Double-hearth parallel flow heat accumulating type lime shaft kiln

Abstract

The utility model discloses a double-hearth parallel flow heat accumulating type lime shaft kiln which comprises a combustion kiln, a feeding machine, a calcining furnace, a smoke exhaust pipe, an igniter, a material guiding device, a gas pipe and a mounting base. According to the utility model, the material guide device is arranged, and the barrel body is arranged in the calcining furnace, so that the barrel body can isolate a product above the barrel body and the feeding pipe, production raw materials can be calcined above the barrel body and the feeding pipe, and the barrel body is matched to isolate the lower part of the calcining furnace; hot air can be promoted to play a heat storage role on the bottom of the calcining furnace, it is guaranteed that follow-up hot air can play a follow-up calcining role on products, and then production raw materials are guided to flow in the calcining furnace through the material guiding device, so that the production raw materials can be fully combusted and calcined in the calcining furnace; and the problem that the heat utilization rate of the calcining furnace is low in the limestone calcining process due to the fact that the calcining furnace cannot be preheated in the original equipment is solved.

Description

Technical Field

[0001] The utility model relates to the field of lime production equipment, in particular to a double-shaft parallel-flow regenerative lime shaft kiln. Background Art

[0002] Limestone (CaCO3) is an important ore resource for a double-shaft parallel-flow regenerative lime shaft kiln, and is widely used in the fields of construction, metallurgy, chemistry, medicine, etc. The demand for limestone will continue to grow in the field of building materials. Lime enterprises need to improve production efficiency, reduce costs, and improve product quality in order to remain invincible in the market. Our company originally used raw materials with two particle sizes of 4-8 cm and 8-11 cm. The research goal of this project is to formulate a production plan and adjust process operations to guide production by statistically analyzing and collecting data on the operation and influence of the double-shaft lime kiln.

[0003] The Chinese patent document with the publication number CN209957658U discloses a lime calcination furnace with uniform heat reception. In the original equipment, when the motor two is started to rotate, the spiral conveyor shaft in the transmission pipeline one will rotate, and the limestone particles in the ground feeding box will enter the transmission pipeline one along the inclined plane of the ground feeding box. Under the spiral rotation of the spiral conveyor shaft, they will be continuously transported upward, so that the equipment has the advantage of rapid feeding.

[0004] However, there are still deficiencies in the calcination structure of the original equipment: since the calcination furnace cannot be preheated, when a large amount of production raw materials fall into the calcination furnace, the calcination furnace needs to consume more heat in the process of increasing its own heat, resulting in a low heat utilization rate in the process of calcining limestone in the calcination furnace. Therefore, it is necessary to improve the calcination structure of the calcination furnace. Content of the Utility Model

[0005] Therefore, in order to solve the above deficiencies, the utility model provides a double-shaft parallel-flow regenerative lime shaft kiln.

[0006] To achieve the above object, the utility model adopts the following technical solutions: A double-chamber parallel-flow regenerative lime shaft kiln, comprising a combustion kiln, a feeding machine, a calcining furnace, a smoke exhaust pipe, an igniter, a feeding guide device, a gas pipe, and a mounting seat. The combustion kiln is fixed to the inner bottom end of the mounting seat. A feeding machine is installed at the right end of the combustion kiln. The calcining furnace is fixed inside the combustion kiln. The smoke exhaust pipe is arranged at the top of the combustion kiln. The igniter is installed at the front end of the combustion kiln. The feeding guide device is fixed inside the calcining furnace. The gas pipe is arranged at the left end of the combustion kiln. The feeding guide device includes a cylinder body, a feeding pipe, a limiting pin, a limiting spring, a slider, and a pusher. A feeding pipe is arranged at the top of the cylinder body. The cylinder body is fixed inside the calcining furnace and is also fixed to the front end of the combustion kiln. The limiting pin is arranged inside the feeding pipe and is in interference fit with the inner part of the limiting spring. The limiting spring is fixed inside the feeding pipe. The slider is arranged at the right end of the limiting spring and is slidably connected to the bottom of the cylinder body. The pusher is installed inside the cylinder body and is in transmission cooperation with the bottom of the slider.

