A hazardous chemical storage tank bottom residual liquid collecting and discharging device

Abstract

The application discloses a kind of dangerous chemical storage tank tank bottom residual liquid collection and discharge device, it is related to dangerous chemical storage tank technical field, and it includes bottom plate, the device further includes: vertical plate, it is set to two, the bottom end of two described vertical plate is fixedly installed in the top of bottom plate, the top of two vertical plates is fixedly installed with same tank body, the left side of tank body is fixedly connected with feed pipe, the top of feed pipe is threadedly connected with sealing cover, the bottom of tank body is fixedly connected with discharge pipe, valve and discharge pump are respectively fixedly installed on discharge pipe, the present application is driven by fifth electric push rod, and the hook is clamped to realize tank cover quick locking, positioning rod is inserted into positioning sleeve to prevent misplacement, the installation of clamping rod and clamping groove in cleaning assembly makes scraper disc and scraper plate can be disassembled and washed to avoid residual liquid residue, collection box is lifted by fourth electric push rod and is connected with discharge pipe to collect residual liquid, handle is convenient to carry, solve the problem of incomplete cleaning and inconvenient collection.

Description

Technical Field

[0001] This invention relates to the field of hazardous chemical storage tank technology, and in particular to a device for collecting and discharging residual liquid at the bottom of a hazardous chemical storage tank. Background Technology

[0002] Hazardous chemical storage tanks are specialized equipment used for storing and managing hazardous chemicals. The materials used in these tanks need to have good corrosion resistance and pressure resistance; commonly used materials include stainless steel, carbon steel, and polyethylene, to meet the storage requirements of different chemicals. The design of the tanks must comply with relevant national and regional standards and regulations to ensure their safety during use. Storage tanks are generally designed with leak-proof and seepage-resistant features, and some tanks are equipped with leak detection systems at the bottom to promptly detect and handle leaks.

[0003] In the prior art, Chinese patent application number 202420573445.8 discloses a rapid discharge device for the bottom of a waste catalyst storage tank, specifically relating to the field of catalyst storage tank technology. The device includes a storage tank with an inlet pipe on one side and a discharge pipe at the bottom. Multiple support legs are located at the bottom of the storage tank, and a cylinder is located at the top. One end of the cylinder extends into the interior of the storage tank and is equipped with a scraping mechanism. The scraping mechanism includes a scraper at one end of the cylinder, the scraper having a right-angled triangular cross-section. A motor is located at the bottom of the scraper, and a rotating shaft is located at the output end of the motor. A connecting plate is located at one end of the rotating shaft, and two connecting blocks are located at the bottom of the connecting plate. This invention effectively cleans the storage tank and improves the efficiency of waste catalyst discharge. It also features a simple overall structure, ease of operation for workers, and the ability to avoid waste catalyst residue and reduce waste catalyst waste.

[0004] However, the above-mentioned technical solutions have the drawbacks. Although they can clean the catalyst at the bottom of the tank, the inside of the tank is not easy to clean after cleaning. Some catalyst will remain on the scraper and cleaning pad, which is not convenient for subsequent storage of the catalyst in the tank. In addition, the cleaned catalyst is not easy to collect, which cannot meet the usage requirements. Therefore, this application proposes a device for collecting and discharging residual liquid at the bottom of hazardous chemical storage tanks to solve the above problems. Summary of the Invention

[0005] The purpose of this application is to provide a device for collecting and discharging residual liquid at the bottom of hazardous chemical storage tanks, in order to solve the problems mentioned in the background art, which, although capable of cleaning the catalyst at the bottom of the tank, make it difficult to clean the inside of the tank after cleaning, leaving some catalyst residue on the scraper and cleaning pad, which is not convenient for subsequent catalyst storage in the tank. In addition, the cleaned catalyst is not easy to collect, thus failing to meet the usage requirements.

[0006] To achieve the above objectives, this application provides the following technical solution: a device for collecting and discharging residual liquid at the bottom of a hazardous chemical storage tank, comprising a bottom plate, and the device further comprising: The upright plate is configured as two, and the bottom ends of the two upright plates are fixedly installed on the top of the base plate. The top of the two upright plates are fixedly installed with the same tank. The left side of the tank is fixedly connected to the feed pipe, and the top of the feed pipe is threaded with a sealing cap. The bottom of the tank is fixedly connected to the discharge pipe, and a valve and a discharge pump are fixedly installed on the discharge pipe respectively. The top of the tank is placed with a tank cover. The fastening assembly includes: three fifth electric push rods, a slip ring, a rotating ring, three lower hooks, and three upper hooks. The three fifth electric push rods are all fixedly installed on the outside of the tank body. The slip ring is slidably sleeved on the tank body. The output shafts of the three fifth electric push rods are all fixedly installed at the bottom of the slip ring. The rotating ring is rotatably connected to the top of the slip ring. The bottom ends of the three lower hooks are all fixedly installed at the top of the rotating ring. The three upper hooks are all fixedly installed on the outside of the tank cover. The upper hooks are engaged with the corresponding lower hooks. A cleaning component is disposed inside the tank lid and is used to clean residual liquid from the inside of the tank. The collection mechanism is located on the top of the bottom plate and cooperates with the bottom end of the discharge pipe. The collection mechanism is used to collect chemical residues inside the tank.

