Dry desulfurization tower ash discharge device and stirrer thereof

Abstract

The utility model relates to a stirrer for ash discharge of a dry desulfurization tower, which belongs to the technical field of desulfurization equipment and comprises a stirring shaft, a motor, blades and a base, the motor is vertically arranged so that the upper end of the motor is an output end, the output end of the motor is in transmission connection with the stirring shaft, the blades are arranged on the stirring shaft in a surrounding manner, and the base is arranged at the lower end of the motor; the base comprises a base body, rolling wheels are arranged at the four corners of the base body respectively, the edge of the upper end of the base body extends outwards to form a guide plate, the guide plate is in a horn shape, and the upper end of the base body is concave downwards to form a containing groove used for containing the motor. The ash discharging device provided with the stirrer is high in ash discharging efficiency.

Description

Technical Field

[0001] The utility model relates to an ash discharging device and an agitator, in particular to an ash discharging device of a dry desulfurization tower and an agitator thereof, belonging to the technical field of desulfurization equipment. Background Art

[0002] Flue gas desulfurization technology, also known as double alkali flue gas desulfurization technology, was developed to overcome the shortcoming of limestone-lime method that is easy to scale. There are dozens of types. According to whether water is added in the desulfurization process and the dry and wet forms of the desulfurization products, flue gas desulfurization is divided into three major desulfurization processes: wet process, semi-dry process and dry process. Among them, dry desulfurization is also called dry flue gas desulfurization, which refers to the use of powdered or granular absorbents, adsorbents or catalysts to remove sulfide-containing gases from flue gas.

[0003] The dry desulfurization process is simple, there is no sewage or acid treatment problem, and the energy consumption is low. In particular, the flue gas temperature after purification is relatively high, which is conducive to the diffusion of chimney exhaust and will not produce the "white smoke" phenomenon. The purified flue gas does not require secondary heating and has low corrosiveness. Therefore, dry desulfurization is increasingly used.

[0004] The desulfurization tower of dry desulfurization is shut down for desulfurization and denitrification, or the main exhaust damper at the front end causes insufficient air volume, and the desulfurization ash falls to the bottom of the tower, causing the air volume to be blocked. The current of the induced draft fan increases, and the power consumption increases, and the energy conservation and emission reduction standards cannot be met. At the same time, more and more ash accumulates, and the blowing force is insufficient, so the ash cannot be discharged well.

[0005] Therefore, developing a dry desulfurization tower ash discharge device and agitator thereof that can overcome the above defects has become a technical problem that needs to be urgently solved by technical personnel in this field. Utility Model Content

[0006] The technical problem to be solved by the utility model is to overcome the shortcomings of the prior art and provide a dry desulfurization tower ash discharging device and its agitator. The agitator has a simple structure, is easy to use, and has strong applicability. The ash discharging device has high ash discharging efficiency after the agitator is installed.

[0007] In order to solve the above technical problems, the utility model provides a stirrer for ash discharge of a dry desulfurization tower, comprising a stirring shaft, a motor, blades and a base, wherein the motor is vertically arranged so that the upper end of the motor is an output end, the output end of the motor is transmission-connected with the stirring shaft, a plurality of blades are arranged around the stirring shaft, and a base is arranged at the lower end of the motor;

[0008] The base includes a base body, and rollers are respectively arranged at the four corners of the base body. The upper edge of the base body extends outward to form a guide plate, and the guide plate is horn-shaped. The upper end of the base body is concave downward to form a placement groove for placing the motor.

[0009] The technical solution further defined in the utility model is:

[0010] Furthermore, in the aforementioned dry desulfurization tower ash discharge agitator, the rollers include a pair of universal wheels and a pair of directional wheels, the directional wheels are arranged at the front end of the base body according to the walking direction, and the universal wheels are arranged at the rear end of the base body.

[0011] Technical effect: the universal wheel is equipped with brakes, which is convenient for braking after determining the position, stabilizing the entire base and facilitating mixing work. The combination of universal wheels and fixed wheels is convenient for walking and turning, has good adjustability, and is also convenient for moving the entire mixer, saving time and effort.

[0012] In the aforementioned dry desulfurization tower ash discharge agitator, a push rod is provided on one side of the base body, and the push rod is arranged horizontally.

