A dry-process acetylene calcium crude crushing system

Abstract

The utility model discloses a kind of dry-process acetylene crude crushing system of calcium carbide, tippler is docked with stacker, mechanical breaking hammer is equipped on the stacker top, stacker outlet is docked with conveying scale plate machine, the export end of conveying scale plate machine is docked with the import of jaw crusher, the outlet of jaw crusher is docked with large angle of inclination lifting belt, the export end of large angle of inclination lifting belt is docked with the inlet of cone crusher, the outlet of cone crusher is docked with flat belt conveyor, the export end of flat belt conveyor is docked with coarse material bin import.The utility model is through reasonable design and equipment configuration, realizes the efficient crushing and conveying of calcium carbide.It is high in degree of automation, high in crushing efficiency, good in environmental protection performance, high in equipment stability and strong in flexibility etc., so that it has remarkable advantage in dry-process acetylene production process, can effectively improve production efficiency, reduce production cost and reduce environmental pollution.

Description

Technical Field

[0001] This utility model relates to the field of dry acetylene production technology, and in particular to a dry acetylene calcium carbide coarse crushing system. Background Technology

[0002] The dry acetylene generation process involves spraying water in a mist form into calcium carbide powder, causing a hydrolysis reaction to produce acetylene gas. Calcium carbide crushing and conveying: Calcium carbide is produced in large chunks and requires multi-stage crushing to reduce its particle size to approximately 3mm. The crushed fine calcium carbide is then conveyed to a buffer silo via a bucket elevator.

[0003] Fine calcium carbide is fed into an acetylene generator, where water is sprayed in a mist to react with the calcium carbide. The reaction temperature is controlled at 95–105℃, and the pressure at 4–6 kPa. The generated crude acetylene gas, carrying water vapor, enters a condenser for cooling. The cooled acetylene gas then passes through a positive and negative water seal before entering a gas holder or cooling tower. The condensed water is filtered and recycled. The resulting calcium carbide slag is a dry powder with a moisture content of 4%–10%, which can be used as a high-quality raw material for cement production.

[0004] Currently, in the field of dry acetylene generation technology in China, the dust generated during the unloading and crushing of calcium carbide is significant. It is a completely open environment, making it impossible to minimize dust generation. Furthermore, the on-site dust collection effect is poor, resulting in a harsh working environment inside the workshop. Additionally, due to the long processing time, calcium carbide undergoes severe deliquescence, leading to high acetylene gas concentrations and a strong irritating odor within the workshop. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of existing technologies and provide a dry acetylene calcium carbide coarse crushing system to solve the problems of poor working environment, occupational hazards, increased production costs, long processing time, and severe calcium carbide deliquescence in existing calcium carbide unloading and crushing systems.

[0006] This utility model is achieved through the following technical solution:

[0007] A dry acetylene-calcium carbide coarse crushing system includes a tipper, a stockpile, a conveyor belt conveyor, a jaw crusher, a steep-angle elevator belt, a cone crusher, a flat belt conveyor, and a coarse material bin. The tipper is connected to the stockpile, a mechanical crushing hammer is installed above the stockpile, the outlet of the stockpile is connected to the conveyor belt conveyor, the outlet of the conveyor belt conveyor is connected to the inlet of the jaw crusher, the outlet of the jaw crusher is connected to the steep-angle elevator belt, the outlet of the steep-angle elevator belt is connected to the inlet of the cone crusher, the outlet of the cone crusher is connected to the flat belt conveyor, and the outlet of the flat belt conveyor is connected to the inlet of the coarse material bin.

[0008] Dust collection devices are provided on the side of the mechanical breaker hammer and at the material drop points of the conveyor plate conveyor, jaw crusher, large-angle elevator belt, cone crusher, and flat belt conveyor. The dust collection devices transport the dust-laden gas to the bag filter.

