Continuous drying device for building block production

Abstract

The utility model discloses a continuous drying device for building block production, including conveying base, be equipped with by motor drive's transmission belt on the conveying base, be equipped with building block placing bracket above transmission belt, the upper part of conveying base is erected with drying -machine shell, be equipped with electric heating module on the upper part of drying -machine shell, still include pre -drying unit, pre -drying unit includes the hot -blast preheating machine shell of being located in the front of drying -machine shell, the lower part of both sides of hot -blast preheating machine shell is fixedly connected with the positioning frame of being erected on conveying base, the upper part of hot -blast preheating machine shell is connected with fan no.

Description

Technical Field

[0001] This utility model belongs to the field of building block production technology, specifically referring to a continuous drying device for building block production. Background Technology

[0002] As is well known, existing building blocks are block-shaped building products that are larger than clay bricks. Their raw materials are widely available and come in many varieties. They can be sourced locally and are classified by material into concrete, cement mortar, aerated concrete, fly ash silicate, coal gangue, artificial ceramsite, slag waste, and other blocks. The production process of building blocks requires drying and shaping.

[0003] In existing building block production, the blocks are dried in the same drying zone from feeding to discharging, with fixed temperature, wind speed and residence time. Because the initial moisture content of building blocks is high, if high temperature is used directly for single-stage drying, the evaporation rate of moisture on the block surface is much greater than the diffusion rate of moisture inside, which easily forms a moisture gradient of dry outside and wet inside, resulting in poor drying uniformity and easy to cause cracking and deformation of blocks.

[0004] Furthermore, the lack of a cooling process after material discharge means that the high-temperature blocks are in direct contact with room-temperature air, causing a sudden drop in surface temperature and making them prone to secondary cracking. Utility Model Content

[0005] The technical problem this invention aims to solve is that the continuous drying device for building block production lacks pretreatment function, which affects the drying quality and makes the discharged material prone to secondary cracking.

[0006] The technical solution adopted by this utility model is as follows:

[0007] This utility model discloses a continuous drying device for the production of building blocks, including a conveyor base, a transmission belt driven by a motor on the conveyor base, a building block placement bracket above the transmission belt, a drying shell mounted on the upper part of the conveyor base, an electric heating module on the upper part of the drying shell, and a pre-drying unit. The pre-drying unit includes a hot air preheating shell located in front of the drying shell, positioning frames mounted on the conveyor base are fixed to the lower parts of both sides of the hot air preheating shell, and a fan is connected to the upper part of the hot air preheating shell.

[0008] Furthermore, the front and rear sides of the dryer shell are provided with openings through which the building block placement bracket can pass, and the lower parts of both sides of the dryer shell are provided with ventilation shells. Ventilation openings are provided on the ventilation shells, and the lower part of the ventilation shells is connected to a waste heat recovery shell located at the bottom of the conveying base. The building block placement brackets are provided with through grooves on both sides.

[0009] Furthermore, a pump is connected to the upper part of the hot air preheating unit casing, and an air inlet pipe is connected to the pump. The other end of the air inlet pipe is connected to the waste heat recovery unit casing.

[0010] Furthermore, a cooling seat is provided on the rear side of the conveying base, and a low-temperature hot air blower housing is mounted on the upper part of the cooling seat. An electric heating wire is provided inside the low-temperature hot air blower housing, and a second fan passes through the low-temperature hot air blower housing.

[0011] Furthermore, a roller is rotatably mounted on the cooling base. The roller has raised anti-slip textures on its surface and is hollow inside. A micro motor for driving the roller is mounted on one side of the cooling base, and a cooling water injection housing is fixedly connected to the other side of the cooling base. The roller is rotatably connected to the cooling water injection housing. A water inlet is provided on the cooling water injection housing, and a drain valve is provided at the bottom of the cooling water injection housing.