[0013] Technical effect: the utility model provides a push rod on one side of the base to facilitate moving the base to the bottom of the tower and docking the motor with the base, which is convenient for the operation of the staff and saves time and effort.

[0014] In the aforementioned dry desulfurization tower ash discharge agitator, a rubber pad is placed in the tank.

[0015] Technical effect: placing rubber pads reduces direct friction between the motor and the placement slot, increases resistance, and facilitates maintaining stability.

[0016] In the aforementioned dry desulfurization tower ash discharge agitator, two lifting ears are symmetrically provided on the outer periphery of the motor.

[0017] The technical effect is that the motor is easy to move, and the lifting ears are used to facilitate force when moving, making it more convenient to use.

[0018] In the aforementioned dry desulfurization tower ash discharge agitator, the blades are soft blades.

[0019] Technical effect: The utility model adopts soft blades, which is convenient for the use of the desulfurization tower at the conical lower end, and facilitates the smooth insertion of the soft blades of the agitator from the manhole. When starting, the blades are opened for blowing, ensuring that the blade size is sufficient and the blowing force is strong. If it is a hard blade, the blade size cannot exceed the manhole, otherwise it cannot be inserted. If the size is too small, the wind force is insufficient, the blowing force on the accumulated dust becomes smaller, and the efficiency of ash discharge cannot be guaranteed.

[0020] In the aforementioned dry desulfurization tower ash discharge agitator, two blades are symmetrically provided at the top of the agitator shaft.

[0021] The present invention also designs a dry desulfurization tower ash discharge device, including a desulfurization tower body. The bottom of the desulfurization tower body is provided with a blowing device and the above-mentioned agitator. One end of the agitator extends into the desulfurization tower body through a manhole at the bottom of the desulfurization tower body to stir and blow ash, and the other end is set on the ground.

[0022] The beneficial effects of the utility model are:

[0023] The agitator of the utility model is movably arranged at the bottom of the tower. Compared with a fixed agitator, it is more convenient to use and can be used according to selection. The agitator is used at the ash manhole at the bottom of the tower. The manhole is opened to put the ash into the ash accumulation at the bottom of the tower, and the power is turned on to stir it by itself. The negative pressure in the tower is used to help blow away the accumulated ash, thereby ensuring that the accumulated ash at the bottom of the tower is effectively cleaned. Moreover, the agitator is movable and detachable, and assists in ash discharge, so that the accumulated ash at the bottom of the tower can be cleaned, thereby reducing safety hazards and manual cleaning work and improving work efficiency.

[0024] The utility model has soft blades and can be used for different flue widths, has strong adaptability, and the agitator is movable, so the agitator can be used or not as needed, has strong adaptability, and effectively solves the problem that the blowing device cannot blow when there is too much ash accumulation. The agitator assists in processing the ash accumulation, thereby effectively improving the ash discharge effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the structure of the agitator for ash discharge of the dry desulfurization tower according to the embodiment of the utility model;

[0026] Figure 2 for Figure 1 Schematic diagram of the structure of the middle base;

[0027] Figure 3 This is a schematic structural diagram of a dry desulfurization tower ash discharge device according to an embodiment of the utility model;

[0028] In the figure: 1- agitator shaft, 2- motor, 21- ear, 3- blade, 4- base, 41- base body, 42- guide plate, 43- placement groove, 44- universal wheel, 45- directional wheel, 5- push rod, 6- desulfurization tower body. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them; the technical features involved in the various implementation methods of the utility model described below can be combined with each other as long as they do not conflict with each other. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Example 1

[0030] This embodiment provides a dry desulfurization tower ash discharge agitator, the structure of which is as follows Figure 1-3As shown, it includes a stirring shaft 1, a motor 2, blades 3 and a base 4. The motor 2 is vertically arranged so that the upper end of the motor 2 is an output end, and the output end of the motor 2 is transmission-connected to the stirring shaft 1. Two blades 3 are symmetrically arranged on the top of the stirring shaft 1. The blades can be fixed on the stirring shaft 2 by existing technology, such as by bonding. The lower end of the motor 2 is provided with a base 4, and two hanging ears 21 are symmetrically arranged on the outer periphery of the motor 2.

