Conveying device for pasty high-strength gypsum

Abstract

The utility model relates to a pasty high-strength gypsum conveying device which comprises a barrel type spiral conveyor and a steam interlayer arranged outside a barrel of the barrel type spiral conveyor, the steam interlayer is in an arc shape in the circumferential direction of the barrel and extends in the axial direction of the barrel, and an access hole is formed in the position, without the steam interlayer, of the barrel. And a plugging cover for plugging the access hole is arranged at the access hole. Through the arrangement of the steam interlayer, heat preservation of pasty calcium sulfate hemihydrate is effectively achieved, and the caking and solidification problems caused by temperature reduction in the conveying process are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of high-strength gypsum production, in particular to a conveying device for paste-like high-strength gypsum. Background Art

[0002] In the process of producing α-gypsum from citric acid gypsum, after the crystal transformation is completed, paste-like hemihydrate calcium sulfate is obtained, and then the paste-like hemihydrate calcium sulfate is conveyed to a pneumatic dryer by a conveyor for pneumatic drying. In order to avoid caking and solidification of the paste-like hemihydrate calcium sulfate during the conveying process, it is necessary to control the temperature of the paste-like hemihydrate calcium sulfate during the conveying process. The traditional conveying device cannot convey the paste-like hemihydrate calcium sulfate with heat preservation, and cannot meet the conveying requirements of the paste-like hemihydrate calcium sulfate. Therefore, there is an urgent need for a conveying device for paste-like high-strength gypsum, so that the temperature of the paste-like hemihydrate calcium sulfate meets the requirements during the conveying process and does not cake and solidify. Summary of the Utility Model

[0003] The utility model aims at the deficiencies of the prior art and provides a conveying device for paste-like high-strength gypsum.

[0004] The utility model is realized by the following technical solutions. A conveying device for paste-like high-strength gypsum is provided, which includes a cylindrical screw conveyor and a steam jacket arranged outside the cylinder body of the cylindrical screw conveyor. The steam jacket is arc-shaped along the circumferential direction of the cylinder body and extends along the axial direction of the cylinder body. An inspection opening is opened on the cylinder body without a steam jacket, and a plugging cover for plugging the inspection opening is installed at the inspection opening.

[0005] Preferably, a steam inlet is arranged at one end of the steam jacket, a steam outlet is arranged at the other end of the steam jacket, and a condensate discharge outlet is arranged at the bottom of the steam jacket.

[0006] Preferably, in order to make the steam more uniform in the steam jacket and make the temperature of the material in the cylindrical screw conveyor more uniform, both the steam inlet and the steam outlet are multiple, and the multiple steam inlets and the multiple steam outlets are respectively uniformly arranged at the ends of the steam jacket.

[0007] Preferably, the steam inlet is connected to a steam inlet main pipe, the steam outlet is connected to a steam outlet main pipe, a steam inlet valve is installed on the steam inlet main pipe, and an air outlet valve is installed on the steam outlet main pipe.

[0008] Preferably, the inspection opening is located at the top of the cylinder body, and the inspection opening is arc-shaped along the circumferential direction of the cylinder body and extends along the axial direction of the cylinder body.

[0009] Preferably, the plugging cover is embedded in the inspection opening and fixed to the cylinder body by bolts. Sealing gaskets are installed on each side of the plugging cover, and the contact between the plugging cover and the inspection opening is sealed through the sealing gaskets. When the material conveyed by the cylindrical screw conveyor accidentally cakes and solidifies, the staff can open and remove the plugging cover to open the inspection opening, which is convenient for cleaning the caked and solidified material.

[0010] Preferably, there are multiple condensate outlets, each of which has a water collecting bucket fixed at the bottom, and a collecting bottle installed at the lower end of the water collecting bucket. The mouth of the collecting bottle is threadedly connected to the lower end of the water collecting bucket, which is convenient for disassembly and assembly of the collecting bottle. The condensate in the steam interlayer is received by the water collecting bucket and collected in the collecting bottle, and the staff can regularly remove the collecting bottle to pour out the condensate.

[0011] Preferably, in order to achieve good thermal insulation effect of steam on materials in the cylindrical screw conveyor and facilitate maintenance, the steam interlayer covers two-thirds of the circumferential length of the cylinder, and the maintenance opening occupies nearly one-third of the circumferential length of the cylinder.

