A safe waste liquid storage tank device for incinerating waste liquid

Abstract

The utility model belongs to industrial waste liquid treatment equipment technical field especially is a kind of safe waste liquid storage tank device for incineration waste liquid, including support frame, liquid storage tank, storage tank, pivot, driven assembly and clean scraper frame;The liquid storage tank and storage tank are fixedly installed on support frame, fixedly installed with feed pipe, nitrogen injection pipe, communicating pipe, return pipe and multiple branch pipes on the liquid storage tank, multiple branch pipes are connected with same discharge pipe, and feed pipe, nitrogen injection pipe and discharge pipe are respectively provided with feed valve, check valve and discharge valve, the communicating pipe and return pipe are all communicated with storage tank, and the feed end of communicating pipe is located in the bottom inner wall lowest point of liquid storage tank.The utility model design is reasonable, can realize the self-cleaning operation of the inner wall of liquid storage tank when waste liquid is discharged, can effectively avoid the phenomenon of blockage, and the overall structure is compact, convenient to operate, can satisfy the safe, stable and efficient needs of industrial waste liquid storage.

Description

Technical Field

[0001] This utility model relates to the technical field of industrial waste liquid treatment equipment, and in particular to a safe waste liquid storage tank device for incineration waste liquid. Background Technology

[0002] In the process of waste liquid incineration, industrial waste liquid needs to be temporarily stored in storage tanks before being transported to the incineration system. This type of waste liquid often contains high concentrations of organic matter, acid and alkali substances, and solid particles, which easily adhere to and deposit on the inner wall of the storage tank to form residue. Traditional waste liquid storage tanks are mostly single-storage structures, lacking targeted cleaning and anti-clogging designs. After long-term use, the accumulation of residue will lead to corrosion of the tank wall and blockage of the pipes, which not only affects the service life of the storage tank, but also requires regular shutdown for manual cleaning, increasing maintenance costs and safety risks. At the same time, when the waste liquid is discharged, the sediment is easily discharged with the waste liquid. Although some devices are equipped with filters for filtration, the waste liquid and sediment are in the same storage tank, which can easily cause blockage and further affect the incineration efficiency.

[0003] Therefore, this utility model proposes a safe waste liquid storage tank device for incineration waste liquid to solve the above problems.

[0004] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings mentioned in the background section by providing a safe waste liquid storage tank device for incineration waste liquid.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a safe waste liquid storage tank device for incineration waste liquid, including a support frame, a storage tank, a storage tank, a rotating shaft, a driven component, and a cleaning scraper;

[0007] Both the liquid storage tank and the storage tank are fixedly installed on the support frame. The liquid storage tank is fixedly installed with a feed pipe, a nitrogen injection pipe, a connecting pipe, a return pipe and multiple branch pipes. The multiple branch pipes are connected to the same discharge pipe. The feed pipe, the nitrogen injection pipe and the discharge pipe are respectively equipped with a feed valve, a check valve and a discharge valve. The connecting pipe and the return pipe are both connected to the storage tank, and the feed end of the connecting pipe is located at the lowest point of the bottom inner wall of the liquid storage tank.

[0008] The rotating shaft is rotatably mounted on the connecting pipe and the discharge pipe. The driven component is located inside the discharge pipe and connected to the rotating shaft. The cleaning scraper is fixedly mounted on the top of the rotating shaft and contacts the inner wall of the storage tank. A slag discharge pipe is fixedly installed on the storage tank, and a slag discharge valve is fixedly installed on the slag discharge pipe.

[0009] Preferably, the driven component includes multiple impellers, with multiple impellers fixedly mounted on the rotating shaft, all of which are located inside the discharge pipe, and the discharge ends of multiple branch pipes are located above the multiple impellers.

[0010] A spiral blade is fixedly installed on the rotating shaft, and the spiral blade is located inside the connecting pipe and extends into the storage tank.

[0011] Preferably, an adjusting wheel is fixedly installed on the rotating shaft, and the adjusting wheel is located between the connecting pipe and the discharge pipe.

[0012] Preferably, an annular groove is formed on the inner wall of the liquid storage tank, the feed ends of multiple branch pipes extend into the annular groove, and an annular filter plate is fixedly installed in the annular groove.

[0013] Preferably, a pressure stabilizing pipe is fixedly installed on the top of the liquid storage tank, and a breather valve is fixedly installed on the pressure stabilizing pipe.

