Gypsum powder calcining device

Abstract

The utility model discloses a gypsum powder calcining device which comprises a calcining box, a hollow stirring rod is rotationally connected into the calcining box, a spiral stirring blade is installed at the lower end of the hollow stirring rod, and the top end of the hollow stirring rod extends out of the calcining box to be provided with a high-speed rotating connector. A main pipe is installed at the other end of the high-speed rotating connector and communicates with a smoke inlet pipe and a water inlet pipe through a tee joint. According to the gypsum powder calcining device, the smoke inlet pipe is communicated with the external calcining device, so that high-temperature smoke can be fed into the hollow stirring rod through the high-speed rotating joint and finally sprayed out from the through holes in the surfaces of the plurality of hollow stirring blades, the high-temperature smoke can be uniformly fed into the calcining box, the contact area between the high-temperature smoke and gypsum powder is increased, and the gypsum powder calcining efficiency is improved. And the water inlet pipe is connected with the water outlet end of an external booster pump, pressurized water can be sprayed out from the through holes, the effect of flushing the inner wall of the calcining box is achieved, and cleaning is more time-saving and labor-saving.

Description

Technical Field

[0001] The utility model relates to the technical field of gypsum powder processing, in particular to a gypsum powder calcining device. Background Art

[0002] Gypsum stone or industrial by-product gypsum exists in the form of calcium sulfate dihydrate, and there are two crystal waters in its molecular formula. Only when one and a half of the crystal waters are removed to form calcium sulfate hemihydrate can it have gelling properties. The process of removing the crystal water is called calcining of gypsum. The traditional calcination method is generally to calcine it in a combustion furnace. During calcination, a stirring device is usually provided to stir the gypsum powder raw material so that it is calcined evenly.

[0003] The existing technology has the following problems:

[0004] After extensive searching, it was found that Chinese Patent No.: CN217600608U discloses a gypsum powder calcining device, including a calcining box, a top cover is movably sleeved on the top of the calcining box, a plurality of support rods are fixedly installed on the outer wall of the calcining box, an annular tube is fixedly installed on the inner wall of the calcining box, a flue gas nozzle is fixedly installed on the annular tube, a calcining device is fixedly installed on one side of the calcining box, a conveying pipe is arranged on the calcining device, one end of the conveying pipe penetrates the outer wall of the calcining box and extends into the calcining box, and is fixedly connected to the annular tube, a rotating shaft is rotatably connected in the calcining box, a driving mechanism for driving the rotating shaft to rotate is arranged on the calcining box, gypsum powder raw material is injected into the calcining box, the calcining device generates high-temperature flue gas, and the gypsum powder in the calcining box is calcined through a plurality of flue gas nozzles, and during the calcining process, the motor is started, the motor will drive the rotating shaft and the stirring column to rotate, and the stirring column will stir the gypsum powder raw material calcined in the calcining box to make it calcine evenly.

[0005] However, the above patent still has some problems in actual use. The most obvious one is that after the high-temperature flue gas enters the calcination box, it is difficult for it to fully contact the gypsum powder in the calcination box, resulting in uneven heating of the gypsum powder, which affects the calcination effect and efficiency of the gypsum powder.

[0006] To this end, we proposed a gypsum powder calcining device to solve the above-mentioned drawbacks. Utility Model Content

[0007] The utility model aims to provide a gypsum powder calcining device in order to solve the shortcomings in the prior art.

[0008] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a gypsum powder calcining device comprises a calcining box, the interior of the calcining box is rotatably connected with a hollow stirring rod, and the lower end of the hollow stirring rod is equipped with a spiral stirring blade, the top end of the hollow stirring rod extends to the outside of the calcining box and is equipped with a high-speed rotating joint, and the other end of the high-speed rotating joint is equipped with a main pipe, and the main pipe is connected with a smoke inlet pipe and a water inlet pipe through a tee, and valves are installed on the surfaces of the smoke inlet pipe and the water inlet pipe, a second gear is installed on the upper end of the surface of the hollow stirring rod, a driving motor is installed on one side of the top surface of the calcining box, and a first gear is installed on the output end of the driving motor, and the first gear is meshed with the second gear, a hollow stirring blade is welded on the surface of the hollow stirring rod, and a through hole is opened on the surface of the hollow stirring blade, a scraper is installed at one end of the hollow stirring blade, and the surface of the scraper is in contact with the inner wall of the calcining box.

[0009] Preferably, a control panel is installed on the outer wall of the calcining box, and the control panel is electrically connected to the driving motor through a wire.

[0010] Preferably, there are a plurality of through holes, and the plurality of through holes are equidistantly distributed on the surface of the hollow stirring blade.

[0011] Preferably, the hollow stirring blades are provided in plurality, and a ring-shaped array of the plurality of hollow stirring blades is distributed on the surface of the hollow stirring rod.

[0012] Preferably, a discharge port is fixedly mounted on the bottom surface of the calcining box, and a valve is installed on the discharge port.