[0007] As a further solution of the utility model, the pusher includes a housing, a servo motor, a driving gear, a driven gear, a transmission frame, and a feeding hopper. The servo motor is installed at the front end of the housing. The servo motor is in interference transmission with the inner part of the driving gear by means of a coupling. The driving gear is in external meshing transmission with the driven gear. The driven gear is rotatably connected to the inside of the housing. The driven gear is in interference transmission with the inner part of the transmission frame. The transmission frame is in transmission connection with the top of the feeding hopper. The feeding hopper is in transmission cooperation with the bottom of the slider.

[0008] As a further solution of the utility model, the cylinders are symmetrically arranged inside the cylinder body.

[0009] As a further solution of the utility model, the limiting pin and the limiting spring are arranged horizontally at the same level inside the cylinder body.

[0010] As a further solution of the utility model, the bottom of the cylinder body is of a hollow structure.

[0011] As a further solution of the utility model, there are two groups of driven gears. Both groups of driven gears are arranged at the lower end of the driving gear. Both groups of driven gears are in meshing transmission with the bottom of the driving gear.

[0012] As a further solution of the utility model, the driven gears are symmetrically arranged at the bottom of the driving gear, ensuring that under the drive of the driving gear, the two groups of driven gears can drive the transmission frame to rotate in the reverse direction.

[0013] As a further solution of the utility model, transmission frames are installed at the bottoms of the driven gears.

[0014] Compared with the prior art, the utility model provides a double-chamber parallel-flow regenerative lime shaft kiln, which has the following beneficial effects:

[0015] 1. In the utility model, a feeding device is arranged. By arranging the cylinder body inside the calcining furnace, the cylinder body can isolate the product above the cylinder body and the feeding pipe, so that the production raw materials can be calcined above the cylinder body and the feeding pipe. In cooperation with the cylinder body isolating the lower part of the calcining furnace, the hot gas can play a role in storing heat at the bottom of the calcining furnace, ensuring that the subsequent hot gas can play a role in calcining the product. By starting the pusher to push the slider, the slider can, under the cooperation of the limiting spring, put the materials inside the feeding pipe into the calcining furnace for multiple calcinations. Thus, by guiding the production raw materials to flow inside the calcining furnace through the feeding device, the production raw materials can be fully combusted and calcined inside the calcining furnace, effectively improving the extraction efficiency of the production raw materials, and further solving the problem that in the original equipment, due to the inability to preheat the calcining furnace, when a large amount of production raw materials fall into the calcining furnace, the calcining furnace needs to consume more heat in the process of increasing its own heat, resulting in low heat utilization rate during the calcination of limestone in the calcining furnace.

[0016] 2. In the utility model, a pusher is arranged at the upper end of the feeding device. By starting the servo motor to drive the driving gear to rotate, the driving gear is engaged with the driven gear for transmission. Then, the driven gear drives the transmission frame to swing, so that the transmission frame can drive the feeding hopper to move. And the feeding hopper pulls the slider to move, so that the products or production raw materials inside the feeding pipe can fall into the lower part of the calcining furnace for calcination. Thus, by starting the pusher to push the slider, the slider can, under the cooperation of the limiting spring, put the materials inside the feeding pipe into the calcining furnace for multiple calcinations. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is the three-dimensional structure schematic diagram of the utility model;

[0018] Figure 2 is the planar structure schematic diagram of the utility model;

[0019] Figure 3 is the three-dimensional structure schematic diagram of the feeding device of the utility model;

[0020] Figure 4 is the internal structure schematic diagram of the feeding device of the utility model;

[0021] Figure 5 is the structure schematic diagram of the pusher of the utility model.

[0022] Wherein: combustion kiln - 1, feeding machine - 2, calcining furnace - 3, exhaust pipe - 4, igniter - 5, material guiding device - 6, gas pipe - 7, mounting seat - 8, cylinder body - 61, feeding pipe - 62, limiting pin - 63, limiting spring - 64, slider - 65, pusher - 66, housing - 661, servo motor - 662, driving gear - 663, driven gear - 664, driving frame - 665, material guiding hopper - 666. Detailed implementation manner

[0023] In order to further explain the technical solution of the present invention, the following will be elaborated in detail through specific embodiments.

[0024] Please refer to Figure 1 - Figure 2 , in the embodiment of the present invention:

[0025] A double - chamber co - current regenerative lime shaft kiln includes a combustion kiln 1, a feeding machine 2, a calcining furnace 3, an exhaust pipe 4, an igniter 5, a material guiding device 6, a gas pipe 7, and a mounting seat 8. The combustion kiln 1 is fixed to the inner bottom end of the mounting seat 8. A feeding machine 2 is installed at the right end of the combustion kiln 1. The calcining furnace 3 is fixed inside the combustion kiln 1. The exhaust pipe 4 is arranged at the top of the combustion kiln 1. The igniter 5 is installed at the front end of the combustion kiln 1. The material guiding device 6 is fixed inside the calcining furnace 3. The gas pipe 7 is arranged at the left end of the combustion kiln 1.