[0014] Preferably, a level gauge that communicates with the inner cavity of the storage tank is fixedly installed on the support frame.

[0015] Preferably, a spherical filter plate is fixedly installed on the inner wall of the top of the storage tank, and the return pipe is located above the spherical filter plate.

[0016] Preferably, the bottom inner wall of the storage tank is tapered, and the feed end of the slag discharge pipe is located at the lowest point of the bottom inner wall of the storage tank.

[0017] Preferably, the base material of the liquid storage tank, storage tank, reflux pipe, connecting pipe, branch pipe and discharge pipe, as well as the rotating shaft, impeller and spiral blade are all 316L stainless steel.

[0018] The beneficial effects of this utility model are:

[0019] This invention utilizes a driven component to drive an impeller through the flow of waste liquid, which in turn rotates the shaft and cleaning scraper, achieving automatic cleaning of the inner wall of the storage tank. Combined with spiral blades to assist in the sedimentation of sludge, the sediment enters the storage tank through a connecting pipe, effectively solving the problems of residue accumulation and cleaning difficulties in traditional storage tanks. Furthermore, the dual filtration design of annular and spherical filter plates prevents waste residue from clogging the branch pipes and avoids backflow of sludge from the storage tank, improving the stability of the device's operation. The combination of a pressure stabilizing pipe and a breather valve automatically adjusts the pressure inside the storage tank, ensuring operational safety. The use of 316L stainless steel enhances the device's corrosion resistance and extends its overall service life. In addition, the adjustable wheel allows for manual intervention of the shaft's rotation, adapting to different operating conditions. The level gauge enables real-time monitoring of the waste liquid volume, further enhancing the device's practicality and reliability. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a three-dimensional structural diagram of a safe waste liquid storage tank device for incineration waste liquid proposed in this utility model;

[0022] Figure 2 for Figure 1 Front view structural diagram;

[0023] Figure 3 for Figure 1 A schematic diagram of the cross-sectional structure;

[0024] Figure 4 for Figure 3 Front view structural diagram;

[0025] Figure 5 This is a schematic diagram of the structure of the cleaning scraper, rotating shaft, adjusting wheel, impeller and spiral blades proposed in this utility model.

[0026] In the diagram: 1. Support frame; 2. Storage tank; 21. Nitrogen injection pipe; 211. Check valve; 22. Feed pipe; 221. Feed valve; 23. Pressure stabilizing pipe; 231. Breathing valve; 24. Level gauge; 3. Storage tank; 31. Return pipe; 311. Spherical filter plate; 32. Connecting pipe; 33. Slag discharge pipe; 4. Branch pipe; 401. Annular filter plate; 41. Discharge pipe; 42. Discharge valve; 5. Rotary shaft; 51. Cleaning scraper; 52. Spiral blade; 53. Impeller; 54. Adjusting wheel. Detailed Implementation

[0027] The technical solution of this utility model will now be clearly and completely described with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0028] Reference Figure 1-5 A safe waste liquid storage tank device for incineration waste liquid includes a support frame 1, a storage tank 2, a storage tank 3, a rotating shaft 5, and a cleaning scraper 51;

[0029] Both the liquid storage tank 2 and the storage tank 3 are fixedly installed on the support frame 1. The liquid storage tank 2 is fixedly installed with a feed pipe 22, a nitrogen injection pipe 21, a connecting pipe 32, a return pipe 31 and multiple branch pipes 4. The multiple branch pipes 4 are connected to the same discharge pipe 41. The feed pipe 22, the nitrogen injection pipe 21 and the discharge pipe 41 are respectively equipped with a feed valve 221, a check valve 211 and a discharge valve 42. The connecting pipe 32 and the return pipe 31 are both connected to the storage tank 3, and the feed end of the connecting pipe 32 is located at the lowest point of the bottom inner wall of the liquid storage tank 2.

[0030] In order to automatically adjust the pressure inside the liquid storage tank 2 when it is abnormal, avoid damage to the tank due to excessively high or low pressure, and ensure the safe operation of the tank, a pressure stabilizing pipe 23 is fixedly installed on the top of the liquid storage tank 2, and a breather valve 231 is fixedly installed on the pressure stabilizing pipe 23.