[0007] With the above structure, by setting up a discharge pipe at the bottom of the tank and installing a discharge pump and valve, the residual liquid at the bottom of the tank can be actively extracted. The three fifth electric push rods in the fastening assembly push the slip ring and rotating ring to rise and fall. When the lower hook rises with the rotating ring, it locks with the upper hook, quickly locking or loosening the tank cover and the tank body. This solves the problem of cumbersome bolt disassembly and assembly in traditional methods. The cleaning assembly extends from inside the tank cover into the tank body to scrape and clean the bottom and side walls, reducing residual liquid residue on the scraper and avoiding affecting subsequent storage. The collection mechanism is placed below the discharge pipe to collect the extracted residual liquid for easy subsequent processing. The entire device achieves rapid opening and closing of the tank cover, efficient cleaning inside the tank, and orderly collection of residual liquid, overcoming the shortcomings of incomplete cleaning and inconvenient collection in the prior art.

[0008] Preferably, a positioning rod is fixedly installed on one side of each of the three upper hooks, and three positioning sleeves are fixedly installed on the outside of the can body. The bottom end of the positioning rod can be detached and inserted into the corresponding positioning sleeve. By fixing the positioning rod on one side of each of the three upper hooks and fixing the three positioning sleeves on the outside of the can body, the bottom end of the positioning rod can be detached and inserted into the corresponding positioning sleeve. When the fifth electric push rod pushes the slip ring and rotating ring to rise and lock the lower hook and upper hook together, the positioning rod simultaneously inserts into the positioning sleeve, providing circumferential positioning for the can lid and preventing the can lid from rotating during the tightening process, which would cause the hook to misalign. At the same time, the cooperation between the positioning rod and the positioning sleeve also bears part of the lateral load of the can lid, reducing the force on the hook and making the tightening more stable and reliable. When it is necessary to open the can lid, the slip ring descends to disengage the lower hook and upper hook, and the positioning rod simultaneously withdraws from the positioning sleeve, so the can lid can be removed. This double-locking structure improves the safety and sealing of the can lid.

[0009] Preferably, the cleaning assembly includes a first electric push rod, a frame, a rectangular rod, a motor, a scraper, a connecting rod, and two scrapers. The first electric push rod is fixedly installed on the top of the tank lid. The top of the frame is fixedly installed on the output shaft of the first electric push rod. The bottom end of the rectangular rod is fixedly installed on the top of the motor. The top end of the rectangular rod penetrates the bottom of the frame and contacts the inner wall of the top of the frame. The output shaft of the motor is fixedly installed on the top of the scraper. The connecting rod is fixedly installed on the inner wall of the scraper. The two ends of the connecting rod are respectively fixedly installed on the two scrapers. An installation assembly is provided inside the frame. The installation assembly cooperates with the rectangular rod. By activating the first electric push rod, the frame and motor are pushed down. The motor drives the scraper and scrapers to rotate. The scrapers closely adhere to the inner wall and bottom of the tank to scrape the residual liquid toward the discharge pipe inlet. The scraper rotates at the bottom to further gather the residual liquid. The installation assembly between the rectangular rod and the frame can be quickly disassembled and assembled. After cleaning, the cleaning assembly can be removed for separate cleaning to avoid residual catalyst on the scraper affecting the next use. This detachable rotating scraping structure cleans more thoroughly and is easier to maintain than the fixed scraper, solving the problem of scraper residue in the prior art.

[0010] Preferably, the mounting assembly includes two locking rods, two springs, and two fixing plates. One end of each locking rod passes through one side of the frame and is slidably connected to the inner wall of one side of the frame. Two slots are provided on the rectangular rod, allowing the locking rod to detach and engage with the corresponding slot. The ends of the two springs, close to each other, are fixedly mounted on the two locking rods. The bottom ends of the two fixing plates are fixedly mounted on the bottom inner wall of the frame, and one end of each spring is fixedly mounted on the corresponding fixing plate. Under the elastic force of the springs, the locking rods automatically insert into the slots and lock the rectangular rods within the frame. When disassembly is required, the locking rods are pulled outward to overcome the spring force and disengage from the slots, allowing the motor and cleaning assembly to be removed as a whole. This snap-fit ​​mounting structure allows for quick disassembly and assembly without tools, facilitating thorough cleaning or replacement of the scraper and scraper blades, avoiding cross-contamination caused by cleaning pad residue. At the same time, the springs provide self-locking force to prevent loosening due to vibration during operation.

[0011] Preferably, a first sliding groove is provided on one inner wall of the frame, and one end of each of the two locking rods is slidably connected in the first sliding groove. By providing a first sliding groove on one inner wall of the frame, and slidably connecting one end of each of the two locking rods in the first sliding groove, when the operator pulls the locking rod to remove it from the slot, the end of the locking rod slides smoothly along the first sliding groove. The first sliding groove provides precise linear guidance for the locking rod, preventing the locking rod from deviating or getting stuck during movement, ensuring that the two locking rods can be inserted into or removed from the slot synchronously and smoothly. The first sliding groove also limits the maximum stroke of the locking rod, avoiding damage caused by excessive stretching of the spring due to excessive pulling. At the same time, the guiding effect of the sliding groove keeps the installation component easy to operate and accurately positioned during long-term use, improving the convenience and reliability of cleaning and disassembling the component.

