Drying device for producing premixed dry-mixed mortar

Abstract

The utility model relates to a drying device for producing premixed dry-mixed mortar, which comprises a cylinder body, a hollow shaft is rotatably connected in the cylinder body, a spiral device is fixedly connected on the hollow shaft, the spiral device is provided with a cavity, the cavity is communicated with a middle cavity of the hollow shaft, the spiral device is provided with air holes arranged in an array mode, and an electric heating body is wound on the cylinder body. The electric heating body is in contact with the barrel, a feeding port is formed in the bottom end of the barrel, and a discharging port is formed in the top end of the barrel. According to the drying device for premixed dry-mixed mortar production, the external electric heating body is adopted for drying, generated hot steam is discharged out of the drying device through the cavity of the spiral device and the hollow spiral shaft, powdery materials contained in machine-made sand are prevented from being blown away, aggregate grading is guaranteed, and smoke dust is prevented from entering the atmosphere.

Description

Technical Field

[0001] The utility model relates to construction machinery technology, in particular to a drying device for producing premixed dry mortar. Background Art

[0002] Premixed mortar refers to various mortar mixtures produced by specialized manufacturers and used in construction projects. It is a new type of building material developed in my country in recent years. At present, many cities are gradually banning on-site mixing of mortar and promoting the use of premixed mortar. Premixed mortar has the advantages of energy saving, environmental protection and stable quality.

[0003] Premixed dry mortar is a dry mixture of mortar. In order to facilitate storage and avoid solidification of cementitious materials caused by moisture, the moisture content of aggregates in the mortar is required to be relatively high. The current drying method mostly uses dry hot air combined with stirring to heat and dry the aggregates. During drying, the dry hot air will blow in small aggregate particles and affect the grading of the aggregates, and will bring dust into the air to cause air pollution. Utility Model Content

[0004] The utility model aims to provide a drying device for the production of premixed dry mortar, which is used to solve the problem that hot dry air during drying affects the gradation of aggregates and brings dust into the air to cause air pollution.

[0005] In order to solve the above problems, the utility model provides a drying device for the production of premixed dry mortar, including a cylinder, a hollow shaft rotatably connected in the cylinder, an augers fixedly connected to the hollow shaft, the augers are provided with a cavity, the cavity is communicated with the middle cavity of the hollow shaft, the augers are provided with air holes arranged in an array, an electric heater is wrapped around the cylinder, the electric heater is in contact with the cylinder, a feeding port is provided at the bottom end of the cylinder, and a discharging port is provided at the top end of the cylinder.

[0006] The utility model provides a drying device for premixed dry mortar production, which also has the following technical features:

[0007] Furthermore, the cylinder is arranged to be vertically inclined.

[0008] Further, the air holes are arranged at the bottom of the spiralizer.

[0009] Furthermore, an outer cylinder is provided outside the electric heating body, and a heat insulating material is filled between the outer cylinder and the electric heating body.

[0010] Furthermore, a driven wheel is fixedly connected to the hollow shaft, a motor is fixedly connected to the cylinder, a driving wheel is fixedly connected to the driving shaft of the motor, and a belt is connected between the driving wheel and the driven wheel.

[0011] Furthermore, an exhaust fan is rotatably connected to the top opening of the hollow shaft, and the exhaust fan is fixedly connected to the cylinder.

[0012] Furthermore, a rib is fixedly connected to the top surface of the screw below the discharge port, and the rib is parallel to the spiral line of the screw.

[0013] The utility model has the following beneficial effects: the premixed dry mortar described in the present application is dried by an external electric heater, and the hot steam generated is discharged out of the drying device by the cavity of the spiral and the hollow spiral shaft, so as to avoid the dry hot air drying device blowing away the powdery materials contained in the machine-made sand, thereby ensuring the aggregate grading and preventing smoke and dust from entering the atmosphere. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a front cross-sectional schematic diagram of a drying device for producing premixed dry mortar according to an embodiment of the utility model;

[0015] Figure 2 A drying device for producing premixed dry mortar according to an embodiment of the utility model Figure 1 A zoomed in view of the node in the middle;

[0016] Figure 3 It is an axonometric schematic diagram of a drying device for producing premixed dry mortar according to an embodiment of the utility model.

[0017] (1- cylinder, 2- hollow shaft, 3- screw, 4- cavity, 5- air hole, 6- electric heating body, 7- feeding port, 8- discharging port, 9- outer cylinder, 10- driven wheel, 11- motor, 12- driving wheel, 13- belt, 14- exhaust fan, 15- rib) DETAILED DESCRIPTION

[0018] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that the embodiments and features in the embodiments of the present invention can be combined with each other without conflict.

[0019] like Figures 1 to 3 In the embodiment of the drying device for producing premixed dry mortar of the utility model shown, the drying device for producing premixed dry mortar includes a cylinder 1, a hollow shaft 2 is rotatably connected inside the cylinder 1, a spiral device 3 is fixedly connected to the hollow shaft 2, the spiral device 3 is provided with a cavity 4, the cavity 4 is connected to the middle cavity of the hollow shaft 2, the spiral device 3 is provided with air holes 5 arranged in an array, an electric heater 6 is wound around the cylinder 1, the electric heater 6 is in contact with the cylinder 1, a feeding port 7 is provided at the bottom end of the cylinder 1, and a discharge port 8 is provided at the top end of the cylinder 1.

