Closed-loop sulfur crushing system

Abstract

The utility model discloses a closed-loop sulphur crushing system, including stock bin, crusher, charging bucket, dust collector, transition tank, nitrogen making machine and air compressor, the bottom of stock bin is communicated with the middle of crusher, the upper part of crusher, charging bucket, dust collector and transition tank are communicated in order, transition tank is also communicated with nitrogen making machine, the nitrogen making machine is communicated with the nitrogen making machine, the nitrogen making machine is communicated with the nitrogen making machine, and the air compressor is communicated with the nitrogen making machine. And the transition tank, the air compressor and the lower part of the crusher are communicated in sequence. Through the collaborative design of the nitrogen making machine, the transition tank and the dust remover, under the power action of the same air compressor, tail gas output by the dust remover and nitrogen generated by the nitrogen making machine can be conveyed into the crusher along the same sixth pipeline after entering the transition tank, and the nitrogen is conveyed into the crusher along the other sixth pipeline. The closed-loop operation and inert environment maintenance of the system are realized, the system structure is simplified, the cost is reduced, the safety and the environmental protection property are improved, and the system has remarkable technical advantages and application value.

Description

Technical Field

[0001] This utility model relates to the technical field of rubber sulfur agent production equipment, and in particular to a closed-loop sulfur pulverizing system. Background Technology

[0002] Sulfur, as one of the most commonly used vulcanizing agents in the rubber industry, plays a crucial role in the vulcanization process. Through the vulcanization reaction, sulfur can transform the linear structure of rubber molecules into a three-dimensional network structure, thereby significantly improving the mechanical strength, abrasion resistance, aging resistance, and other physicochemical properties of rubber. To ensure uniform dispersion of sulfur in rubber, it is usually added in powder form during rubber production. Therefore, sulfur blocks or granules need to undergo a crushing process to process them into sulfur powder suitable for rubber production.

[0003] Currently, sulfur powder production mainly relies on pulverizers, which mechanically crush sulfur blocks or granules into fine sulfur powder, which is then output as a gas phase. During the pulverization process, a large amount of sulfur dust is inevitably generated. This dust not only reduces the air quality of the production environment but may also harm the health of operators. Although existing production processes typically include dust removal equipment such as bag filters and cyclone dust collectors to collect and treat the dust generated during pulverization, these devices cannot completely remove sulfur dust from the gas phase conveying exhaust gas. Even after treatment by dust removal equipment, a certain amount of sulfur dust remains in the gas phase conveying exhaust gas. This dust, once discharged with the exhaust gas, diffuses into the working environment, causing environmental pollution and adversely affecting the respiratory system of operators. Furthermore, sulfur dust is flammable and explosive; if it reaches a certain concentration in the air, it may cause safety accidents.

[0004] In summary, existing sulfur pulverization processes still have shortcomings in dust control, and there is an urgent need for a more efficient and environmentally friendly sulfur dust treatment technology to reduce dust pollution to the working environment, protect the health of operators, and improve production safety. Utility Model Content

[0005] The purpose of this invention is to provide a closed-loop sulfur pulverizing system.

[0006] The technical solution to achieve the purpose of this utility model is: a closed-loop sulfur pulverizing system, including a silo, a pulverizer, a material tank, a dust collector, a transition tank, a nitrogen generator, and an air compressor. A first pipe has its first end connected to the bottom of the silo, and its second end connected to the middle of the pulverizer. The horizontal position of the first end of the first pipe is higher than the horizontal position of its second end. A feeding valve is installed on the first pipe. A second pipe has its first end connected to the upper part of the pulverizer, and its second end connected to the middle of the material tank. A third pipe has its first end connected to the middle of the material tank, and its second end connected to the upper part of the dust collector. The middle of the dust collector is connected to the transition tank via a fourth pipe. The transition tank is also connected to the nitrogen generator via a fifth pipe. The lower parts of the transition tank, the air compressor, and the pulverizer are sequentially connected via a sixth pipe. The bottom of the material tank has a discharge port with a discharge valve installed on it. The bottom of the dust collector has an outlet with a dust discharge valve installed on it.

