Chemical tank cleaning device

Abstract

The invention relates to a cleaning device, and discloses a chemical tank cleaning device. The cleaning device comprises a cleaning support, a spraying assembly is arranged on the cleaning support, the cleaning support comprises a positioning frame and a folding frame, the folding frame can be unfolded in the chemical tank, and the two ends of the unfolded folding frame can extend to the two ends of the chemical tank; the spraying assembly comprises a plurality of first sprayers which are arranged on the folding frame and have upward spraying directions, the spraying assembly further comprises a sprayer frame which can be hung on the folding frame and can walk in the length direction of the folding frame, and a second sprayer is arranged at the lower end of the sprayer frame. Rapid and efficient cleaning of the interior of the chemical tank body is achieved in a mechanical mode, particularly, the hinged cleaning effect can be achieved on the top wall, where the chemical tank inlet and outlet is located, of the tank body, cleaning of the whole inner wall of the tank body is achieved, and it can be effectively guaranteed that the periphery of the chemical tank inlet and outlet has enough cleanliness.

Description

Technical Field

[0001] The present invention relates to a cleaning device, and particularly to a chemical tank cleaning device. Background Art

[0002] Chemical tanks are generally large in volume and are commonly used to store liquid chemical substances. After discharging the medium during use, the inside of the tank needs to be cleaned.

[0003] Currently, common horizontal chemical tanks generally adopt manual cleaning and mechanical cleaning. The manual cleaning method requires operators to enter the inside of the tank. For tanks transporting harmful media, this cleaning method causes great harm to the human body. The mechanical cleaning method generally extends a support from the inlet and outlet of the tank, and a rotatable nozzle is arranged on the support to clean the inside of the tank. Although this cleaning method can conveniently clean the inner wall of the tank, since this support needs to enter the inside of the tank through the inlet and outlet, generally, the inlet and outlet of the chemical tank need to be kept at the upper part of the tank during cleaning. Due to the influence of gravity during the upward spraying of the nozzle, the spraying effect on the top wall of the tank where the inlet and outlet of the chemical tank are located is often poor, and as the inlet and outlet of the chemical tank are the liquid inlet and outlet, sufficient cleanliness needs to be ensured around them. Summary of the Invention

[0004] The present invention provides a chemical tank cleaning device for the problems existing in the cleaning of chemical tanks in the prior art.

[0005] To solve the above technical problems, the present invention is solved by the following technical solutions: The chemical tank cleaning device includes a cleaning support. A spraying assembly is arranged on the cleaning support. The cleaning support includes a positioning frame that can be positioned at the inlet and outlet of the chemical tank, and further includes a folding frame connected to the positioning frame and capable of extending into the chemical tank from the inlet and outlet of the chemical tank. The folding frame can be unfolded inside the chemical tank, and both ends after unfolding can extend to both ends of the chemical tank. The spraying assembly includes a plurality of first nozzles arranged on the folding frame and uniformly arranged along the length direction of the folding frame with the spraying direction upward. The spraying assembly further includes a nozzle frame that can be hung on the folding frame and can move along the length direction of the folding frame. The nozzle frame is vertically arranged, with the upper end hung on the folding frame and the lower end provided with a second nozzle.

[0006] Preferably, a hinge seat is arranged at the bottom of the positioning frame, the upper end of the folding frame is rotatably connected to the hinge seat, and a pulling rope is connected between the positioning frame and the folding frame and can pull the folding frame from the vertical state to the horizontally unfolded state. The setting of the pulling rope can realize the smooth unfolding of the folding frame and assist in the limiting of the folding frame after unfolding.

[0007] Preferably, the positioning frame includes two positioning columns rotatably connected to the hinge base at the lower end. Upper and lower positioning rings are provided on the positioning columns. A positioning plate capable of being positioned on the end face of the inlet / outlet of the chemical tank is also provided. The positioning plate is fixed to the upper positioning ring or the lower positioning ring by a fastening nut. The positioning frame further includes a lifting rod hinged to the folding frame at the lower end. Upper and lower positioning holes are provided on the lifting rod. A positioning pin capable of being positioned on the end face of the inlet / outlet of the chemical tank is also provided. The positioning pin is installed in the upper positioning hole or the lower positioning hole. The upper positioning hole corresponds to the position of the upper positioning ring, and the lower positioning ring corresponds to the position of the lower positioning hole, so as to keep the positioning pin and the positioning plate at the same height position.

[0008] The setting of the positioning plate can realize the pre-fixing of the whole device at the inlet / outlet of the chemical tank, which is convenient for subsequent further operations on the bracket; the setting of the lifting rod can realize the pre-lifting when the folding frame is unfolded, so that it can cooperate with the pull rope to smoothly unfold the folding frame. At the same time, it can also realize the limit of the folding frame in the storage state, ensuring that it can be smoothly lowered into the tank body.

