Waste acid buffer tank for methyl methacrylate device

Abstract

The invention relates to the technical field of methyl methacrylate production equipment, and particularly discloses a waste acid buffer tank for a methyl methacrylate device, which comprises a tank body, a foot stool, a liquid inlet, an exhaust port and a liquid discharge pipe, and is characterized in that a flushing, scraping and washing mechanism is arranged at the top in the tank body; a V-shaped rotating rod is matched to restrain a transmission track, so that the scraping head is accurately positioned to any height of the tank wall; the scraping head structure is driven by double motors to rotate in the circumferential direction and stretch out and draw back in the radial direction, a hinged scraping plate is attached to the conical tank bottom in a self-adaptive mode through a penetrating groove, and a spiral hose conveys flushing fluid synchronously to flush stripped objects in time. The protective bin structure drives an L-shaped groove frame to be in linkage with a door blocking assembly through a motor, and barrier-free unfolding during cleaning and dynamic sealing during closing are achieved. The problems of waste acid scaling, part erosion by corrosive media and high risk of manual tank cleaning are solved, and the device has the advantages of efficient buffering, self-adaptive cleaning, long-acting protection of core parts and compact space deployment.

Description

Technical Field

[0001] The invention relates to the technical field of methyl methacrylate production equipment, in particular to a waste acid buffer tank for a methyl methacrylate device. Background Art

[0002] Methyl methacrylate (MMA) is a key raw material for polymethyl methacrylate (PMMA) monomers and special coatings. Its industrial production mainly adopts the acetone cyanohydrin method. The waste acid generated at the end of this process contains high-concentration sulfuric acid and methacrylic acid polymers, which are highly corrosive, easy to crystallize and temperature-sensitive.

[0003] At present, Chinese patent application number: CN202421104830.4 discloses a waste acid buffer tank for a methyl methacrylate device, including a bracket and a buffer tank, a buffer tank at the top of the bracket, and a buffer tank is arranged at the top of the bracket. The waste acid buffer tank for a methyl methacrylate device also includes: a power device fixedly arranged at the top of the buffer tank; and a cleaning component slidably arranged at the bottom of the power device.

[0004] However, when the waste acid buffer tank in the prior art is in use, it is inconvenient for the fixed scraper to adapt to the changes in the inclination angle of the inner wall and bottom of the tank body, and usually only a mechanical scraper arm is used for cleaning, which affects the cleaning effect of sulfate crystals. In addition, the dynamic sealing protection is poor, and the high-temperature acid mist of the waste liquid can easily corrode the components, affecting the service life of the components, making manual tank cleaning a high-risk and high-frequency maintenance burden. Summary of the Invention

[0005] The object of the present invention is to provide a waste acid buffer tank for a methyl methacrylate device to solve the problems raised in the above background technology.

[0006] The flask is configured to have a bottom surface that is fixed to the top of the flask, and the flask has a bottom surface that is adapted to accommodate the flask's outer surface and a bottom surface that is adapted to accommodate the flask's outer surface.

[0007] Preferably, a heat exchange tube is embedded in the inner wall of the tank body, and a heat exchange liquid inlet pipe and a heat exchange liquid outlet pipe are respectively provided at the upper and lower ends of the heat exchange tube. The heat exchange liquid inlet pipe is arranged through the upper middle side of the tank body, and the heat exchange liquid outlet pipe is arranged through the lower side of the tank body.

[0008] The top end of the lifting gear is connected with the bottom end of the gear to the cylinder, and the bottom end of the gear is connected with the second end of the gear to the cylinder.

[0009] Preferably, a first V-shaped rotating rod is rotatably provided at the right rear part of the first bracket and the second bracket, and the middle connection of the first V-shaped rotating rod is at the same horizontal height as the connection between the power rod and the first gear rotating rod, and a second V-shaped rotating rod is rotatably provided at the right rear part of the second bracket and the third bracket, and the middle connection of the second V-shaped rotating rod is at the same horizontal height as the connection between the second gear rotating rod and the bottom rod.

[0010] The transmission gear of the present invention is a gear which is connected with the transmission gear of the present invention to the gear box, and the transmission gear of the present invention is a gear which is connected with the transmission gear of the present invention to the gear box.

[0011] Preferably, an internal thread block threadably connected to the first screw rod is provided on the left side of the sleeve rod, and convex strips are provided on both the upper and lower sides of the sleeve rod, and both convex strips slide transversely inside the right side of the cover seat.

