CN223234394U - A self-cleaning sawdust separator - Google Patents

Abstract

The utility model discloses a self-cleaning wood chip separator, comprising a separator body, a motor drive module and a screen, and also comprising a speed sensing module and an air purge module. The separator body is provided with a feed pipe and a discharge pipe, the motor drive module drives the screen to separate coal powder and impurities and outputs coal powder that meets the requirements through the discharge pipe; a speed monitoring sensor provided by the speed sensing module senses the speed change of the screen in real time, and promptly feeds back information on heaping and false blocking; the air purge module receives the speed information output by the speed sensing module and outputs compressed gas to the surface of the screen to clean up coal powder or debris that blocks the screen holes, thereby reducing accident response time, having a high degree of automation, avoiding excessive manual intervention, extending the service life of the equipment, and effectively avoiding the phenomena of heaping and false blocking that occur when the amount of unloading fluctuates or the screen is blocked.

Description

Self-cleaning type wood chip separator

Technical Field

The utility model relates to the technical field of blast furnace pulverized coal injection filtration, in particular to a self-cleaning type wood chip separator.

Background

At present, 85% -90% of pig iron in the world is smelted on a blast furnace adopting injection of supplementary fuel, and based on the rich resource endowment of coal reserves in China, injection of coal dust becomes the optimal choice of most blast furnaces in China. In the preparation process of the pulverized coal, other fibrous impurities such as wood dust which cannot be crushed by a mill are extremely easy to block a pipeline when being pneumatically fluidized and conveyed to a blast furnace system, so that the smooth running of the blast furnace is influenced.

At present, the installation of a wood dust separating device in the processes of coal dust collection, storage and blowing is an effective means for improving the coal dust conveying stability. However, during the coal dust collection and blowing, the high-speed moving coal dust flow accelerates the abrasion of the filter screen, and it is very difficult to replace the filter screen. Therefore, the installation of the wood dust separating device in the low-speed pipeline between the coal dust bin and the upper and lower structures of the blowing tank is a main means of current coal dust screening. According to different sources of power, the wood chip separator can be divided into a dead weight wood chip separator, a pneumatic wood chip separator and an electric wood chip separator, and the electric wood chip separator is widely adopted due to high degree of automation and high stability. However, when the blanking amount fluctuates or the screen cloth is blocked, the electric wood dust separator is extremely easy to produce stacking and false blocking, the times of shutdown maintenance are increased, and the service life of the motor is seriously influenced. Therefore, it is necessary to design a new type of chip separator to address the above-mentioned drawbacks and shortcomings.

The national patent of utility model (publication number: CN 201669167U) discloses an electric wood chip separator, which comprises a separating device, wherein a mechanical driving device is connected to a rotating shaft of the separating device. The mechanical driving device comprises a motor, wherein an output shaft of the motor is connected with a speed reducer, the output shaft of the speed reducer is connected with a rotating shaft of the separating device through a sprocket transmission device, the sprocket transmission device comprises a driving wheel fixed on the output shaft of the speed reducer and a driven wheel fixed on the rotating shaft of the separating device, and the driving wheel is connected with the driven wheel through a chain. The utility model adopts the motor forced driving technology, ensures that the separation device of the wood dust separator rotates at a fixed speed, ensures the uniform rotation of the separation device, reduces the inflexible rotation of the separation device, and achieves the aim of separating light impurities in coal dust. However, the technical proposal does not overcome the production stoppage and maintenance accidents caused by stacking and false blocking, which definitely shortens the service life of the equipment and increases the labor cost.

Disclosure of utility model

In order to solve the problems in the background technology, the utility model provides a self-cleaning wood chip separator which has the characteristics of high automation degree, strong self-adaptation capability, simple structure and the like, can effectively identify and prevent the problems of stacking and false blocking, and avoids motor stalling accidents.

