Waste emulsion storage equipment

Abstract

The utility model discloses waste emulsion storage equipment which comprises a liquid storage tank, a circulating pump set, a liquid outlet pump and a nitrogen protection system, a stirrer is arranged at the top of the liquid storage tank, an inlet of the circulating pump set is connected with the lower portion of the liquid storage tank through a first pipeline, and an outlet of the circulating pump set is connected with the upper portion of the liquid storage tank through a second pipeline. The second pipeline is further connected with a feeding pipeline, the liquid outlet pump is arranged on one side of the liquid storage tank, an inlet of the liquid outlet pump is connected with the liquid storage tank through a third pipeline, and a gas outlet pipe of the nitrogen protection system is communicated with the top of the liquid storage tank and used for filling nitrogen into the liquid storage tank to form a protection layer. The method has the advantages that waste liquid layering can be prevented, oxidative deterioration is avoided, storage safety is improved, and environmental protection and safety standard requirements are met.

Description

Technical Field

[0001] The utility model relates to a storage device, in particular to a waste emulsion storage device. Background Art

[0002] With the rapid development of modern industry, emulsions have been widely used in production processes such as machining and metal cutting, mainly playing key functions such as cooling, lubrication, and chip removal. However, the emulsion will gradually deteriorate and its performance will decline after long-term use, and it must be replaced regularly, resulting in a large amount of waste emulsion. These waste emulsions contain various chemical components such as oil substances, surfactants, and rust inhibitors. If the treatment method is improper, it will cause serious pollution to the environment such as water bodies and soil. Therefore, developing an efficient, safe, and environmentally friendly waste emulsion storage device can not only help enterprises comply with waste treatment regulations, but also has important practical significance for environmental protection and promoting resource recycling.

[0003] At present, the treatment of waste emulsion in industrial production usually goes through three links: collection, storage, and treatment. In the storage stage, the existing technology mainly uses a simple storage tank structure for temporary storage, and then pumps the waste emulsion to the subsequent treatment system. Some improved storage devices have been equipped with simple stirring devices to reduce the layering phenomenon of the waste liquid. Although these devices meet the temporary storage requirements of waste emulsion to a certain extent, their structures and functions are still relatively single, and they often lack systematic and comprehensive technical considerations.

[0004] There are still two significant deficiencies in the existing waste emulsion storage devices: First, the waste emulsion is prone to oil-water separation and form a layering phenomenon during static storage, which directly affects the effect and efficiency of subsequent treatment; Second, the waste emulsion will be exposed to the air in the traditional storage environment and is prone to oxidation reaction, which not only accelerates the deterioration of the liquid, but also may produce odors and change the physical and chemical properties of the waste liquid. Especially for waste emulsions containing flammable components, storing in an aerobic environment increases the risks of fire and explosion. Although some devices try to solve the layering problem by adding stirring devices, the considerations for oxidation protection and safety improvement are still insufficient, and it is difficult to meet the increasingly strict environmental protection requirements and safety standards.

[0005] Therefore, there is an urgent need to develop a new type of waste emulsion storage device that can effectively prevent the layering of waste emulsion, prevent oxidation and deterioration, and improve storage safety. Summary of the Utility Model

[0006] The purpose of the utility model is to provide a waste emulsion storage device that can prevent the layering of waste liquid, avoid oxidation and deterioration, and improve storage safety, meeting the requirements of environmental protection and safety standards.

[0007] To achieve the above object, the present utility model provides the following technical solutions: A waste emulsion storage device includes a liquid storage tank. A stirrer is provided at the top of the liquid storage tank. It further includes a circulation pump group, a liquid outlet pump, and a nitrogen protection system. The inlet of the circulation pump group is connected to the lower part of the liquid storage tank through a first pipeline, and the outlet of the circulation pump group is connected to the upper part of the liquid storage tank through a second pipeline. A feed pipeline is also connected to the second pipeline. The liquid outlet pump is arranged on one side of the liquid storage tank. The inlet of the liquid outlet pump is connected to the liquid storage tank through a third pipeline. The gas outlet pipe of the nitrogen protection system is communicated with the top of the liquid storage tank for filling nitrogen into the liquid storage tank to form a protective layer.