[0009] Preferably, there are two folding frames symmetrically arranged on both sides of the positioning frame. The positioning frame is also provided with a limit bracket for keeping the two folding frames in a horizontally unfolded state. The limit bracket includes a limit crossbar. Two limit columns are provided on the lower end face of the limit crossbar. Two limit holes respectively cooperating with the two limit columns are provided at the ends of the two folding frames. When the two folding frames are both in the horizontally unfolded state, the two limit columns can be respectively inserted into the two limit holes. The limit crossbar is installed on the hinge base through a limit screw. The lower end of the limit screw is fixed to the hinge base, and the upper end extends vertically upward and is threadedly connected with a fastening nut capable of abutting against the upper end face of the limit crossbar. The fastening nut can press the limit column in the limit hole; the limit crossbar can move up and down along the axial direction of the limit screw. A driving spring is also sleeved on the limit screw, and the upper end of the driving spring abuts against the lower end face of the limit crossbar and is used to drive the limit crossbar to move upward. The setting of the limit bracket can effectively ensure the stability of the unfolded state of the folding frame, and through the cooperation of the limit screw and the nut, it can also have a more convenient fixing and disassembling effect.

[0010] Preferably, the folding frame includes two relatively arranged support plates. The ends of the two support plates far from the positioning frame are connected to each other. The support plate is a long strip plate including a horizontal plate and a vertical plate. The nozzle frame includes a frame body and two traveling wheels arranged at the upper end of the frame body. The two traveling wheels can respectively travel on the upper end faces of the horizontal plates of the two support plates; a traveling channel for the nozzle frame to travel is formed between the horizontal plates of the two support plates, and the frame body can pass through the traveling channel from top to bottom. The structural setting of the folding frame can provide space for hanging the nozzle frame and also provide better support for the subsequent traveling of the nozzle frame on the folding frame.

[0011] Preferably, a conveyor roller and a brush conveyor belt mounted on the conveyor roller are installed between the vertical plates of the two support plates, and the first nozzles are arranged on both sides of the folding frame along the length direction of the brush conveyor belt; When the positioning plate is positioned on the end face of the inlet and outlet of the chemical tank and fixed to the lower positioning ring through a fastening nut, the upper end face of the brush conveyor belt is closely attached to the inner wall of the chemical tank; When the positioning plate is positioned on the end face of the inlet and outlet of the chemical tank and fixed to the upper positioning ring through a fastening nut, a spraying space for the first nozzles is formed between the upper end face of the brush conveyor belt and the inner wall of the chemical tank.

[0012] The positioning plate can position the folding frame at two positions, enabling initial spraying on the top of the tank and subsequent brushing, fully ensuring the brushing effect.

[0013] Preferably, the brush conveyor belt includes a belt body and first bristles arranged on the outer surface of the belt body. Protrusions are respectively provided on the upper and lower end faces of the belt body, and the outer end faces of the protrusions are flush with the outer end face where the first bristles are located; When the traveling wheels travel on the upper end face of the horizontal plate, the upper end face of the frame body is located below the belt body, and the upper end of the frame body can push one of the protrusions to move horizontally. The setting of the protrusions enables the traveling wheels to pass under the brush conveyor belt during the traveling process, and the front side of the upper end of the frame body pushes the protrusion to move, thereby driving the brush conveyor belt to operate through the protrusion, so as to realize the brushing of the inner surface of the top of the side wall of the tank body by the first bristles.

[0014] Preferably, a traveling wheel mounting box is provided at the upper end of the frame body, and a traveling wheel motor for driving the traveling wheels to rotate is installed in the traveling wheel mounting box; The frame body further includes a nozzle mounting frame provided below the traveling wheel mounting box. The nozzle mounting frame is arranged vertically downward, and receiving grooves are respectively provided at the opposite front and rear end faces. Nozzle mounting plates that can be received in the receiving grooves are provided on both sides of the bottom of the nozzle mounting frame. One end of the nozzle mounting plate is rotatably connected to the bottom of the nozzle mounting frame, and the other end is used for mounting the second nozzles. The nozzle mounting plate can be turned outward around the rotation connection with the nozzle mounting frame. The nozzle mounting plate can be received in the receiving groove, enabling it to be smoothly lowered into the tank body. After entering the tank body, it can turn out of the receiving groove, enabling it to spray a larger range in the tank body to ensure its better cleaning of the inner wall of the tank body.

[0015] Preferably, a rotating limit mechanism for the mounting plate is further provided on the frame body. The rotating limit mechanism for the mounting plate includes a limit seat slidably connected to the side wall of the storage groove and capable of sliding up and down along the length direction of the storage groove. The edge of the nozzle mounting plate is lapped on the upper end surface of the limit seat. When the limit seat moves to the upper end of the frame body, it can drive the nozzle mounting plate to flip to the vertical state and be stored in the storage groove. When the limit seat moves to the lower end of the frame body, the nozzle mounting plate can flip to the horizontal state. The setting of the rotating limit mechanism for the mounting plate can adjust the rotation angle of the nozzle mounting plate, enabling fixed-point spraying after the nozzle mounting plate rotates to the required angle. At the same time, the rotating limit mechanism for the mounting plate can also stably store the nozzle mounting plate in the storage groove.

