An ultrasonic phacoemulsification handpiece cleaning device

Abstract

The application discloses an ultrasonic emulsification handle cleaning device and relates to the technical field of medical instrument cleaning equipment. The device comprises a cleaning box body and a V-shaped flow channel arranged in the cleaning box body. Differential speed floating roller brush mechanisms are arranged on the two sides of the V-shaped flow channel. Cyclone pulse flushing mechanisms are arranged at the front and rear ends of the V-shaped flow channel. A guide rib and an elastic beating and detaching mechanism are arranged on the flow guide bottom surface. The differential speed floating roller brush mechanisms drive the ultrasonic emulsification handle to roll, overturn and rub. The guide rib guides the posture change of the handle. The cyclone pulse flushing mechanisms form pulse flushing flow through the alternate injection of gas and liquid. The elastic beating and detaching mechanism periodically beats and detaches the handle. The roller brush adopts a wavy bristle structure, which can enhance the surface extrusion and cleaning effect. The device can realize the cooperative cleaning of brushing, overturning, flushing and beating and detaching, improve the removal effect of pollutants on the surface and gap positions of the ultrasonic emulsification handle, and has the advantages of high cleaning efficiency, strong adaptability and stable cleaning quality.

Description

Technical Field

[0001] This application relates to the field of medical device cleaning equipment technology, and in particular to an ultrasonic emulsification handle cleaning device. Background Technology

[0002] Phacoemulsification is a widely used minimally invasive surgical procedure in the treatment of cataracts in ophthalmology. As an important component of the phacoemulsification system, the phacoemulsification handpiece comes into direct contact with the irrigation fluid, tissue debris, and protein residues during the procedure, and its internal channels and outer surface are prone to contamination.

[0003] Existing cleaning methods for ultrasonic emulsification handles mainly include manual scrubbing, soaking for disinfection, and simple rinsing. Among these, manual scrubbing relies on the operator's experience, is labor-intensive, and has inconsistent cleaning results; soaking for disinfection can soften some contaminants, but its effect on removing protein residues adhering to the inner walls of narrow flow channels is limited; and most ordinary rinsing equipment uses unidirectional liquid flow rinsing, which lacks sufficient scrubbing of the handle's outer surface and enhanced desorption of contaminants.

[0004] Furthermore, different models of ultrasonic emulsification handles vary in size and shape, making traditional fixed clamping cleaning structures insufficiently adaptable and prone to inadequate localized cleaning. Some existing roller brush cleaning structures only achieve simple rolling contact, failing to generate effective tumbling and kneading motions from the handle, thus affecting the overall cleaning effect.

[0005] Therefore, there is an urgent need to provide an ultrasonic emulsification handle cleaning device that can achieve the combined effects of ultrasonic emulsification handle rolling and flipping, outer surface brushing, pulse rinsing, and tapping desorption, so as to improve the cleaning efficiency and cleaning quality of ultrasonic emulsification handles. Summary of the Invention

[0006] The purpose of this invention is to provide an ultrasonic emulsification handle cleaning device to solve the problems of low cleaning coverage, poor contaminant desorption effect, insufficient compatibility with handles of different specifications, and low cleaning efficiency in the existing ultrasonic emulsification handle cleaning process.

[0007] This application provides an ultrasonic emulsification handle cleaning device, which adopts the following technical solution: it includes a cleaning chamber and a V-shaped flow channel disposed inside the cleaning chamber; The V-shaped flow channel includes a left side wall, a right side wall, and a flow guide bottom surface arranged opposite to each other, and multiple guide ribs are provided on the front and rear sides of the flow guide bottom surface respectively; Differential floating roller brush mechanisms are provided on both sides of the V-shaped flow channel, and the differential floating roller brush mechanism includes a left roller brush and a right roller brush. The V-shaped flow channel is equipped with a pulse flushing mechanism at both the front and rear ends; The bottom surface of the guide is also provided with an elastic tapping and desorption mechanism located between the guide protrusions; The ultrasonic emulsification handle is placed inside the V-shaped flow channel and moves along the left and right roller brushes. It completes the cleaning process under the action of the swirling pulse flushing mechanism and the elastic tapping desorption mechanism.

[0008] Optionally, the differential floating roller brush mechanism includes a left roller brush, a right roller brush, a left drive motor, a right drive motor, and a floating support assembly; The left drive motor and the right drive motor drive the left roller brush and the right roller brush to rotate respectively, and the left roller brush and the right roller brush operate at different speeds.

