Barium sulfate drum dryer

Abstract

The novel barium sulfate drum drying device is composed of a hopper, a feeding auger, a drying mechanism, a discharging auger and a packaging mechanism, wherein the hopper stores wet barium sulfate to be dried, the discharge port of the hopper is connected with the feeding auger, the feeding auger conveys the wet barium sulfate to the feeding port of the drying mechanism, the wet barium sulfate is dried in the drying mechanism, a discharge port is arranged at the end of the drying mechanism opposite to the feeding port, and the dried barium sulfate is sent to the packaging mechanism for packaging through the discharging auger. The drying mechanism adopts a drying mode of sleeve and screen cylinder combination, has high drying efficiency and can process a large amount of drying materials at a time.

Description

Technical Field

[0001] This invention relates to barium sulfate production, and in particular to a barium sulfate rotary drying apparatus. Background Technology

[0002] In the production of barium sulfate, drying is required. In the prior art, CN222783851U discloses a cold-air-proof sealing device for a drying drum in barium sulfate production. This device, using a sealed heating device, reduces energy consumption. During barium sulfate production, the drying drum requires significant energy to maintain the temperature and humidity inside. If the feed inlet lacks windproof measures, wind will directly enter the drying drum, carrying away a large amount of heat and resulting in energy waste. The windproof function at the feed inlet reduces heat loss due to wind, thereby reducing energy consumption. Utility Model Content

[0003] To address the shortcomings of existing technologies, this invention provides a barium sulfate rotary drying device.

[0004] A barium sulfate rotary drying device comprises a hopper, a feeding auger, a drying mechanism, a discharging auger, and a packaging mechanism. The hopper stores wet barium sulfate to be dried. The discharge port of the hopper is connected to the feeding auger, which transports the wet barium sulfate to the inlet of the drying mechanism. The wet barium sulfate is dried in the drying mechanism. An outlet is provided at one end of the drying mechanism opposite to the inlet. The dried barium sulfate is then conveyed to the packaging mechanism for packaging via the discharging auger. The drying mechanism includes a drying rotary drum. An air inlet and an air outlet are respectively provided at both ends. The air inlet is connected to a flue gas filter through an air intake manifold. The flue gas filter is used to filter high-temperature flue gas. A blower is connected to the flue through an air intake pipe. The blower draws high-temperature flue gas from the flue. After being filtered by the flue gas filter, the high-temperature flue gas enters the drying drum and exchanges heat with the wet barium sulfate in the drying drum to dry it. The flue gas after heat exchange is discharged from the air outlet. The air outlet is connected to an exhaust fan, which is connected to the flue through an exhaust pipe.

[0005] Optionally, the drying mechanism is driven by a motor to rotate around an axis; the exhaust duct is located above the intake duct; the drying drum has an outer drum and an inner drum disposed within the outer drum, and a shock-absorbing support structure is provided between the inner drum and the outer drum; multiple support slide rails are also provided between the outer drum and the inner drum, and the inner drum can slide along the support slide rails; a sieve drum is provided in the inner drum, and the sieve drum and the inner drum form a sleeve structure, and the sieve drum is provided with filter holes; an exhaust pipe is provided at one end of the inner drum, and the water vapor generated during drying is discharged from the exhaust pipe through the sieve drum; the multiple support slide rails are evenly distributed circumferentially between the outer drum and the inner drum; the support slide rail includes a support block fixedly connected to the outer wall of the inner drum and a sliding groove located on the inner wall of the outer drum, and the support block is located in the sliding groove; when the inner drum is deformed by heat, the shock-absorbing support structure provides reverse elastic support to the inner drum.

[0006] The beneficial effects of this invention are as follows: This new barium sulfate drying system utilizes flue gas for drying, which improves energy efficiency and purifies the flue gas; the drying mechanism adopts a combined drying method of sleeve and screen cylinder, which has high drying efficiency and can process a large amount of drying material at one time; the elastic support structure combined with the support slide rail overcomes the problem of inconsistent thermal expansion coefficients and improves the overall operational stability. Attached Figure Description

[0007] Figure 1 This is a schematic diagram of a barium sulfate rotary drying device;

[0008] Figure 2 This is a schematic diagram of the drying mechanism;

[0009] Figure 3A This is a schematic diagram of the drying drum structure;

[0010] Figure 3B This is a schematic diagram of the structure supporting the slider. Detailed Implementation

[0011] To make the above-mentioned objects, features, and advantages of this invention more apparent and understandable, the specific embodiments of this invention will be described in detail below with reference to the accompanying drawings, making the above-mentioned and other objects, features, and advantages of this invention clearer. In all the drawings, the same reference numerals indicate the same parts. The drawings are not intentionally drawn to scale; the focus is on illustrating the main idea of ​​this invention.

