Safe material returning system

Abstract

The utility model relates to the technical field of material returning in the chemical industry, in particular to a safe material returning system. The system comprises a material barrel, a movable trolley, a pneumatic pump, a nitrogen source, a densely-arranged pipeline, an underground slop oil tank and the like. And the movable cart is provided with universal wheels and directional wheels, so that the movable cart can be conveniently moved to the material barrel for material returning. The pneumatic pump is driven by nitrogen to convey materials and is provided with a nitrogen connector. A filter, a one-way valve and a material returning port root valve are installed at an inlet of the close-packed pipeline so as to filter impurities, prevent material backflow and control material returning. The system is further provided with a static electricity eliminator and a pump body static electricity grounding wire, so that static electricity is eliminated, and the fire or explosion risk is reduced. In addition, the supports are arranged at the bottoms of the filter, the one-way valve and the material returning port root valve, so that the stability and reliability of the system are enhanced. According to the system, closed conveying of materials is achieved, the safety of operators is effectively protected, and environmental pollution is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of material discharging in the chemical industry, and particularly relates to a safe material discharging system. Background Art

[0002] In the current chemical production field, a large number of various materials are generated during both the normal operation stage of equipment and large-scale overhaul and maintenance periods. A large part of these materials is highly volatile and often contains toxic components. When these highly volatile and toxic materials are not properly treated and directly volatilize into the air, it poses a serious threat to the health of operators, and long-term exposure may lead to serious health problems. At the same time, when these volatile organic compounds (VOCs) escape into the atmosphere in the form of gas, it will also cause irreversible damage to the natural environment, affect air quality, and exacerbate environmental problems such as global warming. Therefore, how to achieve safe and environmentally friendly material discharging in the chemical production process has become an important issue that needs to be solved urgently.

[0003] In the existing technical practice, the material discharging process is usually achieved by connecting the discharging port to a closed discharge system. The discharging port is sealed with one or two valves to ensure minimizing material leakage during the discharging process. These valves are connected to an underground dirty oil tank through pipelines, and the underground dirty oil tank is further sealed with nitrogen and connected to a flare system to handle the possible harmful gases. However, although this design improves the safety of the material discharging process to a certain extent, there are still many potential safety hazards and deficiencies in actual operation.

[0004] Firstly, when the operator opens the valve of the discharging port for material discharging, due to the high pressure or fluidity of the material, it is extremely easy to occur a spraying accident, causing material splashing and environmental pollution. Secondly, once the valve of the discharging port is opened, the pipeline connecting to the underground dirty oil tank will be directly exposed to the atmosphere, which not only increases the risk of an explosive environment but may also cause a fire or explosion accident due to electrostatic discharge and other reasons. Thirdly, if the operator forgets to close the valve after the material discharging is completed and the pump continues to work, it will cause the material to spray out at the discharging port, further exacerbating the potential safety hazard. Content of the Utility Model

[0005] To solve the problems in the background art, the utility model provides a safe material discharging system, which includes a material bucket, a mobile trolley, and a dense row pipeline, and also includes:

[0006] A mobile trolley, which is equipped with universal wheels and directional wheels, and is used to move to the material bucket for material discharging;

[0007] A pneumatic pump, installed on the mobile trolley, which generates pressure through nitrogen drive for material transportation; the pneumatic pump is provided with a nitrogen interface;

[0008] A nitrogen source, which is connected to the pneumatic pump through a pipeline from a nitrogen interface to provide driving force for the pneumatic pump;

[0009] A metal hose at the inlet of the pneumatic pump, with one end connected to the inlet of the pneumatic pump and the other end connected to a material bucket;

[0010] A metal hose at the outlet of the pneumatic pump, with one end connected to the outlet of the pneumatic pump and the other end connected to the inlet of a close - arranged pipeline through a flange wire joint;

[0011] An underground dirty oil tank, which is buried below the ground as the final receiving device for material return, and the close - arranged pipeline is connected to the inlet of the underground dirty oil tank;

[0012] At the inlet of the close - arranged pipeline, a filter, a check valve and a root valve of the material return port are installed in sequence. The filter is installed in the close - arranged pipeline downstream of the flange wire joint to filter impurities in the material; the check valve is installed downstream of the filter to prevent material backflow; the root valve of the material return port is installed downstream of the check valve to control the opening and closing of the material return.

