A plastic bucket capable of recording the internal solution

Abstract

This utility model relates to a plastic bucket capable of recording the internal solution, aiming to solve the technical problem that when using a magnetic float level gauge to detect the liquid level inside a plastic bucket, long-term adhesion and blockage can occur inside the level gauge. Cleaning by rinsing results in incomplete cleaning, affecting the accuracy of the detection. The device includes a plastic bucket body, with a level gauge cylinder detachably installed at one end. The upper end of the level gauge cylinder has a bore, into which a magnetic float is placed. A scraper is inserted into the bore, and a connecting rod is connected to the upper end of the scraper. The top of the connecting rod passes through a flange cover. A pipe is installed on the upper end of the flange cover, and an annular pipe is connected to the upper end of the pipe. A first flexible hose is connected to the upper end of the annular pipe, and a water pump is connected to the end of the first flexible hose. This utility model allows for rinsing and scraping of the level gauge, ensuring complete and thorough cleaning inside the level gauge, thus enabling accurate detection of the liquid level inside the plastic bucket.

Description

Technical Field

[0001] This utility model relates to the field of plastic buckets, specifically a plastic bucket capable of recording the internal solution. Background Technology

[0002] Plastic drums are cylindrical or polygonal containers with open or narrow openings, made primarily of synthetic or natural polymer resins through molding processes such as injection molding and blow molding. They are widely used for the storage and transportation of liquids or solids. After filling plastic drums with liquids, the liquid level needs to be checked and recorded, typically using a magnetic level gauge.

[0003] Chinese patent discloses a magnetic level gauge (authorization announcement number CN202092735U). The patented technology includes a level gauge body, which is hollow and the hollow part inside the level gauge body contains liquid; a main tube sleeve, which is fitted onto the level gauge body; a side tube reinforcing sleeve, which is fixed to one side of the main tube sleeve; a strong magnetic buoy, which is placed in the hollow part and floats on the liquid surface; and a drain sampling valve, which is set at the bottom of the level gauge body.

[0004] However, existing technologies have the following problems when used: Firstly, in existing magnetic level gauges, residual liquid impurities easily adhere to the inner wall of the detection cylinder, and there is a lack of convenient and efficient cleaning structures. After long-term use, the accumulation of impurities will hinder the normal floating of the magnetic float, leading to a decrease in the accuracy of level detection. Furthermore, disassembly and cleaning require the disassembly of multiple components, which is cumbersome and affects detection efficiency. Secondly, existing methods use water to flush away impurities adhering to the level gauge. However, relying solely on water for flushing is incomplete and can hinder the normal floating of the magnetic levitation, leading to a decrease in the accuracy of level detection. Summary of the Invention

[0005] The purpose of this utility model is to overcome the shortcomings of the existing technology, adapt to the needs of reality, and provide a plastic bucket that can record the internal solution. This solves the technical problem that when the current magnetic float level gauge detects the liquid level in the plastic bucket, long-term adhesion and blockage will occur inside the level gauge. Cleaning by rinsing will result in incomplete cleaning, which will affect the accuracy of the detection.

[0006] To achieve the purpose of this utility model, the technical solution adopted by this utility model is as follows: a plastic bucket capable of recording the internal solution is designed, including a plastic bucket body, a liquid level gauge cylinder detachably installed at the end of the plastic bucket body, a cylinder hole opened at the upper end of the liquid level gauge cylinder, and a magnetic float placed in the cylinder hole, a flange cover two detachably installed at the lower end of the liquid level gauge cylinder, a flange cover one detachably installed at the upper end of the liquid level gauge cylinder, a scraper inserted into the cylinder hole, a connecting rod connected to the upper end of the scraper, and the top end of the connecting rod penetrating the flange cover one; A pipe is installed on the upper end of the flange cover, an annular pipe is connected to the upper end of the pipe, a first flexible hose is connected to the upper end of the annular pipe, a water pump is connected to the end of the first flexible hose, a second flexible hose is connected to the upper end of the water pump, and an external water storage tank is connected to the end of the second flexible hose.

[0007] In this design, a magnetic levitation device is placed inside the bore at the upper end of the level gauge cylinder. The magnetic levitation device floats up and down with changes in the solution level within the bore, thus providing a dynamic detection component for level recording. Simultaneously, flange cover one and flange cover two are detachably installed at the upper and lower ends of the level gauge cylinder, respectively. This detachable design not only facilitates the installation, inspection, and replacement of internal components but also allows for thorough cleaning of the cylinder's interior when necessary, greatly improving the convenience of equipment maintenance.