[0008] Preferably, the circulation pump group includes a first pump and a second pump arranged in parallel. The inlets of the first pump and the second pump are both connected to the first pipeline, and the outlets of the first pump and the second pump are both connected to the second pipeline. First control valves are provided at both the inlet and the outlet of the first pump, and second control valves are provided at both the inlet and the outlet of the second pump.

[0009] Preferably, the nitrogen protection system includes a nitrogen source, a pressure regulating valve, and a safety valve. The pressure regulating valve is arranged on the nitrogen gas pipeline between the nitrogen source and the liquid storage tank for regulating the nitrogen pressure entering the liquid storage tank. The safety valve is arranged on the top of the liquid storage tank for discharging gas when the pressure in the liquid storage tank exceeds a preset value.

[0010] Preferably, the stirrer includes a driving motor and stirring blades. The driving motor is fixed on the top of the liquid storage tank. The stirring blades are connected to the driving motor through a transmission shaft. The transmission shaft penetrates through the top of the liquid storage tank and extends into the interior of the liquid storage tank. The stirring blades are arranged at the bottom end of the transmission shaft.

[0011] Preferably, the bottom of the liquid storage tank is of a conical structure. A drain pipe communicating with the outside is installed at the lowest part of the liquid storage tank. A protective cover is also fixed at the lower end of the liquid storage tank. A drain valve communicating with the drain pipe is arranged on the side wall of the protective cover.

[0012] Preferably, the liquid storage tank is fixedly arranged on a base. The base is of a frame structure, and the liquid outlet pump is also fixed on the base.

[0013] Preferably, a liquid outlet pipeline is connected to the outlet of the liquid outlet pump. A flow meter and a liquid outlet valve are sequentially arranged on the liquid outlet pipeline. The flow meter is used to monitor the discharge flow rate of the waste emulsion, and the liquid outlet valve is used to control the discharge of the waste emulsion.

[0014] Preferably, a maintenance opening is provided at the top of the liquid storage tank, and a sealing cover plate is detachably installed on the maintenance opening.

[0015] Preferably, the material of the liquid storage tank is stainless steel, and a heat preservation layer is provided on the outer wall of the liquid storage tank.

[0016] Preferably, a liquid level display device is provided on the side wall of the liquid storage tank. The liquid level display device includes a transparent observation tube and a connecting flange. The upper end and the lower end of the observation tube are respectively communicated with the upper part and the lower part of the liquid storage tank through the connecting flange.

[0017] Compared with the prior art, the advantages of the present utility model are as follows: through the liquid storage tank equipped with a top stirrer, the waste emulsion liquid is continuously stirred by the stirrer, effectively preventing liquid stratification and sediment accumulation; the circulating pump group forms a complete circulating system through the first pipeline and the second pipeline, extracts the liquid at the lower part of the liquid storage tank and transports it to the upper part, promoting comprehensive mixing of the liquid, ensuring uniform composition of the waste emulsion liquid, and at the same time, the feeding pipeline connected to the second pipeline is convenient for adding new waste emulsion liquid or treatment agent; the setting of the liquid outlet pump and the third pipeline realizes the directional discharge of the treated waste liquid, meeting the subsequent treatment requirements.

[0018] The equipment is also equipped with a nitrogen protection system, which fills nitrogen into the liquid storage tank through the top gas outlet pipe to form an inert gas protection layer, effectively isolating oxygen, preventing the waste emulsion liquid from oxidizing and deteriorating, and at the same time significantly reducing the risk of fire and explosion of the waste emulsion liquid containing flammable components, improving the safety of the entire storage process. This structural design integrating circulating stirring, directional discharge and inert gas protection not only solves the key problems such as stratification, oxidation and safety hazards in the storage process of the waste emulsion liquid, but also improves the subsequent treatment efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only the embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained according to the provided drawings without creative efforts.

