Suspension calcination fluidization blanking device

Abstract

The utility model discloses a suspension calcination fluidization blanking device which comprises a hot blast stove, one side of the top of the hot blast stove is communicated with a suspension kiln chamber, a material scattering disc is arranged in a feeding port, and the bottom of the material scattering disc is fixedly connected with an arc-shaped supporting handle. According to the suspension calcination fluidization discharging device, the star-shaped discharging valve, the feeding opening, the Roots blower, the discharging pipe, the arc-shaped adjusting pipe, the scattering disc and the arc-shaped supporting handle are arranged, when the suspension calcination fluidization discharging device is used, the Roots blower continuously blows air to the discharging pipe, high-pressure air feeds materials to the feeding opening in the side edge of a kiln chamber of a suspension kiln along the discharging pipe, and the materials are discharged through the discharging opening. Materials are discharged from the opening in the tail end of the discharging pipe, the material scattering disc receives the sprayed materials, and after fluidized powder collides with the material scattering disc, particles originally flowing in parallel will diffuse outwards in a radial mode under the action of the cambered surface and are evenly distributed in a suspension kiln chamber, so that the functions of stable feeding and impact resistance are achieved, and the material scattering disc is prevented from being damaged. The problem of impact type blanking of the device is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of feeding devices, in particular to a suspended calcination fluidized feeding device. Background Art

[0002] Suspension calcination is a new type of calcination technology, which is characterized by first grinding the material into fine powder, then preheating it in a cyclone preheater, calcining it in a suspension kiln, and cooling it in a cyclone cooler to obtain the finished product. Since the material enters the kiln in a fine powder state for calcination, this technology has the advantages of fast material decomposition rate, short calcination time, low energy consumption per unit product, and low nitrogen oxide generation.

[0003] The existing suspension kiln chambers usually adopt the following feeding methods: (1) direct feeding by a screw feeder; (2) cyclone separator + gravity flap valve + material spreading plate; (3) cyclone separator + star discharge valve + material spreading plate. A common problem of the above three feeding methods is that there will be strong fluctuations in the feeding process, which will cause frequent impact feeding problems in the suspension furnace. The powder is difficult to be blown away and carried by the hot flue gas in a short time due to the high-speed impact, which will cause the suspension kiln chamber to collapse and stop production.

[0004] Now, a new type of suspended calcination fluidized feeding device is proposed to solve the above problems. Utility Model Content

[0005] The utility model aims to provide a suspension calcination fluidized material feeding device to solve the problem of impact-type material feeding proposed in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a suspended calcination fluidized bed feeding device, comprising a hot blast furnace, one side of the top of the hot blast furnace is connected to a suspension kiln chamber, a feed port is arranged on one side of the suspension kiln chamber, a steel structure support frame is arranged near the hot blast furnace, a silo is fixedly connected to the top of the steel structure support frame, a discharge port is arranged at the bottom of the silo, a feed port is arranged below the discharge port, a star-shaped unloading valve is installed between the bottom end of the discharge port and the top end of the feed port, a Roots blower is arranged below the silo, a feeding pipe is installed on one side of the feed port, an arc-shaped adjusting pipe is fixedly connected to one side of the bottom of the feed port, a spreading plate is arranged inside the feed port, and an arc-shaped support handle is fixedly connected to the bottom of the spreading plate.

[0007] Preferably, one side of the Roots blower is connected to one side of the feed pipe, and the other side of the feed pipe is obliquely inserted into one side of the feed port, and the angle between the central axis of the feed pipe in the feed port and the horizontal plane is 60 to 90 degrees.

[0008] Preferably, the air pressure provided by the Roots blower is 0.5-2 MPa.

[0009] Preferably, the bottom opening of the feeding pipe points to the center of the material spreading plate, and the surface of the material spreading plate points to the center of the kiln chamber of the suspension kiln.

[0010] Preferably, the material spreading plate is movable, and the angle between the bottom end of the material spreading plate and the inner wall of the feeding pipe can be adjusted within a range of 0 to 45°, and the angle between the feeding port and the horizontal plane is 30 to 45°.

[0011] Preferably, the outer diameter and curvature of the arc-shaped support handle match the inner diameter and curvature of the arc-shaped adjustment tube, and the arc-shaped support handle can be displaced along the inside of the arc-shaped adjustment tube.

[0012] Preferably, the surface of the spreading plate is a curved surface or a flat surface.