[0008] A scraper is inserted into the borehole, and a connecting rod is installed at the upper end of the scraper, with the top of the connecting rod passing through the flange cover. This provides an important guarantee for cleaning the inner wall of the borehole. When impurities adhere to the inner wall of the borehole, the scraper can be moved by operating the connecting rod without complicated disassembly, thus achieving preliminary cleaning pretreatment of the inner wall.

[0009] In addition, a pipe is installed on the upper end of the flange cover, and an annular pipe is connected to the upper end of the pipe. The upper end of the annular pipe is connected to a first flexible hose, and the end of the first flexible hose is connected to a water pump. The upper end of the water pump is connected to a second flexible hose, and the end of the second flexible hose is connected to an external water tank, forming a complete flushing and cleaning system. When cleaning of the cylinder bore is required, the water pump is started, and water from the external water tank is sequentially introduced into the cylinder bore through the second flexible hose, the first flexible hose, the pipe, and the annular pipe, achieving efficient flushing of the cylinder bore's interior. During the flushing process, the pressure generated by the water flow exerts a downward thrust on the scraper, pushing it down along the inner wall of the cylinder bore. In this process, the scraper can thoroughly remove impurities adhering to the inner wall of the cylinder bore, ensuring the cleanliness of the cylinder bore's interior and preventing impurities from affecting the normal floating of the magnetic levitation, thereby ensuring the accuracy of the liquid level recording. This cleaning method combining flushing and scraping not only improves the cleaning effect but also simplifies the cleaning operation, providing strong support for the long-term stable operation of the equipment.

[0010] Preferably, a lid is threaded to the upper end of the plastic bucket body, a first connecting pipe is connected to the upper and lower parts of the outer wall of the plastic bucket body, and a second connecting pipe is connected to the upper and lower parts of the outer wall of the liquid level gauge cylinder, and the first connecting pipe and the second connecting pipe are detachably connected.

[0011] In practical applications, this plastic bucket achieves an effective seal by threading a lid onto the top of the bucket body. This threaded connection not only makes operation simple and convenient, allowing staff to easily open the lid to add solution or perform internal inspections and maintenance, but also ensures excellent sealing performance, preventing leakage or contamination of the solution and guaranteeing its purity and safe storage.

[0012] Meanwhile, a first connecting pipe is connected to the upper and lower ends of the outer wall of the plastic bucket body, and a second connecting pipe is connected to the upper and lower ends of the outer wall of the level gauge cylinder body. The first and second connecting pipes are connected in a detachable manner, further optimizing the connection structure between the level gauge cylinder body and the plastic bucket body. This dual-connection design makes the connection between the level gauge cylinder body and the plastic bucket body more stable and reliable, avoiding the problem of loosening or damage due to excessive force at a single connection point. This ensures that the level gauge cylinder body remains stable during use, thereby guaranteeing the accuracy of level detection. Furthermore, the detachable connection method allows for easy disassembly of the level gauge cylinder body as needed.

[0013] Preferably, an indicator is installed at the end of the level gauge cylinder away from the second connecting pipe, and the indicator is provided with multiple magnetic flip plates.

[0014] In practical applications, an indicator is installed on the end of the level gauge cylinder furthest from the second connecting pipe of the plastic bucket. Multiple magnetic flippers are installed within the indicator, successfully converting the floating changes of the magnetic levitation into a clearly visible liquid level indication, achieving clear recording and display of the solution level inside the plastic bucket. When the solution in the plastic bucket enters the cylinder of the level gauge through the first and second connecting pipes, the magnetic levitation inside the cylinder moves up and down with the liquid level. Because the magnetic levitation is magnetic, it exerts a magnetic force on the corresponding magnetic flippers within the indicator during its movement, causing the flippers to flip. Different liquid level heights correspond to different flipping positions of the magnetic flippers. By observing the flipping of the magnetic flippers within the indicator, operators can quickly and accurately determine the liquid level inside the plastic bucket without opening the lid or performing complex operations, greatly improving the convenience and intuitiveness of liquid level detection.

[0015] Preferably, a circular hole is provided at the center of the upper end of the flange cover, a sealing ring is installed on the inner wall of the circular hole, the top end of the connecting rod passes through the sealing ring, and the outer wall of the connecting rod is tightly fitted with the inner wall of the sealing ring.