[0020] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0021] Figure 2 is a cross-sectional view of the present utility model;

[0022] Figure 3 is a three-dimensional structural schematic diagram of the circulating pump group in the present utility model;

[0023] In the figure, 1 is a liquid storage tank; 2 is a stirrer; 3 is a circulation pump group; 4 is a liquid outlet pump; 5 is a nitrogen protection system; 6 is a first pipeline; 7 is a second pipeline; 8 is a feed pipeline; 9 is a third pipeline; 10 is an air outlet pipe; 11 is a first pump; 12 is a second pump; 13 is a first control valve; 14 is a second control valve; 15 is a nitrogen source; 16 is a pressure regulating valve; 17 is a safety valve; 18 is a nitrogen pipeline; 19 is a drive motor; 20 is a stirring blade; 21 is a transmission shaft; 22 is a conical structure; 23 is a drain pipe; 24 is a protective cover; 25 is a drain valve; 26 is a base; 27 is a liquid outlet pipeline; 28 is a flowmeter; 29 is a liquid outlet valve; 30 is a maintenance opening; 31 is a sealing cover plate; 32 is a liquid level display device; 33 is an observation pipe; 34 is a connecting flange. Detailed implementation manners

[0024] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0025] Embodiment 1: As Figures 1 - 3 shown, a waste emulsion storage device includes a liquid storage tank 1. A stirrer 2 is provided at the top of the liquid storage tank 1. It further includes a circulation pump group 3, a liquid outlet pump 4, and a nitrogen protection system 5. The inlet of the circulation pump group 3 is connected to the lower part of the liquid storage tank 1 through a first pipeline 6, and the outlet of the circulation pump group 3 is connected to the upper part of the liquid storage tank 1 through a second pipeline 7. A feed pipeline 8 is also connected to the second pipeline 7. The liquid outlet pump 4 is arranged on one side of the liquid storage tank 1. The inlet of the liquid outlet pump 4 is connected to the liquid storage tank 1 through a third pipeline 9. The air outlet pipe 10 of the nitrogen protection system 5 is communicated with the top of the liquid storage tank 1 for filling nitrogen into the liquid storage tank 1 to form a protective layer.

[0026] Embodiment 2: As Figures 1 - 3 shown, different from Embodiment 1, the circulation pump group 3 includes a first pump 11 and a second pump 12 arranged in parallel. The inlets of the first pump 11 and the second pump 12 are both connected to the first pipeline 6, and the outlets of the first pump 11 and the second pump 12 are both connected to the second pipeline 7. A first control valve 13 is provided at both the inlet and the outlet of the first pump 11, and a second control valve 14 is provided at both the inlet and the outlet of the second pump 12.

[0027] The inlets of the first pump 11 and the second pump 12 are both connected to the first pipeline 6, and the outlets are both connected to the second pipeline 7, forming a parallel pipeline structure. Control valves are respectively arranged at the inlets and outlets of each pump (the first pump 11 is equipped with the first control valve 13, and the second pump 12 is equipped with the second control valve 14), providing a flexible operation plan: single pump can be started alone to achieve the basic circulation function; two pumps can operate simultaneously to meet the demand for large flow rate and rapid circulation; the two pumps can also operate alternately to extend the service life of the equipment.

[0028] This design not only provides operation redundancy to ensure that the system can still work continuously when one pump is under maintenance or fails, avoiding the risk of shutdown, but also can precisely control the flow rate and pressure according to the viscosity characteristics and circulation requirements of different waste emulsions through the adjustment of the control valves, improving the adaptability of the system. In addition, the dual-pump parallel design enhances the system's processing capacity, accelerates the uniform mixing of waste emulsions, effectively prevents stratification and precipitation phenomena, improves the subsequent treatment efficiency, reduces the wear of a single pump during long-term high-load operation, and extends the service life of the entire system.

[0029] In this embodiment, the nitrogen protection system 5 includes a nitrogen source 15, a pressure regulating valve 16, and a safety valve 17. The pressure regulating valve 16 is arranged on the nitrogen pipeline 18 between the nitrogen source 15 and the liquid storage tank 1 to regulate the nitrogen pressure entering the liquid storage tank 1. The outlet pipe 10 is arranged at the outlet end of the nitrogen pipeline 18, and the safety valve 17 is arranged on the top of the liquid storage tank 1 to discharge gas when the pressure in the liquid storage tank 1 exceeds the preset value.