[0012] Preferably, a sliding hole is provided on one side of the frame, and one end of each of the two locking rods passes through the sliding hole and is slidably connected to the inner wall of the sliding hole. By providing additional guidance and support for the locking rods through the sliding hole on one side of the frame, and forming a double-point guide together with the first sliding groove, the locking rods are more stable when moving horizontally, preventing sagging or back-and-forth swaying due to their long length. The inner wall of the sliding hole is smooth and has an appropriate clearance with the locking rods, ensuring smooth sliding and reducing clearance play. At the same time, the through-hole design of the sliding hole allows the operator to directly pull the end of the locking rod from outside the frame, making operation more convenient. This perforated guide structure improves the overall rigidity and operating feel of the installation components and reduces the risk of locking rod jamming.

[0013] Preferably, two second electric push rods are fixedly installed on one side of the frame. A common limiting rod is fixedly installed on the output shaft of each of the two second electric push rods. The top ends of the limiting rod contact the opposite sides of the two locking rods. A third electric push rod is fixedly installed at the bottom of the limiting rod. A pressing block is fixedly installed on the output shaft of the third electric push rod, and the pressing block cooperates with each of the two locking rods. By fixing two second electric push rods to one side of the frame, with the same limiting rod fixed on their output shafts, the top ends of the limiting rod contacting the two locking rods, and the third electric push rod fixed at the bottom of the limiting rod, with the pressing block fixed on its output shaft, when locking is required, the second electric push rod pushes the limiting rod to block the locking rods, preventing accidental disengagement. When disassembly is required, the third electric push rod pushes the pressing block to simultaneously push the two locking rods outward, achieving electric unlocking without manual pulling. This electric control method automates the assembly and disassembly of the cleaning components, making it particularly suitable for situations where harmful gases are present inside the tank or where personnel cannot easily access it, improving operational safety. Furthermore, electric locking is more reliable than spring self-locking, preventing loosening due to vibration.

[0014] Preferably, the collection mechanism includes a fourth electric push rod, a support plate, a collection box, and two handles. The fourth electric push rod is fixedly installed on the top of the base plate, and the bottom of the support plate is fixedly installed on the output shaft of the fourth electric push rod. The collection box is placed on top of the support plate, and the top inlet of the collection box is matched with the discharge pipe. The two handles are fixedly installed on the left and right sides of the collection box, respectively. By activating the fourth electric push rod, the support plate is raised and lowered, so that the inlet of the collection box is aligned with the outlet of the discharge pipe. The discharge pump draws the residual liquid at the bottom of the tank into the collection box through the discharge pipe. After collection is completed, the fourth electric push rod lowers the support plate, and the operator can hold the handles to move the collection box away for subsequent processing. This liftable collection platform is adaptable to discharge pipes of different heights, and the collection box can be transported as a whole, solving the problem of inconvenient residual liquid collection in the prior art. The two handles facilitate safe manual handling, avoid direct contact with corrosive residual liquid, and improve the safety and convenience of the collection process.

[0015] Preferably, the top of the support plate has a groove, and the bottom of the collection box is placed inside the groove. By creating a groove on the top of the support plate and placing the bottom of the collection box inside the groove, the shape of the groove matches the contour of the bottom of the collection box. When the collection box is placed on the support plate, the groove acts as a limit and anti-slip mechanism, preventing the collection box from slipping off the support plate during lifting or when residual liquid impacts. The groove also ensures that the inlet of the collection box is automatically aligned with the discharge pipe each time it is placed, eliminating the need for repeated adjustments. This positioning groove structure makes the placement of the collection box stable and accurate, reducing residual liquid leakage caused by misalignment. It also makes it easy for operators to quickly put the collection box back in the correct position, improving the efficiency and reliability of the collection operation.

[0016] Preferably, two stabilizing rods are fixedly installed on the top of the support plate, and a second sliding groove is provided on each of the two upright plates. The ends of the two stabilizing rods that are far apart from each other are slidably connected in the two second sliding grooves. By fixing the two stabilizing rods on the top of the support plate and providing a second sliding groove on each of the two upright plates, the fourth electric push rod is slidably connected in the two second sliding grooves. When the fourth electric push rod pushes the support plate to rise or fall, the stabilizing rods slide synchronously along the second sliding grooves, providing vertical guidance for the support plate and preventing the support plate from swaying back and forth or tilting left and right during the lifting process. This ensures that the inlet of the collection box is always directly opposite the outlet of the discharge pipe, avoiding residual liquid splashing due to the tilt of the support plate. At the same time, the cooperation between the stabilizing rods and the second sliding grooves also bears part of the weight of the support plate and the collection box, reducing the lateral load on the fourth electric push rod, making the lifting action more stable and reliable, and improving the long-term stability and safety of the collection mechanism.