[0013] In a preferred solution, it is installed on or near a mobile trolley, which is used to eliminate the static electricity of the operator's body.

[0014] In a preferred solution, an electrostatic grounding wire for the pump body is also provided. One end of the electrostatic grounding wire for the pump body is connected to the pneumatic pump, and the other end is connected to a grounding device, which is used to eliminate the static electricity during the operation of the pneumatic pump.

[0015] In a preferred solution, brackets are provided at the bottoms of the filter, the check valve and the root valve of the material return port, and the bottoms of the brackets are fixed to the ground through expansion bolts.

[0016] In a preferred solution, the metal hose at the inlet of the pneumatic pump is connected to the inlet of the pneumatic pump through a double - wire joint; the metal hose at the outlet of the pneumatic pump is connected to the outlet of the pneumatic pump through a double - wire joint.

[0017] In a preferred solution, a pump outlet valve is also installed at the inlet of the close - arranged pipeline, and the metal hose at the outlet of the pneumatic pump is connected to the pump outlet valve.

[0018] The beneficial effects achieved by the present utility model are as follows:

[0019] First, the present utility model designs a mobile trolley equipped with universal wheels and directional wheels, which is convenient for operators to move the trolley to the material bucket according to needs for material return. It is applicable to the material return treatment of various materials, and the transformation is simple and convenient. Only a material return valve group needs to be installed above the flange of the material return port, reducing the spraying accidents caused by too high material pressure or fluidity in the traditional method, ensuring the safety of operators, and at the same time realizing the closed - loop transportation of materials and avoiding the direct volatilization of volatile toxic materials into the air.

[0020] Second, the electrostatic eliminator and the static grounding wire of the pump body are provided in the present utility model, which effectively eliminates the static electricity generated during the operation of the operator and the pneumatic pump, and reduces the risk of fire or explosion caused by static electricity discharge. A check valve is installed at the inlet of the dense pipeline to prevent material backflow, further enhancing the safety of the system. A filter is installed at the inlet of the dense pipeline to effectively filter impurities in the material, ensure the cleanliness of the material entering the underground sewage oil tank, and reduce the difficulty and cost of subsequent treatment. Brackets are provided at the bottom of the filter, check valve and the root valve of the discharge port, and are fixed to the ground through expansion bolts, enhancing the stability and reliability of the system. Metal hoses and flange wire joints and other components with good sealing performance are used to connect each component, ensuring the tightness of the system and preventing material leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic diagram of the overall structure of the present utility model.

[0022] Reference numerals in the figure:

[0023] 1. Electrostatic eliminator; 2. Metal hose at the inlet of the pneumatic pump; 3. Material bucket; 4. Nitrogen interface; 5. Pneumatic pump; 6. Mobile trolley; 7. Universal wheel; 8. Fixed wheel; 9. Dense pipeline; 10. Metal hose at the outlet of the pneumatic pump; 11. Expansion bolt; 12. Valve at the pump outlet; 13. Flange wire joint; 14. Filter; 15. Check valve; 16. Root valve of the discharge port; 17. Ground; 18. Underground sewage oil tank; 19. Double wire head; 20. Static grounding wire of the pump body; 21. Bracket. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] Next, the technical solutions in the present utility model will be clearly and completely described in conjunction with the drawings in the present utility model. In addition, the forms of each structure described in the following embodiments are merely examples, and the present utility model is not limited to the structures described in the following embodiments. All other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present utility model.