[0031] The rotating shaft 5 is rotatably and sealed on the connecting pipe 32 and the discharge pipe 41. The cleaning scraper 51 is fixedly installed on the top of the rotating shaft 5 and contacts the inner wall of the storage tank 2. The contact pressure between the cleaning scraper 51 and the inner wall of the storage tank 2 is 0.1-0.3 MPa, which is similar to the force of a finger lightly pressing on a table. This ensures that the attached residue can be scraped off without causing abnormal wear of the cleaning scraper 51 due to excessive pressure. It also effectively reduces the load on the rotating shaft 5 when it rotates. Multiple impellers 53 are fixedly installed on the rotating shaft 5. All impellers 53 are located inside the discharge pipe 41, and the discharge ends of multiple branch pipes 4 are located above the multiple impellers 53. This allows waste liquid to enter through the branch pipes 4. When the discharge pipe 41 is in operation, the impeller 53 is driven to rotate by the impact force generated by the flow of waste liquid, which in turn drives the rotating shaft 5 to rotate synchronously. This allows the cleaning scraper 51 to move in a circular motion along the inner wall of the storage tank 2, thereby continuously scraping off the waste liquid residue attached to the tank wall. This effectively prevents the tank wall from being corroded or blocked due to long-term accumulation of residue, and improves the cleanliness and service life of the storage tank 2. In order to assist in the discharge of the sediment in the storage tank 2 when the rotating shaft 5 is rotating, the sediment can be discharged into the storage tank 3 through the connecting pipe 32. A spiral blade 52 is fixedly installed on the rotating shaft 5, and the spiral blade 52 is located in the connecting pipe 32 and extends into the storage tank 2.

[0032] In order to prevent waste residue such as sediment from entering the branch pipe 4, and to achieve cleaning of the annular filter plate 401 when the rotating shaft 5 controls the movement of the cleaning scraper 51, an annular groove is provided on the inner side wall of the liquid storage tank 2, and the feed ends of multiple branch pipes 4 extend into the annular groove, and the annular filter plate 401 is fixedly installed in the annular groove.

[0033] Meanwhile, in order to facilitate manual adjustment of the rotation state of the shaft 5 when the impeller 53 cannot effectively drive the shaft 5 to rotate, so as to adapt to the requirements of slag conveying speed under different working conditions, an adjusting wheel 54 is fixedly installed on the shaft 5, and the adjusting wheel 54 is located between the connecting pipe 32 and the discharge pipe 41.

[0034] A slag discharge pipe 33 is fixedly installed on the storage tank 3, and a slag discharge valve is fixedly installed on the slag discharge pipe 33;

[0035] The support frame 1 is fixedly equipped with a level gauge 24 that communicates with the inner cavity of the storage tank 2. The level gauge 24 is a magnetic float level gauge commonly used in storage tanks, which can monitor the liquid level of waste liquid in the storage tank 2 in real time. When installing and using the level gauge 24, the technicians shall set it according to the actual use conditions, industry practice and relevant standards, and take into account the possible impact of the characteristics of the waste liquid. This part can be carried out using existing known technology.

[0036] In this embodiment, in order to filter the waste liquid that enters from the return pipe 31 and flows back to the storage tank 2, and to prevent the sediment and other materials entering the storage tank 3 from flowing back into the storage tank 2, a spherical filter plate 311 is fixedly installed on the top inner wall of the storage tank 3, and the return pipe 31 is located above the spherical filter plate 311. At the same time, the spherical design can increase the filtration area, reduce the adhesion of impurities on the surface of the annular filter plate 311, and extend the cleaning cycle.

[0037] In this embodiment, in order to facilitate the accumulation of precipitated slag towards the slag discharge pipe 33 under gravity, improve slag discharge efficiency, and reduce the amount of slag residue in the storage tank 3, the bottom inner wall of the storage tank 3 is set in a conical shape, and the feed end of the slag discharge pipe 33 is located at the lowest point of the bottom inner wall of the storage tank 3.

[0038] In this embodiment, the liquid storage tank 2, storage tank 3, return pipe 31, connecting pipe 32, branch pipe 4, and discharge pipe 41 are all made of 316L stainless steel. Additionally, the base material of the rotating shaft 5, impeller 53, and spiral blade 52 is also 316L stainless steel, which effectively resists the corrosion of acids, alkalis, and other corrosive substances in the waste liquid, extending the service life of the device and reducing maintenance costs. Meanwhile, the cleaning scraper 51 is made of polytetrafluoroethylene (PTFE) at the contact point with the inner wall of the liquid storage tank 2. The valves (including the feed valve 221)... The sealing surfaces of the valves on the discharge valve 42 and the slag discharge pipe 33 are all made of Hastelloy C-276 or Monel alloy, or coated with PTFE (polytetrafluoroethylene) wear-resistant and corrosion-resistant coating on the 316L stainless steel sealing surface. The mating surfaces of the rotating shaft 5 and the sealing bearing, and the force-bearing contact surfaces of the adjusting wheel 54 are nitrided or sprayed with WC (tungsten carbide) wear-resistant coating to adapt to complex waste liquid conditions containing high concentrations of chloride ions, strong acids and alkalis, and to improve the corrosion resistance, wear resistance and sealing reliability of key parts.