[0030] The nitrogen protection system 5 adopts a gas pressure control structure, and through the cooperation of the nitrogen source 15, the pressure regulating valve 16, and the safety valve 17, it provides comprehensive safety protection for the waste emulsion. Based on the nitrogen source 15, the pressure regulating valve 16 arranged between the nitrogen source 15 and the liquid storage tank 1 controls the nitrogen pressure entering the liquid storage tank 1. During daily operation, the pressure regulating valve 16 automatically adjusts the nitrogen flow rate according to the preset parameters to ensure that an appropriate positive pressure environment is maintained in the liquid storage tank 1. This positive pressure state effectively prevents the infiltration of external air, thus isolating the contact between oxygen and the waste emulsion, significantly reducing the possibility of the waste emulsion undergoing oxidation reactions, delaying the liquid deterioration rate, and also inhibiting the reproduction of microorganisms, greatly improving the storage stability of the waste emulsion.

[0031] The safety valve 17 installed at the top of the liquid storage tank 1 serves as a key safety guarantee for the system. When the pressure in the liquid storage tank 1 exceeds the preset safety value due to temperature changes, chemical reactions, or system failures, the safety valve 17 will automatically open to timely discharge the excess gas, preventing the pressure from continuously rising and causing equipment damage or safety accidents. This dual control mechanism not only ensures the stable maintenance of the inert protection environment but also provides reliable overpressure protection, making it particularly suitable for storing waste emulsions containing flammable and easily oxidizable components, greatly enhancing the safety performance and reliability of the entire storage system.

[0032] In this embodiment, the agitator 2 includes a drive motor 19 and stirring blades 20. The drive motor 19 is fixed on the top of the liquid storage tank 1, and the stirring blades 20 are connected to the drive motor 19 through a transmission shaft 21. The transmission shaft 21 penetrates the top of the liquid storage tank 1 and extends into the interior of the liquid storage tank 1, and the stirring blades 20 are arranged at the bottom end of the transmission shaft 21.

[0033] The installation method of fixing the drive motor 19 on the top of the liquid storage tank 1 keeps the motor outside the waste liquid environment, effectively avoiding the risk of the motor being corroded by the liquid, and at the same time facilitating the maintenance and repair of the motor; the transmission shaft 21, as an important component connecting the drive motor 19 and the stirring blades 20, penetrates the top of the liquid storage tank 1 and extends into the interior of the liquid storage tank 1, realizing the efficient transmission of power; the design of arranging the stirring blades 20 at the bottom end of the transmission shaft 21 ensures that the blades can penetrate deep into the waste emulsion for full - range stirring, generating a top - down liquid flow. When the motor is started, it drives the transmission shaft 21 to rotate, and the stirring blades 20 rotate at high speed in the liquid, generating strong shear forces and fluid disturbances, effectively destroying the stratification trend of different density components in the waste emulsion, promoting the full mixing of the oil phase and the water phase, and maintaining the emulsified state. This stirring method can also prevent solid particles from depositing at the bottom of the tank, reducing the risk of blockage during the waste liquid treatment process.

[0034] The top - mounted agitator 2 has a simple structure, reliable operation, and convenient maintenance. The design of completely isolating the motor from the liquid greatly improves the safety and service life of the equipment, making it particularly suitable for industrial waste liquid treatment scenarios with long - term continuous operation, ensuring that the waste emulsion always maintains a uniform and stable state during storage, creating ideal conditions for subsequent treatment.

[0035] Embodiment Three: As Figures 1 - 3 shown, different from Embodiment Two, the bottom of the liquid storage tank 1 is a conical structure 22. A drain pipe 23 communicating with the outside is installed at the lowest part of the liquid storage tank 1, and a protective cover 24 is also fixed at the lower end of the liquid storage tank 1. A drain valve 25 communicating with the drain pipe 23 is arranged on the side wall of the protective cover 24.