[0016] Preferably, a brush roll assembly is further connected to the bottom of the frame body. The brush roll assembly includes a brush roll arm rotatably connected to the bottom of the frame body. A brush roll is provided at the end of the brush roll arm away from the frame body. The brush roll includes a roll body and second bristles. When the positioning plate is positioned on the end face of the inlet and outlet of the chemical tank and fixed to the lower positioning ring through a fastening nut, the rotation connection point between the brush roll arm and the bottom of the frame body is on the axis of the chemical tank. The second bristles can be attached to the inner wall of the chemical tank, and the roll body can cross over the bottom of the folding frame from the bottom of the folding frame. The setting of the brush roll assembly can achieve washing and wall brushing while the nozzle frame walks axially in the tank body, further enhancing the cleaning effect on the inner wall of the tank. At the same time, during the process of the roll body crossing over the bottom of the folding frame, the second bristles can also brush the surface of the folding frame, reducing the stains attached to the surface of the folding frame during the brushing process of the first bristles and the first nozzles.

[0017] Due to the adoption of the above technical solutions, the present invention has remarkable technical effects: The present invention realizes the rapid and efficient cleaning of the interior of the chemical tank body in a mechanical manner. In particular, it can achieve the cleaning effect of the hinged part at the top wall of the tank body where the inlet and outlet of the chemical tank are located, not only cleaning the entire inner wall of the tank body but also effectively ensuring sufficient cleanliness around the inlet and outlet of the chemical tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of the use state of the present invention.

[0019] Figure 2 is Figure 1 the sectional schematic diagram of

[0020] Figure 3 is Figure 2 the partial enlarged view of part A in

[0021] Figure 4 is the structural schematic diagram of the cleaning bracket of the present invention.

[0022] Figure 5It is a schematic diagram of the storage state of the folding frame in the cleaning bracket of the present invention.

[0023] Figure 6 It is a schematic diagram of the structure of the positioning frame of the present invention.

[0024] Figure 7 It is a schematic diagram of the structure of the folding frame of the present invention.

[0025] Figure 8 It is a schematic diagram of the structure of the nozzle bracket of the present invention.

[0026] Figure 9 is Figure 8 a schematic diagram of another perspective structure of Detailed implementation manners

[0027] The present invention will be further described in detail below in conjunction with the drawings and embodiments. Embodiment

[0028] In this embodiment, a chemical tank cleaning device is provided. As Figures 1-9 shown, the chemical tank is a horizontal large chemical tank, and its inlet and outlet are arranged at the top of the side wall of the tank body. When the inside of the tank body needs to be cleaned, the cleaning device is inserted into the tank body from the inlet and outlet of the chemical tank, and after being inserted, it is unfolded inside the tank body for cleaning.

[0029] Specifically, the chemical tank cleaning device in this embodiment includes a cleaning bracket 1, a spraying assembly 2 is provided on the cleaning bracket 1. The cleaning bracket 1 includes a positioning frame 3 that can be positioned at the inlet and outlet of the chemical tank, and further includes a folding frame 4 connected to the positioning frame 3 and capable of extending into the chemical tank from the inlet and outlet of the chemical tank. The folding frame 4 can be unfolded inside the chemical tank, and both ends after unfolding can extend to both ends of the chemical tank, so that the folding frame 4 can cover a sufficient cleaning stroke after being unfolded in the tank. The cleaning device in this embodiment is more suitable for a single-port and relatively short tank body, and its overall length can better match a single cleaning device; of course, for a relatively long tank body, generally a multi-port tank body, multiple cleaning devices can be placed multiple times or multiple cleaning devices can be used for synchronous cleaning, that is, the length of the folding frame 4 can be appropriately reduced to reduce the self-weight of the device, etc.

[0030] The spraying assembly 2 includes a plurality of first nozzles 201 arranged on the folding frame 4 and uniformly arranged along the length direction of the folding frame 4 with the spraying direction upward. The spraying assembly 2 further includes a nozzle bracket 5 that can be hung on the folding frame 4 and can move along the length direction of the folding frame 4. The nozzle bracket 5 is vertically arranged, with the upper end hung on the folding frame 4 and the lower end provided with a second nozzle 508.

[0031] In this embodiment, not only is the second nozzle 508 provided to perform a full - range spraying and cleaning on the inner wall of the tank, but also the first nozzle 201 is particularly provided on the folding rack 4 to clean the top of the side wall of the tank. Since the folding rack 4 is arranged at the entrance and exit of the chemical tank, the distance between the first nozzle 201 thereon and the top of the side wall of the tank is small, enabling better spraying and cleaning of the periphery of the entrance and exit and the top of the side wall of the tank.