[0012] Preferably, the second scraper is arranged in an inclined shape, and a through groove is opened on the right side of the second scraper in an inclined shape, and the rotating column at the connection between the first scraper and the second scraper is arranged through the through groove.

[0013] Preferably, the warehouse protection structure includes a warehouse cover and a first door assembly and a second door assembly respectively arranged on the left and right sides of the interior of the warehouse cover. The first door assembly and the second door assembly have the same structure and size and are arranged symmetrically on the left and right sides. A rectangular opening is opened at the bottom of the warehouse cover, and a sealing strip is arranged above the rectangular opening. The top side of the sealing strip is in contact with the first door assembly and the second door assembly respectively.

[0014] Preferably, the second door baffle assembly includes a rectangular seat fixed to the top side of the warehouse cover, a third motor locked and fixed to the inner rear side of the rectangular seat, a second screw connected to the bottom output shaft of the third motor, an L-shaped slot frame fixed to the front of the bottom side of the rectangular seat, a shift block longitudinally slidably connected to the front side of the L-shaped slot frame, a pull rod rotatably connected to the bottom side of the front of the shift block, a first door panel rotatably connected to the bottom side of the rear of the shift block, and a second door panel rotatably connected to the side of the pull rod away from the shift block, an internal thread strip is provided on the upper side of the rear of the shift block, and the inner rear side of the internal thread strip is threadedly connected to the outer surface of the second screw.

[0015] Preferably, the shift block and the second screw are respectively located on the front and rear sides of the interior of the warehouse cover and do not interfere with the movement of the first door panel and the second door panel. A first roller is provided for rotation on the left front part of the first door panel, and a second roller is provided for rotation on the right front part of the second door panel. The first roller and the second roller are both slidably connected to the interior of the L-shaped slot frame.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The present invention is based on the multi-layer transmission of the push structure and the adaptive design of the scraper structure, integrating the functions of mechanical scraping and fluid flushing: the push mechanism drives the scraper to accurately position to any height of the tank wall, the rotating assembly realizes 360° circumferential coverage, and the telescopic scraper automatically fits the wall surfaces with different inclination angles through the hinged structure and the through groove, especially realizing dead-angle scraping for the conical bottom; the synchronously sprayed flushing liquid immediately flushes away the peeling material, completely solving the problem of scaling and blockage caused by highly corrosive waste acid, and greatly reducing the frequency and intensity of equipment maintenance.

[0018] The bin protection structure of the present invention realizes dynamic sealing through the baffle door linkage mechanism: when cleaning, the baffle door is smoothly unfolded along the L-shaped groove frame and stored in the side wall of the bin cover, providing an unobstructed channel for the movement of the scraper head; after the operation is completed, the baffle door is accurately closed and the sealing strip is pressed to form a barrier to isolate high-temperature corrosive media. While ensuring the efficient operation of the flushing, scraping and washing mechanism, the core components such as the gear transmission assembly and the motor are protected from acid mist erosion, which significantly extends the overall service life of the equipment.

[0019] The present invention ensures that the sediment in the waste acid liquid is efficiently collected at the drain port through the coordinated design of the conical tank bottom and the embedded heat exchange tube. At the same time, the heat exchange medium circulates in the tank wall to accurately control the material temperature, fundamentally avoiding the decomposition or crystallization of the waste acid components caused by temperature fluctuations; combined with the exhaust port to dynamically maintain the pressure balance in the tank, the synergistic effect of the three ensures that the physical and chemical properties of the waste acid remain stable during the temporary storage process, providing a safe and reliable buffer environment for downstream processing links.

[0020] The present invention realizes the efficient deployment of multi-functional modules within the limited tank space through the high integration of the flushing, scraping and washing mechanism and the dynamic expansion and contraction mechanism of the protective bin structure: the compact arrangement of the foldable transmission bracket and the spiral hose of the push-type structure significantly compresses the longitudinal occupied space, allowing the cleaning components to be completely stored in the protective bin in the non-working state, creating the possibility of deployment in narrow factory areas. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the present invention;

[0022] Figure 2 It is a schematic diagram of the structure inside the tank body of the present invention;

[0023] Figure 3 It is a structural schematic diagram of the flushing, scraping and washing mechanism of the present invention;

[0024] Figure 4 It is a structural schematic diagram of the push structure of the present invention;

[0025] Figure 5 Schematic diagram of the structure of the scraping head structure of the present invention;

[0026] Figure 6 It is a structural schematic diagram of the bunker protection structure of the present invention;

[0027] Figure 7 It is a schematic diagram of the connection structure of the L-shaped slot frame and the first roller and the second roller of the present invention.