[0017] The beneficial effects of this invention are: 1. By setting up a discharge pipe at the bottom of the tank and installing a discharge pump and valve, the residual liquid at the bottom of the tank can be actively extracted. The three fifth electric push rods in the fastening assembly push the slip ring and rotating ring to rise and fall. When the lower hook rises with the rotating ring, it locks with the upper hook, quickly locking or loosening the tank cover and the tank body. This solves the problem of cumbersome bolt disassembly and assembly in traditional methods. The cleaning assembly extends into the tank body from inside the tank cover to scrape and clean the bottom and side walls, reducing residual liquid residue on the scraper and avoiding affecting subsequent storage. The collection mechanism is placed below the discharge pipe to collect the extracted residual liquid for easy subsequent processing. The entire device achieves rapid opening and closing of the tank cover, efficient cleaning inside the tank, and orderly collection of residual liquid, overcoming the defects of incomplete cleaning and inconvenient collection in the existing technology. 2. By activating the first electric push rod, the frame and motor are lowered. The motor drives the scraper and scraper plate to rotate. The scraper plate closely adheres to the inner wall and bottom of the tank to scrape the residual liquid toward the discharge pipe inlet. The scraper plate rotates at the bottom to further gather the residual liquid. The mounting components between the rectangular rod and the frame can be quickly disassembled and assembled. After cleaning, the cleaning components can be removed for separate cleaning to avoid residual catalyst on the scraper affecting the next use. This detachable rotating scraping structure cleans more thoroughly and is easier to maintain than the fixed scraper, solving the problem of scraper residue in the existing technology. 3. Under the elastic force of the spring, the locking rod automatically inserts into the slot to lock the rectangular rod in the frame. When disassembly is required, pull the locking rod outward to overcome the spring force and make it exit the slot, so that the motor and cleaning components can be taken out as a whole. This snap-on installation structure can achieve quick disassembly and assembly without tools, which is convenient for thorough cleaning or replacement of the scraper and scraper, and avoids cross-contamination caused by cleaning pad residue. At the same time, the spring provides self-locking force to prevent loosening due to vibration during operation. 4. By activating the fourth electric push rod, the support plate is raised and lowered, aligning the inlet of the collection box with the outlet of the discharge pipe. The discharge pump draws the residual liquid at the bottom of the tank into the collection box through the discharge pipe. After collection, the fourth electric push rod lowers the support plate, and the operator can move the collection box away by holding the handle for subsequent processing. This liftable collection platform is suitable for discharge pipes of different heights, and the collection box can be moved as a whole, solving the problem of inconvenient residual liquid collection in the existing technology. The two handles facilitate safe manual handling, avoiding direct contact with corrosive residual liquid, and improving the safety and convenience of the collection process. This invention achieves rapid locking of the can lid by driving the lower and upper hooks to lock together via the fifth electric push rod. The positioning rod is inserted into the positioning sleeve to prevent misalignment. The snap-fit ​​installation of the clamp rod and slot in the cleaning component allows the scraper and scraper to be disassembled for cleaning to avoid residual liquid. The collection box is lifted and connected to the discharge pipe via the fourth electric push rod to collect residual liquid. The handle makes it easy to move, solving the problems of incomplete cleaning and inconvenient collection. Attached Figure Description

[0018] Figure 1 This is a three-dimensional front view of the structure according to an embodiment of this application; Figure 2 This is a three-dimensional rear view of the structure according to an embodiment of this application; Figure 3 This is a three-dimensional structural view of the can lid according to an embodiment of this application; Figure 4 This is a three-dimensional structural view of the first electric push rod, frame, rectangular rod, locking rod, first slide groove, spring, fixing plate, slide hole, second electric push rod, limiting rod, third electric push rod and motor according to an embodiment of this application; Figure 5 This is a three-dimensional structural view of the rectangular rod, slot, rod, spring, and fixing plate according to an embodiment of this application. Figure 6 This is a three-dimensional structural view of the second electric push rod, the limiting rod, the third electric push rod, and the extrusion block according to an embodiment of this application. Figure 7 This is a three-dimensional structural view of the scraper, connecting rod, and scraper blade according to an embodiment of this application; Figure 8 This is a three-dimensional structural view of the base plate, upright plate, fourth electric push rod, support plate, groove, stabilizer rod, second slide, collection box and handle of an embodiment of this application; Figure 9 This is a three-dimensional structural view of the fifth electric push rod, slip ring, rotating ring, and lower hook according to an embodiment of this application; Figure 10 Appendix to the embodiments of this application Figure 1 A schematic diagram of the structure of part A.

[0019] In the diagram: 1. Base plate; 2. Vertical plate; 3. Tank body; 4. Tank lid; 5. Feed pipe; 6. Sealing cap; 7. Discharge pipe; 8. Valve; 9. Discharge pump; 10. First electric push rod; 11. Frame; 12. Rectangular rod; 13. Slot; 14. Locking rod; 15. First slide groove; 16. Spring; 17. Fixing plate; 18. Sliding hole; 19. Second electric push rod; 20. Limiting rod; 21. Third electric push rod; 22. Extrusion block; 23. Motor; 24. Scraper; 25. Connecting rod; 26. Scraper; 27. Fourth electric push rod; 28. Support plate; 29. ​​Groove; 30. Stabilizing rod; 31. Second slide groove; 32. Collection box; 33. Handle; 34. Fifth electric push rod; 35. Slip ring; 36. Rotating ring; 37. Lower hook; 38. Upper hook; 39. Positioning rod; 40. Positioning sleeve. Detailed Implementation

[0020] The present invention will be further explained below with reference to specific embodiments.