[0007] Furthermore, the second end of the second pipe is positioned horizontally higher than the first end, and the second pipe is inclined upwards along the direction from the first end to the second end. This upward-inclined design allows dust within the second pipe to slide along the inner wall of the pipe into the pulverizer under the influence of gravity, thus achieving automatic cleaning and anti-clogging functions. Specifically, when the second pipe is inclined upwards, the movement of dust within the pipe mainly relies on gravity, avoiding dust accumulation and clogging problems caused by horizontal or downward-inclined installations. Moreover, even in extreme cases where partial blockage occurs within the second pipe, tapping the outer wall of the second pipe to generate vibration can loosen the blockage and allow the dust to quickly slide into the pulverizer, thereby rapidly restoring the pipe's flow. This design not only effectively prevents dust accumulation within the pipe but also improves system reliability and maintenance convenience, reducing downtime and maintenance costs caused by blockages.

[0008] Furthermore, the second end of the third pipe is positioned horizontally higher than the first end, and the third pipe is inclined upwards along the direction from the first end to the second end. This upward-inclined design allows dust within the third pipe to slide along the inner wall of the pipe into the hopper under gravity, thus achieving automatic cleaning and anti-clogging functions. Specifically, when the third pipe is inclined upwards, the movement of dust within the pipe mainly relies on gravity, avoiding dust accumulation and clogging problems caused by horizontal or downward-inclined installations. Moreover, even in extreme cases where partial blockage occurs within the third pipe, tapping the outer wall of the third pipe to generate vibration can loosen the blockage and allow the dust to quickly slide into the hopper, rapidly restoring the pipe's flow. This design not only effectively prevents dust accumulation within the pipe but also improves system reliability and maintenance convenience, reducing downtime and maintenance costs caused by blockages.

[0009] Furthermore, the feeding valve is a double-layer butterfly valve, comprising a first butterfly valve and a second butterfly valve spaced vertically apart. During operation, when material needs to be fed into the crusher, the first butterfly valve opens, allowing material in the hopper to enter between the first and second butterfly valves. Afterward, the first butterfly valve closes, and the second butterfly valve opens, allowing the material between the first and second butterfly valves to flow along the first pipeline into the crusher. This configuration allows for feeding without shutting down the machine, ensuring continuous operation and production efficiency.

[0010] Furthermore, the discharge valve is a double-layer butterfly valve, comprising a third butterfly valve and a fourth butterfly valve spaced vertically apart. During operation, when the sulfur powder in the tank is discharged, the third butterfly valve opens, allowing the sulfur powder to enter between the third and fourth butterfly valves. Subsequently, the third butterfly valve closes, and the fourth butterfly valve opens, allowing the sulfur powder between the two valves to exit through the discharge port. This configuration allows for discharge without shutting down the machine, ensuring continuous operation and production efficiency.

[0011] Furthermore, the dust discharge valve is a double-layer butterfly valve, comprising a fifth butterfly valve and a sixth butterfly valve spaced vertically apart. During operation, when dust is discharged from the dust collector, the fifth butterfly valve opens, allowing dust from the hopper to enter between the fifth and sixth butterfly valves. Subsequently, the fifth butterfly valve closes, and the sixth butterfly valve opens, allowing the dust between the fifth and sixth butterfly valves to exit through the outlet. This configuration allows for material discharge without shutting down the machine, ensuring continuous operation and production efficiency.

[0012] Furthermore, a vibration device is installed on the outer wall of the bottom of the material tank. When the sulfur powder in the material tank is discharged or the discharge port is blocked, the vibration device is activated to vibrate. Through the vibration of the vibration device, the discharge port can be prevented from being blocked and the discharge port can be cleared, so as to achieve smooth discharge of sulfur powder in the material tank.

[0013] This invention relates to a closed-loop sulfur pulverizing system. By incorporating a nitrogen generator, the system receives nitrogen, enabling gas-phase transport while maintaining an inert environment. This effectively prevents sulfur dust explosions during pulverization, thus improving system safety. When supplying nitrogen to the pulverizer, the invention includes a transition tank in the nitrogen gas path, and connects the fourth pipe supplying the exhaust gas from the dust collector to this transition tank. This configuration offers the following advantages:

[0014] On the one hand, after the dust collector is connected to the transition tank through the fourth pipe, the exhaust gas output by the dust collector can be circulated and transported to the crusher through the sixth pipe under the power of the air compressor, realizing a closed loop system. Dust and gas are circulated and processed internally within the system, effectively avoiding dust spillage and environmental pollution, while improving resource utilization and reducing raw material waste.

