Ceramsite sand drying device

Abstract

The utility model relates to a ceramsite sand drying device which comprises a drying cylinder, two ends of the drying cylinder are fixedly connected with supports, the supports are rotatably connected with a stirring shaft, the stirring shaft rotates in the drying cylinder, the stirring shaft is fixedly connected with a plurality of stirring blades, an electric heating body is evenly wound on the drying cylinder, one end of the drying cylinder is provided with a feeding port, and the other end of the drying cylinder is provided with a discharging port. And a discharge hole is formed in the other end of the drying cylinder. According to the ceramsite sand drying device, the electric heating bodies which are uniformly arranged are matched with the stirring blades, so that the temperature in the drying cylinder is uniform, ceramsite sand is dried and heated uniformly through stirring, and the situation that the quality and the drying efficiency of the ceramsite sand are affected due to non-uniform drying is avoided.

Description

Technical Field

[0001] The utility model relates to a drying device, in particular to a ceramsite sand drying device. Background Art

[0002] In recent years, with the rapid development of the world's oil industry, the difficulty of oil and natural gas extraction is gradually increasing, the depth of oil and natural gas wells is getting deeper and deeper, and there are more and more low-permeability deposits. The demand for high-strength proppant products at home and abroad is also increasing. Ceramic sand has become the first choice of proppant due to its excellent low density, high strength and high porosity.

[0003] Ceramic sand is mainly made of clay, slate, shale, coal gangue and industrial solid waste through ceramic sintering. The existing production of ceramsite sand is to crush the raw materials and then form a spherical structure through a ball forming machine. Direct calcination will cause cracks and affect the quality of ceramsite sand. The semi-finished ceramsite sand needs to be dried and preheated first. The existing dry hot air drying method has too high hot air outlet temperature, and as the length of the drying equipment increases, the temperature drops rapidly, resulting in uneven drying. Utility Model Content

[0004] The utility model aims to provide a ceramsite sand drying device, which is used to solve the problem that the hot air outlet temperature of the existing dry hot air drying method is too high, and the temperature decreases rapidly as the length of the drying equipment increases, resulting in uneven drying.

[0005] In order to solve the above problems, the utility model provides a ceramsite sand drying device, including a drying cylinder, two ends of the drying cylinder are fixedly connected with supports, the supports are rotatably connected with a stirring shaft, the stirring shaft rotates in the drying cylinder, a plurality of stirring blades are fixedly connected to the stirring shaft, an electric heating body is evenly wound on the drying cylinder, a feed port is provided at one end of the drying cylinder, and a discharge port is provided at the other end of the drying cylinder.

[0006] The ceramsite sand drying device provided by the utility model also has the following technical features:

[0007] Furthermore, an outer cylinder is sleeved on the drying cylinder, the outer cylinder is fixedly connected to the drying cylinder, and a heat insulating material is filled between the outer cylinder and the electric heating body.

[0008] Furthermore, the stirring blade is in a spirally inclined shape, the stirring blade is inclined toward the discharge port, and the outer edge of the stirring blade is in contact with the inner wall of the drying cylinder.

[0009] Furthermore, adjacent stirring blades are arranged in a staggered manner.

[0010] Furthermore, the top of the drying cylinder is provided with air outlet holes arranged in an array, and the air outlet holes are directly connected to the outside.

[0011] Furthermore, a motor is fixedly connected to the support, and a driving shaft of the motor is fixedly connected to the stirring shaft.

[0012] The utility model has the following beneficial effects: the expanded clay sand drying device described in the present application adopts evenly arranged electric heating bodies and stirring blades to make the temperature in the drying cylinder uniform, and stirring makes the expanded clay sand evenly heated during drying, thus avoiding uneven drying that affects the quality and drying efficiency of the expanded clay sand. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a partial cross-sectional axonometric schematic diagram of a ceramsite sand drying device according to an embodiment of the utility model;

[0014] Figure 2 The ceramsite sand drying device of the utility model embodiment Figure 1 A zoomed in view of the node in the middle;

[0015] Figure 3 It is a partial cross-sectional front view schematic diagram of the drying of ceramsite sand according to an embodiment of the utility model;

[0016] Figure 4 It is an axonometric schematic diagram of a ceramsite sand drying device according to an embodiment of the utility model.

[0017] (1-drying cylinder, 2-support, 3-stirring shaft, 4-stirring blade, 5-electric heating body, 6-feeding port, 7-discharging port, 8-outer cylinder, 9-air outlet, 10-motor) 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 4 In the embodiment of the expanded clay sand drying device of the utility model shown, the expanded clay sand drying device includes a drying cylinder 1, both ends of the drying cylinder 1 are fixedly connected with a support 2, the support 2 is rotatably connected with a stirring shaft 3, the stirring shaft 3 rotates in the drying cylinder 1, a plurality of stirring blades 4 are fixedly connected to the stirring shaft 3, an electric heating body 5 is evenly wound on the drying cylinder 1, a feed port 6 is provided at one end of the drying cylinder 1, and a discharge port 7 is provided at the other end of the drying cylinder 1.