[0021] refer to Figures 1-10 This embodiment proposes a device for collecting and discharging residual liquid at the bottom of a hazardous chemical storage tank. The device includes a base plate 1, which serves as the supporting foundation for the entire device. Two vertical plates 2 are fixedly installed on the top of the base plate 1, spaced apart along its length. A tank body 3 is fixedly installed on the top of both vertical plates 2. The tank body 3 is a cylindrical structure used to contain the residual liquid discharged from the hazardous chemical storage tank. An inlet pipe 5 is fixedly connected to the left side of the tank body 3. A sealing cap 6 is threadedly connected to the top of the inlet pipe 5. Tightening the sealing cap 6 seals the inlet pipe 5, preventing residual liquid leakage. A discharge pipe 7 is fixedly connected to the bottom of the tank body 3. A valve 8 and a discharge pump 9 are sequentially fixedly installed on the discharge pipe 7. The valve 8 controls the opening and closing of the discharge pipe 7, and the discharge pump 9 actively extracts the residual liquid from the bottom of the tank body 3. A tank cover 4 is placed on the top of the tank body 3, fitting to the opening of the tank body 3 to seal the top opening.

[0022] The device also includes a fastening assembly for quickly locking or releasing the can lid 4 onto the can body 3. The fastening assembly includes three fifth electric actuators 34, a slip ring 35, a rotating ring 36, three lower hooks 37, and three upper hooks 38. The three fifth electric actuators 34 are fixedly mounted on the outside of the can body 3 and are evenly distributed around the circumference of the can body 3. The slip ring 35 is slidably fitted onto the can body 3, and the output shafts of the three fifth electric actuators 34 are fixedly mounted on the bottom of the slip ring 35. The rotating ring 36 is rotatably connected to the top of the slip ring 35. The bottom ends of the three lower hooks 37 are fixedly mounted on the top of the rotating ring 36. The three upper hooks 38 are fixedly mounted on the outside of the can lid 4, and the upper hooks 38 engage with their corresponding lower hooks 37. When the can lid 4 needs to be locked, the three fifth electric push rods 34 are activated simultaneously, pushing the slip ring 35 to slide upward along the can body 3. The slip ring 35 drives the rotating ring 36 and the three lower hooks 37 to rise synchronously. When the lower hooks 37 rise with the rotating ring 36 to the position aligned with the upper hooks 38, the lower hooks 37 engage with the upper hooks 38, completing the locking of the can lid 4 to the can body 3. When the can lid 4 needs to be opened, the three fifth electric push rods 34 move in the opposite direction, pushing the slip ring 35 downward. The lower hooks 37 disengage from the upper hooks 38, and the can lid 4 can be removed. A positioning rod 39 is fixedly installed on one side of each of the three upper hooks 38, and three positioning sleeves 40 are fixedly installed on the outside of the can body 3. The bottom end of the positioning rod 39 can be detached and inserted into the corresponding positioning sleeve 40. When the fifth electric push rod 34 pushes the slip ring 35 and the rotating ring 36 upward to lock the lower hook 37 and the upper hook 38 together, the positioning rod 39 simultaneously inserts into the positioning sleeve 40 to provide circumferential positioning for the can lid 4, preventing the can lid 4 from rotating during the tightening process and causing the hooks to become misaligned. At the same time, the cooperation between the positioning rod 39 and the positioning sleeve 40 also bears part of the lateral load on the can lid 4, reducing the force on the hooks and making the tightening more stable and reliable. When it is necessary to open the can lid 4, the slip ring 35 descends, causing the lower hook 37 to disengage from the upper hook 38, and the positioning rod 39 simultaneously withdraws from the positioning sleeve 40, allowing the can lid 4 to be removed.