[0009] Optionally, the guide rib is one of an arc-shaped guide rib, an inclined guide rib, or a spiral guide rib; A guide gap is formed between adjacent guide ribs to change the movement posture of the ultrasonic emulsification handle.

[0010] Optionally, the differential floating roller brush mechanism includes a left roller brush, a right roller brush, a left drive motor, a right drive motor, and a floating support assembly; The left drive motor and the right drive motor respectively drive the left roller brush and the right roller brush to rotate; The left and right rollers operate at different speeds so that the ultrasonic emulsification handle generates a flipping and kneading motion during the rolling process.

[0011] Optionally, both the left and right roller brushes include a hollow brush cylinder, a drive motor disposed inside the hollow brush cylinder, and a fixed shaft passing through the center of the drive motor. Both ends of the fixed shaft are fixed to the floating support assembly; The stator of the drive motor is fixed to the outer periphery of the fixed shaft, and the rotor of the drive motor is fixedly connected to the hollow brush cylinder to drive the hollow brush cylinder to rotate around the fixed shaft.

[0012] Optionally, the floating support assembly includes a guide rod and an elastic clamping element; The guide rod is slidably disposed on both sides of the V-shaped flow channel; The fixed shaft is fixedly connected to the end of the guide rod; The elastic clamping element drives the roller brush to approach and conform to the outer surface of the ultrasonic emulsification handle.

[0013] Optionally, the swirling pulse flushing mechanism includes a front nozzle group disposed at the front end of the V-shaped flow channel and a rear nozzle group disposed at the rear end of the V-shaped flow channel; Both the front nozzle group and the rear nozzle group include two or more swirling nozzles. The swirling nozzles are connected to the cleaning fluid supply system and the compressed gas supply system, respectively. The swirling nozzle is connected to the cleaning fluid supply system and the compressed gas supply system respectively via a gas-liquid switching valve; The gas-liquid switching valve is used to control the alternating entry of cleaning fluid and compressed gas into the swirling nozzle to form a pulse flushing flow.

[0014] Optionally, the elastic tapping release mechanism includes multiple tapping columns, a tapping sleeve, and a return spring; The tapping columns are spaced apart along the length of the V-shaped flow channel; The lower end of the striking column is connected to the return spring, and a striking sleeve is provided on its top. The top of the tapping column is positioned above the bottom surface of the guide to contact the rolling ultrasonic emulsification handle.

[0015] The bottom of the cleaning box is equipped with a fixed motor, and the output end of the fixed motor is equipped with a rotating shaft. The rotating shaft is equipped with multiple rotating cams that can contact the bottom of the tapping column.

[0016] Optionally, the bottom of the cleaning chamber is provided with a drain port for discharging waste liquid from the cleaning chamber.

[0017] Optionally, the hollow brush cylinder has a bristle layer on its outer periphery; The bristle layer is composed of multiple rows of bristle bundles, which are staggered along the axial and circumferential directions of the hollow brush cylinder. The top contours of adjacent bristle bundles are arranged in a periodic up-and-down pattern, giving the bristle layer an overall wavy bristle structure.

[0018] In summary, this application includes the following beneficial technical effects: 1. By setting V-shaped flow channels and guide ribs, the rolling trajectory of the ultrasonic emulsification handle can be guided, causing the handle to change its posture during the cleaning process and improving the cleaning coverage of the outer surface.

[0019] 2. By setting a differential floating roller brush mechanism and making the left and right roller brushes run at different speeds, the ultrasonic emulsification handle can generate a flipping and kneading motion during the rolling process, thereby enhancing the pollutant removal effect.

[0020] 3. By placing the drive motor inside the hollow brush cylinder, the roller brush structure becomes more compact, which helps to improve the space utilization of the device.

[0021] 4. By setting up floating support components and elastic clamping parts, the roller brush can adaptively fit ultrasonic emulsification handles of different specifications, improving the device's adaptability and cleaning uniformity.

[0022] 5. By setting up a swirling pulse flushing mechanism and using a gas-liquid switching valve to control the alternating entry of cleaning fluid and compressed gas into the swirling nozzle, a pulse flushing flow can be formed, which improves the flushing and desorption capabilities of residual pollutants.

[0023] 6. By setting up an elastic tapping desorption mechanism, the ultrasonic emulsification handle is subjected to periodic tapping during the rolling process, which helps to loosen and remove stubborn contaminants adhering to the surface of the handle.

