System for drying materials by using steam

Abstract

A plurality of groups of annular coil pipes are arranged on the outer wall of a lump material bin, an air inlet and an air outlet of a single group of annular coil pipes are respectively communicated with a steam generator, a grating plate is arranged above a conical opening in the bottom of the lump material bin, and the grating plate penetrates through one side of the lump material bin to be connected with the lump material bin in a sliding mode. A hot air inlet is formed in one side of a conical opening in the bottom of the lump stock bin, and a gate valve is arranged on a conical discharging opening in the bottom of the lump stock bin. By utilizing the characteristics of large storage capacity and rapid heating of a block stock bin tank body, a large amount of hot air is introduced into the block stock bin tank body, an annular coil pipe is arranged outside the tank body, and materials stored in the tank body are heated by utilizing the characteristics of high temperature and continuous temperature supply of steam in the annular coil pipe; and hot and humid air carried out by the introduced hot air enters the block stock bin from the hot air inlet, so that the special effect of heating and drying the materials is achieved.

Description

Technical Field

[0001] This utility model relates to the field of material drying, and in particular to a system for drying materials using steam. Background Art

[0002] In the past, material drying processes used ton bags for material transfer. Generally, the ton bags were dried by steam or electric heating. After drying to a certain extent, they were transferred to other processes. During the drying process, the drying temperature should not be too high. If the temperature exceeds 100℃ and the drying time is long, the woven ton bags will become brittle and easily break during secondary transfer after drying. If the temperature is too low, the moisture between or inside the material will not evaporate easily, resulting in insufficient drying and failure to achieve the desired drying effect. Utility Model Content

[0003] The main purpose of this utility model is to provide a steam drying system for materials, which solves the problems of woven ton bags becoming brittle and easily damaged during secondary transfer after drying at temperatures exceeding 100°C for a long time; and insufficient drying and failure to achieve the desired drying effect when the temperature is too low, as the moisture between or inside the material does not easily evaporate.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: A material drying system using steam, wherein multiple sets of annular coils are provided on the outer wall of the block material silo, the air inlet and outlet of each set of annular coils are respectively connected to a steam generator, a grid plate is provided above the conical opening at the bottom of the block material silo, the grid plate passes through one side of the block material silo and is slidably connected to the block material silo, a hot air inlet is provided on one side of the conical opening at the bottom of the block material silo, and a gate valve is provided on the conical discharge port at the bottom of the block material silo.

[0005] In the preferred embodiment, the block silo is also fitted with an outer jacket, and an annular coil is installed between the outer jacket and the outer wall of the block silo.

[0006] In the preferred embodiment, the gap between the outer jacket and the outer wall of the block silo is filled with thermal insulation material.

[0007] In the preferred embodiment, a hydraulic cylinder is also provided on one side of the block hopper, and the end of the hydraulic cylinder telescopic rod is connected to the grating plate.

[0008] In the preferred embodiment, the hot air inlet is tilted upwards.

[0009] In the preferred embodiment, the air inlet of the hot air inlet is covered with a cover plate with an arc-shaped structure.

[0010] In the preferred embodiment, one side of the top of the block silo is connected to the block material conveying equipment, and the other side is connected to the dust removal equipment.

[0011] This invention provides a steam-based material drying system. Taking advantage of the large storage capacity and rapid heating of the block material silo, a large amount of hot air is introduced into the silo, and annular coils are arranged on the outside of the silo. The high temperature and continuous heating of the steam in the annular coils heat the materials stored in the silo. The hot air introduced carries away the humid and hot air from the hot air inlet into the block material silo, achieving the special effect of heating and drying the materials. Attached Figure Description

[0012] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0013] Figure 1 This is the overall system structure diagram of this utility model;

[0014] Figure 2 This is a structural diagram of the grating plate of this utility model inside the block silo;

[0015] Figure 3 This is a structural diagram of the grating plate after it has been removed.

[0016] In the diagram: 1. Block material bin; 2. Annular coil; 3. Outer jacket; 4. Air outlet; 5. Air inlet; 6. Hydraulic cylinder; 7. Hot air inlet; 8. Cover plate; 9. Discharge port; 10. Block material conveying equipment; 11. Dust removal equipment; 12. Grating plate. DETAILED DESCRIPTION

[0017] like Figures 1-3 As shown, a material drying system using steam is described. The outer wall of the block material silo 1 is provided with multiple sets of annular coils 2. The air inlet 5 and air outlet 4 of each set of annular coils 2 are respectively connected to a steam generator. A grid plate 12 is provided above the conical opening at the bottom of the block material silo 1. The grid plate 12 passes through one side of the block material silo 1 and is slidably connected to the block material silo 1. A hot air inlet 7 is provided on one side of the conical opening at the bottom of the block material silo 1. A gate valve is provided on the conical discharge port 9 at the bottom of the block material silo 1.

[0018] Lump materials fall into the lump material hopper 1 through the feed inlet at the top of the tank. Based on the characteristics of the lump material, the bottom grating plate 12 aids in drying, and the gaps between the lumps facilitate hot air flow. Taking advantage of the good thermal performance of the iron tank, annular coils 2 are arranged on its exterior to allow steam to be introduced for heating. Through close contact, heat is transferred to the material to achieve preliminary drying, which can improve the steam temperature increase effect. Hot air inlet 7 introduces hot air, disturbing the air and heat transfer between the material and the humid air, which then passes through a dust removal duct to the dust removal equipment 11 for dust removal.