[0028] In the figure: tank body 1, tripod 2, liquid inlet 3, exhaust port 4, drain pipe 5, flushing and scraping mechanism 6, heat exchange liquid inlet pipe 7, heat exchange liquid outlet pipe 8, tank cover 61, ring seat 62, push mechanism 63, flushing liquid pipe 64, scraper structure 65, chamber protection structure 66, carrier frame 631, first bracket 632, cylinder 633, power rod 634, first gear rod 635, second bracket 636, second gear rod 637, bottom rod 638, third bracket 639, spiral hose 6310, first V-shaped rod 6321, second V-shaped rod 6361, disc seat 651, first motor 652, moving gear 65 3. Gear ring 654, cover seat 655, second motor 656, first bevel gear 657, second bevel gear 658, first screw 659, sleeve rod 6510, cover frame 6511, nozzle 6512, first scraper 6513, second scraper 6514, through slot 65141, chamber cover 661, first door assembly 662, second door assembly 663, rectangular seat 6631, third motor 6632, second screw 6633, L-shaped slot frame 6634, shift block 6635, pull rod 6636, first door panel 6637, second door panel 6638, first roller 66371, second roller 66381. DETAILED DESCRIPTION

[0029] In order to further explain the technical solution of the present invention, specific embodiments are described in detail below.

[0030] See also Figure 1 and Figure 2 The present invention provides a waste acid buffer tank for a methyl methacrylate device, comprising a tank body 1, a tripod 2, a liquid inlet 3, an exhaust port 4, a drain pipe 5 and a flushing and scraping washing mechanism 6. The bottom of the tank body 1 is fastened with the tripod 2, and a liquid inlet 3 for receiving waste acid liquid from an upstream process is opened on the middle and upper side of the front of the tank body 1, and an exhaust port 4 is provided on the upper side of the rear of the tank body 1. The bottom of the tank body 1 is conical, and a drain pipe 5 is installed at the bottom of the conical shape to completely discharge the liquid and sediment in the tank body 1. A flushing and scraping washing mechanism 6 for flushing and scraping the inner wall of the tank body 1 is locked and fixed on the upper side of the interior of the tank body 1 to prevent scaling and blockage in the tank body 1. A heat exchange tube is embedded in the inner wall of the tank body 1, and a heat exchange liquid inlet pipe 7 and a heat exchange liquid outlet pipe 8 are respectively provided at the upper and lower ends of the heat exchange tube. The heat exchange liquid inlet pipe 7 is arranged through the middle and upper side of the side of the tank body 1, and the heat exchange liquid outlet pipe 8 is arranged through the lower side of the side of the tank body 1 to allow heat exchange medium to pass through to control the temperature of the material in the tank body 1.

[0031] See also Figure 1 、 Figure 2 and Figure 3The present invention provides a waste acid buffer tank for a methyl methacrylate device. The flushing and scraping mechanism 6 includes a tank cover 61 fastened to the top side of the tank body 1. A ring seat 62 is provided on the outer side of the bottom of the tank cover 61, and the outer surface of the ring seat 62 contacts the inner wall of the tank body 1 to enhance the stability of the mechanism in the tank body 1. A push structure 63 is locked and fixed on the middle side of the bottom of the tank cover 61. A flushing liquid pipe 64 is connected to the upper side of the push structure 63. A scraping head structure 65 is installed on the inner side of the bottom of the push structure 63. The push structure 63 provides a driving force for the scraping head structure 65 to move up and down along the tank wall. The movement changes the position, and the flushing liquid pipe 64 is set inside the tank cover 61, which is convenient for introducing flushing liquid from outside the tank body 1, so that the flushing liquid is transported to the scraper structure 65 after passing through the pushing structure 63, so as to perform the scraping and flushing action on the tank wall to remove attachments. The outside of the pushing structure 63 and the scraper structure 65 is provided with a protective chamber structure 66 for preventing direct contact with high-temperature gas, and the outer upper side of the protective chamber structure 66 is embedded in the ring seat 62, and the internal precision transmission components are protected by the protective chamber structure 66 from direct erosion by high temperature, corrosive gas or liquid in the tank.