[0024] 7. By adopting a wavy bristle structure, the bristles form a periodic up-and-down contact state during contact with the ultrasonic emulsification handle, thereby enhancing the squeezing and rubbing effect on the handle surface and improving the overall cleaning efficiency. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the device. Figure I ; Figure 2 This is the front view of the device; Figure 3 This is a top view of the device; Figure 4 This is a cross-sectional view of the overall structure of the device. Figure I ; Figure 5 This is a cross-sectional view of the overall structure of the device. Figure II ; Figure 6 This is a cross-sectional view of the overall structure of the device. Figure III ; Figure 7 This is a schematic diagram of the interior of the cleaning chamber of this device; The components include: 1. Cleaning chamber; 2. V-shaped flow channel; 3. Differential floating roller brush mechanism; 4. Swirl pulse flushing mechanism; 5. Elastic tapping desorption mechanism; 7. Drain outlet; 21. Left side wall; 22. Right side wall; 23. Guide bottom surface; 24. Guide rib; 25. Guide gap; 31. Left roller brush; 32. Right roller brush; 33. Left drive motor; 34. Right drive motor; 35. Floating support assembly; 41. Front nozzle group; 42. Rear nozzle group; 43. Swirl nozzle; 46. Gas-liquid switching valve; 51. Tapping column; 52. Tapping sleeve; 53. Return spring; 54. Fixed motor; 55. Rotating shaft; 56. Rotating cam; 311. Hollow brush cylinder; 312. Drive motor; 313. Fixed shaft; 314. Bristle layer; 315. Bristle bundle; 351. Guide rod; 352. Elastic clamping component. Detailed Implementation

[0026] The present invention will be further described in detail below with reference to the accompanying drawings, but the scope of protection of the present invention is not limited to the following embodiments.

[0027] like Figures 1 to 4 As shown, an ultrasonic emulsification handle cleaning device includes a cleaning chamber 1 and a V-shaped flow channel 2 disposed inside the cleaning chamber 1.

[0028] The cleaning chamber 1 is made of 304 stainless steel plate, which is bent and welded to form a sealed chamber structure. All joints of the chamber are connected by continuous full welding. The top of the cleaning chamber 1 is hinged with a cover plate by stainless steel hinges. A transparent observation cover is fixedly connected to the cover plate. A silicone sealing strip is set between the observation cover and the chamber. The bottom of the cleaning chamber 1 is fixed with a support base by welding and the drain port 7 is installed by threaded connection.

[0029] like Figure 4 , Figure 7 As shown, the V-shaped flow channel 2 is fixedly installed in the central area inside the cleaning chamber 1.

[0030] The left side wall 21, the right side wall 22, and the bottom surface of the guide are all made of 304 stainless steel plates, which are bent and welded to form an integral V-shaped structure.

[0031] The left side wall 21 and the right side wall 22 form an angle of 60° to 120°, preferably 90°.

[0032] The bottom surface 23 of the guide extends along the length direction.

[0033] Multiple guide ribs 24 are provided on the front and rear sides of the bottom surface 23 of the guide.

[0034] The guide rib 24 is preferably made of 304 stainless steel. Its lower end is fixedly connected to the upper surface of the guide bottom surface 23 by continuous welding. The weld is arranged continuously along the length of the guide rib 24 to ensure the structural stability of the guide rib 24 under long-term flushing conditions.

[0035] The guide rib 24 can be an arc-shaped guide rib, an inclined guide rib, or a spiral guide rib structure.

[0036] The guide rib 24 has a height of 3-8 mm, preferably 5 mm; a width of 5-15 mm; and a guide gap 25 is formed between adjacent guide ribs 24.

[0037] When the ultrasonic emulsification handle rolls past the guide rib 24, the guide rib 24 comes into contact with the ultrasonic emulsification handle, causing its posture to change.

[0038] like Figure 3 , Figure 4 , Figure 5As shown, differential floating roller brush mechanisms 3 are respectively arranged on both sides of the V-shaped flow channel 2. The differential floating roller brush mechanism 3 includes a left roller brush 31, a right roller brush 32, a left drive motor 33, a right drive motor 34, and a floating support assembly 35. The left roller brush 31 and the right roller brush 32 are located on both sides of the V-shaped flow channel 2. The left drive motor 33 and the right drive motor 34 drive the left roller brush 31 and the right roller brush 32 to rotate, respectively. The left roller brush 31 and the right roller brush 32 operate at different speeds. Each roller brush includes a hollow brush cylinder 311, a drive motor 312, and a fixed shaft 313. The drive motor 312 is installed inside the hollow brush cylinder 311. The fixed shaft 313 passes through the center of the drive motor 312.

[0039] The drive motor 312 is preferably a 24V waterproof DC brushless motor, with its stator fixed to the outer periphery of the fixed shaft 313 and its rotor fixed to the inner wall of the hollow brush cylinder 311.