[0036] The conical bottom forms a natural gravity sedimentation area, enabling solid impurities, sediments, and components with higher density in the waste emulsion to naturally gather at the lowest part of the liquid storage tank 1, thus realizing the initial process of solid-liquid separation. The drain pipe 23 installed at the lowest part of the liquid storage tank 1 provides a direct passage to the outside world, facilitating the regular discharge of accumulated sediments and waste liquid. The protective cover 24 fixed at the lower end of the liquid storage tank 1 not only protects the drainage system, preventing accidental collisions and external environmental interference, but also forms an enclosed space that is convenient for operation. The drain valve 25 provided on the side wall of the protective cover 24 is connected to the drain pipe 23. Through this valve, the operator can precisely control the discharge process, adjust the discharge rate and time according to needs, ensure the efficient discharge of sediments, and avoid unnecessary loss of useful liquid.

[0037] In this embodiment, the liquid storage tank 1 is fixedly arranged on the base 26, and the base 26 is of a frame structure. The liquid outlet pump 4 is also fixed on the base 26.

[0038] The frame-structured base 26, as the basic support platform of the entire system, has excellent load-bearing performance and structural stability. It can effectively bear the huge weight of the fully loaded liquid storage tank 1 and the vibration generated during the operation of the liquid outlet pump 4. The design of installing the liquid storage tank 1 and the liquid outlet pump 4 on the same base 26 greatly simplifies the equipment installation process, reduces the complexity of on-site pipeline connection and docking, and significantly reduces the installation error and leakage risk.

[0039] In this embodiment, the outlet of the liquid outlet pump 4 is connected with a liquid outlet pipe 27. A flow meter 28 and a liquid outlet valve 29 are successively arranged on the liquid outlet pipe 27. The flow meter 28 is used to monitor the discharge flow rate of the waste emulsion, and the liquid outlet valve 29 is used to control the discharge of the waste emulsion.

[0040] The liquid outlet pump 4, as the power source, pumps and pressurizes the waste emulsion in the liquid storage tank 1 and transports it to the liquid outlet pipe 27, providing continuous and stable power for liquid transmission. The flow meter 28 and the liquid outlet valve 29 successively arranged on the liquid outlet pipe 27 form a complete monitoring and control unit. The flow meter 28 captures and displays the flow rate of the waste emulsion in the pipeline in real time, providing accurate data reference for the operator, making the discharge process quantifiable and traceable. The liquid outlet valve 29 arranged after the flow meter 28 serves as the terminal control point of the system. The operator can flexibly adjust the valve opening according to the data displayed by the flow meter 28 to achieve precise control of the discharge rate.

[0041] Embodiment 4: As Figures 1 - 3 shown, different from Embodiment 3, a maintenance opening 30 is provided at the top of the liquid storage tank 1, and a sealing cover plate 31 is detachably installed on the maintenance opening 30.

[0042] The maintenance opening 30, being an open area at the top of the liquid storage tank 1, provides a working passage of sufficient size, enabling operators to directly access the internal space of the liquid storage tank 1. The detachable and installable sealing cover plate 31 adopts an operation-friendly connection method, which can be quickly opened when needed and can ensure good airtightness at ordinary times.

[0043] The above design first addresses the key requirements of equipment maintenance, enabling technicians to regularly inspect the inner wall condition of the liquid storage tank 1, clean the possible attached sediments, replace or repair internal components such as the stirring blade 20, etc. Complex maintenance work can be completed without disassembling the entire system, greatly reducing the maintenance cost and downtime. Secondly, the maintenance opening 30 also provides a convenient way for manual addition of waste emulsion. Especially when the automatic feeding system is unavailable or a small amount of additive needs to be added, operators can directly operate through the maintenance opening 30. In addition, the maintenance opening 30 also facilitates the direct observation of the internal condition of the equipment and problem diagnosis, contributing to the timely discovery of potential faults.

[0044] In this embodiment, the material of the liquid storage tank 1 is stainless steel, and a heat insulation layer is provided on the outer wall of the liquid storage tank 1.

[0045] As the basic material of the liquid storage tank 1, stainless steel has excellent corrosion resistance, can effectively resist the corrosion of various chemical components (such as acids, alkalis, salts, and organic solvents, etc.) in the waste emulsion, prevent liquid leakage and damage to the tank body, and ensure the long-term reliable operation of the equipment. At the same time, the excellent mechanical strength of stainless steel provides sufficient structural support, and can maintain a stable shape even under full load, reducing the risk of deformation.