[0032] In addition, for the convenience of installation at the entrance and exit of the chemical tank, the nozzle rack 5 in this embodiment is rear - mounted. It is lowered onto the folding rack 4 after the folding rack 4 is unfolded and fixed. It and the folding rack 4 belong to independent rack bodies 501. During the working process, it can be selected whether to lower the nozzle rack 5 according to actual needs. For example, for the filling of the same type of medium, when it is not necessary to clean the inside of the tank on a large scale and only a small - range cleaning is required at the entrance and exit of the chemical tank, the nozzle rack 5 can not be lowered, and only the first nozzle 201 is needed for cleaning.

[0033] For the convenience of the folding rack 4 to unfold inside the tank, in this embodiment, a hinge seat 301 is provided at the bottom of the positioning rack 3, and the upper end of the folding rack 4 is rotatably connected to the hinge seat 301. A pull rope 302 is connected between the positioning rack 3 and the folding rack 4, which can pull the folding rack 4 from the vertical state to the horizontal unfolded state.

[0034] In addition, the positioning rack 3 includes two positioning columns 303 whose lower ends are rotatably connected to the hinge seat 301. Upper positioning rings 304 and lower positioning rings 305 are arranged up and down on the positioning columns 303. A positioning plate 306 that can be positioned on the end face of the entrance and exit of the chemical tank is also provided. The positioning plate 306 is fixed at the upper positioning ring 304 or the lower positioning ring 305 through a fastening nut; The positioning rack 3 further includes a lifting rod 308 whose lower end is hinged to the folding rack 4. Upper positioning holes 309 and lower positioning holes 310 are arranged up and down on the lifting rod 308. A positioning pin 311 that can be positioned on the end face of the entrance and exit of the chemical tank is also provided. The positioning pin 311 is installed in the upper positioning hole 309 or the lower positioning hole 310. The upper positioning hole 309 corresponds to the position of the upper positioning ring 304, and the lower positioning ring 305 corresponds to the position of the lower positioning hole 310, so as to keep the positioning pin 311 and the positioning plate 306 at the same height position.

[0035] In the initial state, the folding frame 4 is in a vertical state and can be placed inside the tank body from the entrance and exit of the chemical tank. After the folding frame 4 extends in, first support the positioning frame 3 at the entrance and exit of the chemical tank through the positioning plate 306. Then, pull up the lifting rod 308. In the initial state, the lifting rod 308 is in a state of tilting upward toward the middle of the positioning frame 3 under the action of the side wall of the entrance and exit of the chemical tank. When the staff pulls up the lifting rod 308, the folding frame 4 can be appropriately rotated around the rotation point between it and the hinge seat 301. At this time, the staff then synchronously pulls up the pull rope 302. Under the action of the pull rope 302, the folding frame 4 can be gradually pulled up and finally pulled to the horizontal unfolded state. A pull rope 302 head limiting block for limiting the head of the pull rope 302 is provided on the lifting rod 308, which can prevent the head of the pull rope 302 from falling into the tank body and ensure that the staff can grab the head of the pull rope 302 from the entrance and exit. A pull rope 302 tail limiting block for limiting the tail of the pull rope 302 is provided in the middle of the upper end surface of the folding frame 4 when it is in the horizontal state. It can serve as the force application point of the pull rope 302 when the pull rope 302 is pulled, realizing that the pull rope 302 pulls up the folding frame 4.

[0036] In this embodiment, there are two folding frames 4, which are symmetrically arranged on both sides of the positioning frame 3. A limiting bracket 312 for keeping the two folding frames 4 in the horizontal unfolded state is further provided on the positioning frame 3. The limiting bracket 312 includes a limiting crossbar 313. Two limiting columns 314 are provided on the lower end surface of the limiting crossbar 313. Two limiting holes 315 for cooperating with the two limiting columns 314 are provided at the ends of the two folding frames 4. When the two folding frames 4 are both in the horizontal unfolded state, the two limiting columns 314 can be respectively inserted into the two limiting holes 315. The limiting crossbar 313 is installed on the hinge seat 301 through a limiting screw 316. The lower end of the limiting screw 316 is fixed on the hinge seat 301, and the upper end extends vertically upward and is threadedly connected with a fastening nut that can abut against the upper end surface of the limiting crossbar 313. The fastening nut can press the limiting column 314 in the limiting hole 315. The limiting crossbar 313 can move up and down along the axial direction of the limiting screw 316. A driving spring 317 that abuts against the lower end surface of the limiting crossbar 313 at the upper end and is used to drive the limiting crossbar 313 to move upward is also sleeved on the limiting screw 316.