[0023] The tank lid 4 is equipped with a cleaning assembly for cleaning residual liquid from the inside of the tank body 3. The cleaning assembly includes a first electric push rod 10, a frame 11, a rectangular rod 12, a motor 23, a scraper 24, a connecting rod 25, and two scrapers 26. The first electric push rod 10 is fixedly mounted on the top of the tank lid 4. The top of the frame 11 is fixedly mounted on the output shaft of the first electric push rod 10. The bottom end of the rectangular rod 12 is fixedly mounted on the top of the motor 23, and the top end of the rectangular rod 12 penetrates the bottom of the frame 11 and contacts the inner wall of the top of the frame 11. The output shaft of the motor 23 is fixedly mounted on the top of the scraper 24. The connecting rod 25 is fixedly mounted on the inner wall of the scraper 24, and both ends of the connecting rod 25 are respectively fixedly mounted on the two scrapers 26. The frame 11 is equipped with an installation assembly that cooperates with the rectangular rod 12. The mounting assembly includes two locking rods 14, two springs 16, and two fixing plates 17. One end of each locking rod 14 passes through one side of the frame 11 and is slidably connected to the inner wall of one side of the frame 11. Two slots 13 are provided on the rectangular rod 12, allowing the locking rod 14 to disengage and engage with the corresponding slots 13. The ends of the two springs 16, close to each other, are fixedly mounted on the two locking rods 14. The bottom ends of the two fixing plates 17 are fixedly mounted on the bottom inner wall of the frame 11, with one end of each spring 16 fixedly mounted on the corresponding fixing plate 17. Under the elastic force of the springs 16, the locking rods 14 automatically insert into the slots 13, locking the rectangular rod 12 within the frame 11. To disassemble, the locking rods 14 are pulled outwards to overcome the elastic force of the springs 16, causing them to disengage from the slots 13, allowing the motor 23 and the cleaning assembly to be removed as a whole. A first groove 15 is provided on one inner wall of the frame 11. One end of each of the two locking rods 14 is slidably connected to the first groove 15. When the operator pulls the locking rod 14 to disengage it from the locking slot 13, the end of the locking rod 14 slides smoothly along the first groove 15. The first groove 15 provides precise linear guidance for the locking rod 14, preventing it from deviating or jamming during movement. At the same time, the first groove 15 also limits the maximum stroke of the locking rod 14, avoiding damage to the spring 16 due to excessive stretching caused by excessive pulling. A sliding hole 18 is provided on one side of the frame 11. One end of each of the two locking rods 14 passes through the sliding hole 18 and is slidably connected to the inner wall of the sliding hole 18. The sliding hole 18 provides additional guidance and support for the locking rod 14, forming a double-point guide together with the first groove 15, making the locking rod 14 more stable when moving horizontally. The through-hole design of the sliding hole 18 allows the operator to directly pull the end of the locking rod 14 from outside the frame 11. Two second electric push rods 19 are fixedly installed on one side of the frame 11. The same limiting rod 20 is fixedly installed on the output shaft of the two second electric push rods 19. The top two ends of the limiting rod 20 are respectively in contact with the opposite sides of the two clamping rods 14. A third electric push rod 21 is fixedly installed at the bottom of the limiting rod 20. A pressing block 22 is fixedly installed on the output shaft of the third electric push rod 21. The pressing block 22 cooperates with the two clamping rods 14 respectively.When locking is required, the second electric push rod 19 pushes the limit rod 20 to block the locking rod 14 to prevent it from accidentally disengaging. When disassembly is required, the third electric push rod 21 pushes the squeezing block 22 to push the two locking rods 14 outwards at the same time, realizing electric unlocking without manual pulling.

[0024] The cleaning assembly operates as follows: The first electric push rod 10 is activated to lower the frame 11 and motor 23. A rectangular rod 12 penetrates the bottom of the frame 11 and contacts the top inner wall of the frame 11. The motor 23 drives the scraper disc 24 and scraper blade 26 to rotate. The scraper blade 26 scrapes the residual liquid against the inner wall and bottom of the tank 3 towards the inlet of the discharge pipe 7. The scraper disc 24 rotates at the bottom to further gather the residual liquid. Under the combined action of the scraper blade 26 and scraper disc 24, the residual liquid is concentrated and guided to the inlet of the discharge pipe 7. When the cleaning assembly needs to be disassembled for cleaning, the operator pulls the two locking rods 14 outwards. The locking rods 14 slide synchronously along the first sliding groove 15 and sliding hole 18 and exit the locking groove 13. The spring 16 is compressed, and the entire assembly consisting of the motor 23, scraper disc 24, connecting rod 25, and two scraper blades 26 can be removed from the frame 11. Alternatively, the third electric push rod 21 can be activated to push the squeezing block 22, simultaneously ejecting the two locking rods 14, achieving electric unlocking. The second electric push rod 19 can push the limit rod 20 to block the locking rod 14 in the working state, preventing the locking rod 14 from accidentally disengaging from the slot 13 due to vibration.

[0025] A collection mechanism is provided on the top of the base plate 1, which cooperates with the bottom end of the discharge pipe 7 to collect chemical residues inside the tank 3. The collection mechanism includes a fourth electric push rod 27, a support plate 28, a collection box 32, and two handles 33. The fourth electric push rod 27 is fixedly installed on the top of the base plate 1, and the bottom of the support plate 28 is fixedly installed on the output shaft of the fourth electric push rod 27. The collection box 32 is placed on top of the support plate 28, and the top inlet of the collection box 32 cooperates with the discharge pipe 7. The two handles 33 are fixedly installed on the left and right sides of the collection box 32, respectively. A groove 29 is formed on the top of the support plate 28, and the bottom of the collection box 32 is placed inside the groove 29. The shape of the groove 29 matches the bottom contour of the collection box 32. When the collection box 32 is placed on the support plate 28, the groove 29 limits its position and prevents slippage, while ensuring that the inlet of the collection box 32 is automatically aligned with the discharge pipe 7 each time it is placed. Two stabilizing rods 30 are fixedly installed on the top of the support plate 28. The two upright plates 2 are each provided with a second sliding groove 31. The ends of the two stabilizing rods 30 that are far apart from each other are slidably connected in the two second sliding grooves 31. When the fourth electric push rod 27 pushes the support plate 28 to rise or fall, the stabilizing rods 30 slide synchronously along the second sliding grooves 31 to provide vertical guidance for the support plate 28 and prevent the support plate 28 from swaying back and forth or tilting left and right during the rising and falling process.

[0026] The working process of the collection mechanism is as follows: The fourth electric push rod 27 is activated to push the support plate 28 upward. The collection box 32 rises with the support plate 28 until its inlet aligns with the outlet of the discharge pipe 7. The discharge pump 9 then pumps the residual liquid at the bottom of the tank into the collection box 32 through the discharge pipe 7. After collection is completed, the fourth electric push rod 27 lowers the support plate 28. The operator holds the two handles 33 and removes the collection box 32 from the support plate 28 for further processing. The groove 29 ensures the stability and positioning accuracy of the collection box 32 during placement. The sliding of the stabilizing rod 30 along the second slide groove 31 provides reliable guidance for the lifting process, preventing residual liquid from splashing out due to tilting of the collection box 32 during lifting.