[0009] The first wheel clamp of the tipper can move in parallel. Through the parallel hydraulic telescopic mechanism, the brake wheel can always be kept parallel to the vehicle body. When the brake wheel is running, it can always be oriented towards the wheel, so that it is perpendicular to the wheel surface, preventing the brake wheel from swinging when it separates from the wheel, and ensuring that the brake wheel can be completely in contact with the side of the wheel when braking again.

[0010] The aforementioned stacking silo includes a stacking platform, a silo at the bottom of the stacking platform, a discharge hole at the bottom of the silo, and pushers at both ends of the stacking platform.

[0011] Protective plates are provided on both sides of the conveyor plate conveyor.

[0012] The tipper is equipped with a remote controller.

[0013] The aforementioned steep-angle lifting belt and flat belt conveyor devices are all enclosed, and the motors used support frequency conversion regulation, allowing for flexible adjustment of the conveying speed according to production needs. For example, conveying efficiency can be increased when the material volume is large, while the speed can be reduced to save energy when the material volume is small, enhancing the flexibility and economy of system operation and adapting to the crushing operation needs under different working conditions.

[0014] The advantages of this utility model are: This utility model performs multi-stage crushing of existing large calcium carbide (1200mm). Through a reasonably designed crushing process and equipment, the calcium carbide can be crushed into calcium carbide blocks with a particle size of 20-30mm. This utility model optimizes the existing calcium carbide crushing device, which greatly improves the level of automation. From the feeding and crushing of calcium carbide to the discharge, each link can be precisely controlled by the automated control system, which reduces the participation of manual operation, reduces the risk of production instability caused by human factors, and also reduces the workload of operators.

[0015] In terms of occupational disease prevention, this utility model adopts a closed crushing structure, which effectively suppresses the leakage of dust during the crushing process; combined with efficient dust removal equipment, it can control the dust concentration in the working environment within the safe standard range, greatly reducing the risk of occupational diseases for operators.

[0016] In terms of personnel allocation, this invention significantly reduces the number of workers required compared to traditional crushing devices due to its increased automation, saving labor costs for enterprises. Simultaneously, the enclosed design and excellent dust removal effect greatly improve the cleanliness of the crushing site, reducing dust pollution to the production environment and equipment, extending equipment lifespan, and lowering maintenance costs. Furthermore, this invention improves the efficiency and quality of calcium carbide crushing, reduces calcium carbide loss during the crushing process, effectively lowers the unit consumption of calcium carbide, and enhances the economic benefits and resource utilization efficiency of enterprises. Attached Figure Description

[0017] To more clearly illustrate the technical solution of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of this utility model. Detailed Implementation

[0019] like Figure 1As shown, a dry acetylene-calcium carbide coarse crushing system includes a tipper 1. The tipper 1 has a first wheel clamp 12 that can move parallel to reinforce transport vehicles of different lengths (12-18 meters). A parallel hydraulic telescopic mechanism ensures the brake wheel remains parallel to the vehicle body. During operation, the brake wheel is always oriented towards the wheel, maintaining a perpendicular position to the wheel surface to prevent swaying when separated from the wheel and ensuring complete contact between the brake wheel and the wheel side during re-braking. The tipper 1 can be remotely controlled. The tipper 1 tilts the entire vehicle of calcium carbide onto a storage bin. The storage bin includes a storage platform 2, a hopper 13 at the bottom of the storage platform 2, and a discharge hole at the bottom of the hopper 13. Pushers 3 are located at both ends of the storage platform 2. The hopper is a rectangular hopper of 200mm x 400mm. A mechanical breaker 4 capable of rotating 180° is located above the storage bin and can be operated remotely via video. A conveyor belt conveyor 5 is installed at the bottom of the stockpile. The motor of the conveyor belt conveyor 5 is frequency-controlled and its speed can be adjusted. Guard plates 6 are installed on both sides to prevent calcium carbide blocks from scattering during conveying. A jaw crusher 7 is placed at the end of the conveyor belt conveyor 5. The calcium carbide particles crushed by the jaw crusher 7 are 60-80mm in size. A closed, steep-angle elevator belt 8 is placed below the jaw crusher 7. The steep-angle elevator belt 8 is frequency-controlled and its speed can be adjusted. A cone crusher 9 is placed below the steep-angle elevator belt 8. The calcium carbide particles crushed by the cone crusher 9 are 20-30mm in size. A closed, flat belt conveyor 10 is installed below the cone crusher 9. The closed, flat belt conveyor 10 is frequency-controlled and conveys the calcium carbide blocks on the flat belt conveyor 10 to the coarse material silo 11. The aforementioned tipper 1, stacking platform 2, stacker 3, and mechanical breaker 4 are placed in an independent, enclosed workshop. Dust collection devices 14 (dust hoods) are installed on the top of the workshop and the sides of the mechanical breaker 4, forming a complete dust control system. The aforementioned conveyor belt conveyor 5, jaw crusher 7, steep-angle elevator belt 8, cone crusher 9, and flat belt conveyor 10 are equipped with dust collection devices 14 at the material drop points, directly covering the area to quickly absorb the raised dust and prevent its spread into the workshop. The dust collection devices transport the dust-laden gas to an 8W bag filter 15, where negative pressure adsorption efficiently collects dust, ensuring gas purification efficiency during the working period.