[0020] Specifically, the mortar aggregate to be dried is put into the cylinder 1 from the feeding port 7, the hollow shaft 2 is rotated, and the screw 3 is driven to transport the mortar aggregate upward, and the electric heating body 6 is started to heat the mortar aggregate. The steam generated by the moisture in the mortar aggregate during heating enters the cavity 4 of the screw 3 from the air hole 5, and is discharged from the cylinder 1 through the middle cavity of the hollow shaft 2. After the mortar aggregate is dried, it is transported to the discharge port 8 at the top by the screw 3, and enters the aggregate silo through the discharge port 8. The screw conveyor is used in conjunction with the electric heating body 6 to heat and dry the mortar aggregate during transportation. The water vapor is discharged from the cylinder 1 through the air hole 5 of the screw 3 and the middle cavity of the hollow shaft 2, thereby avoiding the powder being blown away by the dry hot air during heating to affect the aggregate grading, and avoiding the dry hot air carrying away the smoke and dust into the atmosphere.

[0021] In one embodiment of the present application, preferably, the cylinder 1 is vertically inclined, which is convenient for feeding and discharging materials and for the upward movement of hot air generated during drying.

[0022] In one embodiment of the present application, preferably, the air holes 5 are arranged at the bottom of the screw 3. When the cylinder 1 is vertically tilted, water vapor moves upward, which is convenient for absorbing and collecting water vapor, while also preventing the air holes 5 from being blocked by mortar aggregates.

[0023] In one embodiment of the present application, preferably, an outer cylinder 9 is provided outside the electric heating body 6 , and a heat insulating material is filled between the outer cylinder 9 and the electric heating body 6 , thereby reducing heat loss of the electric heating body 6 .

[0024] In one embodiment of the present application, preferably, a driven wheel 10 is fixedly connected to the hollow shaft 2, a motor 11 is fixedly connected to the cylinder 1, a driving wheel 12 is fixedly connected to the driving shaft of the motor 11, and a belt 13 is connected between the driving wheel 12 and the driven wheel 10, which is used to drive the hollow shaft 2 to rotate and drive the screw 3 to rotate to transport mortar aggregate upward.

[0025] In one embodiment of the present application, preferably, an exhaust fan 14 is rotatably connected to the top opening of the hollow shaft 2, and the exhaust fan 14 is fixedly connected to the cylinder 1 to accelerate the diffusion of water vapor and improve the drying efficiency.

[0026] In one embodiment of the present application, preferably, the top surface of the screw 3 below the discharge port 8 is fixedly connected with a rib 15, and the rib 15 is parallel to the spiral line of the screw 3. The rib 15 is used to increase the movement of the mortar aggregate in the cylinder 1 to avoid consolidation of the aggregate due to too fast dehydration during drying.

[0027] In summary, the drying device for producing premixed dry mortar in the above embodiment of the utility model, specifically, puts the mortar aggregate to be dried into the cylinder 1 from the feeding port 7, starts the motor 11 to drive the hollow shaft 2 to rotate, drives the screw 3 to transport the mortar aggregate upward, starts the electric heating body 6 to heat the mortar aggregate, starts the exhaust fan 14, and the steam generated by the moisture in the mortar aggregate during heating enters the cavity 4 of the screw 3 from the air vent 5 at the bottom of the screw 3, and is discharged from the cylinder 1 through the middle cavity of the hollow shaft 2 through the exhaust fan 14. In addition, when the screw 3 rotates, the ribs 15 on the top of the screw 3 push the mortar aggregate to move to avoid consolidation due to rapid water loss. After the mortar aggregate is dried, it is transported to the top discharge port 8 by the screw 3 and enters the aggregate silo through the discharge port 8. The screw conveyor is used in conjunction with the electric heating body 6 to heat and dry the mortar aggregate during transportation. The water vapor is discharged from the cylinder 1 through the air vents 5 at the bottom of the screw 3 and the middle cavity of the hollow shaft 2, thereby avoiding the powder being blown away during drying to affect the aggregate grading and avoiding the smoke and dust being carried away into the atmosphere when the water vapor is discharged during drying.

[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A drying device for the production of premixed dry mortar, characterized in that: It includes a cylinder body, a hollow shaft is rotatably connected in the cylinder body, an augers is fixedly connected to the hollow shaft, the augers are provided with a cavity, the cavity is communicated with the middle cavity of the hollow shaft, the augers are provided with air holes arranged in an array, an electric heater is wrapped around the cylinder body, the electric heater is in contact with the cylinder body, a feeding port is provided at the bottom end of the cylinder body, and a discharging port is provided at the top end of the cylinder body.

2. The drying device for producing premixed dry mortar according to claim 1, characterized in that: The cylinder is arranged vertically and tilted.

3. The drying device for producing premixed dry mortar according to claim 2, characterized in that: The air vent is arranged at the bottom of the auger.

4. The drying device for producing premixed dry mortar according to claim 3, characterized in that: An outer cylinder is arranged outside the electric heating body, and a heat insulating material is filled between the outer cylinder and the electric heating body.

5. The drying device for producing premixed dry mortar according to claim 4, characterized in that: A driven wheel is fixedly connected to the hollow shaft, a motor is fixedly connected to the cylinder, a driving wheel is fixedly connected to the driving shaft of the motor, and a belt is connected between the driving wheel and the driven wheel.

6. The drying device for producing premixed dry mortar according to claim 5, characterized in that: An exhaust fan is rotatably connected to the top opening of the hollow shaft, and the exhaust fan is fixedly connected to the cylinder.

7. The drying device for producing premixed dry mortar according to claim 1, characterized in that: The top surface of the screw below the discharge port is fixedly connected with ribs, and the ribs are parallel to the spiral line of the screw.

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