[0046] The heat insulation layer provided on the outer wall of the liquid storage tank 1 optimizes the system performance from the perspective of heat energy management. As a heat barrier, on the one hand, it prevents the influence of external environmental temperature fluctuations on the temperature of the waste emulsion in the liquid storage tank 1, maintains the thermal stability of the liquid, and avoids the change of physical and chemical properties caused by temperature changes; on the other hand, it reduces energy loss, prevents the waste liquid from freezing or having too high viscosity to affect fluidity in a cold environment, and slows down the heating rate of the waste liquid in a warm environment, inhibiting chemical reactions and microbial activity.

[0047] In this embodiment, a liquid level display device 32 is provided on the side wall of the liquid storage tank 1. The liquid level display device 32 includes a transparent observation tube 33 and a connecting flange 34. The upper and lower ends of the observation tube 33 are respectively communicated with the upper and lower parts of the liquid storage tank 1 through the connecting flange 34.

[0048] The liquid level display device 32 on the side wall of the liquid storage tank 1 adopts the classic communicating vessel principle. Through a simple and reliable structural design, it realizes the intuitive monitoring of the waste emulsion liquid level. The liquid level display device 32 consists of a transparent observation tube 33 and a connecting flange 34. The observation tube 33 is made of corrosion-resistant transparent material to ensure good transparency and chemical stability during long-term use. As a key connecting component, the connecting flange 34 firmly connects the upper and lower ends of the observation tube 33 to the upper and lower parts of the liquid storage tank 1 respectively, forming a closed communicating system. According to the principle of hydrostatics, when the observation tube 33 is in communication with the liquid storage tank 1, the liquid level height in the observation tube 33 will be exactly the same as the liquid level height in the liquid storage tank 1, thus accurately reflecting the actual liquid level of the waste emulsion in the liquid storage tank 1.

[0049] Operators can simply visually observe the liquid level height in the transparent tube to know the actual storage volume of the waste emulsion in the liquid storage tank 1 at any time, without opening the liquid storage tank 1 or using special measuring tools. At the same time, this external display method avoids the problems of nitrogen protection layer damage and oxygen infiltration caused by frequently opening the liquid storage tank 1 to check the liquid level, maintaining the integrity of the inert environment.

[0050] The specific working process of this waste emulsion storage device is as follows:

[0051] First, the waste emulsion enters the liquid storage tank 1 through the feed pipeline 8. The feed pipeline 8 is equipped with a feed valve. The feed can be directly pumped in through the interface of the second pipeline 7, or manually added through the maintenance opening 30 at the top of the liquid storage tank 1. When the waste emulsion reaches a certain liquid level, the nitrogen protection system 5 starts to work, filling nitrogen into the liquid storage tank 1 through the gas outlet pipe 10 at the top, forming an inert gas protection layer above the liquid surface to isolate the oxygen in the air from contacting the waste emulsion.

[0052] During daily storage, the stirrer 2 at the top keeps running, and its stirring blades 20 drive the waste emulsion to continuously turn and mix, preventing oil-water separation and sediment formation. At the same time, the circulation pump group 3 starts to work. The first pump 11 or the second pump 12 (or both pumps simultaneously) extracts the waste emulsion from the conical area at the bottom of the liquid storage tank 1 through the first pipeline 6, and then transports it to the upper part of the liquid storage tank 1 through the second pipeline 7, forming a complete circulation path. This circulation system ensures the uniformity of the waste emulsion in the liquid storage tank 1 and avoids local precipitation and stratification phenomena.

[0053] When it is necessary to treat or transfer the waste emulsion, the liquid discharge pump 4 starts to work, extracting the waste emulsion from the liquid storage tank 1 through the third pipeline 9, and transporting the waste emulsion to the subsequent treatment device through the connected liquid discharge pipeline 27, flow meter 28, and liquid discharge valve 29. The flow meter 28 real-time monitors the discharge flow rate, and the operator can precisely control the discharge rate through the liquid discharge valve 29.