[0020] The mechanical breaker 4 can rotate 180° to hammer large pieces of calcium carbide and is equipped with an automatic pressurization and depressurization device.

[0021] 1. Tipping machine, wheel clamp, stacker, pusher, mechanical breaker, 4. conveyor plate conveyor, 5. jaw crusher, 7. steep angle elevator belt, 8. cone crusher, 9. flat belt conveyor, 10. equipped with a dedicated 8W air volume bag filter.

[0022] The working principle of this utility model is as follows:

[0023] Calcium carbide unloading and stockpiling:

[0024] The calcium carbide blocks are unloaded into the storage bin via tipper 1.

[0025] The bottom of the stacking platform 2 of the stacking silo is equipped with a silo 13, and the bottom of the silo 13 has a discharge hole. The pushers 3 at both ends of the stacking platform 2 push the calcium carbide blocks into the silo. The mechanical crusher 4 can rotate 180° to hammer the large calcium carbide blocks. The crushed calcium carbide enters the conveyor plate conveyor 5 through the discharge hole.

[0026] Crushing and conveying:

[0027] The conveyor plate 5 transports calcium carbide blocks to the jaw crusher 7. The guard plates 6 on both sides of the conveyor plate 5 can prevent the calcium carbide blocks from scattering during the conveying process.

[0028] The jaw crusher 7 crushes the calcium carbide blocks into smaller pieces. The crushed calcium carbide blocks are then conveyed upwards by a steeply inclined elevator belt 8.

[0029] The steep-angle elevator belt 8 conveys the crushed calcium carbide blocks to the cone crusher 9. The cone crusher 9 further crushes the calcium carbide blocks to achieve the required particle size range.

[0030] The crushed calcium carbide blocks are conveyed to the coarse material bin 11 via a flat belt conveyor 10.

[0031] Automation and closed conveying:

[0032] The tipper 1 is equipped with a remote controller, which enables remote operation, improving operational flexibility and safety.

[0033] Both the steep-angle lifting belt 8 and the flat belt conveyor 10 are enclosed variable frequency adjustable conveyor devices, which can adjust the conveying speed according to production needs. At the same time, the enclosed design can reduce dust leakage and reduce environmental pollution.

[0034] High degree of automation:

[0035] The tippler 1 is equipped with a remote controller, allowing operators to operate it from a safe distance, reducing manual intervention and improving work efficiency and safety.

[0036] The conveying device adopts variable frequency regulation, which can flexibly adjust the conveying speed according to actual production needs, ensuring the continuity and stability of the production process.