[0032] See also Figure 3 、 Figure 4 and Figure 5 The present invention provides a waste acid buffer tank for a methyl methacrylate device. The push structure 63 includes a carrier frame 631 fastened to the tank cover 61 at the top. The bottom of the carrier frame 631 is fixedly connected to a first bracket 632. The top front side of the first bracket 632 is rotatably connected to a cylinder 633, and the bottom output shaft of the cylinder 633 is connected to a power rod 634. The cylinder 633 is used as a power source to transmit the telescopic motion to the power rod 634. The left side of the rear of the power rod 634 rotates with the first bracket 632 as a connecting rod mechanism. The power rod 634 is supported in the position, and the end away from the first bracket 632 is rotatably connected to the first gear rod 635. The rear end of the first gear rod 635 away from the power rod 634 is rotatably connected to the second bracket 636, and the bottom of the first gear rod 635 is meshed with the second gear rod 637. The second gear rod 637 is rotatably connected to the lower left side of the front part of the second bracket 636. Through the support point of the second bracket 636, the first gear rod 635 and the second gear rod 637 are meshed to change the direction of movement and transmit power;

[0033] The end of the second gear rotating rod 637 away from the first gear rotating rod 635 is rotatably connected to the bottom rod 638, transmitting the motion to the structure below. The rear end of the bottom rod 638 away from the second gear rotating rod 637 is rotatably connected to the third bracket 639, and the third bracket 639 provides a support point for the bottom rod 638. The first bracket 632, the second bracket 636 and the third bracket 639 are arranged in parallel from top to bottom to form a multi-layer stable structure to ensure smooth transmission. A spiral hose 6310 is installed on the inner side of the carrier frame 631. The spiral hose 6310 is installed on the inner side of the carrier frame 631. The top end of 310 is connected to the flushing liquid tube 64, and the spiral hose 6310 located on the bottom side of the first bracket 632 is spirally distributed on the inner sides of the second bracket 636 and the third bracket 639, and the bottom end of the spiral hose 6310 is connected to the scraping head structure 65, providing a flexible connection, allowing the flushing liquid to be continuously transported between the flushing liquid tube 64 and the moving scraping head structure 65 without being pulled and damaged. The scraping head structure 65 is fastened to the middle and lower side of the third bracket 639 so that the height position of the scraping head structure 65 changes with the overall movement of the pushing structure 63.

[0034] Among them, a first V-shaped rotating rod 6321 is rotatably provided at the right rear part of the first bracket 632 and the second bracket 636, and the middle connection of the first V-shaped rotating rod 6321 is at the same horizontal height as the connection between the power rod 634 and the first gear rotating rod 635. A second V-shaped rotating rod 6361 is rotatably provided at the right rear part of the second bracket 636 and the third bracket 639, and the middle connection of the second V-shaped rotating rod 6361 is at the same horizontal height as the connection between the second gear rotating rod 637 and the bottom rod 638. The first V-shaped rotating rod 6321 and the second V-shaped rotating rod 6361 respectively play the role of limiting and auxiliary support on the side parts of the three brackets, preventing the second bracket 636 and the third bracket 639 from positional deviation during the downward or upward movement, thereby ensuring the transmission accuracy and stable amplification effect.

[0035] The scraping head structure 65 includes a disc seat 651 fastened to the middle and lower side of the third bracket 639, a first motor 652 locked and fixed to the right side of the disc seat 651, a movable gear 653 connected to the output shaft at the bottom of the first motor 652, a gear ring 654 meshing and transmitting to the left side of the movable gear 653, and a cover seat 655 laterally fixed to the middle side of the bottom of the gear ring 654. The first motor 652 provides rotational power, causing the movable gear 653 to drive the gear ring 654 to transmit the rotational motion to the cover seat 655, thereby providing a mounting base and driving the lower components to rotate.