[0012] See Figure 1This novel barium sulfate rotary drying device comprises a hopper 1, a feeding auger 2, a drying mechanism 5, a discharging auger 8, and a packaging mechanism 9. The hopper 1 stores the wet barium sulfate to be dried. The discharge port of the hopper 1 is connected to the feeding auger 2, which transports the wet barium sulfate to the inlet 3 of the drying mechanism 5, where it is dried. The drying mechanism 5 can be driven by a drive mechanism 4, for example, by a motor to rotate around a shaft 7. An outlet 6 is provided at the end of the drying mechanism 5 opposite to the inlet 3. The dried barium sulfate is then conveyed to the packaging mechanism 9 via the discharging auger 8 for packaging.

[0013] The following is combined Figure 2 The drying mechanism 5 will be described in further detail. The drying mechanism 5 of this novel device includes a drying drum 5.1. The drying drum 5.1 has an air inlet 5.10 and an air outlet 5.9 at its two ends. The air inlet 5.10 is connected to a flue gas filter 5.4 via an air intake manifold 5.2. The flue gas filter 5.4 filters the high-temperature flue gas, thus enabling the drying of wet barium sulfate. A blower 5.6 is connected to a flue 5.5 via an intake pipe 5.11. The blower 5.6 draws in the high-temperature flue gas from the flue 5.5. After being filtered by the flue gas filter 5.4 to remove dust and other contaminants, the high-temperature flue gas enters the drying drum 5.1 and exchanges heat with the wet barium sulfate inside, drying it. The flue gas after heat exchange is discharged from the air outlet 5.9, which is connected to an exhaust fan 5.7. The exhaust fan 5.7 is connected to the flue 5.5 via an exhaust pipe 5.8.

[0014] In this invention, the exhaust duct 5.8 is located above the intake duct 5.11. This ensures that the cold air discharged from the exhaust duct 5.8 does not lower the temperature of the flue gas or affect the temperature of the flue gas entering the intake duct 5.11, thus effectively utilizing the heat of the flue gas duct. In this invention, the flue gas is treated by the filter 5.4 before being discharged through the flue 5.5. This not only achieves heat recovery and utilization of the flue gas but also purifies the flue gas.

[0015] See also Figure 3A and Figure 3BThe drying drum 5.1 adopts a sleeve design, comprising an outer drum 5.11 and an inner drum 5.12 housed within the outer drum 5.11. A shock-absorbing support structure 5.14, such as a tension spring, is provided between the inner drum 5.12 and the outer drum 5.11. A support slide rail 5.15 is also provided between the outer drum 5.11 and the inner drum 5.12, allowing the inner drum 5.12 to slide along the support slide rail 5.15. When the outer drum 5.11 rotates, the inner drum 5.12 rotates together with the outer drum 5.11. A sieve cylinder 5.13 is installed within the inner drum 5.12, forming a sleeve structure with the inner drum 5.12. The sieve cylinder 5.13 has filter holes. An exhaust pipe 5.16 is provided at one end of the inner drum 5.12, through which the water vapor generated during drying is discharged.

[0016] Multiple support slide rails 5.15 are evenly distributed circumferentially between the outer cylinder 5.11 and the inner cylinder 5.12. Each support slide rail 5.15 includes a support block 5.151 fixedly connected to the outer wall of the inner cylinder 5.12 and a groove 5.152 located on the inner wall of the outer cylinder 5.11, with the support block 5.151 situated within the groove 5.152. During the drying process, due to the differences in wall thickness and material between the inner cylinder 5.12 and the outer cylinder 5.11, and the presence of barium sulfate to be dried in the inner cylinder 5.12, the coefficients of thermal expansion of the inner cylinder 5.12 and the outer cylinder 5.11 differ, resulting in inconsistent deformation. In this novel design, the inner cylinder 5.12 can deform along the support slide rails 5.15, while the shock-absorbing support structure 5.14 provides reverse elastic support to the inner cylinder 5.12. This allows the inner cylinder 5.12 to overcome the problem of inconsistent expansion coefficients and maintain a stable rotational support state.