[0031] The blades are soft blades such as blades made of rubber material;

[0032] The base 4 includes a base body 41, and rollers are respectively provided at the four corners of the base body 41. The rollers include a pair of universal wheels 44 with brakes and a pair of directional wheels 45. The directional wheels 45 are arranged at the front end of the base body 41 according to the walking direction, and the universal wheels 44 are arranged at the rear end of the base body 41. The upper end edge of the base body 41 extends outward to form a guide plate 42, and the guide plate 42 is horn-shaped. The upper end of the base body 41 is concave downward to form a placement groove 43 for placing the motor 2. A rubber pad is arranged in the placement groove 43. A push rod 5 is provided on one side of the base body 41, and the push rod 5 is arranged horizontally.

[0033] The present embodiment also provides a dry desulfurization tower ash discharge device, including a desulfurization tower body 6. The bottom of the desulfurization tower body 6 is provided with an air blowing device and the above-mentioned agitator. One end of the agitator extends into the desulfurization tower body 6 through a manhole at the bottom of the desulfurization tower body 6 to stir and blow ash, and the other end is set on the ground.

[0034] During the specific implementation, the motor together with the 6-meter stirring shaft and blades are extended into the bottom of the desulfurization tower body 6 through the manhole, the base 4 is pushed to the bottom of the motor 2 through 5, and the motor 2 is guided by the guide plate 42 on the wall of the base body 4 and placed in the placement groove 43 for fixing, and then the universal wheel is braked, and the blowing device in the desulfurization tower body 6 is opened for use. The blowing device adopts the reverse blowing device in the prior art, and the compressed air source and the blowing pipe are used to blow the accumulated dust. The agitator is also started and stirred at the bottom of the tower. Due to the negative pressure, the accumulated dust will not fall after the manhole is opened, and the negative pressure in the tower is used to help the accumulated dust blown by the agitator to be blown away, so as to ensure that the accumulated dust inside the bottom of the tower is effectively cleaned.

[0035] In addition to the above embodiments, the present invention may also have other implementations. Any technical solution formed by equivalent replacement or equivalent transformation falls within the protection scope required by the present invention.

Claims

1. A stirrer for ash discharge in a dry desulfurization tower, characterized in that: The stirring shaft (1) comprises a stirring shaft (1), a motor (2), blades (3) and a base (4), wherein the motor (2) is arranged vertically so that the upper end of the motor (2) is an output end, the output end of the motor (2) is drivingly connected to the stirring shaft (1), a plurality of blades (3) are arranged around the stirring shaft (1), and the base (4) is arranged at the lower end of the motor (2); The base (4) comprises a base body (41), four corners of the base body (41) are respectively provided with rollers, the upper edge of the base body (41) extends outwards to form a guide plate (42), the guide plate (42) is horn-shaped, and the upper end of the base body (41) is concave downwards to form a placement groove (43) for placing the motor (2).

2. The agitator for ash discharge of dry desulfurization tower according to claim 1, characterized in that: The rollers include a pair of universal wheels (44) and a pair of fixed wheels (45); the fixed wheels (45) are arranged at the front end of the base body (41) in the walking direction, and the universal wheels (44) are arranged at the rear end of the base body (41).

3. The agitator for ash discharge of dry desulfurization tower according to claim 1, characterized in that: A push rod (5) is provided on one side of the base body (41), and the push rod (5) is arranged horizontally.

4. The agitator for ash discharge of a dry desulfurization tower according to claim 1, characterized in that: A rubber pad is provided in the placement groove (43).

5. The agitator for ash discharge of dry desulfurization tower according to claim 1, characterized in that: Two lifting ears (21) are symmetrically arranged on the outer circumference of the motor (2).

6. The agitator for ash discharge of dry desulfurization tower according to claim 1, characterized in that: The blades (3) are soft blades.

7. The agitator for ash discharge of a dry desulfurization tower according to claim 1, characterized in that: Two blades (3) are symmetrically arranged at the top end of the stirring shaft (1).

8. A dry desulfurization tower ash discharge device, characterized in that: The invention comprises a desulfurization tower body (6), wherein the bottom of the desulfurization tower body (6) is provided with an air blowing device and the agitator according to any one of claims 1 to 7, one end of the agitator extends into the desulfurization tower body (6) through a manhole at the bottom of the desulfurization tower body (6) to stir and blow soot, and the other end is arranged on the ground.

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