[0012] Preferably, a feed port and a discharge port are arranged on the barrel of the barrel-type screw conveyor, the feed port is located above one end of the barrel, the discharge port is located below the other end of the barrel, and the discharge port penetrates the air interlayer and communicates with the interior of the barrel.

[0013] The beneficial effects of the utility model are:

[0014] 1. The utility model has a simple structure. The heat preservation of the paste calcium sulfate hemihydrate is effectively achieved by setting a steam interlayer, avoiding the problem of caking and solidification caused by temperature reduction during transportation; the steam heating temperature is uniform, avoiding local caking of the paste calcium sulfate hemihydrate, and the steam interlayer is set with a cylindrical screw conveyor, and the conveying is promoted while stirring, so that the temperature of the paste calcium sulfate hemihydrate is uniform, making it possible to transport the paste calcium sulfate hemihydrate in a heat preservation manner.

[0015] 2. The utility model is provided with an inspection port. When the material conveyed by the cylindrical screw conveyor is accidentally agglomerated and solidified, the staff can remove the blocking cover to open the inspection port, so as to facilitate the cleaning of the agglomerated and solidified material. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a front view structural schematic diagram of the utility model;

[0017] Figure 2 It is a side view structural diagram of the cylinder and steam interlayer of the utility model;

[0018] Figure 3 It is a side view schematic diagram of the cutaway structure of the cylinder and steam interlayer of the utility model;

[0019] Figure 4 It is a schematic structural diagram of the utility model longitudinally cut along the front-back direction;

[0020] As shown in the figure:

[0021] 1. Cylinder, 2. Steam interlayer, 3. Sealing cover, 4. Bolts, 5. Steam inlet, 6. Steam outlet, 7. Water receiving hopper, 8. Collecting bottle, 9. Feed inlet, 10. Discharge outlet, 11. Lifting ring. Detailed implementation mode

[0022] To clearly illustrate the technical features of this solution, the following is an elaboration of this solution through specific implementation modes.

[0023] As Figures 1-4 shown, the utility model includes a cylindrical screw conveyor and a steam jacket 2 arranged outside the cylinder body 1 of the cylindrical screw conveyor. The steam jacket 2 is arc-shaped along the circumferential direction of the cylinder body 1 and extends along the axial direction of the cylinder body 1. An inspection opening is provided on the cylinder body 1 without the steam jacket 2, and a plugging cover 3 for plugging the inspection opening is installed at the inspection opening.

[0024] The inspection opening is located at the top of the cylinder body 1. The inspection opening is arc-shaped along the circumferential direction of the cylinder body 1 and extends along the axial direction of the cylinder body 1. The plugging cover 3 is embedded in the inspection opening and fixed to the cylinder body 1 through bolts 4. Sealing gaskets are installed on each side of the plugging cover 3, and the contact between the plugging cover 3 and the inspection opening is sealed through the sealing gaskets. When the materials conveyed by the cylindrical screw conveyor accidentally agglomerate and solidify, the staff can open and remove the plugging cover 3 to open the inspection opening, which is convenient for cleaning the agglomerated and solidified materials. A number of lifting rings 11 are fixed on the plugging cover, which is convenient for lifting and removing the plugging cover 3.

[0025] An inlet port 5 is provided at one end of the steam jacket 2, an outlet port 6 is provided at the other end of the steam jacket 2, and a condensate drain outlet is provided at the bottom of the steam jacket 2. In order to make the steam more uniform in the steam jacket 2 and make the temperature of the materials in the cylindrical screw conveyor more uniform, both the inlet port 5 and the outlet port 6 are multiple. The multiple inlet ports 5 and the multiple outlet ports 6 are evenly arranged at the ends of the steam jacket 2 respectively. The inlet port 5 is connected to the inlet main pipe, the outlet port 6 is connected to the outlet main pipe, an inlet valve is installed on the inlet main pipe, and an outlet valve is installed on the outlet main pipe.

[0026] In this embodiment, the condensate drain outlet is multiple. A water receiving hopper 7 is fixedly connected to the bottom of each condensate drain outlet. A collection bottle 8 is installed at the lower end of the water receiving hopper 7. The bottle mouth of the collection bottle 8 is threadedly connected to the lower end of the water receiving hopper 7, which is convenient for the disassembly and assembly of the collection bottle 8. The condensate in the steam jacket 2 is received by the water receiving hopper 7 and enters the collection bottle 8 for collection. The staff can regularly remove the collection bottle 8 to pour out the condensate.