[0016] In practical applications, during equipment operation, whether the cylinder orifice contains solution for level detection or is used for rinsing and cleaning, the sealing ring tightly adheres to the outer wall of the connecting rod and the inner wall of the circular hole, preventing solution or rinsing water from leaking through the gap between the connecting rod and the circular hole. This ensures the equipment's sealing performance and prevents solution waste or rinsing water overflow that could cause environmental pollution. Simultaneously, the excellent sealing performance also prevents external dust and impurities from entering the cylinder orifice through this gap, contaminating the internal environment and affecting the normal floating of the magnetic levitation and the accuracy of level recording. Furthermore, the presence of the sealing ring does not affect the normal up-and-down movement of the connecting rod. While ensuring a seal, it also ensures that the scraper can smoothly clean the inner wall of the cylinder orifice, achieving a perfect balance between sealing and functional operation.

[0017] Preferably, the outer wall of the scraper is fitted to the inner wall of the cylinder hole, and a groove is provided at the lower end of the scraper, and the groove is truncated cone-shaped.

[0018] In practical applications, by ensuring the outer wall of the scraper adheres to the inner wall of the cylinder bore, full contact is achieved between the scraper and the bore bore during its vertical movement, thereby maximizing the removal of impurities adhering to the bore bore. This tight fit avoids the problem of impurity residue caused by gaps between the scraper and the bore bore, significantly improving the cleaning effect and ensuring the bore bore remains clean at all times. This provides a favorable environment for the smooth floating of the magnetic levitation system, thus guaranteeing the accuracy of liquid level recording.

[0019] Preferably, the cylindrical hole, the first round hole, the connecting rod, and the vertical axis of the scraper are coaxial.

[0020] In practical applications, by ensuring that the cylindrical hole, the circular hole, the connecting rod, and the scraper are aligned with the vertical axis, precise alignment of the core components is achieved, providing crucial assurance for the stable and efficient operation of the equipment. The coaxial alignment ensures that all components are subjected to uniform stress during installation and use, preventing damage caused by excessive localized stress due to component misalignment and extending the overall service life of the equipment.

[0021] For the scraper disc, the coaxial axis ensures it maintains a uniform fit against the inner wall of the cylinder bore. During the up-and-down cleaning process, it prevents one side from being thoroughly cleaned while the other side remains uncleaned due to misalignment, guaranteeing consistent and thorough cleaning results. For the connecting rod, the coaxial axis ensures a smoother and more stable movement trajectory when moving the scraper disc, avoiding unnecessary friction and collisions with the inner wall of the cylinder bore or the sealing ring. This reduces component wear and ensures the sealing performance of the sealing ring remains unaffected. Simultaneously, the aligned axes guarantee that the magnetic levitation device always floats along the axial direction within the cylinder bore, preventing obstruction of its movement due to misalignment of internal components. This ensures the accuracy and stability of liquid level detection, making the overall equipment operation more reliable and efficient.

[0022] Preferably, the upper end of the flange cover has multiple mounting holes arranged in a ring array, and each of the multiple mounting holes has a pipe installed in it. The pipe is connected to the ring pipe, and the upper end of the ring pipe has a pipe installed in it. The end of the first hose away from the water pump is connected to the pipe in the second pipe.

[0023] In practical applications, multiple pipes are arranged in a ring array, which allows the flushing water to form a uniform ring flow inside the cylinder when it enters the cylinder through each pipe. The water flow can cover the inner wall of the cylinder in all directions, avoiding the problem of water flow being concentrated in a local area and other areas not being flushed properly due to water entering through a single pipe. This ensures that all parts inside the cylinder are fully flushed, improving the comprehensiveness of the flushing.

[0024] Simultaneous water intake through multiple pipes allows for the delivery of more flushing water into the orifice per unit time, increasing the total volume and pressure of the flushing water flow. This not only more quickly removes impurities from the inner wall of the orifice but also generates a greater downward thrust on the scraper, enabling it to move more quickly and powerfully along the inner wall of the orifice, further enhancing the impurity removal effect and cleaning efficiency. Furthermore, the annular pipe design buffers and distributes the water flow, ensuring a smooth distribution of water from pipe two to each pipe one. This prevents uneven water output from pipe one due to flow fluctuations, guaranteeing the stability of the flushing process and making the entire flushing and cleaning operation more efficient and reliable.