[0037] After the folding frame 4 is pulled up, it is first pre-fixed through the positioning pin 311 on the lifting rod 308. At this time, the pull rope 302 still needs to be kept in a tightened state. Then, the folding frames 4 on both sides are further fixed through the limit support 312, so that the two positioning posts 303 on the limit support 312 are respectively inserted into the positioning holes on the two folding frames 4, and the nuts are tightened to keep the limit cross bar 313 in a downward pressing state, ensuring that the positioning posts 303 are always positioned in the positioning holes, so as to keep the folding frames 4 on both sides in a horizontally unfolded state. In order to ensure the stability of the folding frame 4 when unfolded in the tank, the head of the pull rope 302 can also be further tied to the upper end of the lifting rod 308, keeping the pull rope 302 always in a tightened state and pulling the lifting rod 308 downward, so that it is more stably stuck at the entrance and exit.

[0038] In this embodiment, the folding frame 4 includes two relatively arranged support plates 402. The ends of the two support plates 402 away from the positioning frame 3 are connected to each other. The support plate 402 is a long strip plate including a horizontal plate 406 and a vertical plate 407. The nozzle frame 5 includes a frame body 501 and two traveling wheels 502 arranged at the upper end of the frame body 501. The two traveling wheels 502 can respectively travel on the upper surfaces of the horizontal plates 406 of the two support plates 402; a traveling channel 405 for the nozzle frame 5 to travel is formed between the horizontal plates 406 of the two support plates 402, and the frame body 501 can pass through the traveling channel 405 from top to bottom.

[0039] Among them, a traveling wheel mounting box 503 is provided at the upper end of the frame body 501. A traveling wheel motor 504 for driving the traveling wheels 502 to rotate is installed in the traveling wheel mounting box 503. A gear set connected to the motor shaft of the traveling wheel motor 504 and a driving shaft connected to the gear set are provided in the traveling wheel mounting box 503, which can synchronously transmit the driving force of the motor shaft to the driving shafts of the two traveling wheels 502 to realize the horizontal travel of the frame body 501 on the folding frame 4; A conveyor roller 408 and a brush conveyor belt 409 mounted on the conveyor roller 408 are installed between the vertical plates 407 of the two support plates 402. The brush conveyor belt 409 includes a belt body 410 and first bristles 412 provided on the outer surface of the belt body 410. The upper surface where the outer ends of the first bristles 412 are located is 2-3 cm higher than the upper end surface of the folding frame 4; On the upper and lower end faces of the belt body 410, there is a bump 411 respectively. The outer end face of the bump 411 is flush with the outer end face where the first brush bristles 412 are located. When the traveling wheel 502 travels on the upper end face of the horizontal plate 406, the upper end face of the frame body 501 is located below the belt body 410, and the upper end part of the frame body 501 can push one of the bumps 411 to move horizontally. Specifically, when the traveling wheel 502 travels on the upper end face of the horizontal plate 406, the side face of the traveling wheel mounting box 503 pushes the bump 411 to move, and then drives the brush conveyor belt 409 to move. The two bumps 411 are arranged adjacent to each other, and the distance between them is greater than the length of the traveling wheel mounting box 503 along the traveling direction, which enables the traveling wheel mounting box 503 to drive the brush conveyor belt 409 to move back and forth through different bumps 411 when moving back and forth on the horizontal plate 406, and then realizes the reciprocating washing of the top of the side wall of the tank body.

[0040] The first spray nozzles 201 are arranged on both sides of the brush conveyor belt 409 along the length direction on the folding frame 4. Specifically, they are fixed on the outer side wall of the folding frame 4. A hose (not shown in the figure) for connecting the first spray nozzles 201 on the same side in series is fixed on the inner side wall of the folding frame 4. The hose can extend along the positioning frame 3 to the outside of the chemical tank to connect to a water source. During installation, the nozzle direction of the first spray nozzles 201 can be set upward and slightly inclined toward the middle of the folding frame 4 so that it can better spray and clean the tank wall above the folding frame 4.

[0041] When the positioning plate 306 is positioned on the end face of the entrance and exit of the chemical tank and fixed at the lower positioning ring 305 through a fastening nut, the upper end face of the brush conveyor belt 409 is in close contact with the inner wall of the chemical tank. When the positioning plate 306 is positioned on the end face of the entrance and exit of the chemical tank and fixed at the upper positioning ring 304 through a fastening nut, a spraying space for the first spray nozzles 201 is formed between the upper end face of the brush conveyor belt 409 and the inner wall of the chemical tank.

[0042] During the working process, first position the positioning frame 3 at the upper positioning ring 304. At this time, there is a certain distance between the brush conveyor belt 409 and the side wall of the chemical tank. Inject the cleaning liquid into the hose, and the first spray nozzles 201 spray the inside of the upper part of the chemical tank, which has a certain cleaning effect at this time. After the spraying is completed, then position the positioning frame 3 at the lower positioning ring 305 so that the first brush can fit on the inner wall of the tank. Then start the traveling wheel 502 so that the traveling wheel mounting box 503 drives the brush conveyor belt 409 to move, and then realizes the scrubbing of the inner wall of the tank by the first brush. During this process, the first spray nozzles 201 can keep spraying the cleaning liquid to realize spraying and scrubbing at the same time and improve the cleaning effect.