[0026] Please refer to Figure 3 - Figure 4 , in the embodiment of the present invention:

[0027] The material guiding device 6 includes a cylinder body 61, a feeding pipe 62, a limiting pin 63, a limiting spring 64, a slider 65, and a pusher 66. A feeding pipe 62 is arranged at the top of the cylinder body 61. The cylinder body 61 is fixed inside the calcining furnace 3 and is also fixed to the front end of the combustion kiln 1. The limiting pin 63 is arranged inside the feeding pipe 62 and is in interference fit with the inside of the limiting spring 64. The limiting spring 64 is fixed inside the feeding pipe 62. The slider 65 is arranged at the right end of the limiting spring 64 and is slidably connected to the bottom of the cylinder body 61. The pusher 66 is installed inside the cylinder body 61 and is in transmission cooperation with the bottom of the slider 65. The cylinder bodies 61 are symmetrically arranged inside the cylinder body 61. The limiting pin 63 and the limiting spring 64 are arranged horizontally at the same level inside the cylinder body 61. The bottom of the cylinder body 61 is of a hollow structure.

[0028] Please refer to 5, in the embodiment of the present invention:

[0029] The pusher 66 includes a housing 661, a servo motor 662, a driving gear 663, a driven gear 664, a transmission frame 665, and a feeding hopper 666. A servo motor 662 is installed at the front end of the housing 661. The servo motor 662 is internally engaged and driven with the driving gear 663 by means of a coupling. The driving gear 663 is externally meshed and driven with the driven gear 664. The driven gear 664 is rotatably connected to the inside of the housing 661. The driven gear 664 is internally engaged and driven with the transmission frame 665. The transmission frame 665 is drivingly connected to the top of the feeding hopper 666. The feeding hopper 666 is drivingly engaged with the bottom of the slider 65. There are two sets of driven gears 664, and both sets of driven gears 664 are arranged at the lower end of the driving gear 663. Both sets of driven gears 664 are meshed and driven with the bottom of the driving gear 663. The driven gears 664 are symmetrically arranged at the bottom of the driving gear 663 to ensure that under the drive of the driving gear 663, the two sets of driven gears 664 can drive the transmission frame 665 to rotate in the reverse direction. Transmission frames 665 are installed at the bottoms of the driven gears 664.

[0030] Reference Figure 1 - Figure 5 , during use, the gas storage tank is connected through the gas pipe 7, so that the gas pipe 7 can flow into the interior of the combustion kiln 1. Then, the igniter 5 is started to ignite the gas, so that the combustion kiln 1 can generate high temperature to heat the calciner 3, ensuring that the calciner 3 can calcine the product. Then, the feeder 2 is started to pour the material into the interior of the calciner 3, so that the calciner 3 can calcine the product, and the production raw materials can produce products in the calciner 3;

[0031] At the same time, by arranging the cylinder 61 inside the calcining furnace 3, the cylinder 61 can isolate the product above the cylinder 61 and the feed pipe 62, so that the production raw materials can be calcined above the cylinder 61 and the feed pipe 62, and the cylinder 61 is matched to isolate the calcining furnace 3 arranged below, so that the hot gas can play a role of heat storage at the bottom of the calcining furnace 3, ensuring that the subsequent hot gas can play a role of subsequent calcination of the product, and then the servo motor 662 is started to drive the transmission gear 663 to rotate, so that the transmission gear 663 and the driven gear 664 are meshed and transmitted, and the driven gear 664 drives the transmission frame 665 to swing, so that the transmission frame 665 can move with the guide hopper 666, and the guide hopper 666 pulls the slider 65 to move The slider 65 is pushed by the starter 66, so that the slider 65 can, with the cooperation of the limiting spring 64, lower the material in the feed pipe 62 into the calcining furnace 3 for multiple calcinations, thereby achieving the goal of guiding the production raw materials to flow inside the calcining furnace 3 through the material guiding device 6, so that the production raw materials can be fully burned and calcined inside the calcining furnace 3, effectively improving the extraction efficiency of the production raw materials, thereby solving the problem that the calcining furnace cannot be preheated in the original equipment. When a large amount of production raw materials falls into the calcining furnace, the calcining furnace needs to consume more heat in the process of increasing its own heat, which leads to the problem of low heat utilization rate of the calcining furnace in the process of calcining limestone.