[0025] Refer to Figure 1 , a safety discharge system composition structure includes:

[0026] Material bucket 3, used to store the materials to be returned. Mobile trolley 6, equipped with universal wheels 7 and directional wheels 8, used to move the trolley to the material bucket for material return. A braking device can be equipped to ensure the stability of the trolley during the material return process. Pneumatic pump 5, installed on the mobile trolley, generates pressure through nitrogen drive and is used for material transportation. A nitrogen interface 4 is provided, connected to the nitrogen source through a pipeline. Nitrogen source, connected from the nitrogen interface 4 to the pneumatic pump 5 through a pipeline to provide driving force for the pneumatic pump. Pneumatic pump inlet metal hose 2, one end connected to the inlet of the pneumatic pump 5, and the other end connected to the material bucket 3, used to suck the material into the pneumatic pump. A double-wire head 19 can be used to connect to the inlet of the pneumatic pump to ensure a firm connection. Pneumatic pump outlet metal hose 10, one end connected to the outlet of the pneumatic pump 5, and the other end connected to the inlet of the dense row pipeline 9 through a flange wire joint 13, used to transport the material to the dense row pipeline.

[0027] The dense row pipeline 9 is connected to the inlet of the underground waste oil tank 18 as a channel for material transportation. A filter 14, a check valve 15 and a root valve 16 of the return port are installed in sequence at the inlet. Filter 14, installed in the dense row pipeline downstream of the flange wire joint 13, used to filter impurities in the material. Check valve 15, installed downstream of the filter 14, to prevent material backflow. Root valve 16 of the return port, installed downstream of the check valve 15, used to control the opening and closing of the material return. Underground waste oil tank 18, as the final receiving device for material return, is buried below the ground 17. Static eliminator 1, installed on or near the mobile trolley, used to eliminate the static electricity of the operator's body. Pump body static grounding wire 20, one end connected to the pneumatic pump 5, and the other end connected to the grounding device, used to eliminate the static electricity during the operation of the pneumatic pump. Support 21, fixed to the ground through expansion bolts 11 at the bottom, used to support the filter 14, the check valve 15 and the root valve 16 of the return port.

[0028] The material bucket 3 is connected to the inlet of the pneumatic pump 5 through the pneumatic pump inlet metal hose 2. The nitrogen source is connected to the nitrogen interface 4 of the pneumatic pump 5 through a pipeline to provide driving force for the pneumatic pump. The outlet of the pneumatic pump 5 is connected to the flange wire joint 13 through the pneumatic pump outlet metal hose 10, and then connected to the inlet of the dense row pipeline 9. A filter 14, a check valve 15 and a root valve 16 of the return port are installed in sequence at the inlet of the dense row pipeline 9, and finally connected to the underground waste oil tank 18. The static eliminator 1 is installed on or near the mobile trolley 6 to eliminate the static electricity of the operator. The pump body static grounding wire 20 is connected to the pneumatic pump 5 and the grounding device to eliminate the static electricity during the operation of the pneumatic pump. The support 21 is fixed to the ground through expansion bolts 11 to support the filter 14, the check valve 15 and the root valve 16 of the return port.

[0029] The working process of a safety material return system of the present utility model is as follows:

[0030] Push the mobile cart 6 near the material bucket 3 to be unloaded, and use the braking device to lock the universal wheels 7 and directional wheels 8 to ensure the stability of the cart during the unloading process.

[0031] Check whether the nitrogen source is sufficient, and ensure that the connection between the nitrogen interface 4 and the pneumatic pump 5 is leak-free. Touch the static eliminator 1 to eliminate the static electricity of the operator and ensure the operation safety.

[0032] Connect one end of the metal hose 2 at the inlet of the pneumatic pump to the inlet of the pneumatic pump 5, and insert the other end into the material bucket 3, ensuring a firm and leak-free connection. Connect one end of the metal hose 10 at the outlet of the pneumatic pump to the outlet of the pneumatic pump 5, and connect the other end to the inlet of the dense row pipeline 9 through the flange wire joint 13, also ensuring a tight and leak-free connection.

[0033] Connect the pneumatic pump 5 to the grounding device using the pump body static grounding wire 20 to eliminate the static electricity that may be generated during the operation of the pneumatic pump. Open the nitrogen source valve, and nitrogen enters the pneumatic pump 5 through the pipeline to provide driving force for the pneumatic pump. Start the pneumatic pump 5, and the pneumatic pump generates pressure through nitrogen drive, sucking and pressurizing the material in the material bucket 3 and transporting it to the outlet of the pneumatic pump.

