CN210154307U - Stable blanking device for large rotary kiln - Google Patents

Abstract

The utility model discloses a stabilize unloader for large-scale rotary kiln aims at solving the unstable problem of unloader's of current large-scale rotary kiln unloading volume. The stable discharging device for the large rotary kiln comprises a discharging buffer bin, a scattering rotating shaft and a driving device, wherein the scattering rotating shaft is rotatably arranged at the lower part of the discharging buffer bin; one part of the shaft section of the scattering rotating shaft penetrates into the blanking buffer bin, and scattering braks are arranged on the shaft section of the scattering rotating shaft in the blanking buffer bin. Utilize this stable unloader to carry out the in-process of unloading to large-scale rotary kiln, break up the pivot through the drive arrangement drive and rotate, break up in the pivot along with its rotatory break up brag nail can break up a large amount of materials that stick together, avoided the bottom of unloading buffering feed bin to appear unloading hanging material, collapse the material phenomenon such as collapsing, the unloading volume fluctuation is little, has guaranteed the continuity, the homogeneity and the stability of unloading.

Description

Stable blanking device for large rotary kiln

Technical Field

The utility model relates to a unloader, especially a stabilize unloader for large-scale rotary kiln.

Background

The rotary kiln requires continuous, uniform and stable blanking amount in the production process, and if the rotary kiln does not meet the production requirements of the process, the production is severely restricted, and the product loss is caused. At present, a large rotary kiln with the blanking amount of more than 20 tons/hour still adopts a mode that a common stock bin utilizes the gravity of materials and is controlled by a blanking valve to carry out blanking. Although the rotary kiln has the advantages of simple structure, convenience in operation, low manufacturing cost and the like, the blanking amount of a large rotary kiln is unstable due to the characteristics of large blanking amount in unit time, sticky logistics and the like, the phenomena of emptying and suspending of the bottom, material collapse and the like often occur, the blanking amount fluctuates by 10-32 t/h in a short time, the blanking amount fluctuates greatly and frequently, and further the materials in the rotary kiln are sintered in large and small time, so that the sintering temperature qualification rate and the roasting conversion rate of the rotary kiln are seriously influenced.

SUMMERY OF THE UTILITY MODEL

The utility model provides a stable unloader for large-scale rotary kiln aims at solving the unstable problem of unloader's of current large-scale rotary kiln unloading volume.

The utility model provides a technical scheme that its technical problem adopted is: the stable blanking device for the large rotary kiln comprises a blanking buffer bin, a scattering rotating shaft and a driving device, wherein the scattering rotating shaft is rotatably arranged at the lower part of the blanking buffer bin; one part of the shaft section of the scattering rotating shaft penetrates into the blanking buffer bin, and scattering braks are arranged on the shaft section of the scattering rotating shaft in the blanking buffer bin.

Furthermore, the upper part of the blanking buffer bin is in a square cone shape, and the lower part of the blanking buffer bin is in a cone shape.

Further, the lower part of unloading buffering feed bin is provided with two pivot tip shells, break up the both ends of pivot and rotationally set up respectively in two pivot tip shells through the bearing.

Furthermore, the axis of the scattering rotating shaft and the center line of the blanking buffer bin are in the same plane.

Furthermore, the scattering harrow nails are divided into at least two harrow nail groups, and each harrow nail group comprises at least two scattering harrow nails which are distributed at intervals along the axial direction of the scattering rotating shaft.

Further, the broken rake nails in two adjacent rake nail groups are staggered with each other.

Further, the driving device is a variable frequency motor.

The utility model has the advantages that: this stabilize unloader through rotationally set up the area in the lower part of unloading buffering feed bin and break up the pivot of breaing up of harrow nail, utilize it to carry out the in-process of unloading to large-scale rotary kiln, break up the pivot through the drive arrangement drive and rotate, break up in the pivot and can break up a large amount of materials that stick together along with its rotatory harrow nail of breaing up, the bottom of having avoided unloading buffering feed bin is appeared and is emptied the hanging material, collapse the material and break down phenomenons such as material, the unloading fluctuation is little, the continuity of unloading has been guaranteed, homogeneity and stability, do benefit to and improve rotary kiln calcination temperature qualification rate and calcination transformation rate, economic benefits is showing.

Drawings

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

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a schematic side view of the scattering shaft according to the present invention;

labeled as: a blanking buffer bin 100, a rotating shaft end part shell 110, a scattering rotating shaft 200 and a scattering harrow nail 210.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

Referring to fig. 1 and 2, the stable feeding device for a large rotary kiln includes a feeding buffer bin 100, a scattering rotating shaft 200 rotatably disposed at a lower portion of the feeding buffer bin 100, and a driving device in transmission connection with the scattering rotating shaft 200; a part of the shaft section of the scattering rotating shaft 200 penetrates into the blanking buffer bin 100, and the scattering harrow nails 210 are arranged on the shaft section of the scattering rotating shaft 200 in the blanking buffer bin 100.