[0037] High crushing efficiency:

[0038] The crushing system, consisting of a mechanical breaker 4, a jaw crusher 7, and a cone crusher 9, can gradually crush large pieces of calcium carbide into smaller particles, meeting the particle size requirements of the subsequent dry acetylene generation process.

[0039] The pusher 3 at the bottom of the silo can push the calcium carbide blocks evenly into the silo, ensuring the continuous feeding of the conveyor plate conveyor 5 and improving the crushing efficiency.

[0040] Good environmental performance:

[0041] The steep-angle lifting belt 8 and the flat belt conveyor 10 adopt a closed design, which effectively reduces the leakage of calcium carbide dust and reduces environmental pollution.

[0042] A mechanical crusher 4 is installed above the stockpile, which can pre-crush the calcium carbide blocks before they enter the conveying system, further reducing dust generation.

[0043] High equipment stability:

[0044] The conveyor plate conveyor 5 is equipped with guard plates 6 on both sides, which can prevent calcium carbide blocks from scattering during the conveying process, protect the equipment from damage, and improve the stability and service life of the equipment.

[0045] The entire system is designed with the physical properties of calcium carbide in mind, and through a reasonable crushing and conveying process, it ensures that the equipment remains stable during long-term operation.

[0046] Highly flexible:

[0047] The first wheel clamp 12 of the tipper 1 can move in parallel, which can flexibly adjust the unloading position to adapt to calcium carbide blocks of different sizes and shapes, thus improving the adaptability of the system.

[0048] Variable frequency conveyor can adjust the conveying speed according to production needs, enabling the system to flexibly cope with different production tasks.

[0049] This utility model's dry acetylene-calcium carbide coarse crushing system achieves efficient crushing and conveying of calcium carbide through reasonable design and equipment configuration. Its high degree of automation, high crushing efficiency, good environmental performance, high equipment stability, and strong flexibility give it significant advantages in dry acetylene production processes, effectively improving production efficiency, reducing production costs, and minimizing environmental pollution.

Claims

1. A dry acetylene-calcium carbide coarse crushing system, characterized in that: The system includes a tipper, a stockpile, a conveyor belt conveyor, a jaw crusher, a steep-angle elevator, a cone crusher, a flat belt conveyor, and a coarse material bin. The tipper is connected to the stockpile, and a mechanical breaker is installed above the stockpile. The outlet of the stockpile is connected to the conveyor belt conveyor, the outlet of the conveyor belt conveyor is connected to the inlet of the jaw crusher, the outlet of the jaw crusher is connected to the steep-angle elevator, the outlet of the steep-angle elevator is connected to the inlet of the cone crusher, the outlet of the cone crusher is connected to the flat belt conveyor, and the outlet of the flat belt conveyor is connected to the inlet of the coarse material bin.

2. The dry acetylene-calcium carbide coarse crushing system according to claim 1, characterized in that: Dust collection devices are provided on the side of the mechanical breaker hammer and at the material drop points of the conveyor plate conveyor, jaw crusher, large-angle elevator belt, cone crusher, and flat belt conveyor. The dust collection devices transport the dust-laden gas to the bag filter.

3. The dry acetylene-calcium carbide coarse crushing system according to claim 1, characterized in that: The first wheel clamp of the tipper can move in parallel.

4. The dry acetylene-calcium carbide coarse crushing system according to claim 1, characterized in that: The aforementioned stacking silo includes a stacking platform, a silo at the bottom of the stacking platform, a discharge hole at the bottom of the silo, and pushers at both ends of the stacking platform.

5. The dry acetylene-calcium carbide coarse crushing system according to claim 1, characterized in that: Protective plates are provided on both sides of the conveyor plate conveyor.

6. The dry acetylene-calcium carbide coarse crushing system according to claim 1, characterized in that: The tipper is equipped with a remote controller.

7. The dry acetylene-calcium carbide coarse crushing system according to claim 1, characterized in that: The aforementioned steep-angle lifting belt and flat belt conveyor devices are all enclosed, and the motors used support frequency conversion adjustment.

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