[0040] The fixed shaft 313 is preferably formed by machining a solid shaft of 304 stainless steel, and its two ends are machined with external threaded connection sections; the floating support assembly 35 is provided with mounting holes, and the two ends of the fixed shaft 313 pass through the mounting holes and are fixedly connected by locking nuts, thereby realizing reliable installation between the roller brush assembly and the floating support assembly 35.

[0041] The hollow brush cylinder 311 has end caps fixedly installed at both ends, and a first O-ring seal is provided between the end caps and the hollow brush cylinder 311. A second O-ring seal and a labyrinth seal groove are provided at the position where the fixed shaft 313 passes through the end cap, thereby forming a double sealing structure. The drive motor 312 is located inside the sealed cavity formed by the hollow brush cylinder 311 and the end caps to prevent the cleaning fluid from entering the motor area.

[0042] like Figure 6 As shown, the hollow brush cylinder 311 is made of stainless steel or PEEK engineering plastic tubing. A bristle layer 314 is provided on the outer periphery of the hollow brush cylinder 311. Bristle bundles 315 are installed into pre-set bristle holes on the outer wall of the hollow brush cylinder 311 using a bristle implantation process, and then cured and fixed with medical-grade epoxy resin. The bristle layer 314 consists of multiple rows of bristle bundles 315. The bristle bundles 315 are made of medical-grade nylon filaments, polyester filaments, or PEEK filaments. The multiple rows of bristle bundles 315 are staggered along the axial and circumferential directions of the hollow brush cylinder 311. The tops of adjacent bristle bundles 315 form a periodic undulating structure. The height difference between the crests and troughs is preferably 1–5 mm. The crests and troughs of the wavy bristle bundles 315 contact the outer surface of the ultrasonic emulsification handle, adapting to the shape of the emulsification handle, and simultaneously causing the ultrasonic emulsification handle to generate periodic squeezing and releasing actions during the roller brush driving process.

[0043] The floating support assembly 35 includes a guide rod 351 and an elastic clamping member 352.

[0044] The guide rod 351 is slidably disposed on both sides of the V-shaped flow channel 2.

[0045] The guide rod 351 passes through a guide sleeve welded and fixed to the side wall of the cleaning chamber 1, forming a sliding fit with the guide sleeve. The guide sleeve is made of oil-impregnated copper or engineering plastic bushing to reduce frictional resistance during movement. The fixed shaft 313 is fixedly connected to the end of the guide rod 351. The elastic clamping element 352 is preferably a compression spring. One end of the compression spring abuts against the outer end face of the guide sleeve, and the other end abuts against the limiting retaining ring on the guide rod 351, thereby continuously applying radial clamping force to the roller brush.

[0046] The swirling pulse flushing mechanism 4 includes a front nozzle group 41, a rear nozzle group 42, a swirling nozzle 43, a cleaning fluid supply system, a compressed gas supply system, and a gas-liquid switching valve 46.

[0047] The front nozzle assembly 41 and the rear nozzle assembly 42 are respectively installed at the front and rear ends of the V-shaped flow channel 2. Each swirling nozzle 43 is installed on the nozzle mounting base by means of a threaded connection, and the nozzle mounting base is fixed to the corresponding end of the V-shaped flow channel 2 by bolts.

[0048] The cleaning fluid supply system includes a storage tank, a pump, and pipelines. The compressed gas supply system includes a miniature air compressor, a storage tank, and pipelines. The gas-liquid switching valve 46 is an electromagnetic directional valve.

[0049] This embodiment also includes a PLC controller, which is electrically connected to the left drive motor 33, the right drive motor 34, the fixed motor 54, the infusion pump, the air compressor, and the gas-liquid switching valve 46.

[0050] After the PLC controller starts, it first drives the left and right roller brushes to run; then it controls the infusion pump to start and deliver cleaning fluid to the swirling nozzle 43; when the preset time is reached, the PLC controller controls the gas-liquid switching valve 46 to switch to the compressed gas passage, so that compressed air enters the swirling nozzle 43 to form an airflow impact; then it switches back to the liquid flushing state, thereby forming a cyclic pulse flushing.

[0051] like Figure 4 , Figure 5 , Figure 6 As shown, the elastic tapping release mechanism 5 includes a tapping column 51, a tapping sleeve 52, and a return spring 53.

[0052] The tapping columns 51 are preferably made of PEEK material to balance strength and wear resistance. The tapping columns 51 are spaced apart along the length of the guide bottom surface 23.

