Solar drying device for magnesium hydroxide powder

Abstract

A solar drying device for magnesium hydroxide powder comprises a dryer (12), a cyclone separator (13) and a solar heat collector (3). The solar heat collector comprises a solar heat collecting plate, a heat collector bottom plate (4) and a hot air pipeline (5). One end of the solar heat collector is connected with a hot air pipeline, and the other end of the solar heat collector is provided with an air inlet (1) which is provided with a heat insulation door (2); the hot air pipeline is of a double-wall round pipe structure, the inner layer is composed of a heat absorbing plate (7) and a heat storage material (8), and the outer layer is a heat insulating plate (6); the solar heat collector enables hot air to enter the dryer from the bottom end of the dryer through a hot air pipeline. The dryer is of a cylindrical vertical structure, the conical top is connected with the cyclone separator, a feeding port (11) is formed in the side edge of the lower portion of the dryer, and a stirring machine (10) is installed at the bottom of the dryer and driven by a scattering motor (9). According to the utility model, the magnesium hydroxide powder is dried by fully utilizing solar energy, so that the dependence on conventional energy sources and the pollution to the environment are reduced.

Description

Technical Field

[0001] The utility model relates to a solar energy drying device for magnesium hydroxide powder, belonging to the technical field of material drying. Background Art

[0002] With the continuous progress of society, people's requirements for new materials are constantly increasing, and the development trend of flame retardants is moving towards environmental protection, low toxicity and low smoke, high efficiency and multifunctionality.

[0003] Magnesium hydroxide, with its superior flame retardant properties, fully meets the needs of today's flame retardants to develop towards environmentally friendly ones. It is an inorganic non-halogen flame retardant that is harmless to human health and the environment. Magnesium hydroxide has multiple properties such as flame retardancy, smoke suppression, drip resistance, and filling. It has a wide range of applications in flame retardancy, environmental protection, medicine, and ceramics, and has penetrated into various fields of the national economy.

[0004] The production process of magnesium hydroxide inevitably involves powder drying. Conventional drying heat sources generally come from steam, thermal oil, electric heating, etc., which consume a lot of resources and are not environmentally friendly. It is an urgent need to seek a drying method that reduces conventional energy demand and is pollution-free to the environment. Summary of the invention

[0005] The utility model aims to disclose a magnesium hydroxide powder solar drying device in view of the problems of high energy consumption and environmental unfriendliness in the existing magnesium hydroxide powder drying.

[0006] The technical solution implemented by the utility model is as follows: a solar drying device for magnesium hydroxide powder, comprising a dryer, a cyclone separator and a solar collector.

[0007] The solar collector conveys hot air from the air inlet at the bottom of the dryer into the dryer through a pipe attached to the length direction of the dryer; the channel formed by the solar collector and the collector bottom plate is connected to the hot air pipe, the solar collector absorbs a large amount of heat, and then sends it to the bottom of the dryer through the hot air channel and enters the dryer; the dryer is a cylindrical vertical structure, the conical top is connected to the cyclone separator through a pipe, a feed port is provided on the lower side of the dryer, a mixer is installed in the center of the bottom of the dryer, and the mixer blades extend deep into the lower part of the dryer.

[0008] The solar collector comprises a solar collector panel, a collector bottom plate, a hot air duct and a solar tracking device; the solar collector panel and the collector bottom plate are both rectangular plate structures, the solar collector panel is on the sunny side, and together with the collector bottom plate, forms a rectangular solar collector panel box structure, along the length direction of the solar collector panel, one end is connected to the hot air duct, the other end is provided with an air inlet, and an insulating door is arranged at the air inlet; the hot air duct is a double-walled circular tube structure, the inner layer is composed of a heat absorbing plate and a heat storage material, and the outer layer is a heat insulating plate; the solar collector panel absorbs a large amount of heat, and then sends it to the bottom of the dryer through the hot air channel to enter the dryer.

[0009] The cyclone separator provides negative pressure for the dryer. Under the effect of the negative pressure, the air inlet of the solar collector inhales air to exchange heat with the solar collector panel, and the air becomes hot air and enters the hot air channel.

[0010] The dryer is a cylindrical vertical structure with an outer shell provided with a heat insulation layer; the conical top is connected to the cyclone separator through a pipeline, a feed port is provided on the lower side of the dryer, and a mixer is installed in the center of the bottom of the dryer, and the mixer blades extend deep into the lower part of the dryer.

[0011] The mixer is driven by a breaking motor; when the breaking motor is working, it drives the mixer to rotate, and the mixer blades break up the materials fed into the feed port, so that the materials are fully contacted and dried with the hot air fed into the hot air channel.

[0012] The beneficial effect of the utility model is that the utility model fully utilizes solar energy resources when drying magnesium hydroxide powder, reducing dependence on conventional energy; solar energy is a clean energy, and the use of solar energy is very environmentally friendly, reducing the pollution of conventional energy to the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the structure of the solar drying device for magnesium hydroxide powder of the utility model;

[0014] Figure 2 This is an enlarged schematic diagram of the AA hot air channel;

[0015] In the figure, 1 is the air inlet; 2 is the heat-insulating door; 3 is the solar collector; 4 is the collector bottom plate; 5 is the hot air channel; 6 is the heat-insulating plate; 7 is the heat-absorbing plate; 8 is the heat storage material; 9 is the dispersing motor; 10 is the mixer; 11 is the feed port; 12 is the dryer; and 13 is the cyclone separator. DETAILED DESCRIPTION

[0016] The specific implementation of the utility model is shown in the accompanying drawings.