[0027] It should be noted that the specific models of the discharge pump 9, the first electric push rod 10, the second electric push rod 19, the third electric push rod 21, the motor 23, the fourth electric push rod 27, and the fifth electric push rod 34 used can be selected by those skilled in the art. Furthermore, the discharge pump 9, the first electric push rod 10, the second electric push rod 19, the third electric push rod 21, the motor 23, the fourth electric push rod 27, and the fifth electric push rod 34 mentioned above are all existing technologies and will not be elaborated upon in this solution. Additionally, all identical drive devices in this application are controlled by the same synchronizer.

[0028] Working principle: In use, first connect the discharge pump 9, the first electric push rod 10, the second electric push rod 19, the third electric push rod 21, the motor 23, the fourth electric push rod 27, and the fifth electric push rod 34 to an external power source. Then, place the can lid 4 at the top opening of the can body 3 and start the three fifth electric push rods 34. The three fifth electric push rods 34 push the slip ring 35 to slide upward along the can body 3. The slip ring 35 drives the rotating ring 36 and the three lower hooks 37 to rise synchronously. When the lower hooks 37 rise with the rotating ring 36 to the position aligned with the upper hook 38, they engage with the upper hook 38. At the same time, the positioning rod 39 is inserted into the positioning sleeve 40, completing the locking of the can lid 4 and the can body 3. After locking, open the valve 8 and start the discharge pump 9. The discharge pump 9 discharges the can body through the discharge pipe 7. The residual liquid at the bottom of tank 3 is actively extracted. Simultaneously, the first electric push rod 10 is activated, pushing the frame 11 and motor 23 down along the rectangular rod 12 into the tank 3. The motor 23 drives the scraper 24 and two scraper blades 26 to rotate. The two scraper blades 26, adhering closely to the inner wall and bottom of the tank 3, scrape the residual liquid towards the inlet of the discharge pipe 7. The scraper 24 rotates at the bottom to further gather the residual liquid. Under the combined action of the scraper blades 26 and scraper 24, the residual liquid is concentrated and guided to the inlet of the discharge pipe 7 and extracted by the discharge pump 9. The residual liquid flows through the discharge pipe 7 into the collection tank 32 below. Simultaneously, the fourth electric push rod 27 is activated, pushing the support plate 28 upward. The support plate 28 causes the collection tank 32 to rise until its inlet aligns with the outlet of the discharge pipe 7, allowing the residual liquid to flow smoothly. The material enters the collection box 32. During the collection process, the stabilizing rod 30 slides synchronously along the second sliding groove 31 on the two upright plates 2 to provide vertical guidance for the support plate 28. The bottom of the collection box 32 is placed in the groove 29 on the top of the support plate 28 to achieve automatic centering. After collection is completed, the valve 8 is closed, the discharge pump 9 and motor 23 are stopped, and the three fifth electric push rods 34 are started to run in reverse to push the slip ring 35 down. The lower hook 37 disengages from the upper hook 38, and the positioning rod 39 simultaneously exits from the positioning sleeve 40. The tank cover 4 is removed, and the fourth electric push rod 27 is started to lower the support plate 28. The operator holds the two handles 33 on both sides of the collection box 32 to remove the collection box 32 from the support plate 28 for subsequent processing. When the cleaning components need maintenance and cleaning, the two... The second electric push rod 19 moves the limiting rod 20 away from the clamping rod 14. Then, the third electric push rod 21 is activated to push the squeezing block 22 to push the two clamping rods 14 outwards simultaneously. The two clamping rods 14 slide out of the clamping slot 13 along the first sliding groove 15 and the sliding hole 18. The spring 16 is compressed. The whole assembly consisting of the motor 23, scraper 24, connecting rod 25 and two scrapers 26 can be removed from the frame 11 for separate cleaning. After cleaning, the motor 23 and the cleaning assembly are reinserted into the frame 11. The clamping rods 14 automatically snap into the clamping slot 13 under the elastic force of the spring 16 to complete the installation. Alternatively, the two clamping rods 14 can be manually pulled outwards to remove them from the clamping slot 13 and the cleaning assembly can be removed. When the assembly is put back after cleaning, the clamping rods 14 automatically reset and snap into the clamping slot 13 under the action of the spring 16.