[0043] In this embodiment, the frame 501 further includes a nozzle mounting bracket 505 disposed below the traveling wheel mounting box 503. The nozzle mounting bracket 505 is vertically downward and has a receiving groove 506 at each of its opposite front and rear end faces. Nozzle mounting plates 507 that can be received in the receiving groove 506 are provided on both sides of the bottom of the nozzle mounting bracket 505. One end of the nozzle mounting plate 507 is rotatably connected to the bottom of the nozzle mounting bracket 505, and the other end is used to mount the second nozzle 508. The second nozzles 508 are mounted on both the upper and lower sides of the nozzle mounting plate 507 and spray upward and downward respectively; the nozzle mounting plate 507 can be turned outward around the rotation connection with the nozzle mounting bracket 505. A hose that can extend outside the tank body is fixed on the nozzle mounting plate 507. The hose is clamped on the frame 501 and has a certain length, so that it can better cooperate with the flipping movement of the nozzle mounting plate 507.

[0044] An installation plate rotation limiting mechanism is further provided on the frame 501. The installation plate rotation limiting mechanism can control the rotation angle of the nozzle mounting plate 507 according to its upward sliding height, and then enable the nozzles on the nozzle mounting plate 507 to move in the tank body, so that it can better clean various positions inside the tank body.

[0045] Specifically, the installation plate rotation limiting mechanism includes a limiting seat 509 slidably connected to the side wall of the receiving groove 506 and capable of sliding up and down along the length direction of the receiving groove 506. The edge portion of the nozzle mounting plate 507 is lapped on the upper end surface of the limiting seat 509. When the limiting seat 509 moves to the upper end portion of the frame 501, it can drive the nozzle mounting plate 507 to flip to the vertical state and be received in the receiving groove 506. When the limiting seat 509 moves to the lower end portion of the frame 501, the nozzle mounting plate 507 can flip to the horizontal state.

[0046] A limiting seat driving motor 515 for driving the limiting seat 509 to slide up and down and a driving screw rod 516 threadedly connected to the limiting seat 509 are provided on the frame 501. When the limiting seat driving motor 515 drives the limiting seat 509 to move upward through the driving screw rod 516, the limiting seat 509 can drive the nozzle mounting plate 507 to flip into the receiving groove 506. Conversely, when the limiting seat 509 moves downward, the nozzle mounting plate 507 will flip out of the receiving groove 506 under the action of its own gravity. A rechargeable battery for supplying power to the traveling wheel motor 504 and the limiting seat driving motor 515 can be installed on the cleaning device, or it can be directly connected to an external power source outside the tank body through a connecting wire. This is a conventional wiring and will not be elaborated here.

[0047] In order to enable the nozzle mounting plate 507 to smoothly flip out of the storage groove 506 in the initial state, a pushing spring 514 for pushing the nozzle mounting plate 507 to flip out of the storage groove 506 is provided on the bottom surface of the storage groove 506. When the limiting seat 509 moves downward to gradually release the limitation on the nozzle mounting plate 507, the nozzle mounting plate 507 gradually flips out of the storage groove 506 under the action of the pushing spring 514.

[0048] In addition, in order to further improve the cleaning effect, a brush roller assembly is also connected to the bottom of the frame body 501. The brush roller assembly includes a brush roller arm 510 rotatably connected to the bottom of the frame body 501. A brush roller 511 is provided at the end of the brush roller arm 510 away from the frame body 501. The brush roller 511 includes a roller body 512 and second bristles 513. The diameter of the roller body 512 is small, and the length of the second bristles 513 is long. The length of the second bristles 513 is longer than that of the first bristles 412, and both the first bristles 412 and the second bristles 513 are nylon bristles.

[0049] When the positioning plate 306 is positioned on the end face of the inlet and outlet of the chemical tank and fixed at the lower positioning ring 305 through a fastening nut, the rotation connection point between the brush roller arm 510 and the bottom of the frame body 501 is on the axis of the chemical tank. The second bristles 513 can be attached to the inner wall of the chemical tank, and the roller body 512 can cross over the bottom of the folding frame 4 from the bottom of the folding frame 4.

[0050] A driving mechanism for driving the brush roller arm 510 to rotate is also provided on the frame body 501. The driving mechanism includes a driving motor arranged in the traveling wheel mounting box 503 and a gear set connected to the driving motor. The gear set drives another gear set arranged at the lower end of the frame body 501 to rotate through a transmission belt. The brush roller arm 510 is connected to the gear set arranged at the lower end of the frame body 501. Through this driving mechanism, the brush roller arm 510 can be rotated around the rotation point between it and the frame body 501.