[0013] Preferably, the length of the scraper is the same as the length of the calcining box.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. In the utility model, by connecting the smoke inlet pipe with the external calcining device, the high-temperature smoke can be sent into the hollow stirring rod through the high-speed rotating joint, and finally sprayed out from the through holes on the surface of a plurality of hollow stirring blades, so that the high-temperature smoke can be evenly sent into the interior of the calcining box, thereby increasing the contact area between the high-temperature smoke and the gypsum powder, and the calcination is more uniform. By connecting the water inlet pipe with the water outlet end of the external booster pump, the pressurized water can be sprayed out from the through hole to achieve the effect of flushing the inner wall of the calcining box, and the cleaning is more time-saving and labor-saving.

[0016] 2. In the utility model, a spiral stirring blade is provided, and the spiral stirring blade rotates with the hollow stirring rod, so that the gypsum powder at the bottom of the calcining box can be turned upward and stirred, thereby avoiding the problem of uneven stirring of the gypsum powder at the bottom of the calcining box. At the same time, the setting of the scraper can also clean the gypsum powder on the inner wall of the calcining box, so that the gypsum powder is not easy to remain on the inner wall of the calcining box, and the discharge is cleaner and more thorough. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 This is a schematic diagram of the structure of the gypsum powder calcining device proposed in the utility model;

[0019] Figure 2 for Figure 1 A is an enlarged schematic diagram;

[0020] Figure 3 This is a schematic diagram of the external structure of the gypsum powder calcining device proposed in the utility model;

[0021] Figure 4 It is a schematic diagram of the structure of a hollow stirring rod, a scraper and a hollow stirring blade.

[0022] Legend:

[0023] 1. Calcination box; 2. Discharge port; 3. Drive motor; 4. First gear; 5. Hollow stirring rod; 6. Second gear; 7. High-speed rotary joint; 8. Main pipe; 9. Smoke inlet pipe; 10. Water inlet pipe; 11. Valve; 12. Control panel; 13. Spiral stirring blade; 14. Scraper; 15. Hollow stirring blade; 16. Through hole. DETAILED DESCRIPTION

[0024] 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.

[0025] In the description of the present utility model, it should be noted that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model; the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance; in addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 it can be an indirect connection through an intermediate medium, or it can be a communication between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0026] Please refer to Figure 1-4The gypsum powder calcining device comprises a calcining box 1, wherein a hollow stirring rod 5 is rotatably connected inside the calcining box 1, and a spiral stirring blade 13 is installed at the lower end of the hollow stirring rod 5, and the top end of the hollow stirring rod 5 extends to the outside of the calcining box 1 and is installed with a high-speed rotating joint 7, and a main pipe 8 is installed at the other end of the high-speed rotating joint 7, and a smoke inlet pipe 9 and a water inlet pipe 10 are connected to the main pipe 8 through a tee, and valves 11 are installed on the surfaces of the smoke inlet pipe 9 and the water inlet pipe 10, and a second gear 6 is installed on the upper end of the surface of the hollow stirring rod 5, a driving motor 3 is installed on one side of the top surface of the calcining box 1, and a first gear 4 is installed on the output end of the driving motor 3, and the first gear 4 is meshed with the second gear 6, a hollow stirring blade 15 is welded on the surface of the hollow stirring rod 5, and a through hole 16 is opened on the surface of the hollow stirring blade 15, a scraper 14 is installed at one end of the hollow stirring blade 15, and the surface of the scraper 14 is in contact with the inner wall of the calcining box 1, and gypsum powder is put into In the calcining box 1, by connecting the smoke inlet pipe 9 with the external calcining device, the high-temperature flue gas can be sent into the hollow stirring rod 5 through the high-speed rotating joint 7, and finally sprayed out from the through holes 16 on the surfaces of the plurality of hollow stirring blades 15, so that the high-temperature flue gas can be evenly sent into the interior of the calcining box 1, thereby increasing the contact area between the high-temperature flue gas and the gypsum powder, and the calcination is more uniform. Secondly, the spiral stirring blades 13 rotate with the hollow stirring rod 5, so that the gypsum powder at the bottom of the calcining box 1 can be flipped and stirred upwards, thereby avoiding the problem of uneven stirring of the gypsum powder at the bottom of the calcining box 1. At the same time, the setting of the scraper 14 can also clean the gypsum powder on the inner wall of the calcining box 1, so that the gypsum powder is not easy to remain on the inner wall of the calcining box 1, and the discharge is cleaner and more thorough. Finally, after use, by connecting the water inlet pipe 10 with the water outlet end of the external booster pump, the pressurized water can be sprayed out from the through holes 16, so as to achieve the effect of flushing the inner wall of the calcining box 1, and the cleaning is more time-saving and labor-saving.

[0027] In this embodiment: a control panel 12 is installed on the outer wall of the calcining box 1, and the control panel 12 is electrically connected to the driving motor 3 through a wire.

[0028] Specifically, it is a common circuit connection structure, which will not be described in detail here.