[0036] The second motor 656 is fixed on the left side of the inside of the cover seat 655, the first bevel gear 657 is connected to the output shaft at the bottom of the second motor 656, the second bevel gear 658 is meshed and driven at the bottom left side of the first bevel gear 657, and the first screw 659 rotates coaxially with the middle right side of the second bevel gear 658. The second motor 656 transmits the horizontal rotation motion to the first screw 659 after reversing the two bevel gears. The sleeve rod 6510 connected to the outer surface of the first screw 659 converts the rotation motion of the first screw 659 into its own horizontal linear motion. The cover frame 6511 is fastened to the right end of the sleeve rod 6510, the nozzle 6512 is set on the right side of the cover frame 6511, the first scraper 6513 is fastened to the rear side of the cover frame 6511, and the first scraper 6513 is rotatably connected to the first scraper 651 The second scraper 6514 at the bottom of the tank wall can better adapt to the conical bottom or uneven surface of the tank wall through the rotation design between the first scraper 6513 and the second scraper 6514, thereby enhancing the scraping effect. The top middle side of the cover seat 655 is rotatably connected to the disc seat 651, allowing the cover seat 655 and its upper components to rotate as a whole about the vertical axis. The left middle portion of the second bevel gear 658 is rotatably connected to the cover seat 655. The sleeve rod 6510 slides through the right interior of the cover seat 655. The bottom left side of the cover frame 6511 is rotatably connected to the second scraper 6514, allowing the second scraper 6514 to slightly rotate relative to the cover frame 6511 to better conform to the tank wall. The rear liquid inlet of the nozzle 6512 is connected to the spiral hose 6310, so that the nozzle 6512 receives flushing liquid from the spiral hose 6310.

[0037] Among them, an internal thread block threadedly connected to the first screw 659 is provided on the left side of the sleeve rod 6510, realizing threaded transmission between the sleeve rod 6510 and the first screw 659, and converting rotational motion into linear motion. Raised strips are provided on the upper and lower sides of the sleeve rod 6510 to form sliding guide keys. The two raised strips slide horizontally inside the right side of the cover seat 655, limiting the sleeve rod 6510 to only linear motion and not rotation, thereby ensuring the stability of the scraping direction. The second scraper 6514 is arranged in an inclined shape, and a through groove 65141 is opened on its right side in an inclined shape. The rotating column at the connection between the first scraper 6513 and the second scraper 6514 is arranged through the through groove 65141, providing a movable space for the rotating shaft between the first scraper 6513 and the second scraper 6514, allowing the angle between the two to change within a certain range to adapt to the wall surface.

[0038] See also Figure 3 、 Figure 6 and Figure 7The present invention provides a waste acid buffer tank for a methyl methacrylate device, wherein the tank protection structure 66 includes a tank cover 661 and a first baffle assembly 662 and a second baffle assembly 663 respectively arranged on the left and right sides of the tank cover 661. The first baffle assembly 662 and the second baffle assembly 663 have the same structure and size and are arranged in a left-right symmetrical shape, which is convenient for realizing synchronous opening and closing on both sides. A rectangular through-hole is opened at the bottom of the tank cover 661 to provide a channel for the extension and retraction of the scraping head structure 65, and a sealing strip is arranged above the rectangular through-hole. The top side of the sealing strip contacts the first baffle assembly 662 and the second baffle assembly 663 respectively, so as to close or open the through-hole at the bottom of the tank cover 661 through the first baffle assembly 662 and the second baffle assembly 663, thereby protecting the internal mechanism or allowing the scraping head structure 65 to extend for work, and providing a seal when the two baffle assemblies are closed to prevent the medium in the tank from invading the interior of the tank cover 661.

[0039] The second door assembly 663 includes a rectangular seat 6631 fixed to the top side of the hopper cover 661, a third motor 6632 locked and fixed to the rear side of the inner part of the rectangular seat 6631, a second screw 6633 connected to the output shaft at the bottom of the third motor 6632, an L-shaped slot frame 6634 fixed to the front part of the bottom side of the rectangular seat 6631, and a shift block 6635 longitudinally slidably connected to the front side of the L-shaped slot frame 6634. The upper rear side of the shift block 6635 is provided with an internal thread strip, and the rear side of the internal thread strip is threadedly connected to the outer side of the second screw 6633. On the surface, the third motor 6632 is used as the power source to convert the rotational motion into the linear motion of the shift block 6635, and the pull rod 6636 connected to the bottom side of the front of the shift block 6635, the first door panel 6637 connected to the bottom side of the rear of the shift block 6635, and the second door panel 6638 connected to the pull rod 6636 away from the side of the shift block 6635 are rotated to convert the linear motion of the shift block 6635 into the opening and closing motion of the two door panels, so that the two door panels move in conjunction to form an opening or closing above the through-hole at the bottom of the compartment cover 661.