[0051] When the brush roller assembly washes the inner wall of the tank, the second bristles 513 can brush the inner wall of the tank. When the brush roller arm 510 rotates to the inlet and outlet, the roller body 512 is under the folding frame 4. The second bristles 513 are bent by force and can wash the outer surface of the folding frame 4 until the roller body 512 crosses over the folding frame 4. After the second bristles 513 are unfolded, they continue to brush the inner wall of the tank. The nozzle frame 5 moves slowly on the folding frame 4, and the length covered by one rotation of the brush roller assembly is sufficient to overcome the gap generated by its movement.

[0052] During the overall installation process, the folding frame 4 is lowered from the entrance and exit of the chemical tank to the inside of the tank in a vertical initial state, and then through the cooperation of the lifting pull rod 308, the positioning column 303 and the pull rope 302, the folding frame 4 is unfolded into a horizontal state inside the tank, and then the folding frame 4 in the horizontal state is positioned; further, the lower spray head frame 5 is hung on the folding frame 4, and the installation of the entire device inside the tank can be completed.

[0053] During the cleaning process, the corresponding brushes and spray heads are activated according to actual needs to achieve a full-range scrubbing of the inner wall of the tank.

[0054] After the scrubbing is completed, first remove the spray head frame 5, then release the horizontal limit of the folding frame 4, and under the action of the pull rope 302, the folding frame 4 is slowly folded until it finally folds back to the initial vertical state. At this time, the entire device can be pulled out of the tank, and finally the liquid after internal cleaning is discharged through the entrance and exit of the chemical tank.

[0055] It is easy to understand that those skilled in the art can combine, split, reorganize, etc. the embodiments of the present application based on one or several embodiments provided by the present application to obtain other embodiments, and these embodiments do not exceed the protection scope of the present application.

[0056] In summary, the above are only the preferred embodiments of the present invention, and all equivalent changes and modifications made according to the scope of the patent application of the present invention shall fall within the scope covered by the patent of the present invention.

Claims

1. Chemical tank cleaning device, including a cleaning bracket (1), and a spraying assembly (2) is provided on the cleaning bracket (1), characterized in that: The cleaning support (1) includes a positioning frame (3) that can be positioned at the inlet and outlet of the chemical tank, and also includes a folding frame (4) connected to the positioning frame (3) and capable of extending into the chemical tank from the inlet and outlet of the chemical tank. The folding frame (4) can be unfolded inside the chemical tank, and both ends after unfolding can extend to both ends of the chemical tank; The spraying assembly (2) includes a plurality of first nozzles (201) arranged on the folding frame (4) and evenly arranged along the length direction of the folding frame (4) with the spraying direction upward. The spraying assembly (2) also includes a nozzle holder (5) that can be hung on the folding frame (4) and can move along the length direction of the folding frame (4). The nozzle holder (5) is vertically arranged, with the upper end hung on the folding frame (4) and the lower end provided with a second nozzle (508).

2. The chemical tank cleaning device according to claim 1, characterized in that: A hinge seat (301) is provided at the bottom of the positioning frame (3), and the upper end of the folding frame (4) is rotatably connected to the hinge seat (301). A pulling rope (302) is connected between the positioning frame (3) and the folding frame (4), which can pull the folding frame (4) from the vertical state to the horizontal unfolded state.

3. The chemical tank cleaning device according to claim 1, characterized in that: The positioning frame (3) includes two positioning columns (303) with the lower ends rotatably connected to the hinge seat (301). Upper positioning rings (304) and lower positioning rings (305) are arranged up and down on the positioning columns (303). A positioning plate (306) that can be positioned on the end face of the inlet and outlet of the chemical tank is also provided. The positioning plate (306) is fixed to the upper positioning ring (304) or the lower positioning ring (305) through a fastening nut; The positioning frame (3) also includes a lifting rod (308) with the lower end hinged to the folding frame (4). Upper positioning holes (309) and lower positioning holes (310) are arranged up and down on the lifting rod (308). A positioning pin (311) that can be positioned on the end face of the inlet and outlet of the chemical tank is also provided. The positioning pin (311) is installed in the upper positioning hole (309) or the lower positioning hole (310). The upper positioning hole (309) corresponds to the position of the upper positioning ring (304), and the lower positioning ring (305) corresponds to the position of the lower positioning hole (310) to keep the positioning pin (311) and the positioning plate (306) at the same height position.

4. The chemical tank cleaning device according to claim 1, wherein: There are two folding frames (4), which are symmetrically arranged on both sides of the positioning frame (3). The positioning frame (3) is also provided with a limiting support (312) for keeping the two folding frames (4) in the horizontal unfolded state. The limiting support (312) includes a limiting crossbar (313). Two limiting columns (314) are provided on the lower end face of the limiting crossbar (313). Two limiting holes (315) respectively cooperating with the two limiting columns (314) are provided at the ends of the two folding frames (4). When the two folding frames (4) are both in the horizontal unfolded state, the two limiting columns (314) can be respectively inserted into the two limiting holes (315); The limit cross arm (313) is installed on the hinge seat (301) through a limit screw (316). The lower end of the limit screw (316) is fixed on the hinge seat (301), and the upper end extends vertically upward and is threadedly connected with a fastening nut that can abut against the upper end face of the limit cross arm (313). The fastening nut can press the limit post (314) into the limit hole (315). The limit cross arm (313) can move up and down along the axial direction of the limit screw (316). A driving spring (317) is also sleeved on the limit screw (316), and the upper end of the driving spring (317) abuts against the lower end face of the limit cross arm (313) and is used to drive the limit cross arm (313) to move upward.