[0025] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. When it is necessary to clean the inside of the cylinder hole, the water pump is started and water is evenly introduced into the cylinder hole through the second hose, the first hose, the annular pipe and the pipeline. The water introduced into the cylinder hole can rinse the inner wall of the cylinder hole and prevent a large amount of impurities from sticking to the inner wall of the cylinder hole and affecting the detection of the liquid level in the plastic bucket body. 2. When the inner wall of the cylinder hole is rinsed with water, the flange cover is removed and the magnetic float is taken out. After rinsing the inner wall of the cylinder hole with water once, the scraper is moved upward again and water is introduced into the cylinder hole again. The water can impact the scraper, so that the scraper can move downward to scrape away the impurities on the inner wall of the cylinder hole, preventing incomplete rinsing and improving the cleaning effect. Attached Figure Description

[0026] Figure 1 This is a first-view perspective three-dimensional schematic diagram of the present invention.

[0027] Figure 2 This is a second-view perspective three-dimensional schematic diagram of the present invention.

[0028] Figure 3 This is a three-dimensional schematic diagram of the plastic bucket body of this utility model.

[0029] Figure 4 This is a cross-sectional view of the liquid level gauge cylinder, connecting rod, and scraper plate of this utility model.

[0030] Figure 5 For the present utility model Figure 4 Enlarged view of point A.

[0031] Figure 6 This is a three-dimensional schematic diagram of the connection between the annular pipe, the first flexible hose, and the water pump of this utility model.

[0032] Figure 7 This is a three-dimensional schematic diagram of the connecting rod and scraper of this utility model.

[0033] In the picture: 100, the plastic bucket itself; 110. First connecting pipe; 120. Bucket lid; 130. Second connecting pipe; 140. Indicator; 150. Level gauge cylinder; 151. Cylinder hole; 160. Flange cover one; 161. Round hole one; 170. Flange cover 2; 180. Maglev; 190. Sealing ring; 200. Ring pipe; 210. First flexible hose; 220. Second flexible hose; 230. Water pump; 240. Pipe 1; 250. Pipe 2; 300. Connecting rod; 310. Scraper; 311. Groove. Detailed Implementation

[0034] The present invention will be further described below with reference to the accompanying drawings and embodiments: Example 1: A plastic bucket capable of recording the internal solution, see [link to example]. Figures 1 to 7 The system includes a plastic bucket body 100, a level gauge cylinder 150 detachably mounted at the end of the plastic bucket body 100, a cylinder hole 151 at the upper end of the level gauge cylinder 150, and a magnetic levitation device 180 placed inside the cylinder hole 151. A flange cover 170 is detachably mounted at the lower end of the level gauge cylinder 150, and a flange cover 160 is detachably mounted at the upper end of the level gauge cylinder 150. A scraper 310 is inserted into the cylinder hole 151, and a connecting rod 300 is connected to the upper end of the scraper 310, with the top end of the connecting rod 300 penetrating through the flange cover 160. A bucket cover 120 is threadedly connected to the upper end of the plastic bucket body 100. First connecting pipes 110 are connected to the upper and lower ends of the outer wall of the plastic bucket body 100, respectively. The upper and lower ends of the outer wall of the level gauge cylinder 150 are connected to... A second connecting pipe 130 is connected, and the first connecting pipe 110 is detachably connected to the second connecting pipe 130; an indicator 140 is installed at the end of the level gauge cylinder 150 away from the second connecting pipe 130, and multiple magnetic flip plates are provided inside the indicator 140; a circular hole 161 is opened at the center of the upper end of the flange cover 160, and a sealing ring 190 is installed on the inner wall of the circular hole 161; the top end of the connecting rod 300 passes through the sealing ring 190, and the outer wall of the connecting rod 300 is tightly fitted with the inner wall of the sealing ring 190; the outer wall of the scraper 310 is fitted with the inner wall of the cylinder hole 151, and a groove 311 is opened at the lower end of the scraper 310, and the groove 311 is frustum-shaped; the cylinder hole 151, the circular hole 161, the connecting rod 300 and the scraper 310 are coaxial with the vertical axis; When cleaning the interior of the cylindrical hole 151, if the operator determines that impurities have adhered to the inner wall of the cylindrical hole 151, potentially affecting the normal floating of the magnetic levitation 180 and interfering with the liquid level detection, the operator simply needs to start the water pump 230, which is connected to the external water tank via the second flexible hose 220. After starting, the water pump 230 generates stable pumping power, transporting clean water from the external water tank to the first flexible hose 210 via the second flexible hose 220. The clean water then flows along the first flexible hose 210 into the connected annular pipe 200. The annular pipe 200, acting as a water transfer and distribution structure, evenly distributes the water flow from the first flexible hose 210 to multiple pipes 240 connected below it, ultimately guiding the water smoothly and evenly into the interior of the cylindrical hole 151 through the pipes 240.