[0040] Among them, the shift block 6635 and the second screw 6633 are respectively located on the front and rear sides of the interior of the magazine cover 661, and do not interfere with the movement of the first door panel 6637 and the second door panel 6638, ensuring smooth opening and closing of the baffle door. A first roller 66371 is provided for rotation on the left front part of the first door panel 6637, and a second roller 66381 is provided for rotation on the right front part of the second door panel 6638. The first roller 66371 and the second roller 66381 are both slidably connected to the inside of the L-shaped slot frame 6634, providing precise guidance for the movement of the two door panels, ensuring that the door panels open and close smoothly along the trajectory of the L-shaped slot frame 6634. When opening, the two door panels slide upward into the side wall position of the magazine cover 661 in turn, without interfering with the scraper head structure 65, and are accurately positioned when closing, ensuring the sealing effect after closing.

[0041] The waste acid buffer tank for a methyl methacrylate device of the present invention has the following working principle:

[0042] First, waste acid treatment and temperature control:

[0043] When the waste acid liquid generated by the upstream process enters the tank body 1 through the liquid inlet 3, the conical tank bottom design allows the liquid and sediment to naturally gather at the drain pipe 5. At the same time, the heat exchange pipe embedded in the inner wall of the tank body 1 is connected to the external heat exchange medium. The medium flows in from the heat exchange liquid inlet pipe 7, circulates through the heat exchange pipe, and is discharged from the heat exchange liquid outlet pipe 8, thereby achieving precise temperature control of the material in the tank. When the waste acid liquid enters the tank body 1, the exhaust port 4 continuously discharges high temperature and reaction gases to maintain the pressure balance inside the tank body 1.

[0044] Second, positioning and protection of the scouring and washing mechanism:

[0045] When the cleaning process is not in progress, the bin cover 661 of the bin protection structure 66 covers the pushing structure 63 and the scraping head structure 65, and the sealing strip on the bin cover 661 is tightly fitted with the bottom of the first and second baffle door assemblies 662 and 663 to isolate the corrosive medium; when the cleaning process is started, the bottoms of the first and second baffle door assemblies 662 and 663 are first opened, and then the cylinder 633 of the pushing structure 63 drives the power rod 634 to move, and the power direction is converted by the engagement of the first gear rotating rod 635 and the second gear rotating rod 637, and the bottom rod 638 is linked to drive the third bracket 639 to rise and fall as a whole, and the first V-shaped rotating rod 6321 and the second V-shaped rotating rod 6361 respectively constrain the displacement trajectory of the first bracket 632, the second bracket 636 and the third bracket 639 to prevent transmission deviation. During the movement, the spiral hose 6310 expands and deforms as the second bracket 636 and the third bracket 639 move downward, continuously delivering flushing liquid to the scraping head structure 65;

[0046] Third, composite cleaning of scraping and rinsing:

[0047] When the scraper structure 65 is precisely positioned to the target height by the push structure 63, the cleaning action is started synchronously, so that the first motor 652 drives the moving gear 653 to engage the gear ring 654, driving the cover seat 655 and the bottom assembly to rotate around the vertical axis, so that the nozzle 6512 and the two scrapers cover the entire circumference of the tank wall. Then the second motor 656 is controlled to start, and the output power of the second motor 656 is transmitted to the second bevel gear 658 through the first bevel gear 657, which is converted into horizontal axial rotation and drives the first screw 659 to rotate. The sleeve rod 6510 is connected to the first screw 659 through the internal thread block. The meshing mechanism converts the rotational motion into horizontal linear motion under the sliding constraints of the upper and lower ridges and the cover seat 655, pushing the cover frame 6511 to drive the first scraper 6513 to radially press against the tank wall. The flushing liquid is delivered to the nozzle 6512 through the spiral hose 6310 to immediately flush the attached objects. The first scraper 6513 and the second scraper 6514 are hingedly connected through the groove 65141 to adaptively adjust the angle when they are at the bottom position. When the scraper head structure 65 moves to the bottommost side, the bottom of the second scraper 6514 is in contact with the conical bottom of the tank body 1, thereby ensuring the scraping effect on the bottom side of the tank body 1.

[0048] Fourth, the opening, closing and sealing of the protective chamber:

[0049] Before cleaning, the third motor 6632 in the first stop door assembly 662 and the second stop door assembly 663 is started to drive the second screw 6633 to rotate, so that the shift block 6635 moves up along the L-shaped slot frame 6634, and the first door panel 6637 and the second door panel 6638 are linked by the pull rod 6636 to slide upward into the side wall position of the bin cover 661, so that the bottom position is opened, which facilitates the scraping head structure 65 and the pushing structure 63 to move out for cleaning; after cleaning, the third motor 6632 is reversed to move the shift block 6635 downward, driving the first roller 66371 and the second roller 66381 to roll along the L-shaped slot frame 6634 to close the first door panel 6637 and the second door panel 6638 above the opening at the bottom of the bin cover 661, pressing the sealing strip to form a barrier, thereby protecting the components inside the bin cover 661.