[0054] During the entire working process, the operator can visually monitor the liquid level change in the liquid storage tank 1 through the liquid level display device 32 on the side wall. When necessary, the sediment can be discharged through the drain valve 25 at the bottom of the liquid storage tank 1. When the pressure in the liquid storage tank 1 rises abnormally, the safety valve 17 at the top will automatically open for exhaust to ensure the safe operation of the equipment. The entire system remains stable under the support of the metal frame base 26, and each component works together to achieve the safe storage and effective treatment of waste emulsion liquid.

[0055] The above description is only the implementation mode of this application, and does not limit the patent scope of this application. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of this application, or directly or indirectly applied in other related technical fields, shall be similarly included in the patent protection scope of this application.

Claims

1. A waste emulsion storage device, comprising a liquid storage tank, wherein a stirrer is provided on the top of the liquid storage tank, characterized in that: It also includes a circulation pump group, a liquid outlet pump and a nitrogen protection system. The inlet of the circulation pump group is connected to the lower part of the liquid storage tank through a first pipeline, and the outlet of the circulation pump group is connected to the upper part of the liquid storage tank through a second pipeline. The second pipeline is also connected to a feed pipeline. The liquid outlet pump is arranged on one side of the liquid storage tank, and the inlet of the liquid outlet pump is connected to the liquid storage tank through a third pipeline. The outlet pipe of the nitrogen protection system is connected to the top of the liquid storage tank for filling nitrogen into the liquid storage tank to form a protective layer.

2. A waste emulsion storage device according to claim 1, characterized in that: The circulation pump group includes a first pump and a second pump arranged in parallel, the inlets of the first pump and the second pump are both connected to the first pipeline, the outlets of the first pump and the second pump are both connected to the second pipeline, a first control valve is provided at the inlet and outlet of the first pump, and a second control valve is provided at the inlet and outlet of the second pump.

3. A waste emulsion storage device according to claim 1, characterized in that: The nitrogen protection system includes a nitrogen source, a pressure regulating valve and a safety valve. The pressure regulating valve is arranged on the nitrogen pipeline between the nitrogen source and the liquid storage tank, and is used to adjust the pressure of the nitrogen entering the liquid storage tank. The safety valve is arranged on the top of the liquid storage tank, and is used to discharge gas when the pressure in the liquid storage tank exceeds a preset value.

4. A waste emulsion storage device according to claim 1, characterized in that: The agitator includes a driving motor and a stirring blade, wherein the driving motor is fixed on the top of the liquid storage tank, and the stirring blade is connected to the driving motor through a transmission shaft, and the transmission shaft passes through the top of the liquid storage tank and extends to the inside of the liquid storage tank, and the stirring blade is arranged at the bottom end of the transmission shaft.

5. A waste emulsion storage device according to claim 1, characterized in that: The bottom of the liquid storage tank is a conical structure, a drain pipe connected to the outside is installed at the lowest point of the liquid storage tank, a protective cover is also fixed to the lower end of the liquid storage tank, and a drain valve connected to the drain pipe is arranged on the side wall of the protective cover.

6. A waste emulsion storage device according to claim 1, characterized in that: The liquid storage tank is fixedly arranged on a base, the base is a frame structure, and the liquid outlet pump is also fixed on the base.

7. A waste emulsion storage device according to claim 1, characterized in that: The outlet of the liquid outlet pump is connected to a liquid outlet pipeline, on which a flow meter and a liquid outlet valve are sequentially arranged, wherein the flow meter is used to monitor the discharge flow of the waste emulsion, and the liquid outlet valve is used to control the discharge of the waste emulsion.

8. The waste emulsion storage device according to claim 1, characterized in that: An inspection port is arranged on the top of the liquid storage tank, and a sealing cover plate is detachably mounted on the inspection port.

9. The waste emulsion storage device according to claim 1, characterized in that: The liquid storage tank is made of stainless steel, and an outer wall of the liquid storage tank is provided with a heat-insulating layer.

10. The waste emulsion storage device according to claim 1, characterized in that: A liquid level display device is arranged on the side wall of the liquid storage tank, and the liquid level display device comprises a transparent observation tube and a connecting flange, and the upper end and the lower end of the observation tube are respectively connected with the upper part and the lower part of the liquid storage tank through the connecting flange.

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