[0013] Compared with the prior art, the utility model has the following beneficial effects: the suspended calcination fluidized material feeding device realizes the function of stable material feeding;

[0014] (1) By arranging a star-shaped discharge valve, a feeding port, a Roots blower, a feeding pipe, an arc-shaped regulating pipe, a spreading plate and an arc-shaped supporting handle, when in use, the high-temperature hot flue gas flows upward along the bottom of the kiln chamber of the suspension kiln. When feeding, the star-shaped discharge valve is opened first, and the material inside the silo enters the star-shaped discharge valve along the discharge port. The star-shaped discharge valve sends the material into the feeding pipe through the feeding port at a fixed speed. The Roots blower continuously blows air to the feeding pipe, and the high-pressure air sends the material along the feeding pipe to the feeding port on the side of the kiln chamber of the suspension kiln. The material is discharged from the end opening of the feeding pipe. Discharge, the scattering plate receives the sprayed material, and after the fluidized powder hits the scattering plate, the particles that originally flowed parallel to each other will diffuse radially outward under the action of the arc surface, and are relatively evenly distributed in the suspension kiln chamber, which can push the arc support handle, and the arc support handle moves along the inside of the arc adjustment tube, so as to change and adjust the angle between the scattering plate and the horizontal plane, and control the distribution of powders with different physical parameters in the suspension kiln chamber. After entering the suspension kiln chamber, the powder is immediately mixed with the high-temperature hot flue gas flowing from bottom to top for calcination, thereby realizing the function of stable material discharge. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of a partial cross-sectional structure of the utility model in a front view;

[0016] Figure 2 It is a schematic diagram of a partial cross-sectional structure of a discharge port of the utility model from a side view;

[0017] Figure 3 For the utility model Figure 1 A partial cross-section at the center is an enlarged structural diagram;

[0018] Figure 4It is a front view enlarged structural schematic diagram of the spreading plate of the utility model.

[0019] In the figure: 1. hot air furnace; 2. suspension kiln chamber; 3. feed port; 4. silo; 5. discharge port; 6. star-shaped discharge valve; 7. feeding port; 8. Roots blower; 9. discharge pipe; 10. arc-shaped adjustment pipe; 11. spreading plate; 12. arc-shaped support handle; 13. steel structure support frame. DETAILED DESCRIPTION

[0020] 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 the embodiments. Based on the embodiments in 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.

[0021] Example 1: Please refer to Figure 1-4 A suspension calcination fluidized material feeding device comprises a hot blast furnace 1, one side of the top of the hot blast furnace 1 is connected with a suspension kiln chamber 2, one side of the suspension kiln chamber 2 is provided with a feeding port 3, a steel structure support frame 13 is provided on the left side of the hot blast furnace 1, a silo 4 is fixedly connected to the top of the steel structure support frame 13, a discharge port 5 is provided at the bottom of the silo 4, a feeding port 7 is provided below the discharge port 5, a star-shaped discharge valve 6 is installed between the bottom end of the discharge port 5 and the top end of the feeding port 7, a Roots blower 8 is provided below the silo 4, a feeding pipe 9 is installed on one side of the feeding port 3, an arc-shaped regulating pipe 10 is fixedly connected to one side of the bottom of the feeding port 3, a spreading disc 11 is provided inside the feeding port 3, and an arc-shaped support handle 12 is fixedly connected to the bottom of the spreading disc 11;

[0022] The interiors of the silo 4, the discharge port 5, the star-shaped discharge valve 6, and the feed port 7 are interconnected. One side of the Roots blower 8 is connected to one side of the feed pipe 9. The other side of the feed pipe 9 is obliquely inserted into one side of the feed port 3. The air pressure provided by the Roots blower 8 is 0.5-2MPa. The bottom opening of the feed pipe 9 points to the center of the scattering plate 11. The surface of the scattering plate 11 points to the center of the suspension kiln chamber 2. The angle between the central axis of the feed pipe 9 located in the feed port 3 and the horizontal plane is 60-90°, and the fluidized feeding is more stable.

[0023] The material spreading plate 11 is movable, and the angle between the bottom end of the material spreading plate 11 and the inner wall of the feeding tube 9 can be adjusted within 0-45°, the angle between the feeding port 3 and the horizontal plane is 30-45°, the outer diameter and curvature of the arc-shaped support handle 12 match the inner diameter and curvature of the arc-shaped adjustment tube 10, and the arc-shaped support handle 12 can be displaced along the inside of the arc-shaped adjustment tube 10, and the surface of the material spreading plate 11 is an arc surface or a plane, which can eliminate impact and diffuse powder at the same time to ensure calcination efficiency;

[0024] Specifically, Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the star-shaped discharge valve 6 delivers the material into the discharge pipe 9 through the feed port 7 at a fixed speed, and the Roots blower 8 continuously blows air toward the discharge pipe 9. The high-pressure air delivers the material along the discharge pipe 9 to the feed port 3 on the side of the suspension kiln chamber 2. The material is discharged from the end opening of the discharge pipe 9, and the scattering plate 11 receives the sprayed material. After the fluidized powder hits the scattering plate 11, the particles that originally flowed parallel to each other will diffuse radially outward under the action of the arc surface, and are relatively evenly distributed in the suspension kiln chamber 2, which can push the arc-shaped support handle 12. The arc-shaped support handle 12 moves along the inner displacement of the arc-shaped adjustment tube 10, so as to change and adjust the angle between the scattering plate 11 and the horizontal plane, and control the distribution of powders with different physical properties in the suspension kiln chamber 2.