[0035] The cleaning water introduced into the orifice 151 forms a comprehensive rinsing flow within the orifice 151. As the water flows through the orifice 151, it thoroughly flushes the inner wall of the orifice. This flushing action effectively removes various impurities adhering to the inner wall of the orifice 151, preventing them from accumulating in large quantities. If a large amount of impurities adheres to the inner wall of the orifice 151, it will not only alter the internal spatial structure but may also obstruct the magnetic levitation device 180 as it floats up and down with the liquid level. This would prevent the magnetic levitation device 180 from accurately reflecting the actual liquid level in the plastic container 100, thus affecting the accuracy of liquid level detection. Through water flow and comprehensive rinsing, impurities on the inner wall of the orifice 151 are promptly removed, maintaining a clean internal environment and providing smooth floating space for the magnetic levitation device 180. This ensures that subsequent detection of the liquid level in the plastic container 100 remains accurate and reliable.

[0036] Specifically, a pipe 240 is installed on the upper end of the flange cover 160. An annular pipe 200 is connected to the upper end of the pipe 240. A first flexible hose 210 is connected to the upper end of the annular pipe 200. A water pump 230 is connected to the end of the first flexible hose 210. A second flexible hose 220 is connected to the upper end of the water pump 230. The end of the second flexible hose 220 is connected to an external water storage tank. Multiple mounting holes are arranged in a ring array on the upper end of the flange cover 160. Pipes 240 are installed in each of the multiple mounting holes. Pipes 240 are connected to the annular pipe 200. A second pipe 250 is installed on the upper end of the annular pipe 200. The end of the first flexible hose 210 away from the water pump 230 is connected to the second pipe 250. In this invention, during the process of flushing the inner wall of the cylindrical bore 151 with water flow, when deep cleaning begins, the flange cover 170 at the lower end of the level gauge cylinder 150 is first removed, followed by the removal of the magnetic levitation 180 inside the cylindrical bore 151. This avoids damage to the magnetic levitation 180 from water flow impact or collision with the scraper 310 during subsequent cleaning, and also creates conditions for the movement of the scraper 310 and the smooth drainage of water. After the initial water flow flushing and preliminary cleaning of the inner wall of the cylindrical bore 151, the scraper 310 located inside the cylindrical bore 151 is moved upward to a suitable position by operating the connecting rod 300 that passes through the flange cover 160. Then, water flow is introduced into the cylindrical bore 151 again. This time, the water flow directly impacts the lower end of the scraper 310, using the impact force of the water flow to push the scraper 310 downward along the inner wall of the cylindrical bore 151. Because the outer wall of the scraper 310 fits tightly against the inner wall of the bore 151, it can thoroughly scrape away impurities that have not completely detached after the initial rinsing and are stubbornly attached to the inner wall of the bore 151 during its downward movement. This combined cleaning method of rinsing followed by scraping effectively compensates for the potential cleaning blind spots and incomplete cleaning that may occur with single-flow rinsing, ensuring that every part of the inner wall of the bore 151 is thoroughly cleaned. This further improves the cleaning effect and lays a solid foundation for the long-term stable operation of the liquid level detection system.

[0037] It should be noted that both indicator 140 and water pump 230 mentioned in the text are existing technologies. Water pump 230, model ISG15-80, works by using centrifugal force generated by a high-speed rotating impeller to transport liquid. When the pump is full of liquid, the impeller rotates rapidly under the drive of the motor, and the liquid between the blades is thrown towards the outer edge of the impeller by centrifugal force, collected through the flow channel of the volute pump casing, and discharged from the outlet pipe. Indicator 140 works by using a bypass tube containing a magnetic float as its measuring body. When the liquid level in the container changes, the float rises and falls synchronously with the liquid level. The indicator 140 consists of a set of closely arranged small chambers containing bicolor magnetic flip plates, each flip plate being a small magnetic column. Under the influence of the magnetic field generated by the magnet inside the float, when the float moves with the liquid level to the position of a certain flip plate, the magnetic field drives that flip plate to rotate 180°, thereby changing the color it displays. Normally, one side of the flap is red and the other side is white. As the liquid level rises and falls, the flap where the float passes will be red, while the part above the liquid level will remain white. This creates a clear red and white interface on the indicator 140, which accurately corresponds to the actual liquid level in the container.