In order to achieve the above purpose, the technical scheme provided by the utility model is as follows:

The self-cleaning type wood dust separator comprises a separator body, a motor driving module, a screen, a rotating speed sensing module and a gas purging module, wherein the separator body is provided with a feeding pipe and a discharging pipe, the motor driving module drives the screen, the screen separates coal dust and impurities and outputs the coal dust meeting requirements through the discharging pipe, and the gas purging module receives the rotating speed information output by the rotating speed sensing module and outputs compressed gas on the surface of the screen.

As a further improvement of the utility model, the rotation speed sensing module comprises a rotation speed monitoring sensor and a monitoring baffle, wherein the monitoring baffle is connected with a belt pulley, and the belt pulley is connected with the screen through a power shaft.

Preferably, the gas purge module comprises an upper purge line and a lower purge line, the upper purge line comprises an upper air inlet pipe, an upper purge ring pipe and an upper purge nozzle, the lower purge line comprises a lower air inlet pipe, a lower purge ring pipe and a lower purge nozzle, and the upper purge line and the lower purge line are connected with the shell.

Preferably, the upper purge nozzle and the lower purge nozzle are arranged at one side of the screen, the upper purge nozzle outputs compressed gas to the upper surface of the screen, and the lower purge nozzle outputs compressed gas to the lower surface of the screen.

Preferably, the lower purge nozzle is provided with a pulse valve set.

The utility model has the beneficial effects that:

compared with the prior art, the technical scheme provided by the utility model has the following beneficial effects:

1. According to the self-cleaning type sawdust separator, the monitoring baffle is connected with the belt pulley, and the belt pulley is connected with the screen through the power shaft, so that the rotating speed monitoring sensor can sense the speed change of the screen in real time, and timely feedback the stacking and false blocking information.

2. The air purging module of the utility model rapidly reacts after receiving the stacking and false blocking information, outputs compressed air on the upper and lower surfaces of the screen, and cleans coal dust or miscellaneous scraps blocking the screen holes so as to enable the screen to recover normal operation. The air purging module is simple in structure and high in automation degree, and manual excessive intervention is avoided.

3. The overload times and time of the driving motor are reduced, so that the reliability of the equipment is improved, the service life is prolonged, and the times of production stoppage and maintenance are reduced.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a schematic diagram of a gas purge module according to the present utility model;

FIG. 3 is a schematic diagram of a rotation sensing module according to the present utility model;

FIG. 4 is a schematic cross-sectional view of the present utility model;

In the figure, 1, a separator body, 11, a feed pipe, 12, a discharge pipe, 13, a shell, 2, a motor driving module, 21, a belt pulley, 22, a power shaft, 3, a rotation speed sensing module, 31, a rotation speed monitoring sensor, 32, a monitoring baffle plate, 4, a gas purging module, 41, an upper purging pipeline, 411, an upper air inlet pipe, 412, an upper purging ring pipe, 413, an upper purging nozzle, 42, a lower purging pipeline, 421, a lower air inlet pipe, 422, a lower purging ring pipe, 423, a lower purging nozzle, 5 and a screen.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, unless explicitly stated or limited otherwise, the terms "provided with," "connected to," and the like are to be construed broadly, as for example, "connected" may be fixedly connected, detachably connected, or integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected via an intervening medium, or in communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Referring to fig. 1 to 4, the utility model provides an embodiment of a self-cleaning wood chip separator, which comprises a separator body 1, a motor driving module 2, a screen 5, a rotating speed sensing module 3 and a gas purging module 4, wherein the separator body 1 is provided with a feeding pipe 11 and a discharging pipe 12. The pulverized coal enters the separator body 1 from the feed pipe 11, is rotationally screened by the screen 5 driven by the motor driving module 2, and is output to meet the requirements through the discharge pipe 12.