[0017] During operation, the purified high-temperature flue gas enters region A between the outer cylinder 5.11 and the inner cylinder 5.12. The barium sulfate to be dried enters between the inner cylinder 5.12 and the sieve cylinder 5.13. The outer cylinder 5.11 rotates under the drive of the power unit, and the inner cylinder 5.12 rotates along with it. The flue gas in region A and the barium sulfate in region B complete heat exchange. The steam generated during the drying process passes through the sieve cylinder 5.13 and is discharged from the exhaust pipe 5.16. The dried barium sulfate remains in region B, thus completing the drying of barium sulfate.

[0018] This novel barium sulfate drying system utilizes flue gas for drying, which improves energy efficiency and purifies the flue gas. The drying mechanism employs a combined sleeve and screen cylinder drying method, resulting in high drying efficiency and the ability to process a large amount of material at once. The system overcomes the problem of inconsistent thermal expansion coefficients through an elastic support structure and supporting slide rails, thereby improving overall operational stability.

[0019] Many specific details have been set forth in the foregoing description to provide a full understanding of the present invention. However, the above description is merely a preferred embodiment of the present invention, and the present invention can be implemented in many other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed above. Furthermore, any person skilled in the art can make many possible variations and modifications to the present invention, or modify it into equivalent embodiments, using the methods and techniques disclosed above, without departing from the scope of the present invention. Any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention, without departing from the content of the present invention, shall still fall within the protection scope of the present invention.

Claims

1. A barium sulfate rotary drying device, characterized in that, It consists of a hopper, a feeding auger, a drying mechanism, a discharging auger, and a packaging mechanism. The hopper contains wet barium sulfate to be dried. The discharge port of the hopper is connected to the feeding auger, which transports the wet barium sulfate to the inlet of the drying mechanism. The wet barium sulfate is dried in the drying mechanism. An outlet is provided at one end of the drying mechanism opposite to the inlet. The dried barium sulfate is sent to the packaging mechanism for packaging through the discharging auger. The drying mechanism includes a drying drum with an air inlet and an air outlet at each end. The air inlet is connected to a flue gas filter via an air intake manifold. The flue gas filter is used to filter high-temperature flue gas. A blower is connected to the flue via an air intake pipe and draws in the high-temperature flue gas from the flue. After being filtered by the flue gas filter, the high-temperature flue gas enters the drying drum and exchanges heat with the wet barium sulfate inside the drying drum to dry it. The flue gas after heat exchange is discharged from the air outlet, which is connected to an exhaust fan. The exhaust fan is connected to the flue via an exhaust pipe. The exhaust duct is located above the intake duct; the drying drum has an outer drum and an inner drum disposed within the outer drum, and a shock-absorbing support structure is provided between the inner drum and the outer drum; multiple support slide rails are also provided between the outer drum and the inner drum, and the inner drum can slide along the support slide rails; a sieve drum is provided in the inner drum, and the sieve drum and the inner drum form a sleeve structure, and filter holes are provided on the sieve drum; an exhaust pipe is provided at one end of the inner drum, and the water vapor generated during drying is discharged from the exhaust pipe through the sieve drum.

2. The barium sulfate rotary drying apparatus according to claim 1, characterized in that, The drying mechanism is driven by a motor to rotate around an axis.

3. The barium sulfate rotary drying apparatus according to claim 1, characterized in that, The multiple support slide rails are evenly distributed circumferentially between the outer cylinder and the inner cylinder.

4. The barium sulfate rotary drying apparatus according to claim 3, characterized in that, The support slide rail includes a support block fixedly connected to the outer wall of the inner cylinder and a slide groove located on the inner wall of the outer cylinder, with the support block located in the slide groove.

5. The barium sulfate rotary drying apparatus according to claim 4, characterized in that, When the inner cylinder is heated and deformed, the shock-absorbing support structure provides reverse elastic support to the inner cylinder.

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