[0038] In addition, all components designed in this utility model are general standard parts or components known to those skilled in the art. Their structure and principle can be learned by those skilled in the art through technical manuals or conventional experimental methods. Those skilled in the art can fully implement them, so there is no need to elaborate. The content protected by this utility model does not involve improvements to the internal structure and method.

[0039] The embodiments disclosed herein are preferred embodiments, but are not limited thereto. Those skilled in the art can readily grasp the spirit of this utility model based on the above embodiments and make different extensions and variations. However, as long as they do not depart from the spirit of this utility model, they are all within the protection scope of this utility model.

Claims

1. A plastic tank capable of recording an internal solution, comprising a plastic tank body (100), characterized in that, A liquid level gauge cylinder (150) is detachably installed at the end of the plastic bucket body (100). A cylinder hole (151) is opened at the upper end of the liquid level gauge cylinder (150), and a magnetic float (180) is placed in the cylinder hole (151). A flange cover (170) is detachably installed at the lower end of the liquid level gauge cylinder (150). A flange cover (160) is detachably installed at the upper end of the liquid level gauge cylinder (150). A scraper (310) is inserted into the cylinder hole (151). A connecting rod (300) is connected to the upper end of the scraper (310). The top end of the connecting rod (300) passes through the flange cover (160). The flange cover (160) is equipped with a pipe (240) at its upper end. The pipe (240) is connected to an annular pipe (200) at its upper end. The annular pipe (200) is connected to a first flexible hose (210) at its upper end. The first flexible hose (210) is connected to a water pump (230) at its end. The water pump (230) is connected to a second flexible hose (220) at its upper end. The second flexible hose (220) is connected to an external water storage tank at its end. When it is necessary to clean the inside of the cylinder hole (151), the water pump is started and water is introduced into the cylinder hole through the second hose, the first hose, the first pipe (240), the second pipe (250) and the annular pipe (200), so that the inside of the cylinder hole can be flushed. At the same time, the flushing can press down the scraper, and the scraper can scrape off the impurities adhering to the inner wall of the cylinder hole.

2. A plastic tank capable of recording the internal solution as claimed in claim 1, characterized in that, The upper end of the plastic bucket body (100) is threaded with a bucket lid (120). The upper and lower ends of the outer wall of the plastic bucket body (100) are respectively connected to a first connecting pipe (110). The upper and lower ends of the outer wall of the liquid level gauge cylinder (150) are respectively connected to a second connecting pipe (130). The first connecting pipe (110) and the second connecting pipe (130) are detachably connected.

3. A plastic tank capable of recording the internal solution as claimed in claim 2, characterized in that, An indicator (140) is installed at the end of the liquid level gauge cylinder (150) away from the second connecting pipe (130), and the indicator (140) is provided with multiple magnetic flip plates.

4. The plastic tank capable of recording the internal solution according to claim 1, wherein, The flange cover (160) has a circular hole (161) at the center of its upper end. A sealing ring (190) is installed on the inner wall of the circular hole (161). The top end of the connecting rod (300) passes through the sealing ring (190), and the outer wall of the connecting rod (300) fits tightly with the inner wall of the sealing ring (190).

5. A plastic tank capable of recording the internal solution as claimed in claim 1, wherein, The outer wall of the scraper (310) is fitted to the inner wall of the cylindrical hole (151), and a groove (311) is provided at the lower end of the scraper (310), and the groove (311) is in the shape of a frustum.

6. A plastic tank capable of recording the internal solution as claimed in claim 4, wherein, The cylindrical hole (151), the first round hole (161), the connecting rod (300), and the scraper (310) are coaxial with the vertical axis.

7. A plastic tank capable of recording the internal solution as claimed in claim 1, wherein, The flange cover (160) has multiple mounting holes arranged in a ring array at its upper end, and pipes (240) are installed in the multiple mounting holes respectively. Pipes (240) are connected to the ring pipe (200). Pipes (250) are installed at the upper end of the ring pipe (200), and the end of the first hose (210) away from the water pump (230) is connected to pipes (250).

Images