[0034] The material enters the dense row pipeline 9 through the metal hose 10 at the outlet of the pneumatic pump. During the transportation process, it first passes through the filter 14 to filter out the impurities in the material. The filtered material continues to flow through the check valve 15, and the check valve ensures that the material can only flow in one direction and prevents the material from flowing back. [[ID=q13]]

[0035] Finally, the material enters the underground waste oil tank 18 through the root valve 16 at the unloading port, completing the unloading process.

[0036] During the unloading process, the operator should closely monitor the operating status of the system, including parameters such as the pressure of the pneumatic pump, nitrogen flow rate, and material flow rate. If any abnormal situations are found, such as abnormal pressure increase, material leakage, etc., the unloading should be stopped immediately, the cause should be checked, and the operation can be continued after troubleshooting.

[0037] When the material is completely unloaded into the underground waste oil tank 18, close the nitrogen source valve and stop the operation of the pneumatic pump. Close the root valve 16 at the unloading port to ensure the sealing between the dense row pipeline 9 and the underground waste oil tank 18. Disconnect each connecting component, clean the site, and ensure that there is no material residue and safety hazard. Further process or recycle the material in the underground waste oil tank 18 as needed.

[0038] Regularly discharge the combustible gas in the underground waste oil tank 18 for combustion treatment, and regularly introduce protective gases such as nitrogen into the underground waste oil tank 18. Regularly maintain and service the system, check the wear condition and connection tightness of each component, and ensure the long-term stable operation of the system.

[0039] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A safe material return system, comprising a material barrel (3), a mobile cart (6) and a closely packed pipeline (9), characterized in that: Also includes: A mobile cart (6) is provided with universal wheels (7) and fixed wheels (8), and the mobile cart (6) is used to move to the material barrel (3) for material return; A pneumatic pump (5) is installed on a mobile cart (6). The pneumatic pump (5) is driven by nitrogen to generate pressure for conveying materials. The pneumatic pump (5) is provided with a nitrogen interface (4). A nitrogen source is connected to the pneumatic pump (5) through a pipeline from the nitrogen interface (4) to provide driving force for the pneumatic pump (5); A pneumatic pump inlet metal hose (2), one end of which is connected to the inlet of the pneumatic pump (5) and the other end of which is connected to the material barrel (3); A pneumatic pump outlet metal hose (10), one end of which is connected to the outlet of the pneumatic pump (5), and the other end of which is connected to the inlet of the close-packed pipeline (9) via a flange wire joint (13); An underground waste oil tank (18) is buried below the ground (17) as the final receiving device for the returned material, and a densely packed pipeline (9) is connected to the inlet of the underground waste oil tank (18); A filter (14), a one-way valve (15) and a material return port root valve (16) are sequentially installed at the inlet of the close-packed pipeline (9), wherein the filter (14) is installed in the close-packed pipeline (9) downstream of the flange wire joint (13) for filtering impurities in the material; the one-way valve (15) is installed downstream of the filter (14) to prevent material backflow; the material return port root valve (16) is installed downstream of the one-way valve (15) for controlling the opening and closing of the material return.

2. The safe material return system according to claim 1, characterized in that: A static eliminator (1) is also provided and is installed on or near the mobile cart (6) for eliminating static electricity on the operator's body.

3. The safe material return system according to claim 1, characterized in that: A pump body static grounding wire (20) is also provided, one end of which is connected to the pneumatic pump (5) and the other end is connected to a grounding device, for eliminating static electricity during the operation of the pneumatic pump (5).

4. The safe material return system according to claim 1, characterized in that: A bracket (21) is provided at the bottom of the filter (14), the one-way valve (15) and the return port root valve (16), and the bottom of the bracket (21) is fixed to the ground (17) through an expansion bolt (11).

5. The safe material return system according to claim 1, characterized in that: The pneumatic pump inlet metal hose (2) is connected to the inlet of the pneumatic pump (5) through a double-threaded head (19); the pneumatic pump outlet metal hose (10) is connected to the outlet of the pneumatic pump (5) through a double-threaded head (19).

6. The safe material return system according to claim 1, characterized in that: A pump outlet valve (12) is also installed at the inlet of the close-packed pipeline (9), and the pneumatic pump outlet metal hose (10) is connected to the pump outlet valve (12).

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