[0017] The present embodiment provides a solar drying device for magnesium hydroxide powder, comprising a dryer 12 , a cyclone separator 13 and a solar collector 3 .

[0018] The solar collector of this embodiment includes a solar collector panel, a collector bottom plate 4, a hot air duct 5 and a solar tracking device; the solar collector panel and the collector bottom plate are both rectangular plate structures, the solar collector panel is on the sunny side, and together with the collector bottom plate, forms a rectangular solar collector panel box structure, along the length direction of the solar collector panel, one end is connected to the hot air duct 5, the other end is provided with an air inlet 1, and an insulating door 2 is arranged at the air inlet; the hot air duct 5 is a double-walled circular tube structure, the inner layer is composed of a heat absorbing plate 7 and a heat storage material 8, and the outer layer is a heat insulating plate 6, the inner and outer layers are integrated to ensure that the hot air loss in the hot air duct 5 is minimized; the solar collector panel absorbs a large amount of heat, and then sends it to the bottom of the dryer through the hot air channel 5 to enter the dryer 12.

[0019] The solar collector 3 of this embodiment allows hot air to enter the dryer from the air inlet at the bottom of the dryer through a pipe attached to the length direction of the dryer; the channel formed by the solar collector and the collector bottom plate is connected to the hot air pipe, and the solar collector absorbs a large amount of heat, which is then sent to the bottom of the dryer through the hot air channel 5 and enters the dryer 12; the dryer is a cylindrical vertical structure, and the conical top is connected to the cyclone separator 13 through a pipe. A feed port 11 is provided on the side of the lower part of the dryer, and a mixer 10 is installed in the center of the bottom of the dryer, and the mixer blades penetrate into the lower part of the dryer 12. The mixer 10 is driven by a scattering motor 9; when the scattering motor 9 is working, it drives the mixer 10 to rotate, and the mixer blades scatter the materials sent in from the feed port, so that the materials are fully contacted and dried with the hot air sent in from the hot air channel.

[0020] A universal joint is provided between the solar collector 3 and the hot air passage in this embodiment, and the pipes connected to the universal joint can rotate relative to each other; the solar collector is controlled to rotate by the solar tracking device, so that one end of the solar collector panel is always facing the sunlight to receive the sun's heat.

[0021] The cyclone separator of this embodiment provides negative pressure for the dryer 12. Under the action of negative pressure, the air inlet 1 of the solar collector inhales air and exchanges heat with the solar heat energy absorbed by the solar collector panel, and becomes hot air that enters the hot air channel 5, and then enters the dryer 12 through the hot air channel 5.

Claims

1. A magnesium hydroxide powder solar drying device, comprising a dryer and a cyclone separator, characterized in that: The device also includes a solar collector; the solar collector draws hot air from the air inlet at the bottom of the dryer into the dryer through a hot air duct; the dryer is a cylindrical vertical structure, the conical top is connected to the cyclone separator through a pipeline, a feed port is provided on the side of the lower part of the dryer, a mixer is installed in the center of the bottom of the dryer, and the mixer blades extend deep into the lower part of the dryer.

2. A magnesium hydroxide powder solar drying device according to claim 1, characterized in that, The solar collector comprises a solar collector plate, a collector bottom plate and a hot air duct; both the solar collector plate and the collector bottom plate are rectangular plate structures, the solar collector plate is on the sunny side, and together with the collector bottom plate, forms a rectangular solar collector plate box structure, along the length direction of the solar collector plate, one end is connected to the hot air duct, the other end is provided with an air inlet, and an insulating door is arranged at the air inlet; the hot air duct is a double-walled circular tube structure, the inner layer is composed of a heat absorbing plate and a heat storage material, and the outer layer is a heat insulating plate; the solar collector plate absorbs a large amount of heat, and then sends it to the bottom of the dryer through the hot air channel to enter the dryer.

3. A magnesium hydroxide powder solar drying device according to claim 1, characterized in that, The cyclone separator provides negative pressure for the dryer. Under the effect of the negative pressure, the air inlet of the solar collector inhales air to exchange heat with the solar collector panel, and the air becomes hot air and enters the hot air channel.

4. A magnesium hydroxide powder solar drying device according to claim 1, characterized in that, The dryer is a cylindrical vertical structure, the conical top is connected to the cyclone separator through a pipeline, a feed port is arranged on the side of the lower part of the dryer, a mixer is arranged in the center of the bottom of the dryer, and the mixer blades are deeply inserted into the lower part of the dryer.

5. A magnesium hydroxide powder solar drying device according to claim 4, characterized in that, The mixer is driven by a breaking motor; when the breaking motor is working, it drives the mixer to rotate, and the mixer blades break up the materials fed into the feed port, so that the materials are fully contacted and dried with the hot air fed into the hot air channel.

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