Fluidization conveying device capable of preventing ultrafine powder from hardening

Abstract

The utility model discloses a fluidization conveying device capable of preventing ultrafine powder from hardening, which comprises a buffer pump, a desulfurizing agent bin is arranged above the buffer pump, and a manual gate valve and a star-shaped discharge valve are arranged on a connecting pipeline of the desulfurizing agent bin and the buffer pump from top to bottom. The buffer pump comprises a deflation pipeline, a positive pressure air inlet pipe, a positive pressure powder outlet pipe, an electric control valve, a buffer pump fluidization base plate and a fluidization air pipeline, the deflation pipeline is located on one side of the top of the buffer pump, the positive pressure air inlet pipe is located in the middle of the buffer pump, the positive pressure powder outlet pipe is located on the top of the buffer pump, and the electric control valve is installed at the outer end of the positive pressure powder outlet pipe. The buffer pump fluidization chassis is installed below the buffer pump through a flange plate, and a fluidization air pipeline is arranged at the bottom of the buffer pump. The utility model solves the problems of pipeline blockage and the like caused by moisture absorption of the desulfurizer.

Description

Technical Field

[0001] The utility model belongs to a fluidized conveying device, in particular to a fluidized conveying device for preventing superfine powder from compacting. Background Art

[0002] At present, calcium-based dry desulfurization technology is the most novel desulfurization technology with development potential for steel rolling heating furnaces and blast furnace hot blast furnaces. Compared with sodium-based dry desulfurization, its structure is simple and its by-products are easy to handle. Calcium-based desulfurizer is expanded ultra-fine slaked lime powder, which is easy to harden when damp. When the positive pressure fan is conveyed, the ejector is connected to the material falling point, and a negative pressure cavity is formed under the falling material. The powder is driven by the high-speed airflow and sprayed forward into the powder spraying flue.

[0003] The utility model patent with the publication number of CN208249174U discloses a screw conveying device for high-efficiency desulfurization agent processing, including a feed pipe, a motor and a feeding hopper, wherein the upper end of the feed pipe is provided with a feed hopper 1, one side of the feed pipe is connected with a feed hopper 2, the lower end of the feed pipe is connected with a cylinder, a piston rod is arranged inside the cylinder, one end of the storage pipe is connected with a spiral feeding pipe, a propeller blade is arranged inside the spiral feeding pipe, the propeller blade is coaxial with the motor, a bearing is arranged at the connection between the motor and the spiral feeding pipe, a valve is arranged above the feeding hopper at the lower end of the spiral feeding pipe, a rack is arranged below the discharge port of the feeding hopper, a gear is meshed below the rack, and a collecting barrel moving with the rack is fixed at the upper end of the rack. Compared with the prior art, the utility model has the advantages of being able to efficiently and evenly convey materials, not only with a large conveying volume and stable transmission, but also capable of automatically collecting the conveyed materials. During the desulfurization agent transportation process, the desulfurizer easily absorbs water and becomes damp, and easily hardens inside the pipeline. Long-term accumulation can easily cause pipeline blockage. Utility Model Content

[0004] The utility model aims to provide a fluidized conveying device for preventing superfine powder from caking, so as to solve the problem of pipeline blockage caused by desulfurization agent absorbing water and becoming damp.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A fluidized conveying device for preventing ultrafine powder from compacting comprises a buffer pump, a desulfurizer bin is arranged above the buffer pump, a manual plug valve and a star-shaped discharge valve are arranged from top to bottom on the pipeline connecting the desulfurizer bin and the buffer pump, the buffer pump comprises an air venting pipeline, a positive pressure air inlet pipe, a positive pressure powder outlet pipe, an electric regulating valve, a fluidized chassis of the buffer pump, and a fluidized air pipeline, the air venting pipeline is located on one side of the top of the buffer pump, the positive pressure air inlet pipe is located in the middle of the buffer pump, the positive pressure powder outlet pipe is located at the top of the buffer pump, the electric regulating valve is installed at the outer end of the positive pressure powder outlet pipe, the fluidized chassis of the buffer pump is installed below the buffer pump through a flange, and a fluidized air pipeline is arranged at the bottom of the buffer pump.

[0007] Preferably, the desulfurizing agent bin is an inverted bucket type structure.