[0029] In this embodiment, a plurality of through holes 16 are provided, and the plurality of through holes 16 are evenly distributed on the surface of the hollow stirring blade 15 .

[0030] Specifically, the calcination effect of the gypsum powder and the flushing effect and efficiency of the inner wall of the calcination box 1 are improved.

[0031] In this embodiment, a plurality of hollow stirring blades 15 are provided, and a ring array of the plurality of hollow stirring blades 15 is distributed on the surface of the hollow stirring rod 5 .

[0032] Specifically, the mixing effect and efficiency of gypsum powder are improved.

[0033] In this embodiment: a discharge port 2 is fixedly installed on the bottom surface of the calcining box 1 , and a valve 11 is installed on the discharge port 2 .

[0034] Specifically, the opening and closing of the discharge port 2 can be controlled.

[0035] In this embodiment, the length of the scraper 14 is the same as the length of the calcining box 1 .

[0036] Specifically, under the premise of ensuring that the scraper 14 is installed in the calcining box 1, the scraping effect and efficiency of the inner wall of the calcining box 1 are improved.

[0037] In this embodiment: the controller is an existing structure, and the control circuit can be implemented by simple programming by technicians in this field. It belongs to the common knowledge in this field. It is only used without modification, so the control method and circuit connection are not described in detail.

[0038] Working principle: When in use, gypsum powder is put into the calcining box 1, and the smoke inlet pipe 9 is connected with the external calcining device, so that the high-temperature flue gas can be sent into the hollow stirring rod 5 through the high-speed rotating joint 7, and finally ejected from the through holes 16 on the surface of the plurality of hollow stirring blades 15, so that the high-temperature flue gas can be evenly sent into the interior of the calcining box 1, increasing the contact area between the high-temperature flue gas and the gypsum powder, and the calcination is more uniform. Secondly, the spiral stirring blade 13 rotates with the hollow stirring rod 5, which can make the bottom of the calcining box 1 The gypsum powder at the bottom is turned over and stirred upwards to avoid the problem of uneven stirring of the gypsum powder at the bottom of the calcining box 1. At the same time, the scraper 14 can also clean the gypsum powder on the inner wall of the calcining box 1, so that the gypsum powder is not easy to remain on the inner wall of the calcining box 1, and the discharge is cleaner and more thorough. Finally, after use, the water inlet pipe 10 is connected to the water outlet end of the external booster pump, and the pressurized water can be sprayed out from the through hole 16 to achieve the effect of flushing the inner wall of the calcining box 1, and the cleaning is more time-saving and labor-saving.

[0039] It should be noted that the model and specifications of the drive motor 3 need to be selected and determined according to the actual specifications of the device, and the specific selection and calculation method adopts the existing technology in this field, so it will not be described in detail.

[0040] The power supply and principle of the driving motor 3 are clear to those skilled in the art and will not be described in detail here.

[0041] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A gypsum powder calcining device, comprising a calcining box (1), characterized in that: The calcining box (1) is rotatably connected to a hollow stirring rod (5), and a spiral stirring blade (13) is installed at the lower end of the hollow stirring rod (5). The top end of the hollow stirring rod (5) extends to the outside of the calcining box (1) and is installed with a high-speed rotating joint (7). The other end of the high-speed rotating joint (7) is installed with a main pipe (8), and the main pipe (8) is connected to a smoke inlet pipe (9) and a water inlet pipe (10) through a tee. Valves (11) are installed on the surfaces of the smoke inlet pipe (9) and the water inlet pipe (10). The hollow stirring rod (5) A second gear (6) is installed on the upper end of the surface of the calcining box (1); a driving motor (3) is installed on one side of the top surface of the calcining box (1); and a first gear (4) is installed on the output end of the driving motor (3), and the first gear (4) is meshed with the second gear (6); a hollow stirring blade (15) is welded on the surface of the hollow stirring rod (5), and a through hole (16) is opened on the surface of the hollow stirring blade (15); a scraper (14) is installed on one end of the hollow stirring blade (15), and the surface of the scraper (14) is in contact with the inner wall of the calcining box (1).

2. The gypsum powder calcining device according to claim 1, characterized in that: A control panel (12) is installed on the outer wall of the calcining box (1), and the control panel (12) is electrically connected to the driving motor (3) via a wire.

3. The gypsum powder calcining device according to claim 1, characterized in that: A plurality of through holes (16) are provided, and the plurality of through holes (16) are evenly distributed on the surface of the hollow stirring blade (15).

4. The gypsum powder calcining device according to claim 1, characterized in that: A plurality of the hollow stirring blades (15) are provided, and a ring-shaped array of the plurality of hollow stirring blades (15) is distributed on the surface of the hollow stirring rod (5).

5. The gypsum powder calcining device according to claim 1, characterized in that: A discharge port (2) is fixedly mounted on the bottom surface of the calcining box (1), and a valve (11) is mounted on the discharge port (2).

6. The gypsum powder calcining device according to claim 1, characterized in that: The length of the scraper (14) is the same as the length of the calcining box (1).

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