[0012] The beneficial effects of this utility model by adopting the above structure are as follows:

[0013] 1. A pre-drying unit is used to pre-treat the building blocks before high-temperature drying, thereby reducing the initial moisture content of the building blocks and avoiding a large difference between the moisture evaporation rate and the internal moisture diffusion rate, which would affect the drying quality.

[0014] 2. Cooling treatment is carried out during material discharge, using hot air to reduce temperature and avoid secondary cracks caused by excessive temperature difference. The blocks are cooled evenly by slowly rotating the roller. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0016] Figure 2 This is a schematic diagram of the overall structure from another perspective of an embodiment of the present utility model;

[0017] Figure 3 A schematic diagram of a structure for placing brackets for building blocks;

[0018] Figure 4 This is a partial structural diagram of the dryer casing.

[0019] The components include: 1. Conveying base; 11. Transmission belt; 12. Building block placement bracket; 13. Dryer shell; 14. Electric heating module; 2. Hot air preheating shell; 21. Positioning frame; 22. Fan 1; 3. Opening; 31. Ventilation fan shell; 32. Ventilation port; 33. Waste heat recovery shell; 34. Through slot; 4. Pump; 41. Air inlet pipe; 5. Cooling base; 51. Low temperature hot air fan shell; 52. Fan 2; 6. Drum; 61. Micro motor; 62. Cooling water injection shell; 63. Water inlet; 64. Drain valve. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0021] It should be noted that the terms “front,” “back,” “left,” “right,” “up,” and “down” used in the following description refer to the directions shown in the attached diagram, while the terms “inside” and “outside” refer to the directions toward or away from the geometric center of a specific component, respectively.

[0022] Example 1:

[0023] like Figure 1 As shown, the present invention proposes a continuous drying device for the production of building blocks, including a conveying base 1, a transmission belt 11 driven by a motor on the conveying base 1, a building block placement bracket 12 above the transmission belt 11, a drying chamber 13 mounted on the upper part of the conveying base 1, an electric heating module 14 mounted on the upper part of the drying chamber 13, and a pre-drying unit, the pre-drying unit including a hot air preheating chamber 2 located in front of the drying chamber 13, positioning frames 21 fixedly connected to the lower parts of both sides of the hot air preheating chamber 2 mounted on the conveying base 1, and a fan 22 connected to the upper part of the hot air preheating chamber 2.

[0024] By placing building blocks into the building block placement bracket 12 and conveying them via the transmission belt 11, they are preheated below the hot air preheating machine casing 2 and then conveyed to the drying machine casing 13 for thorough drying. The positioning frame 21 guides the conveying of the building block placement bracket 12. It should be noted that low-temperature pre-drying reduces the cracking rate and also has the advantage of reduced energy consumption.

[0025] like Figure 2 , 3 As shown in Figure 4, the front and rear sides of the dryer shell 13 are provided with openings 3 for the building block placement bracket 12 to pass through. The lower parts of both sides of the dryer shell 13 are provided with ventilation shells 31, and ventilation openings 32 are provided on the ventilation shells 31. The lower part of the ventilation shells 31 is connected to the waste heat recovery shell 33 located at the bottom of the conveying base 1. The building block placement bracket 12 is provided with through grooves 34 on both sides. The upper part of the hot air preheating shell 2 is connected to a pump 4, and the pump 4 is connected to an air inlet pipe 41. The other end of the air inlet pipe 41 is connected to the waste heat recovery shell 33.

[0026] When the building block placement bracket 12 is drying inside the dryer shell 13, hot air enters from the vent 32, passes through the fan shell 31 and enters the waste heat recovery shell 33 for collection. Under the operation of the pump 4, the hot air is drawn out from the air inlet pipe 41 and sent into the hot air preheating shell 2 for waste heat utilization, thereby reducing heat loss.