[0008] Preferably, the manual plug valve includes a material control pipe, a discharge plate bracket, a discharge plate, a screw and a rotary wheel. The top of the material control pipe is installed on the bottom of the desulfurizer bin through a flange. A discharge plate bracket is vertically welded to the outer end of the material control pipe. The discharge plate is circular and moves radially along the middle of the material control pipe. A screw is radially installed on the outer end of the discharge plate. The screw is threadedly connected to the discharge plate bracket, and a rotary wheel is fixed to the outer end of the screw.

[0009] Preferably, the star-shaped unloading valve includes a unloading pipe, a star-shaped rotor, and a motor. The top of the unloading pipe is installed with the bottom of the material control pipe through a flange, and the bottom is installed with the top center of the buffer pump through a flange. A star-shaped rotor is installed inside the unloading pipe, and a motor is installed on the outer wall of the unloading pipe, and the output shaft of the motor is connected to the star-shaped rotor.

[0010] Preferably, the positive pressure air inlet pipe is horizontally located, and one end of the positive pressure air inlet pipe is located inside the buffer pump with its opening facing downward.

[0011] Preferably, the positive pressure powder discharge pipe is an inverted U-shaped structure, with one end inside the buffer pump tilted downward and the other end outside vertically facing downward.

[0012] Preferably, the fluidized chassis of the buffer pump includes a lower bottom plate, an upper top plate, a canvas, a connecting hole, and a bottom hole. The upper top plate and the lower bottom plate are of the same size and butted against each other up and down, with a canvas arranged in the middle. The top surface of the upper top plate is hollowed out to reveal a large area of ​​the canvas. The upper top plate and the lower bottom plate are penetrated by connecting holes at the upper and lower outer ends of the circumference for installation with the lower end of the buffer pump, and a plurality of equidistant bottom holes are penetrated through the middle of the lower bottom plate.

[0013] Preferably, the bottom holes are honeycomb-shaped.

[0014] The utility model has the following beneficial effects:

[0015] 1. The fluidized chassis of the buffer pump of the utility model can evenly supply gas to the buffer pump through the fluidized air pipeline, which can loosen the falling desulfurizer powder, fully fluidize it, increase the fluidity of the desulfurizer powder, and avoid the desulfurizer powder from accumulating into blocks and hardening, which will cause pipeline blockage and other consequences;

[0016] 2. Through the dual regulation control of the star-shaped discharge valve and the electric regulating valve, the proportional regulation of the desulfurizer powder feeding amount is more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is the front view of the utility model;

[0018] Figure 2 It is a partial cross-sectional view of the buffer pump of the utility model;

[0019] Figure 3 This is a schematic diagram of the appearance structure of the manual plug-in valve of the utility model;

[0020] Figure 4 This is a schematic diagram of the appearance structure of the star-shaped discharge valve of the utility model;

[0021] Figure 5 This is a schematic diagram of the structure of the fluidized chassis of the buffer pump of the utility model;

[0022] Figure 6 This is a schematic diagram of the bottom hole structure of the utility model;

[0023] Icons: 1. Buffer pump; 2. Desulfurizer bin; 3. Manual plug valve; 31. Material control pipe; 32. Discharge plate bracket; 33. Discharge plate; 34. Screw; 35. Rotor; 4. Star-shaped discharge valve; 41. Discharge pipe; 42. Star-shaped rotor; 43. Motor; 5. Vent pipeline; 6. Positive pressure air inlet pipe; 7. Positive pressure powder outlet pipe; 8. Electric regulating valve; 9. Buffer pump fluidized chassis; 91. Lower bottom plate; 92. Upper top plate; 93. Canvas; 94. Connecting hole; 95. Bottom hole; 10. Fluidized air duct. DETAILED DESCRIPTION

[0024] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0025] In the description of the present invention, unless otherwise specified, "multiple" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] like Figure 1-6 As shown, in this embodiment, a fluidized conveying device for preventing ultrafine powder from hardening includes a buffer pump 1, a desulfurizer bin 2 is arranged above the buffer pump 1, and the desulfurizer bin 2 is a bucket-shaped structure. A manual gate valve 3 and a star-shaped discharge valve 4 are arranged from top to bottom on the pipeline connecting the desulfurizer bin 2 and the buffer pump 1. The manual gate valve 3 includes a control pipe 31, a discharge plate bracket 32, a discharge plate 33, a screw 34, and a rotating wheel 35. The top of the control pipe 31 is installed with the bottom of the desulfurizer bin 2 through a flange. The outer end of the control pipe 31 is vertically welded with a discharge plate bracket 32. The discharge plate 33 is circular and moves radially along the middle of the control pipe 31. The outer end of the discharge plate 33 is radially installed with a screw 34, and the screw 34 is threadedly connected to the discharge plate bracket 32. The outer end of the screw 34 is fixed with a rotating wheel 35. The star-shaped unloading valve 4 includes a unloading pipe 41, a star-shaped rotor 42, and a motor 43. The top of the unloading pipe 41 is installed with the bottom of the material control pipe 31 through a flange, and the bottom is installed with the top center of the buffer pump 1 through a flange. The star-shaped rotor 42 is installed inside the unloading pipe 41, and the motor 43 is installed on the outer wall of the unloading pipe 41. The output shaft of the motor 43 is connected to the star-shaped rotor 42.