[0039] In this embodiment, the rotating shaft 5 is rotatably connected to the discharge pipe 41 and the connecting pipe 32 respectively through two sealed bearings, which can provide stable support for the rotating shaft 5 while preventing leakage. The sealed bearings are made of 316L stainless steel, and their sealing structure preferably uses fluororubber or PEFE material, avoiding the use of ordinary nitrile rubber. At the same time, a double sealing structure (such as a double-sided contact sealing ring) is adopted to further prevent waste liquid vapor and small residue from entering, extending the service life of the bearing. In addition, a 316L stainless steel dustproof cover is added to the outside of the sealed bearing during installation to prevent residue in the liquid storage tank 2 from directly impacting the bearing sealing surface.

[0040] The support frame 1 is made of conductive metal, which can form a good conductive path between the liquid storage tank 2 and the storage tank 3 and the ground. This effectively conducts the static electricity generated during the use of the device to the ground in a timely manner, avoiding the accumulation of static electricity and causing safety hazards, and ensuring the safety of waste liquid storage. At the same time, the metal support frame 1 also has high structural strength, which can provide stable support for the liquid storage tank 2 and the storage tank 3, ensuring that the device will not shake or tip over during operation.

[0041] In practical applications, the breather valve 231 is paired with an external condensation recovery device to reduce steam escape, which can balance environmental protection and waste prevention. In practical applications, the breather valve 231 with a flame arrester is selected. This is a conventional setting in the existing known technology. The specific model can be directly purchased from the market by the technicians and installed according to the requirements. Therefore, it will not be described in detail here.

[0042] In addition, when the waste liquid in the storage tank 2 is completely discharged, the annular filter plate 401 is flushed with water through the discharge pipe 41 by means of pumping or other means to achieve the reverse flushing operation of the annular filter plate 401, so as to avoid the phenomenon of excessive clogging of the annular filter plate 401 due to long-term use.

[0043] Working principle: In use, the waste liquid to be treated is first injected into the storage tank 2 through the feed pipe 22. The breather valve 231 on the pressure stabilizing pipe 23 automatically adjusts according to the pressure changes in the storage tank 2 to ensure that the storage tank 2 is always within a safe pressure range. Then, nitrogen is injected into the storage tank 2 through the nitrogen injection pipe 21 to maintain a positive pressure environment inside the tank and prevent backflow under the action of the one-way valve 211. When the waste liquid needs to be discharged for incineration, the discharge valve 42 on the discharge pipe 41 is opened. The waste liquid in the storage tank 2 is filtered by the annular filter plate 401 under the action of nitrogen pressure and its own weight, and then enters the discharge pipe 41 through multiple branch pipes 4. When the discharge end of 4 flows into the discharge pipe 41, the impact force generated by its flow will drive multiple impellers 53 located in the discharge pipe 41 to rotate. The impellers 53 drive the rotating shaft 5 to rotate synchronously, thereby causing the cleaning scraper 51 fixed at the top of the rotating shaft to move in a circular motion along the inner wall of the storage tank 2, continuously scraping off the waste liquid residue attached to the tank wall, avoiding the accumulation of residue that causes corrosion or blockage of the tank wall. At the same time, the spiral blades 52 on the rotating shaft 5 will push the sediment at the bottom of the storage tank 2 during rotation, causing the residue to enter the storage tank 3 through the connecting pipe 32 for collection. When the residue in the storage tank 3 accumulates to a certain amount, the slag discharge valve on the slag discharge pipe 33 can be opened to discharge it.

[0044] Throughout the operation, the level gauge 24 monitors the waste liquid level in the storage tank 2 in real time. If the impeller 53 cannot effectively drive the shaft 5 to rotate due to reasons such as insufficient waste liquid flow, the rotation state of the shaft 5 can be controlled by manually rotating the adjusting wheel 54 located between the connecting pipe 32 and the discharge pipe 41. This ensures that the cleaning scraper 51 and the spiral blade 52 can work normally and adapt to the operating requirements under different working conditions. In addition, the spherical filter plate 311 at the top of the storage tank 3 can filter the waste liquid that may flow back through the return pipe 31 again, preventing the slag in the storage tank 3 from re-entering the storage tank 2. The conical design of the inner wall at the bottom of the storage tank is conducive to the slag gathering towards the slag discharge pipe 33, improving the slag discharge efficiency.