[0032] The control method of the present invention is to control by manually starting and closing the switch. The wiring diagram of the power element and the provision of power supply are common knowledge in the field, and the present invention is mainly used to protect mechanical devices, so the present invention will not explain the control method and wiring arrangement in detail.

[0033] The control method of the present invention is automatic control through a controller. The control circuit of the controller can be realized by simple programming by technicians in this field. The provision of power is also common knowledge in this field. The present invention is mainly used to protect mechanical devices, so the present invention will no longer explain the control method and circuit connection in detail.

[0034] The above are only preferred examples of the present invention and are not intended to limit the present invention. Although the present invention is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A double-chamber parallel flow regenerative lime shaft kiln, comprising a combustion kiln (1), a feeder (2), a calcining furnace (3), a smoke exhaust pipe (4), an igniter (5), a material guide device (6), a gas pipe (7), and a mounting seat (8), wherein the combustion kiln (1) is fixed to the lower end of the interior of the mounting seat (8), the feeder (2) is installed at the right end of the combustion kiln (1), the calcining furnace (3) is fixed to the interior of the combustion kiln (1), the smoke exhaust pipe (4) is arranged at the top of the combustion kiln (1), the igniter (5) is installed at the front end of the combustion kiln (1), the material guide device (6) is fixed to the interior of the calcining furnace (3), and the gas pipe (7) is arranged at the left end of the combustion kiln (1); Features: The material guiding device (6) comprises a cylinder (61), a feed pipe (62), a limiting pin (63), a limiting spring (64), a slider (65), and a pusher (66). The top of the cylinder (61) is provided with a feed pipe (62). The cylinder (61) is fixed to the inside of the calcining furnace (3). The cylinder (61) is fixed to the front end of the combustion kiln (1). The limiting pin (63) is provided inside the feed pipe (62). The limiting pin (63) is fitted in the inside of the limiting spring (64). The limiting spring (64) is fixed to the inside of the feed pipe (62). The slider (65) is provided at the right end of the limiting spring (64). The slider (65) is slidably connected to the bottom of the cylinder (61). The pusher (66) is installed inside the cylinder (61). The pusher (66) is transmission-matched with the bottom of the slider (65).

2. A double-chamber parallel flow regenerative lime shaft kiln according to claim 1, characterized in that: The pusher (66) comprises a housing (661), a servo motor (662), a transmission gear (663), a driven gear (664), a transmission frame (665), and a guide hopper (666). The front end of the housing (661) is equipped with a servo motor (662). The servo motor (662) adopts a coupling and an internal interlocking transmission with the transmission gear (663). The transmission gear (663) is meshed with the outer side of the driven gear (664) for transmission. The driven gear (664) is rotationally connected to the inside of the housing (661). The driven gear (664) is internally interlocked with the transmission frame (665) for transmission. The transmission frame (665) is transmission-connected to the top of the guide hopper (666). The guide hopper (666) is transmission-matched with the bottom of the slider (65).

3. A double-chamber parallel flow regenerative lime shaft kiln according to claim 1, characterized in that: The cylinder (61) is symmetrically arranged inside the cylinder (61).

4. A double-chamber parallel flow regenerative lime shaft kiln according to claim 1, characterized in that: The limiting pin (63) and the limiting spring (64) are arranged inside the cylinder (61) at the same level.

5. The double-chamber parallel flow regenerative lime shaft kiln according to claim 1, characterized in that: The bottom of the cylinder (61) is a hollow structure.

6. A double-chamber parallel flow regenerative lime shaft kiln according to claim 2, characterized in that: The transmission gear (663) is meshed with the outer sides of the two sets of driven gears (664) for transmission.

7. A double-chamber parallel flow regenerative lime shaft kiln according to claim 2, characterized in that: The driven gears (664) are symmetrically arranged at the bottom of the transmission gear (663), so as to ensure that the two sets of driven gears (664) can be driven by the transmission gear (663) to cause the driven gears (664) to rotate in opposite directions.

8. The double-chamber parallel flow regenerative lime shaft kiln according to claim 2, characterized in that: A transmission frame (665) is installed at the bottom of each driven gear (664).

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