[0050] The above description is merely 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 aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to substitute equivalents for some of the technical features. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A waste acid buffer tank for a methyl methacrylate device, comprising a tank body (1), a tripod (2) fastened to the bottom of the tank body (1), a liquid inlet (3) provided on the upper middle side of the front portion of the tank body (1), an exhaust port (4) provided on the upper rear portion of the tank body (1), the bottom of the tank body (1) being conical, and a drain pipe (5) installed on the conical bottom, characterized in that: A flushing and scraping mechanism (6) is locked and fixed on the upper side of the interior of the tank body (1), and the flushing and scraping mechanism (6) includes a tank cover (61) fastened to the top side of the tank body (1), a ring seat (62) is provided on the outer side of the bottom of the tank cover (61), and the outer surface of the ring seat (62) contacts the inner wall of the tank body (1), and a push-position structure (63) is locked and fixed on the middle side of the bottom of the tank cover (61), a flushing liquid pipe (64) is connected to the upper side of the interior of the push-position structure (63), and a scraping head structure (65) is installed on the inner side of the bottom of the push-position structure (63), and the flushing liquid pipe (64) is arranged through the interior of the tank cover (61), and a protective chamber structure (66) for preventing direct contact with high-temperature gas is provided on the outside of the push-position structure (63) and the scraping head structure (65), and the upper side of the outer side of the protective chamber structure (66) is embedded in the interior of the ring seat (62).

2. The waste acid buffer tank for a methyl methacrylate device according to claim 1, wherein: The inner wall of the tank body (1) is embedded with a heat exchange tube, and the upper and lower ends of the heat exchange tube are respectively provided with a heat exchange liquid inlet tube (7) and a heat exchange liquid outlet tube (8). The heat exchange liquid inlet tube (7) is provided through the upper middle side of the side of the tank body (1), and the heat exchange liquid outlet tube (8) is provided through the lower side of the side of the tank body (1).

3. The waste acid buffer tank for a methyl methacrylate device according to claim 1, wherein: The pushing structure (63) includes a carrier frame (631) whose top is fastened to the tank cover (61); the bottom of the carrier frame (631) is fixedly connected to a first bracket (632); the front side of the top of the first bracket (632) is rotatably connected to a cylinder (633); and the output shaft at the bottom of the cylinder (633) is connected to a power rod (634); the left side of the rear of the power rod (634) is rotatably connected to the first bracket (632); and the end of the power rod (634) away from the first bracket (632) is rotatably connected to a first gear rotating rod (635); the rear end of the end of the first gear rotating rod (635) away from the power rod (634) is rotatably connected to a second bracket (636); the bottom of the first gear rotating rod (635) is meshed with a second gear rotating rod (637); and the second gear rotating rod (637) is rotatably connected to the front of the second bracket (636). On the lower left side, the end of the second gear rotating rod (637) away from the first gear rotating rod (635) is rotatably connected to the bottom rod (638), and the rear end of the bottom rod (638) away from the second gear rotating rod (637) is rotatably connected to the third bracket (639). The first bracket (632), the second bracket (636) and the third bracket (639) are arranged in parallel from top to bottom. A spiral hose (6310) is installed on the inner side of the carrier (631). The top end of the spiral hose (6310) is connected to the flushing liquid pipe (64). The spiral hose (6310) located on the bottom side of the first bracket (632) is spirally distributed on the inner sides of the second bracket (636) and the third bracket (639), and the bottom end of the spiral hose (6310) is connected to the scraper structure (65). The scraper structure (65) is fastened to the middle and lower side of the inside of the third bracket (639).

4. The waste acid buffer tank for a methyl methacrylate device according to claim 3, characterized in that: A first V-shaped rotating rod (6321) is rotatably provided at the rear right side of the first bracket (632) and the second bracket (636), and a middle connection point of the first V-shaped rotating rod (6321) is located at the same level as a connection point between the power rod (634) and the first gear rotating rod (635). A second V-shaped rotating rod (6361) is rotatably provided at the rear right side of the second bracket (636) and the third bracket (639), and a middle connection point of the second V-shaped rotating rod (6361) is located at the same level as a connection point between the second gear rotating rod (637) and the bottom rod (638).