Utilize this to stabilize unloader to carry out the in-process of unloading to large-scale rotary kiln, the material gets into this unloader from the feed inlet at unloading buffer bin 100 top, and receive self action of gravity whereabouts, break up pivot 200 through the drive arrangement drive simultaneously and rotate, break up and break up brad nail 210 along with its rotation on the pivot 200 and can break up a large amount of materials that stick together, the bottom of having avoided unloading buffer bin 100 appears the emptying and hangs the material, collapse the material and collapse phenomenons such as material, the continuity of unloading, homogeneity and stability have been guaranteed.

Wherein, unloading buffer feed bin 100 is the main part of the device, and its structure can be many, for example: conical, square conical, etc., preferably having a structure in which the upper part is square conical and the lower part is conical; a general blanking buffer bin 100 with the upper part and the lower part both being 3m in height; a control valve is usually arranged at the discharge outlet at the bottom of the blanking buffer silo 100.

Break up pivot 200 and penetrate the pivot in unloading buffer bin 100 for some shaft segments, it can be multiple in unloading buffer bin 100 lower part rotationally the mode of setting up, for example: the blanking buffer bin 100 is arranged in a clearance fit manner with a hole on the blanking buffer bin 100, is arranged in a fit manner with the blanking buffer bin 100 through a shaft sleeve, is arranged in a fit manner with the blanking buffer bin 100 through a bearing, and the like; for a large rotary kiln, a scattering rotating shaft 200 with the diameter of 0.3m and the length of 2.7m is generally selected, a scattering harrow nail 210 with the length of 0.05m is selected, and the scattering rotating shaft 200 is installed at a position 1.5m above a discharge port of a blanking buffer bin 100 during installation; preferably, as shown in fig. 1, two rotating shaft end housings 110 are disposed at a lower portion of the blanking buffer bin 100, and two ends of the scattering rotating shaft 200 are rotatably disposed in the two rotating shaft end housings 110 through bearings, respectively. The rotating shaft end part shell 110 can protect the end part of the scattering rotating shaft 200 and is beneficial to the rotating matching installation of the scattering rotating shaft 200 and the blanking buffering bin 100.

In order to ensure that the scattering harrow teeth 210 on the scattering rotating shaft 200 effectively scatter a large amount of materials stuck together, as shown in fig. 2, the axial line of the scattering rotating shaft 200 and the central line of the blanking buffer bin 100 are in the same plane. That is, the scattering rotating shaft 200 is disposed to penetrate through the center line of the blanking buffer bin 100, so that the contact surface between the scattering rotating shaft 200 and the falling material can be effectively increased.

In order to further improve the effect of scattering materials, as shown in fig. 2 and 3, the scattering spikes 210 are divided into at least two groups of spikes, and each group of spikes includes at least two scattering spikes 210 spaced apart from each other along the axial direction of the scattering rotating shaft 200.

On the basis of the above, in order to improve the uniformity of the scattering material, it is preferable that the scattering spikes 210 in two adjacent rake groups are offset from each other.

The driving device is used for driving the breaking spindle 200 to rotate, and may be various, for example: a rotary cylinder, a motor, a diesel engine, etc., preferably a variable frequency motor. Utilize inverter motor can effectively adjust the driving speed, practice thrift the energy consumption when guaranteeing stable unloading.

Claims (7)

1. A stabilize unloader for large-scale rotary kiln, including unloading buffering feed bin (100), its characterized in that: the blanking buffer bin also comprises a scattering rotating shaft (200) which is rotatably arranged at the lower part of the blanking buffer bin (100) and a driving device which is in transmission connection with the scattering rotating shaft (200); one part of the shaft section of the scattering rotating shaft (200) penetrates into the blanking buffer bin (100), and scattering brakes nails (210) are arranged on the shaft section of the scattering rotating shaft (200) in the blanking buffer bin (100).

2. A stable blanking device for a large rotary kiln as defined in claim 1, wherein: the upper part of the blanking buffer bin (100) is in a square conical shape, and the lower part of the blanking buffer bin is in a conical shape.

3. A stable blanking device for a large rotary kiln as defined in claim 1, wherein: the lower part of unloading buffering feed bin (100) is provided with two pivot tip shells (110), break up the both ends of pivot (200) and rotationally set up respectively in two pivot tip shells (110) through the bearing.

4. A stable blanking device for a large rotary kiln as defined in claim 1, wherein: the axial lead of the scattering rotating shaft (200) and the central line of the blanking buffer bin (100) are in the same plane.

5. A stable blanking device for a large rotary kiln as defined in claim 1, 2, 3 or 4, wherein: the scattering harrow nails (210) are divided into at least two harrow nail groups, and each harrow nail group comprises at least two scattering harrow nails (210) which are distributed at intervals along the axial direction of the scattering rotating shaft (200).

6. A stable blanking device for a large rotary kiln as defined in claim 5, wherein: the broken rake nails (210) in two adjacent rake nail groups are staggered with each other.

7. A stable blanking device for a large rotary kiln as defined in claim 5, wherein: the driving device is a variable frequency motor.

Images