[0015] On the other hand, the transition tank is located in the nitrogen gas path, and the exhaust gas output from the dust collector and the nitrogen generated by the nitrogen generator share the same delivery power of the air compressor and the same delivery path of the sixth pipeline. This design not only greatly simplifies the system structure, reduces equipment costs and installation complexity, but also improves the system's operating efficiency and stability. By integrating the delivery paths of the exhaust gas and nitrogen, redundancy in pipelines and equipment is reduced, further optimizing the system's spatial layout and ease of maintenance.

[0016] Furthermore, the transition tank also serves to buffer and balance the system's gas pressure, ensuring the stability and continuity of gas delivery and preventing system instability or equipment damage caused by pressure fluctuations. Simultaneously, the recycling of nitrogen reduces the energy consumption of the nitrogen generator, further achieving the goal of energy conservation and consumption reduction.

[0017] This invention, through the coordinated design of the nitrogen generator, the transition tank, and the dust collector, not only achieves closed-loop operation and inert environment maintenance of the system, but also simplifies the system structure, reduces costs, and improves safety and environmental protection, demonstrating significant technical advantages and application value. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the closed-loop sulfur pulverizing system of this utility model. Detailed Implementation

[0019] The preferred embodiment of the closed-loop sulfur pulverizing system of this utility model is described in detail below with reference to the accompanying drawings.

[0020] like Figure 1 As shown, a closed-loop sulfur pulverizing system includes a silo 1, a pulverizer 2, a storage tank 3, a dust collector 4, a transition tank 5, a nitrogen generator 6, and an air compressor 7. A first pipe 101 has its first end 1011 connected to the bottom of the silo 1, and its second end 1012 connected to the middle of the pulverizer 2. The first end 1011 of the first pipe 101 is horizontally higher than the second end 1012. A feeding valve 11 is installed on the first pipe 101. A second pipe 102 has its first end 1021 connected to the upper part of the pulverizer 2, and its second end 1022 connected to the... The middle of the material tank 3 is connected, and the first end 1031 of the third pipe 103 is connected to the middle of the material tank 3. The second end 1032 of the third pipe 103 is connected to the upper part of the dust collector 4. The middle of the dust collector 4 is connected to the transition tank 5 through the fourth pipe 104. The transition tank 5 is also connected to the nitrogen generator 6 through the fifth pipe 105. The lower parts of the transition tank 5, the air compressor 7, and the pulverizer 2 are connected in sequence through the sixth pipe 106. The bottom of the material tank 3 has a discharge port 31, and a discharge valve 32 is installed on the discharge port 31. The bottom of the dust collector 4 has an outlet 41, and a dust discharge valve 42 is installed on the outlet 41.

[0021] This invention relates to a closed-loop sulfur pulverizing system. Sulfur raw material is stored in a silo 1. During feeding, the feeding valve 11 is opened, and the raw material in the silo 1 is transported by gravity through the first pipe 101 from the bottom of the silo 1 to the pulverizer 2. After entering the pulverizer 2, the sulfur raw material is pulverized to the required particle size. Dust and gas generated during the pulverizing process are discharged from the top of the pulverizer 2 through the second pipe 102 and transported to the storage tank 3. The sulfur dust entering the storage tank 3 settles at the bottom, while the gas and its carried dust enter the dust collector 4 through the third pipe 103. In the dust collector 4, the dust carried in the gas is separated and settles to the bottom of the dust collector 4, while the purified gas enters the transition tank 5 through the fourth pipe 104. The transition tank 5 receives purified gas from the dust collector 4 on one hand, and is connected to the nitrogen generator 6 through the fifth pipe 105 on the other hand, receiving nitrogen generated by the nitrogen generator 6. Under the power of the air compressor 7, the purified gas and the nitrogen generated by the nitrogen generator 6 are circulated and transported to the pulverizer 2 through the sixth pipe 106 to replenish nitrogen to the system to maintain an inert environment.

[0022] This utility model relates to a closed-loop sulfur pulverizing system. The pulverized sulfur powder is discharged from the feed port 31 at the bottom of the hopper 3, and the feed valve 32 controls the discharge and speed. Dust in the dust collector 4 is discharged through the outlet 41, and the dust discharge valve 42 controls the dust emission.