[0028] During the specific implementation process, the inverted bucket structure of the desulfurizer bin 2 can concentrate the desulfurizer powder to the lower middle part for it to fall. The discharge plate 33 of the manual plug valve 3 can control the horizontal movement of the screw 34 through the rotary wheel 35 to control the discharge amount of the desulfurizer powder. Secondly, the star-shaped discharge valve 4 controls the star-shaped rotary wheel 35 through the motor 43 to accurately control the amount of desulfurizer powder falling into the buffer pump 1.

[0029] The degassing pipeline 5 is located at one side of the top of the buffer pump 1, the positive pressure air inlet pipe 6 is located in the middle of the buffer pump 1, and the positive pressure powder outlet pipe 7 is located at the top of the buffer pump 1. The positive pressure air inlet pipe 6 is horizontal, and one end of the positive pressure powder outlet pipe 7 is located inside the buffer pump 1 and faces downward. The positive pressure powder outlet pipe 7 is an inverted U-shaped structure, one end of which is located inside the buffer pump 1 and tilted downward, and the other end of the outside is vertically downward. The electric regulating valve 8 is installed at the outer end of the positive pressure powder outlet pipe 7.

[0030] During the specific implementation process, the venting pipeline 5 adjusts the air pressure in the buffer pump by opening and closing, the positive pressure air inlet pipe 6 and one end of the buffer pump 1 are opened downward, so that the star-shaped unloading valve 4 enters the buffer pump 1 to form a negative pressure to avoid backflow, which is convenient for materials to enter. The positive pressure powder outlet pipe 7 has one end opened downward in the buffer pump 1 to prevent the desulfurizer powder from falling into the pipe at the first time. The inverted U-shaped structure prevents the desulfurizer powder from flowing out of the positive pressure powder outlet pipe 7 by gravity, and facilitates the desulfurizer powder to be quantitatively sprayed out from the positive pressure powder outlet pipe 7 through the electric regulating valve 8 through the airflow.

[0031] The buffer pump fluidization chassis 9 is installed below the buffer pump 1 through a flange, and a fluidization air duct 10 is provided at the bottom of the buffer pump 1. The buffer pump fluidization chassis 9 includes a lower bottom plate 91, an upper top plate 92, a canvas 93, a connection hole 94, and a bottom hole 95. The upper top plate 92 and the lower bottom plate 91 are of the same size and butted up and down, with a canvas 93 provided in the middle. The top surface of the upper top plate 92 is hollowed out, exposing a large area of ​​the canvas 93. The upper top plate 92 and the lower bottom plate 91 have connection holes 94 running through the upper and lower ends of the circumference and are installed with the lower end of the buffer pump 1. The middle of the lower bottom plate 91 runs through a plurality of equidistant bottom holes 95, and the bottom holes 95 are honeycomb-shaped.

[0032] During the specific implementation process, the gas supplied by the fluidizing air duct 10 is blown toward the top of the buffer pump 1, and the narrow airflow passes through the honeycomb bottom hole 95 and the canvas to flow upward into the buffer pump 1 in a uniform manner, blowing the falling desulfurizer powder into a fluidized state to avoid accumulation and compaction.