[0027] In order to not only achieve a good heat preservation effect of the steam on the materials in the cylindrical screw conveyor but also facilitate maintenance, the steam jacket 2 covers two-thirds of the circumferential length of the cylinder body 1, and the inspection opening accounts for nearly one-third of the circumferential length of the cylinder body 1.

[0028] A feed inlet 9 and a discharge outlet 10 are provided on the cylinder body 1 of the cylindrical screw conveyor. The feed inlet 9 is located above one end of the cylinder body 1, and the discharge outlet 10 is located below the other end of the cylinder body 1. The discharge outlet 10 penetrates through the air jacket and is communicated with the inside of the cylinder body 1.

[0029] During specific operation, steam enters the steam jacket 2 through the steam inlet 5 and is discharged through the steam outlet 6. The pressure inside the steam jacket 2 is controlled to be 0.6 - 0.7 MPa, and the temperature is 160 - 165 °C. The paste-like hemihydrate calcium sulfate in the cylindrical screw conveyor is insulated by the steam inside the steam jacket 2. The paste-like hemihydrate calcium sulfate enters the cylindrical screw conveyor through the feed inlet 9 and is conveyed forward under the action of the spiral stirring teeth. During the conveying process, it is insulated by steam to avoid caking and solidification, and finally is discharged through the discharge outlet 10.

[0030] The structure of the utility model is simple. Through the setting of the steam jacket 2, the heat preservation of the paste-like hemihydrate calcium sulfate is effectively realized, and the problem of caking and solidification caused by the temperature reduction during the conveying process is avoided; the steam heating temperature is uniform, avoiding local caking of the paste-like hemihydrate calcium sulfate. Through the setting of the steam jacket 2 in cooperation with the cylindrical screw conveyor, it is stirred and advanced while conveying, making the temperature of the paste-like hemihydrate calcium sulfate uniform and making the heat-preserving conveying of the paste-like hemihydrate calcium sulfate possible; the utility model is provided with a maintenance opening. When the material conveyed by the cylindrical screw conveyor is accidentally caked and solidified, the staff can remove the plugging cover 3 to open the maintenance opening, which is convenient for cleaning the caked and solidified material.

[0031] Of course, the above description is not limited to the above examples. The technical features not described in the utility model can be realized by or adopted from the existing technology, and will not be elaborated here; the above embodiments and drawings are only used to illustrate the technical solutions of the utility model and are not a limitation to the utility model. The utility model has been described in detail with reference to the preferred embodiments. Those of ordinary skill in the art should understand that any changes, modifications, additions or substitutions made by those of ordinary skill in the art within the scope of the essence of the utility model do not depart from the purpose of the utility model and should also belong to the protection scope of the claims of the utility model.

Claims

1. A conveying device for paste-like high-strength gypsum, characterized in that: It includes a barrel screw conveyor and a steam interlayer arranged outside the barrel of the barrel screw conveyor. The steam interlayer is arc-shaped along the circumference of the barrel and extends along the axial direction of the barrel. An inspection port is opened on the barrel without the steam interlayer, and a sealing cover for sealing the inspection port is installed at the inspection port.

2. The conveying device for paste-like high-strength gypsum according to claim 1, characterized in that: A steam inlet is arranged at one end of the steam jacket, a steam outlet is arranged at the other end of the steam jacket, and a condensed water outlet is arranged at the bottom of the steam jacket.

3. The conveying device for paste-like high-strength gypsum according to claim 2, characterized in that: There are multiple steam inlets and multiple steam outlets, and the multiple steam inlets and multiple steam outlets are evenly arranged at the ends of the steam interlayer.

4. The conveying device for paste-like high-strength gypsum according to claim 1, characterized in that: The inspection opening is located at the top of the cylinder, and is arc-shaped along the circumference of the cylinder and extends along the axial direction of the cylinder.

5. The conveying device for paste-like high-strength gypsum according to claim 1, characterized in that: The plugging cover is embedded in the inspection port and fixed to the cylinder body by bolts, and sealing pads are installed on each side of the plugging cover.

6. The conveying device for paste-like high-strength gypsum according to claim 2, characterized in that: There are multiple condensed water outlets, and a water receiving bucket is fixed at the bottom of each condensed water outlet, and a collecting bottle is installed at the lower end of the water receiving bucket.

7. The conveying device for paste-like high-strength gypsum according to claim 1, characterized in that: The steam jacket covers two-thirds of the circumferential length of the shell.

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