[0025] Working principle: When the utility model is in use, first, the high-temperature hot flue gas flows upward along the bottom of the suspension kiln chamber 2. When feeding, the star-shaped discharge valve 6 is opened first, and the material inside the silo 4 enters the star-shaped discharge valve 6 along the discharge port 5. The star-shaped discharge valve 6 sends the material into the discharge pipe 9 through the feeding port 7 at a fixed speed. The Roots blower 8 continuously blows air to the discharge pipe 9. The high-pressure air sends the material along the discharge pipe 9 to the feed port 3 on the side of the suspension kiln chamber 2. The material is discharged from the end opening of the discharge pipe 9, and the spreading plate 11 supports the material. The sprayed material, after the fluidized powder hits the scattering plate 11, the particles that originally flowed parallel to each other will diffuse radially outward under the action of the arc surface, and be more evenly distributed in the suspension kiln chamber 2, which can push the arc support handle 12. The arc support handle 12 moves along the inside of the arc adjustment tube 10, so as to change and adjust the angle between the scattering plate 11 and the horizontal plane, and control the distribution of powders with different physical properties in the suspension kiln chamber 2. After entering the suspension kiln chamber 2, the powder is immediately mixed with the high-temperature hot flue gas flowing from bottom to top for calcination.

[0026] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A suspension calcination fluidized material feeding device, comprising a hot blast furnace (1), characterized in that: One side of the top of the hot blast furnace (1) is connected to the suspension kiln chamber (2), and a feed port (3) is provided on one side of the suspension kiln chamber (2). A steel structure support frame (13) is provided near the hot blast furnace (1). The top of the steel structure support frame (13) is fixedly connected to a silo (4). The bottom of the silo (4) is provided with a discharge port (5). A feed port (7) is provided below the discharge port (5). A star-shaped discharge valve (6) is installed between the bottom end of the discharge port (5) and the top end of the feed port (7). A Roots blower (8) is provided below the silo (4). A discharge pipe (9) is installed on one side of the feed port (3). An arc-shaped regulating pipe (10) is fixedly connected to one side of the bottom of the feed port (3). A material spreading plate (11) is provided inside the feed port (3), and an arc-shaped support handle (12) is fixedly connected to the bottom of the material spreading plate (11).

2. A suspension calcination fluidized feeding device according to claim 1, characterized in that: The interiors of the silo (4), the discharge port (5), the star-shaped discharge valve (6), and the feed port (7) are interconnected.

3. A suspension calcination fluidized feeding device according to claim 1, characterized in that: One side of the Roots blower (8) is connected to one side of the feed pipe (9), and the other side of the feed pipe (9) is obliquely inserted into one side of the feed port (3). The angle between the central axis of the feed pipe (9) located in the feed port (3) and the horizontal plane is 60 to 90 degrees.

4. A suspension calcination fluidized feeding device according to claim 1, characterized in that: The air pressure provided by the Roots blower (8) is 0.5-2 MPa.

5. The suspended calcination fluidized feeding device according to claim 1, characterized in that: The bottom opening of the feeding pipe (9) points to the center of the material spreading plate (11), and the plate surface of the material spreading plate (11) points to the center of the suspension kiln chamber (2).

6. The suspension calcination fluidized material feeding device according to claim 1, characterized in that: The material spreading plate (11) is movable, and the angle between the bottom end of the material spreading plate (11) and the inner wall of the feeding pipe (9) can be adjusted within a range of 0 to 45 degrees, and the angle between the feeding port (3) and the horizontal plane is within a range of 30 to 45 degrees.

7. The suspended calcination fluidized material feeding device according to claim 1, characterized in that: The outer diameter and curvature of the arc-shaped support handle (12) match the inner diameter and curvature of the arc-shaped adjustment tube (10), and the arc-shaped support handle (12) can be displaced along the inside of the arc-shaped adjustment tube (10).

8. The suspended calcination fluidized material feeding device according to claim 1, characterized in that: The surface of the material spreading plate (11) is a curved surface or a flat surface.

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