[0033] The working principle of the utility model is as follows: the desulfurizer powder falls from the desulfurizer bin 2, and the unloading amount of the control pipe 31 is increased or decreased by manually controlling the unloading plate 33. The motor 43 controls the rotation of the star-shaped rotor 42 to allow the desulfurizer powder to quantitatively enter the buffer pump 1. During this period, the positive pressure air inlet pipe 6 and the fluidizing air duct 10 are supplied with air through an external air compressor or a fan. The positive pressure air inlet pipe 6 is located at the top and the opening faces downward, so that the desulfurizer powder initially enters the buffer pump 1 to form a negative pressure to avoid backflow. The fluidizing air duct 10 faces upward, and the gas is evenly distributed through the honeycomb bottom holes and canvas, so that the desulfurizer powder or lumps in the buffer pump 1 are broken up into a fluidized state. The desulfurizer powder after fluidization and dispersion is sprayed out from the positive pressure powder outlet pipe 7 through the air pressure in the buffer pump 1, and the discharge amount is controlled by an external electric regulating valve 8.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fluidized conveying device for preventing ultrafine powder from compacting, comprising a buffer pump (1), a desulfurizing agent bin (2) being arranged above the buffer pump (1), a manual gate valve (3) and a star-shaped discharge valve (4) being arranged from top to bottom on a pipeline connecting the desulfurizing agent bin (2) and the buffer pump (1), characterized in that: The buffer pump (1) comprises an air venting pipeline (5), a positive pressure air inlet pipe (6), a positive pressure powder outlet pipe (7), an electric regulating valve (8), a buffer pump fluidized chassis (9), and a fluidized air pipeline (10). The air venting pipeline (5) is located at one side of the top of the buffer pump (1), the positive pressure air inlet pipe (6) is located in the middle of the buffer pump (1), the positive pressure powder outlet pipe (7) is located at the top of the buffer pump (1), the electric regulating valve (8) is installed at the outer end of the positive pressure powder outlet pipe (7), the buffer pump fluidized chassis (9) is installed below the buffer pump (1) through a flange, and the bottom of the buffer pump (1) is provided with a fluidized air pipeline (10).

2. A fluidized conveying device for preventing ultrafine powder from compacting according to claim 1, characterized in that: The desulfurizing agent bin (2) is an inverted bucket structure.

3. A fluidized conveying device for preventing ultrafine powder from compacting according to claim 1, characterized in that: The manual gate valve (3) comprises a control pipe (31), a discharge plate bracket (32), a discharge plate (33), a screw (34), and a rotating wheel (35). The top of the control pipe (31) is mounted on the bottom of the desulfurizer bin (2) via a flange. The outer end of the control pipe (31) is vertically welded with the discharge plate bracket (32). The discharge plate (33) is circular and moves radially along the middle of the control pipe (31). The outer end of the discharge plate (33) is radially mounted with a screw (34). The screw (34) is threadedly connected to the discharge plate bracket (32). The outer end of the screw (34) is fixed with a rotating wheel (35).

4. The fluidized conveying device for preventing ultrafine powder from compacting according to claim 1, characterized in that: The star-shaped discharge valve (4) comprises a discharge pipe (41), a star-shaped rotor (42), and a motor (43); the top of the discharge pipe (41) is mounted to the bottom of the control pipe (31) via a flange, and the bottom is mounted to the top center of the buffer pump (1) via a flange; the discharge pipe (41) is internally mounted with the star-shaped rotor (42); the outer wall of the discharge pipe (41) is mounted with the motor (43); and the output shaft of the motor (43) is connected to the star-shaped rotor (42).

5. The fluidized conveying device for preventing ultrafine powder from compacting according to claim 1, characterized in that: The positive pressure air inlet pipe (6) is horizontally located and is located inside the buffer pump (1) with one end opening facing downward.

6. The fluidized conveying device for preventing ultrafine powder from compacting according to claim 1, characterized in that: The positive pressure powder discharge pipe (7) is an inverted U-shaped structure, with one end located inside the buffer pump (1) tilted downward and the other end outside vertically facing downward.

7. The fluidized conveying device for preventing ultrafine powder from compacting according to claim 1, characterized in that: The buffer pump fluidizing chassis (9) comprises a lower bottom plate (91), an upper top plate (92), a canvas (93), a connecting hole (94), and a bottom hole (95); the upper top plate (92) and the lower bottom plate (91) are of the same size and butted against each other from top to bottom, with a canvas (93) arranged in the middle; the top surface of the upper top plate (92) is hollowed out to expose a large area of ​​the canvas (93); the upper top plate (92) and the lower bottom plate (91) are provided with connecting holes (94) at the upper and lower ends of the circumference thereof for installation with the lower end of the buffer pump (1); and a plurality of equidistant bottom holes (95) are provided in the middle of the lower bottom plate (91).

8. The fluidized conveying device for preventing ultrafine powder from compacting according to claim 7, characterized in that: The bottom hole (95) is honeycomb-shaped.

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