a clamping groove 621 matched with the outer wall of the ash bucket 12.

When the lime discharging device is used, calcined lime falls into the four lime discharging hoppers 12 respectively, the motor 34 drives the rotating shaft 32 to rotate, so that the lime falling on the upper end surfaces of the blades 33 can fall into the lime discharging bin 13, the rotating speed of the motor 34 is adjusted, the lime discharging device 3 can achieve intermittent discharging, the valve at the bottom of the lime discharging bin 13 is opened finally, the lime finally falls on the conveying device and is conveyed out, and the whole working process is completed.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a lime production is with double-deck roasting furnace, includes furnace body (1), dust discharging device (3), the bottom of furnace body (1) is equipped with dust collecting chamber (11), four ash discharging buckets (12) have evenly been arranged to the bottom of dust collecting chamber (11), the below of ash discharging bucket (12) is equipped with ash discharging bin (13), characterized by: a bracket (14) is fixed on the outer wall of the furnace body (1); a mounting rack (141) is arranged on the bracket (14) and at a position corresponding to the ash discharging bin (13); the upper end surface of the ash discharging bin (13) is provided with four ash inlets (131); the four ash inlets (131) are respectively arranged corresponding to the outlets of the four ash discharge hoppers (12) one by one; the ash discharging device (3) is arranged below the ash discharging hopper (12); the ash discharging device (3) comprises a sealing cover (31) arranged above the ash inlet (131), a rotating shaft (32) which is rotatably arranged in the sealing cover (31) and is horizontally arranged, blades (33) arranged on the rotating shaft (32) and a motor (34) arranged on the mounting rack (141); a plurality of blades (33) are uniformly distributed along the circumferential direction of the rotating shaft (32); the upper end and the lower end of the sealing cover (31) are both open structures; one end of the rotating shaft (32) close to the mounting frame (141) extends out of the sealing cover (31) and is connected with an output shaft of the motor (34).

2. The double-layer roasting furnace for lime production according to claim 1, wherein the roasting furnace comprises: one side of the blade (33) is provided with a mounting strip (331); a plurality of dovetail grooves (321) are formed in the outer wall of the rotating shaft (32) at intervals along the length direction of the rotating shaft; the mounting bar (331) is matched with the dovetail groove (321); one end of the dovetail groove (321) extends to the end part of the rotating shaft (32) departing from the motor (34); one end of the dovetail groove (321) departing from the motor (34) is inserted with an abutting strip (322), and the abutting strip (322) is fixed through a fixing piece (4).

3. The double-layer roasting furnace for lime production according to claim 1, wherein the roasting furnace comprises: the sealing cover (31) comprises an upper cover body (311) covering the outer wall of the ash discharging hopper (12) and a lower cover body (312) arranged on the ash discharging bin (13) and fixedly connected with the upper cover body (311); the lower end of the upper cover body (311) and the upper end of the lower cover body (312) are both provided with a fixing part (313); the end surface of the fixing part (313) close to the rotating shaft (32) is provided with a groove (314) matched with the outer wall of the rotating shaft (32); the top of the upper cover body (311) and the inner side of the upper cover body (311) are provided with abutting pieces (6); the abutting piece (6) is tightly attached to the outer wall of the ash discharging hopper (12); a mounting plate (315) is arranged on the outer wall of the lower cover body (312) and close to the bottom of the sealing cover (31); the mounting plate (315) is fixed on the upper end surface of the ash discharging bin (13) through a fastener (5).

4. The double-layer roasting furnace for lime production according to claim 2, wherein the roasting furnace comprises: a thread groove (323) is formed in the end part, away from the motor (34), of the rotating shaft (32); the fixing piece (4) comprises a threaded column (41) in threaded connection with the threaded groove (323) and an end cover (42) fixed at the end part, deviating from the rotating shaft (32), of the threaded column (41).

5. The double-layer roasting furnace for lime production according to claim 3, wherein the roasting furnace comprises: the abutting part (6) comprises two movable grooves (61) arranged on the inner side of the upper cover body (311), a pressing plate (62) arranged in the movable grooves (61) in a sliding mode, and a spring (63) connecting the pressing plate (62) and the movable grooves (61); and a clamping groove (621) matched with the outer wall of the ash discharging hopper (12) is formed in the end face, close to the ash discharging hopper (12), of the pressing plate (62).

6. The double-layer roasting furnace for lime production according to claim 1, wherein the roasting furnace comprises: and flexible scrapers (332) attached to the inner wall of the sealing cover (31) are arranged at two ends of the blade (33) in the length direction.

7. The double-layer roasting furnace for lime production according to claim 1, wherein the roasting furnace comprises: the furnace body (1) is divided into a preheating section (15), a calcining section (16) and a cooling section (17) from top to bottom; the upper end of the preheating section (15) is in a straight cylinder shape, and the lower end of the preheating section (15) is in a conical shape gradually expanding outwards; the upper end of the calcining section (16) is in a conical shape extending along the lower end of the preheating section (15), and the lower end of the calcining section (16) is in a straight cylinder shape; the upper end of the cooling section (17) is in a straight cylinder shape extending along the lower end of the calcining section (16), and the lower end of the cooling section (17) is in a conical shape gradually extending inwards.

8. The double-layer roasting furnace for lime production according to claim 1, wherein the roasting furnace comprises: the furnace body (1) comprises a refractory brick layer (18) and a shell (19) with the inner side provided with a heat insulation material, wherein the refractory brick layer and the shell are sequentially arranged from inside to outside.