[0027] Example 2:

[0028] like Figure 2 As shown, a cooling seat 5 is provided on the rear side of the conveying base 1, and a low-temperature hot air fan housing 51 is mounted on the upper part of the cooling seat 5. An electric heating wire is provided inside the low-temperature hot air fan housing 51, and a fan 52 passes through the low-temperature hot air fan housing 51.

[0029] By operating the second fan 52, the low-temperature hot air inside the low-temperature hot air fan casing 51 is blown out, which cools the dried high-temperature blocks in a step-by-step manner, avoiding the high-temperature blocks from being cooled directly by room temperature air, which could cause secondary cracks.

[0030] A roller 6 is rotatably mounted on the cooling base 5. The surface of the roller 6 is provided with raised anti-slip textures and is hollow inside. A micro motor 61 for driving the roller 6 is provided on one side of the cooling base 5. A cooling water injection housing 62 is fixedly connected to the other side of the cooling base 5. The roller 6 is rotatably connected to the cooling water injection housing 62. A water inlet 63 is provided on the cooling water injection housing 62. A drain valve 64 is provided at the bottom of the cooling water injection housing 62.

[0031] The roller 6 is driven to rotate by the micro motor 61. The roller 6 causes the block to roll slowly, so that the side and inner wall of the hole of the block can be in contact with the cooling air. The inside of the roller 6 is hollow. Low temperature cooling water is introduced into the casing 62 through the cooling water injection. The roller 6 indirectly exchanges heat with the block through the wall of the roller, realizing dual cooling of external air cooling and internal water cooling, and solving the problem of dead corners in block cooling.

[0032] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

[0033] Unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

Claims

1. A continuous drying device for building block production, comprising a conveyor base (1), a drive belt (11) driven by a motor is provided on the conveyor base (1), a building block placement bracket (12) is provided above the drive belt (11), a dryer shell (13) is mounted on the upper part of the conveyor base (1), and an electric heating module (14) is provided on the upper part of the dryer shell (13), characterized in that: It also includes a pre-drying unit, which includes a hot air preheating housing (2) located in front of the dryer housing (13). The lower parts of both sides of the hot air preheating housing (2) are fixed with positioning frames (21) mounted on the conveying base (1), and the upper part of the hot air preheating housing (2) is connected to a fan (22).

2. The continuous drying device for building block production according to claim 1, characterized in that: The dryer shell (13) has openings (3) on the front and rear sides for the building block placement bracket (12) to pass through. The lower part of both sides of the dryer shell (13) is provided with a ventilation shell (31). The ventilation shell (31) is provided with a ventilation opening (32). The lower part of the ventilation shell (31) is connected to a waste heat recovery shell (33) located at the bottom of the conveying base (1). The building block placement bracket (12) is provided with through grooves (34) on both sides.

3. The continuous drying device for building block production according to claim 2, characterized in that: The upper part of the hot air preheating housing (2) is connected to a pump (4), and the pump (4) is connected to an air inlet pipe (41). The other end of the air inlet pipe (41) is connected to the waste heat recovery housing (33).

4. The continuous drying device for building block production according to claim 1, characterized in that: The rear side of the conveying base (1) is provided with a cooling seat (5), and a low temperature hot air blower housing (51) is mounted on the upper part of the cooling seat (5). The low temperature hot air blower housing (51) is provided with an electric heating wire, and a second fan (52) runs through the low temperature hot air blower housing (51).

5. A continuous drying device for building block production according to claim 4, characterized in that: A roller (6) is rotatably mounted on the cooling seat (5). The roller (6) has raised anti-slip textures on its surface and is hollow inside. A micro motor (61) for driving the roller (6) is provided on one side of the cooling seat (5). A cooling water injection housing (62) is fixedly connected to the other side of the cooling seat (5). The roller (6) is rotatably connected to the cooling water injection housing (62). A water inlet (63) is provided on the cooling water injection housing (62). A drain valve (64) is provided at the bottom of the cooling water injection housing (62).

Images