Specifically, in this embodiment, the rotation speed sensing module 3 is provided with a rotation speed monitoring sensor 31 and a monitoring baffle 32, the monitoring baffle 32 is connected with a pulley 21, and the pulley 21 is connected with the screen 5 through a power shaft 22. When the discharging amount fluctuates or the screen 5 is blocked, the drop of the rotating speed of the screen 5 is reflected in real time as the drop of the frequency of the monitoring baffle 32 passing through the rotating speed monitoring sensor 31, and the rotating speed monitoring sensor 31 timely feeds back the stacking and false blocking information to the control center.

Also, the gas purge module 4 includes an upper purge line 41 and a lower purge line 42, the upper purge line 41 includes an upper intake pipe 411, an upper purge collar 412, and an upper purge nozzle 413, the lower purge line 42 includes a lower intake pipe 421, a lower purge collar 422, and a lower purge nozzle 423, and the upper purge line 41 and the lower purge line 42 are connected with the housing 13. After the air purging module 4 receives stacking and false blocking information provided by the control center, compressed air input through the upper air inlet pipe 411 and the lower air inlet pipe 421 is distributed through the upper purging ring pipe 412 and the lower purging ring pipe 422, and then is respectively blown onto the upper surface and the lower surface of the screen 5 through the upper purging nozzle 413 and the lower purging nozzle 423, pulverized coal or miscellaneous chips blocking the screen holes are cleaned, and purging is stopped after the rotating speed of the screen is recovered to be normal. The system has simple mechanism, reduces manual excessive intervention, improves the automation degree of the system, and reduces maintenance time and times.

In a preferred embodiment, the lower purge nozzle 423 is provided with a pulse valve set, and when the upper purge nozzle 413 performs purging, the lower purge nozzle 423 is sequentially opened, and the probability of blowing up pulverized coal or trash is increased by using the pressurizing effect of the pulse valve.

The utility model and its embodiments have been described above by way of illustration and not limitation, and the utility model is illustrated in the accompanying drawings and described in the drawings in which the actual structure is not limited thereto. Therefore, if one of ordinary skill in the art is informed by this disclosure, the structural mode and the embodiments similar to the technical scheme are not creatively designed without departing from the gist of the present utility model.

Claims (5)

1. A self-cleaning wood chip separator, comprising a separator body (1), a motor drive module (2) and a screen (5), characterized in that it also comprises a speed sensing module (3) and an air purge module (4), wherein the separator body (1) is provided with a feed pipe (11) and a discharge pipe (12), the motor drive module (2) drives the screen (5), the screen (5) separates coal powder from impurities and outputs coal powder that meets the requirements through the discharge pipe (12); the air purge module (4) receives the speed information output by the speed sensing module (3) and outputs compressed gas to the surface of the screen (5). 2. A self-cleaning wood chip separator according to claim 1, characterized in that: the speed sensing module (3) includes a speed monitoring sensor (31) and a monitoring baffle (32), the monitoring baffle (32) is connected to the pulley (21), and the pulley (21) is connected to the screen (5) through a power shaft (22). 3. A self-cleaning wood chip separator according to claim 1, characterized in that: the air purge module (4) includes an upper purge pipeline (41) and a lower purge pipeline (42), the upper purge pipeline (41) includes an upper air inlet pipe (411), an upper purge ring pipe (412) and an upper purge nozzle (413), the lower purge pipeline (42) includes a lower air inlet pipe (421), a lower purge ring pipe (422) and a lower purge nozzle (423), and the upper purge pipeline (41) and the lower purge pipeline (42) are connected to the shell (13). 4. A self-cleaning wood chip separator according to claim 3, characterized in that: the upper purge nozzle (413) and the lower purge nozzle (423) are arranged toward one side of the screen (5), the upper purge nozzle (413) outputs compressed gas on the upper surface of the screen (5), and the lower purge nozzle (423) outputs compressed gas on the lower surface of the screen (5). 5. A self-cleaning wood chip separator according to claim 3 or 4, characterized in that the lower purge nozzle (423) is provided with a pulse valve group.