[0019] In the preferred embodiment, the block material hopper 1 is further fitted with an outer jacket 3, and an annular coil 2 is disposed between the outer jacket 3 and the outer wall of the block material hopper 1. This structure can enhance heat preservation and transfer. The outer jacket 3 prevents external heat loss, and the annular coil 2 generates heat that is transferred to the material in the block material hopper 1 more efficiently, improving drying efficiency and energy saving. In cold environments, it can reduce the amount of steam used to maintain the drying temperature.

[0020] In the preferred embodiment, the gap between the outer jacket 3 and the outer wall of the block silo 1 is filled with thermal insulation material. This further reduces heat loss, stabilizes the internal temperature field of the block silo 1, makes the material heated more evenly, avoids uneven drying due to local overheating or failure to reach the required temperature zone, and ensures stable product quality. For example, it allows for precise temperature control for temperature-sensitive materials.

[0021] In the preferred embodiment, a hydraulic cylinder 6 is also provided on one side of the block material hopper 1, and the end of the extension rod of the hydraulic cylinder 6 is connected to the grid plate 12. This facilitates the adjustment of the position of the grid plate 12 according to the drying process. In the early stage of drying, the height of the grid plate 12 is adjusted to control the material accumulation thickness and ventilation volume; after drying, the grid plate 12 is pulled out to help the material be discharged quickly, thereby improving production efficiency and equipment turnover rate.

[0022] In the preferred configuration, the hot air inlet 7 is tilted upwards. This upward tilt guides the hot air to swirl upwards along the chamber wall, increasing the residence time of the heated air within the chamber and the contact area with the material. This enhances heat exchange, improves drying uniformity, prevents localized dampness in the material, and ensures overall drying quality, making it particularly suitable for large particles or high-density materials.

[0023] In the preferred embodiment, the air inlet 7 is covered by an arc-shaped cover plate 8. The arc-shaped cover plate 8 optimizes the flow direction of hot air entering the chamber, reduces resistance and energy loss, ensures even and gentle entry of hot air, prevents localized strong winds from disrupting material distribution and causing drying imbalance, improves drying stability and efficiency, and ensures stable heating of the material. It also prevents material from entering the interior of the hot air inlet 7.

[0024] In the preferred embodiment, one side of the top of the block silo 1 is connected to the block conveying equipment 10, and the other side is connected to the dust removal equipment 11.

[0025] Blocky materials fall freely into the block material silo 1 through the feed inlet at the top of the tank. Due to the special nature of the blocky material, the bottom grating plate 12 of the tank facilitates the drying of the blocky material inside the block material silo 1. A block material conveying device 10 is connected to one side of the top of the block material silo 1, and a dust removal device 11 is connected to the other side. This ensures continuous material conveying into the silo for drying and timely removal of hot and humid air for dust removal, maintaining stable operation of the drying system, maintaining a good working environment inside the silo, preventing the accumulation of heat and moisture from affecting drying and equipment lifespan, and improving overall operational continuity and reliability.

[0026] Due to the special nature of the blocks, there are gaps between them, which facilitates the flow of hot air through the gaps between the blocks.

[0027] Based on the excellent manufacturing performance and good heat conduction or heat radiation properties of the iron tank, several sets of annular coils 2 are evenly arranged on the outside of the block material silo 1. Steam is introduced into the annular coils 2 to raise their temperature. By utilizing the tight connection between the annular coils 2 and the iron tank, heat is gradually transferred to the material inside the tank, achieving the initial effect of heating and drying the material. The amount of steam used for heating is not limited. To improve the drying effect, the temperature of the steam accompanying the pipes can be increased.

[0028] Hot air is introduced into the block silo 1 through the hot air inlet 7. The hot air disturbs the air flow or heat transfer inside the silo, and the dried hot and humid air is led out through the dust removal duct to the dust removal equipment 11 for dust removal treatment.

[0029] The above embodiments are merely preferred technical solutions of this utility model and should not be considered as limitations on this utility model. The protection scope of this utility model should be the technical solution described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the protection scope of this utility model.

Claims

1. A system for drying materials using steam, characterized in that: The outer wall of the block silo (1) is provided with multiple sets of annular coils (2). The air inlet (5) and air outlet (4) of each set of annular coils (2) are connected to the steam generator respectively. A grid plate (12) is provided above the conical opening at the bottom of the block silo (1). The grid plate (12) passes through one side of the block silo (1) and is slidably connected to the block silo (1). A hot air inlet (7) is provided on one side of the conical opening at the bottom of the block silo (1). A gate valve is provided on the conical discharge port (9) at the bottom of the block silo (1).

2. The material drying system using steam according to claim 1, characterized in that: The block silo (1) is also fitted with an outer jacket (3), and an annular coil (2) is set between the outer jacket (3) and the outer wall of the block silo (1).

3. The material drying system using steam according to claim 2, characterized in that: The gap between the outer jacket (3) and the outer wall of the block silo (1) is filled with thermal insulation material.

4. The material drying system using steam according to claim 1, characterized in that: A hydraulic cylinder (6) is also provided on one side of the block silo (1), and the end of the extension rod of the hydraulic cylinder (6) is connected to the grid plate (12).

5. The material drying system using steam according to claim 1, characterized in that: The hot air inlet (7) is tilted upwards.

6. The material drying system using steam according to claim 5, characterized in that: The hot air inlet (7) has an arc-shaped cover plate (8) covering the internal air inlet.

7. The material drying system using steam according to claim 1, characterized in that: The top side of the block silo (1) is connected to the block conveying equipment (10), and the other side is connected to the dust removal equipment (11).

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