[0029] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A device for collecting and discharging residual liquid at the bottom of a hazardous chemical storage tank, comprising a bottom plate (1), characterized in that, The device also includes: There are two upright plates (2), the bottom ends of the two upright plates (2) are fixedly installed on the top of the base plate (1), the top of the two upright plates (2) are fixedly installed with the same tank (3), the left side of the tank (3) is fixedly connected to the feed pipe (5), the top of the feed pipe (5) is threadedly connected to the sealing cap (6), the bottom of the tank (3) is fixedly connected to the discharge pipe (7), the discharge pipe (7) is fixedly installed with a valve (8) and a discharge pump (9), and the top of the tank (3) is placed with a tank cover (4). The fastening assembly includes: three fifth electric push rods (34), a slip ring (35), a rotating ring (36), three lower hooks (37) and three upper hooks (38). The three fifth electric push rods (34) are all fixedly installed on the outside of the tank body (3). The slip ring (35) is slidably sleeved on the tank body (3). The output shafts of the three fifth electric push rods (34) are all fixedly installed on the bottom of the slip ring (35). The rotating ring (36) is rotatably connected to the top of the slip ring (35). The bottom ends of the three lower hooks (37) are all fixedly installed on the top of the rotating ring (36). The three upper hooks (38) are all fixedly installed on the outside of the tank cover (4). The upper hooks (38) are engaged with the corresponding lower hooks (37). A cleaning component is disposed inside the tank lid (4) and is used to clean residual liquid inside the tank body (3); The collection mechanism is located on the top of the bottom plate (1) and is coordinated with the bottom end of the discharge pipe (7). The collection mechanism is used to collect the chemical residue inside the tank (3).

2. The device for collecting and discharging residual liquid at the bottom of a hazardous chemical storage tank according to claim 1, characterized in that, Positioning rods (39) are fixedly installed on one side of each of the three hooks (38), and three positioning sleeves (40) are fixedly installed on the outside of the tank body (3). The bottom end of the positioning rod (39) can be disengaged and inserted into the corresponding positioning sleeve (40).

3. The device for collecting and discharging residual liquid at the bottom of a hazardous chemical storage tank according to claim 1, characterized in that, The cleaning assembly includes a first electric push rod (10), a frame (11), a rectangular rod (12), a motor (23), a scraper (24), a connecting rod (25), and two scrapers (26). The first electric push rod (10) is fixedly installed on the top of the can lid (4). The top of the frame (11) is fixedly installed on the output shaft of the first electric push rod (10). The bottom end of the rectangular rod (12) is fixedly installed on the top of the motor (23). The top end of the rectangular rod (12) penetrates the bottom of the frame (11) and contacts the inner wall of the top of the frame (11). The output shaft of the motor (23) is fixedly installed on the top of the scraper (24). The connecting rod (25) is fixedly installed on the inner wall of the scraper (24). The two ends of the connecting rod (25) are respectively fixedly installed on the two scrapers (26). An installation assembly is provided inside the frame (11), and the installation assembly cooperates with the rectangular rod (12).

4. The device for collecting and discharging residual liquid at the bottom of a hazardous chemical storage tank according to claim 3, characterized in that, The mounting assembly includes two locking rods (14), two springs (16), and two fixing plates (17). One end of each locking rod (14) passes through one side of the frame (11) and is slidably connected to the inner wall of one side of the frame (11). Two slots (13) are provided on the rectangular rod (12). The locking rods (14) can be disengaged and locked into the corresponding slots (13). The ends of the two springs (16) that are close to each other are fixedly installed on the two locking rods (14). The bottom ends of the two fixing plates (17) are fixedly installed on the bottom inner wall of the frame (11). One end of the spring (16) is fixedly installed on the corresponding fixing plate (17).

5. The device for collecting and discharging residual liquid at the bottom of a hazardous chemical storage tank according to claim 4, characterized in that, A first groove (15) is provided on one inner wall of the frame (11), and one end of each of the two levers (14) is slidably connected in the first groove (15).

6. The device for collecting and discharging residual liquid at the bottom of a hazardous chemical storage tank according to claim 4, characterized in that, A sliding hole (18) is provided on one side of the frame (11), and one end of each of the two levers (14) passes through the sliding hole (18) and is slidably connected to the inner wall of the sliding hole (18).

7. The device for collecting and discharging residual liquid at the bottom of a hazardous chemical storage tank according to claim 4, characterized in that, Two second electric push rods (19) are fixedly installed on one side of the frame (11). The same limiting rod (20) is fixedly installed on the output shaft of the two second electric push rods (19). The top two ends of the limiting rod (20) are respectively in contact with the two clamping rods (14) on opposite sides. A third electric push rod (21) is fixedly installed at the bottom of the limiting rod (20). A pressing block (22) is fixedly installed on the output shaft of the third electric push rod (21). The pressing block (22) cooperates with the two clamping rods (14) respectively.

8. The device for collecting and discharging residual liquid at the bottom of a hazardous chemical storage tank according to claim 1, characterized in that, The collection mechanism includes a fourth electric push rod (27), a support plate (28), a collection box (32), and two handles (33). The fourth electric push rod (27) is fixedly installed on the top of the base plate (1), the bottom of the support plate (28) is fixedly installed on the output shaft of the fourth electric push rod (27), the collection box (32) is placed on the top of the support plate (28), the top inlet of the collection box (32) is matched with the discharge pipe (7), and the two handles (33) are fixedly installed on the left and right sides of the collection box (32) respectively.

9. The device for collecting and discharging residual liquid at the bottom of a hazardous chemical storage tank according to claim 8, characterized in that, The top of the support plate (28) is provided with a groove (29), and the bottom of the collection box (32) is placed inside the groove (29).

10. A device for collecting and discharging residual liquid at the bottom of a hazardous chemical storage tank according to claim 8, characterized in that, Two stabilizing rods (30) are fixedly installed on the top of the support plate (28). The two upright plates (2) are provided with second sliding grooves (31). The ends of the two stabilizing rods (30) that are far apart from each other are slidably connected in the two second sliding grooves (31).

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