5. The chemical tank cleaning device according to claim 2, wherein: The folding frame (4) includes two oppositely arranged support plates (402). The ends of the two support plates (402) far from the positioning frame (3) are connected to each other. The support plate (402) is a long strip plate including a horizontal plate (406) and a vertical plate (407). The nozzle frame (5) includes a frame body (501) and two traveling wheels (502) arranged at the upper end of the frame body (501). The two traveling wheels (502) can respectively travel on the upper end faces of the horizontal plates (406) of the two support plates (402). A traveling channel (405) for the nozzle frame (5) to travel is formed between the horizontal plates (406) of the two support plates (402), and the frame body (501) can pass through the traveling channel (405) from top to bottom.

6. The chemical tank cleaning device according to claim 5, characterized in that: A conveyor roller (408) and a brush conveyor belt (409) mounted on the conveyor roller (408) are installed between the vertical plates (407) of the two support plates (402). The first nozzles (201) are arranged on both sides of the brush conveyor belt (409) along the length direction. When the positioning plate (306) is positioned on the end face of the chemical tank inlet and outlet and fixed at the lower positioning ring (305) through a fastening nut, the upper end face of the brush conveyor belt (409) is closely attached to the inner wall of the chemical tank. When the positioning plate (306) is positioned on the end face of the chemical tank inlet and outlet and fixed at the upper positioning ring (304) through a fastening nut, a spraying space for the first nozzles (201) is formed between the upper end face of the brush conveyor belt (409) and the inner wall of the chemical tank.

7. The chemical tank cleaning device according to claim 6, characterized in that: The brush conveyor belt (409) includes a belt body (410) and first bristles (412) arranged on the outer surface of the belt body (410). A convex block (411) is respectively arranged on the upper and lower end faces of the belt body (410), and the outer end face of the convex block (411) is flush with the outer end face where the first bristles (412) are located. When the traveling wheels (502) travel on the upper end faces of the horizontal plates (406), the upper end face of the frame body (501) is located below the belt body (410), and the upper end of the frame body (501) can push one of the convex blocks (411) to move horizontally.

8. The chemical tank cleaning device according to claim 5, wherein: A traveling wheel mounting box (503) is arranged at the upper end of the frame body (501), and a traveling wheel motor (504) for driving the traveling wheels (502) to rotate is installed in the traveling wheel mounting box (503). The frame body (501) further includes a nozzle mounting bracket (505) disposed below the traveling wheel mounting box (503). The nozzle mounting bracket (505) is vertically downward and is respectively provided with a receiving groove (506) at the opposite front and rear end faces. On both sides of the bottom of the nozzle mounting bracket (505), there are nozzle mounting plates (507) that can be received in the receiving groove (506). One end of the nozzle mounting plate (507) is rotatably connected to the bottom of the nozzle mounting bracket (505), and the other end is used to mount the second nozzle (508). The nozzle mounting plate (507) can be turned outward around the rotation connection with the nozzle mounting bracket (505).

9. The chemical tank cleaning device according to claim 5, wherein: The frame body (501) is also provided with a mounting plate rotation limiting mechanism. The mounting plate rotation limiting mechanism includes a limiting seat (509) slidably connected to the side wall of the receiving groove (506) and capable of sliding up and down along the length direction of the receiving groove (506). The edge portion of the nozzle mounting plate (507) is lapped on the upper end face of the limiting seat (509). When the limiting seat (509) moves to the upper end portion of the frame body (501), it can drive the nozzle mounting plate (507) to turn to the vertical state and be received in the receiving groove (506). When the limiting seat (509) moves to the lower end portion of the frame body (501), the nozzle mounting plate (507) can turn to the horizontal state.

10. The chemical tank cleaning device according to claim 5, characterized in that: The bottom of the frame body (501) is also connected with a brush roller assembly. The brush roller assembly includes a brush roller arm (510) rotatably connected to the bottom of the frame body (501). The end of the brush roller arm (510) away from the frame body (501) is provided with a brush roller (511). The brush roller (511) includes a roller body (512) and second bristles (513). When the positioning plate (306) is positioned on the end face of the chemical tank inlet and outlet and fixed to the lower positioning ring (305) through a fastening nut, the rotation connection point between the brush roller arm (510) and the bottom of the frame body (501) is on the axis of the chemical tank. The second bristles (513) can be attached to the inner wall of the chemical tank, and the roller body (512) can cross over the bottom of the folding frame (4) from the folding frame (4).

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