5. The waste acid buffer tank for a methyl methacrylate device according to claim 3, characterized in that: The scraper head structure (65) includes a disc seat (651) fastened to the middle and lower side of the interior of the third bracket (639), a first motor (652) locked and fixed to the right side of the interior of the disc seat (651), a movable gear (653) connected to the bottom output shaft of the first motor (652), a gear ring (654) meshing and transmitting on the left side of the movable gear (653), a cover seat (655) fixed transversely to the middle side of the bottom of the gear ring (654), a second motor (656) fixed through the left side of the interior of the cover seat (655), a first bevel gear (657) connected to the bottom output shaft of the second motor (656), a second bevel gear (658) meshing and transmitting on the bottom left side of the first bevel gear (657), a first screw (659) coaxially rotating on the middle right side of the second bevel gear (658), and a screw threaded connection. A sleeve rod (6510) is provided on the outer surface of the first screw rod (659), a cover frame (6511) is fastened to the right end of the sleeve rod (6510), a nozzle (6512) is provided on the right side of the inside of the cover frame (6511), a first scraper (6513) is fastened to the rear side of the cover frame (6511), and a second scraper (6514) is rotatably connected to the bottom of the first scraper (6513); the top middle side of the cover seat (655) is rotatably connected to the disc seat (651); the left middle side of the second bevel gear (658) is rotatably connected to the cover seat (655); the sleeve rod (6510) penetrates and slides inside the right side of the cover seat (655); the bottom left side of the cover frame (6511) is rotatably connected to the second scraper (6514); and the rear liquid inlet of the nozzle (6512) is connected to the spiral hose (6310).

6. The waste acid buffer tank for a methyl methacrylate device according to claim 5, characterized in that: An internal thread block threadedly connected to the first screw rod (659) is provided on the left side of the sleeve rod (6510), and convex strips are provided on both the upper and lower sides of the sleeve rod (6510), and both convex strips slide transversely inside the right side of the cover seat (655).

7. The waste acid buffer tank for a methyl methacrylate device according to claim 5, characterized in that: The second scraper (6514) is arranged in an inclined shape, and a through groove (65141) is provided on the right side of the second scraper (6514). The rotating column at the connection between the first scraper (6513) and the second scraper (6514) is arranged to pass through the through groove (65141).

8. The waste acid buffer tank for a methyl methacrylate device according to claim 1, characterized in that: The warehouse protection structure (66) includes a warehouse cover (661) and a first door assembly (662) and a second door assembly (663) respectively arranged on the left and right sides of the warehouse cover (661). The first door assembly (662) and the second door assembly (663) have the same structure and size and are arranged in a bilaterally symmetrical manner. A rectangular opening is opened at the bottom of the warehouse cover (661), and a sealing strip is arranged above the rectangular opening. The top side of the sealing strip is in contact with the first door assembly (662) and the second door assembly (663).

9. The waste acid buffer tank for a methyl methacrylate device according to claim 8, characterized in that: The second door stop assembly (663) includes a rectangular seat (6631) fixed to the top side of the bin cover (661), a third motor (6632) locked and fixed to the rear side of the inner side of the rectangular seat (6631), a second screw (6633) connected to the bottom output shaft of the third motor (6632), an L-shaped slot frame (6634) fixed to the front part of the bottom side of the rectangular seat (6631), and a shift block (6634) longitudinally slidably connected to the front side of the L-shaped slot frame (6634). 35), a pull rod (6636) rotatably connected to the bottom side of the front portion of the shift block (6635), a first door panel (6637) rotatably connected to the bottom side of the rear portion of the shift block (6635), and a second door panel (6638) rotatably connected to the pull rod (6636) on the side away from the shift block (6635), wherein an internal thread strip is provided on the upper side of the rear portion of the shift block (6635), and the rear side of the internal thread strip is threadedly connected to the outer surface of the second screw rod (6633).

10. The waste acid buffer tank for a methyl methacrylate device according to claim 9, characterized in that: The shift block (6635) and the second screw (6633) are respectively located on the front and rear sides of the interior of the bin cover (661) and do not interfere with the movement of the first door panel (6637) and the second door panel (6638). A first roller (66371) is provided for rotation at the left front portion of the first door panel (6637), and a second roller (66381) is provided for rotation at the right front portion of the second door panel (6638). Both the first roller (66371) and the second roller (66381) are slidably connected to the interior of the L-shaped slot frame (6634).

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