[0045] The above provides a detailed description of a safe waste liquid storage tank device for incineration waste liquid provided by this utility model. Specific embodiments have been used to illustrate the principle and implementation of this utility model. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core idea of ​​this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A safe waste liquid storage tank device for incineration waste liquid, characterized in that, It includes a support frame (1), a liquid storage tank (2), a storage tank (3), a rotating shaft (5), a driven assembly, and a cleaning scraper (51); The liquid storage tank (2) and the storage tank (3) are both fixedly installed on the support frame (1). The liquid storage tank (2) is fixedly installed with a feed pipe (22), a nitrogen injection pipe (21), a connecting pipe (32), a return pipe (31) and multiple branch pipes (4). The multiple branch pipes (4) are connected to the same discharge pipe (41). The feed pipe (22), the nitrogen injection pipe (21) and the discharge pipe (41) are respectively equipped with a feed valve (221), a check valve (211) and a discharge valve (42). The connecting pipe (32) and the return pipe (31) are both connected to the storage tank (3). The feed end of the connecting pipe (32) is located at the lowest point of the bottom inner wall of the liquid storage tank (2). The rotating shaft (5) is sealed and rotatably installed on the connecting pipe (32) and the discharge pipe (41). The driven component is set inside the discharge pipe (41) and connected to the rotating shaft (5). The cleaning scraper (51) is fixedly installed on the top of the rotating shaft (5) and in contact with the inner wall of the storage tank (2). The storage tank (3) is fixedly installed with a slag discharge pipe (33) and a slag discharge valve is fixedly installed on the slag discharge pipe (33).

2. The safe waste liquid storage tank device for incineration waste liquid according to claim 1, characterized in that: The driven component includes multiple impellers (53), multiple impellers (53) are fixedly installed on the rotating shaft (5), multiple impellers (53) are all located inside the discharge pipe (41), and the discharge ends of multiple branch pipes (4) are all located above the multiple impellers (53).

3. The safe waste liquid storage tank device for incineration waste liquid according to claim 2, characterized in that: A spiral blade (52) is fixedly installed on the rotating shaft (5), and the spiral blade (52) is located in the connecting pipe (32) and extends into the storage tank (2).

4. The safe waste liquid storage tank device for incineration waste liquid according to claim 1, characterized in that: An adjusting wheel (54) is fixedly installed on the rotating shaft (5), and the adjusting wheel (54) is located between the connecting pipe (32) and the discharge pipe (41).

5. The safe waste liquid storage tank device for incineration waste liquid according to claim 1, characterized in that: The inner wall of the storage tank (2) is provided with an annular groove, and the feed ends of multiple branch pipes (4) extend into the annular groove, and an annular filter plate (401) is fixedly installed in the annular groove.

6. The safe waste liquid storage tank device for incineration waste liquid according to claim 1, characterized in that: A pressure stabilizing pipe (23) is fixedly installed on the top of the liquid storage tank (2), and a breather valve (231) is fixedly installed on the pressure stabilizing pipe (23).

7. The safe waste liquid storage tank device for incineration waste liquid according to claim 1, characterized in that: A level gauge (24) that communicates with the inner cavity of the storage tank (2) is fixedly installed on the support frame (1).

8. The safe waste liquid storage tank device for incineration waste liquid according to claim 1, characterized in that: A spherical filter plate (311) is fixedly installed on the top inner wall of the storage tank (3), and the return pipe (31) is located above the spherical filter plate (311).

9. A safe waste liquid storage tank device for incineration waste liquid according to claim 1, characterized in that: The bottom inner wall of the storage tank (3) is tapered, and the feed end of the slag discharge pipe (33) is located at the lowest point of the bottom inner wall of the storage tank (3).

10. A safe waste liquid storage tank device for incineration waste liquid according to claim 3, characterized in that: The base material of the liquid storage tank (2), storage tank (3), return pipe (31), connecting pipe (32), branch pipe (4), discharge pipe (41), as well as the rotating shaft (5), impeller (53) and spiral blade (52) is 316L stainless steel.

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