[0020] Specifically, the ceramsite sand to be dried is put into the drying drum 1 from the feed port 6, the electric heating body 5 is started for heating, the stirring shaft 3 is rotated, the stirring shaft 3 drives the stirring blade 4 to rotate, and when the stirring blade 4 rotates, the ceramsite sand flows toward the discharge port 7. The electric heating body 5 evenly wound on the surface of the drying drum 1 makes the temperature in the drying drum 1 uniform, and the stirring blade 4 stirs the ceramsite sand so that the ceramsite sand rolls and flows in the drying drum 1 and is evenly heated, which is conducive to improving the drying effect.

[0021] In one embodiment of the present application, preferably, an outer cylinder 8 is sleeved on the drying cylinder 1, and the outer cylinder 8 is fixedly connected to the drying cylinder 1. Insulating material is filled between the outer cylinder 8 and the electric heating body 5 to reduce heat loss of the electric heating body 5, which helps to reduce energy waste, lower the surface temperature of the device and ensure production safety.

[0022] In one embodiment of the present application, preferably, the stirring blade 4 is in a spirally inclined shape, and the stirring blade 4 is inclined toward the discharge port 7. The outer edge of the stirring blade 4 contacts the inner wall of the drying cylinder 1, and is used to drive the expanded clay sand to flow toward the discharge port 7 when the stirring blade 4 rotates. The tumbling effect of the expanded clay sand is increased during the flow process, so that the expanded clay sand is heated evenly, thereby improving the operating efficiency.

[0023] In one embodiment of the present application, preferably, adjacent stirring blades 4 are arranged in a staggered manner so that the ceramsite sand flowing down from adjacent stirring blades 4 falls into the scraping range of the next stirring blade 4 .

[0024] In one embodiment of the present application, preferably, an array of air outlet holes 9 are provided on the top of the drying cylinder 1, and the air outlet holes 9 are directly connected to the outside, which is beneficial for the water vapor generated by the drying of the expanded clay sand to be discharged from the drying cylinder 1, thereby reducing the humidity inside the drying cylinder 1.

[0025] In one embodiment of the present application, preferably, a motor 10 is fixedly connected to the support 2, and a driving shaft of the motor 10 is fixedly connected to the stirring shaft 3 for driving the stirring shaft 3 to rotate, and the rotation of the stirring shaft 3 drives the stirring blade 4 to rotate.

[0026] To sum up, the ceramsite sand drying device in the above-mentioned embodiment of the utility model, specifically, puts the ceramsite sand to be dried into the drying cylinder 1 from the feed port 6, starts the electric heating body 5 for heating, starts the motor 10 to drive the stirring shaft 3 to rotate, and the stirring shaft 3 drives the stirring blade 4 to rotate. When the stirring blade 4 rotates, the ceramsite sand moves upward along the inner wall of the drying cylinder 1 with the stirring blade 4, and when moving upward, the ceramsite sand flows in the inclined direction of the stirring blade 4, and slides off the stirring blade 4, and slides to the scraping range of the next stirring blade 4 until it moves to the position of the discharge port 7. When moving forward, it continuously rolls and mixes so that the ceramsite sand is evenly heated, and the water vapor generated by drying is discharged from the drying cylinder 1, and the stirring blade 4 at the position of the discharge port 7 pushes the scraped ceramsite sand out of the discharge port 7 each time it runs to the discharge port 7. The device utilizes the electric heating body 5 evenly wound on the surface of the drying cylinder 1 to make the temperature inside the drying cylinder 1 uniform, and the stirring blades 4 stir the ceramsite sand so that the ceramsite sand rolls and flows in the drying cylinder 1 and is evenly heated, which is beneficial to improving the drying effect.

[0027] 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 ceramsite sand drying device, characterized in that: It includes a drying cylinder, both ends of which are fixedly connected to supports, the supports are rotatably connected to a stirring shaft, the stirring shaft rotates in the drying cylinder, a plurality of stirring blades are fixedly connected to the stirring shaft, an electric heating body is evenly wound on the drying cylinder, a feed port is provided at one end of the drying cylinder, and a discharge port is provided at the other end of the drying cylinder.

2. The ceramsite sand drying device according to claim 1, characterized in that: An outer cylinder is sleeved on the drying cylinder, the outer cylinder is fixedly connected to the drying cylinder, and a heat insulating material is filled between the outer cylinder and the electric heating body.

3. The ceramsite sand drying device according to claim 1 is characterized in that: The stirring blade is in a spirally inclined shape, and the stirring blade is inclined toward the discharge port, and the outer edge of the stirring blade is in contact with the inner wall of the drying cylinder.

4. The ceramsite sand drying device according to claim 3 is characterized in that: Adjacent stirring blades are arranged in a staggered manner.

5. The ceramsite sand drying device according to claim 1 is characterized in that: The top of the drying cylinder is provided with air outlet holes arranged in an array, and the air outlet holes are directly connected to the outside.

6. The ceramsite sand drying device according to claim 1, characterized in that: A motor is fixedly connected to the support, and a driving shaft of the motor is fixedly connected to the stirring shaft.

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