[0023] This invention relates to a closed-loop sulfur pulverizing system. Through the nitrogen generator 6, nitrogen is supplied to the system, enabling gas-phase transport while maintaining an inert environment. This effectively prevents sulfur dust explosions during pulverization, improving system safety. When supplying nitrogen to the pulverizer 2, this invention includes a transition tank 5 in the nitrogen gas path, and connects the fourth pipe 104, which supplies the exhaust gas from the dust collector 4, to the transition tank 5. This configuration offers the following advantages:

[0024] On the one hand, after the dust collector 4 is connected to the transition tank 5 through the fourth pipe 104, the exhaust gas output by the dust collector 4 can be circulated and transported to the crusher 2 along the sixth pipe 106 under the power of the air compressor 7, realizing a closed loop of the system. The dust and gas in the system are circulated and treated internally, which effectively avoids dust overflow and environmental pollution, while improving resource utilization and reducing raw material waste.

[0025] On the other hand, the transition tank 5 is located in the nitrogen gas path, and the exhaust gas output from the dust collector 4 and the nitrogen generated by the nitrogen generator 6 share the same conveying power from the air compressor 7 and the same conveying path from the sixth pipeline 106. This design not only greatly simplifies the system structure and reduces equipment costs and installation complexity, but also improves the system's operating efficiency and stability. By integrating the conveying paths of the exhaust gas and nitrogen, redundancy in pipelines and equipment is reduced, further optimizing the system's spatial layout and ease of maintenance.

[0026] Furthermore, the transition tank 5 also serves to buffer and balance the system pressure, ensuring the stability and continuity of gas delivery and preventing system instability or equipment damage caused by pressure fluctuations. Simultaneously, the recycling of nitrogen reduces the energy consumption of the nitrogen generator 6, further achieving the goal of energy conservation and consumption reduction.

[0027] In summary, through the coordinated design of the nitrogen generator 6, the transition tank 5, and the dust collector 4, this utility model not only achieves closed-loop operation and inert environment maintenance of the system, but also simplifies the system structure, reduces costs, and improves safety and environmental protection, demonstrating significant technical advantages and application value.

[0028] In this closed-loop sulfur pulverizing system, preferably, the second end 1022 of the second pipe 102 is positioned horizontally higher than the first end 1021 of the second pipe 102. The second pipe 102 is inclined upwards along the direction from the first end 1021 to the second end 1022. This upward-inclined design allows dust within the second pipe 102 to slide along the inner wall of the pipe into the pulverizer 2 under gravity, thus achieving automatic cleaning and anti-clogging functions. Specifically, when the second pipe 102 is inclined upwards, the movement of dust within the pipe mainly relies on gravity, avoiding dust accumulation and blockage problems caused by horizontal or downward-inclined installations. Furthermore, even in extreme cases where partial blockage occurs within the second pipe 102, tapping the outer wall of the second pipe 102 to generate vibration can loosen the blockage and allow the dust to quickly slide into the pulverizer 2, thereby rapidly restoring the pipe's flow. This design not only effectively prevents dust accumulation in the pipes, but also improves the reliability and ease of maintenance of the system, reducing downtime and maintenance costs caused by blockages.

[0029] In this closed-loop sulfur pulverizing system, preferably, the second end 1032 of the third pipe 103 is positioned horizontally higher than the first end 1031 of the third pipe 103, and the third pipe 103 is inclined upwards along the direction from the first end 1031 to the second end 1032. This upward-inclined design allows dust within the third pipe 103 to slide along the inner wall of the pipe into the hopper 3 under gravity, thus achieving automatic cleaning and anti-clogging functions. Specifically, when the third pipe 103 is inclined upwards, the movement of dust within the pipe mainly relies on gravity, avoiding dust accumulation and blockage problems caused by horizontal or downward-inclined installations. Furthermore, even in extreme cases where partial blockage occurs within the third pipe 103, tapping the outer wall of the third pipe 103 to generate vibration can loosen the blocked dust and allow it to quickly slide into the hopper 3, thereby rapidly restoring the pipe's flow. This design not only effectively prevents dust accumulation in the pipes, but also improves the reliability and ease of maintenance of the system, reducing downtime and maintenance costs caused by blockages.

[0030] In this closed-loop sulfur pulverizing system, the feeding valve 11 is preferably a double-layer butterfly valve, comprising a first butterfly valve 111 and a second butterfly valve 112 spaced apart vertically. During operation, when material needs to be fed into the pulverizer 2, the first butterfly valve 111 opens, allowing material from the hopper 1 to enter between the first butterfly valve 111 and the second butterfly valve 112. Subsequently, the first butterfly valve 111 closes, and the second butterfly valve 112 opens, allowing material between the first butterfly valve 111 and the second butterfly valve 112 to flow along the first pipe 101 into the pulverizer 2. This configuration allows for feeding without shutting down the machine, ensuring continuous operation and high production efficiency.

[0031] In this closed-loop sulfur pulverizing system, the discharge valve 32 is preferably a double-layer butterfly valve, comprising a third butterfly valve 321 and a fourth butterfly valve 322 spaced apart vertically. During operation, when sulfur powder is discharged from the material tank 3, the third butterfly valve 321 of the discharge valve 32 opens, allowing the sulfur powder in the material tank 3 to enter between the third butterfly valve 321 and the fourth butterfly valve 322. Subsequently, the third butterfly valve 321 closes, and the fourth butterfly valve 322 opens, allowing the sulfur powder between the third butterfly valve 321 and the fourth butterfly valve 322 to be discharged through the discharge port 31. This configuration allows for material discharge without stopping the machine, ensuring continuous operation and production efficiency.

[0032] In this closed-loop sulfur pulverizing system, the dust discharge valve 42 is preferably a double-layer butterfly valve, comprising a fifth butterfly valve 421 and a sixth butterfly valve 422 spaced apart vertically. During operation, when dust is discharged from the dust collector 4, the fifth butterfly valve 421 of the dust discharge valve 42 opens, allowing dust from the material tank 3 to enter between the fifth butterfly valve 421 and the sixth butterfly valve 422. Subsequently, the fifth butterfly valve 421 closes, and the sixth butterfly valve 422 opens, allowing the dust between the fifth butterfly valve 421 and the sixth butterfly valve 422 to exit through the outlet 41. This configuration allows for material discharge without shutting down the system, ensuring continuous operation and high production efficiency.

[0033] In this closed-loop sulfur pulverizing system, preferably, a vibration device 33 is installed on the outer wall of the bottom of the hopper 3. When sulfur powder is discharged from the hopper 3 or when the discharge port 31 is blocked, the vibration device 33 is activated to vibrate. The vibration of the vibration device 33 can prevent the discharge port 31 from being blocked and clear the discharge port 31, so as to achieve smooth discharge of sulfur powder from the hopper 3.

[0034] The closed-loop sulfur pulverizing system of this utility model uses existing structures for the pulverizer 2, the dust collector 4, the nitrogen generator 6, the air compressor 7, and the vibration device 33. Therefore, this utility model will not elaborate further on these components.

[0035] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent process transformations made using the content of this utility model specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A closed-loop sulfur pulverizing system, characterized in that: The system includes a silo, a crusher, a material tank, a dust collector, a transition tank, a nitrogen generator, and an air compressor. A first pipe connects to the bottom of the silo at one end and to the middle of the crusher at the other end. The first end of the first pipe is horizontally higher than the second end. A feeding valve is installed on the first pipe. A second pipe connects to the upper part of the crusher at one end and to the middle of the material tank at the other end. A third pipe connects to the middle of the material tank at one end and to the upper part of the dust collector at the other end. The middle of the dust collector is connected to the transition tank via a fourth pipe. The transition tank is also connected to the nitrogen generator via a fifth pipe. The lower parts of the transition tank, the air compressor, and the crusher are connected sequentially via a sixth pipe. The bottom of the material tank has a discharge port with a discharge valve installed thereon. The bottom of the dust collector has an outlet with a dust discharge valve installed thereon.

2. The closed-loop sulfur pulverizing system according to claim 1, characterized in that: The second end of the second pipe is positioned horizontally higher than the first end of the second pipe, and the second pipe is inclined upward along the direction from the first end to the second end of the second pipe.

3. The closed-loop sulfur pulverizing system according to claim 1, characterized in that: The second end of the third pipe is positioned horizontally higher than the first end of the third pipe, and the third pipe is inclined upwards along the direction from the first end to the second end of the third pipe.

4. The closed-loop sulfur pulverizing system according to claim 1, characterized in that: The feeding valve is a double-layer butterfly valve, which includes a first butterfly valve and a second butterfly valve that are spaced apart vertically.

5. The closed-loop sulfur pulverizing system according to claim 1, characterized in that: The discharge valve is a double-layer butterfly valve, which includes a third butterfly valve and a fourth butterfly valve that are spaced apart vertically.

6. The closed-loop sulfur pulverizing system according to claim 1, characterized in that: The dust discharge valve is a double-layer butterfly valve, which includes a fifth butterfly valve and a sixth butterfly valve that are spaced apart vertically.

7. The closed-loop sulfur pulverizing system according to claim 1, characterized in that: A vibration device is installed on the outer wall of the bottom of the tank.

Images