[0053] A guide hole is welded and fixed below the bottom surface 23 of the guide, and the tapping column 51 is inserted into the guide hole and forms a sliding fit.

[0054] The reset spring 53 is sleeved on the outer periphery of the striking post 51, with its upper end abutting against the guide hole and its lower end abutting against the lower limiting step of the striking post 51.

[0055] A tapping sleeve 52 is fitted onto the top of the tapping column 51. The tapping sleeve 52 is preferably made of medical-grade silicone material. The top of the tapping column 51 is positioned higher than the bottom surface 23 of the drainage channel.

[0056] A fixed motor 54 is located at the bottom of the cleaning chamber 1. The output end of the fixed motor 54 is connected to a rotating shaft 55. Multiple rotating cams 56 are fixedly mounted on the rotating shaft 55. The rotating cams 56 are fixed to the outer circumference of the rotating shaft 55 by key connection. The outer edge of the rotating cam 56 directly presses against the bottom plane of the striking column 51; when the rotating cam 56 rotates to the highest point, it pushes the striking column 51 to move upward; when the cam rotates away, the striking column 51 falls back quickly under the action of the return spring 53, thus forming a continuous striking action.

[0057] After receiving the start command, the PLC controller simultaneously starts the left drive motor 33, the right drive motor 34, the stationary motor 54, and the infusion pump.

[0058] The left roller brush 31 and the right roller brush 32 rotate at different speeds, driving the ultrasonic emulsification handle to generate flipping, rolling and kneading motions; the guide rib 24 further changes the posture of the ultrasonic emulsification handle; the swirling nozzle 43 continuously performs alternating gas-liquid pulse rinsing; the fixed motor 54 drives the rotating cam 56 to rotate and drive the tapping column 51 to reciprocate, periodically tapping and desorbing the ultrasonic emulsification handle.

[0059] Pollutants and waste liquid generated during the cleaning process are collected at the bottom of the cleaning tank 1 and discharged through the drain port 7, thus achieving a complete cleaning cycle.

Claims

1. An ultrasonic emulsification handle cleaning device, characterized in that, It includes a cleaning chamber (1) and a V-shaped flow channel (2) disposed inside the cleaning chamber (1); The V-shaped flow channel (2) includes a left side wall (21), a right side wall (22) and a flow guide bottom surface (23) arranged opposite to each other. Multiple guide ribs (24) are provided on the front and rear sides of the flow guide bottom surface (23). The V-shaped flow channel (2) is provided with a differential floating roller brush mechanism (3) on both sides, and the differential floating roller brush mechanism (3) includes a left roller brush (31) and a right roller brush (32). The V-shaped flow channel (2) is provided with a swirling pulse flushing mechanism (4) at the front and rear ends respectively. The bottom surface (23) of the guide is also provided with an elastic tapping and desorption mechanism (5) located between adjacent guide ribs (24); The ultrasonic emulsification handle is placed in the V-shaped flow channel (2), and rolls under the drive of the left roller brush (31) and the right roller brush (32), and completes cleaning under the action of the swirling pulse flushing mechanism (4) and the elastic tapping desorption mechanism (5).

2. The ultrasonic emulsification handle cleaning device according to claim 1, characterized in that: The guide rib (24) is one of an arc-shaped guide rib, an inclined guide rib, or a spiral guide rib; A guide gap (25) is formed between adjacent guide ribs (24) to change the motion posture of the ultrasonic emulsification handle.

3. The ultrasonic emulsification handle cleaning device according to claim 1, characterized in that: The differential floating roller brush mechanism (3) includes a left roller brush (31), a right roller brush (32), a left drive motor (33), a right drive motor (34), and a floating support assembly (35). The left drive motor (33) and the right drive motor (34) drive the left roller brush (31) and the right roller brush (32) to rotate, respectively; The left roller brush (31) and the right roller brush (32) operate at different speeds so that the ultrasonic emulsification handle generates a flipping motion and a kneading motion during the rolling process.

4. The ultrasonic emulsification handle cleaning device according to claim 3, characterized in that: The left roller brush (31) and the right roller brush (32) both include a hollow brush cylinder (311), a drive motor (312) disposed inside the hollow brush cylinder (311), and a fixed shaft (313) passing through the center of the drive motor (312). The fixed shaft (313) is fixed at both ends to the floating support assembly (35); The stator of the drive motor (312) is fixed to the outer periphery of the fixed shaft (313), and the rotor of the drive motor (312) is fixedly connected to the hollow brush cylinder (311) to drive the hollow brush cylinder (311) to rotate around the fixed shaft (313).

5. The ultrasonic emulsification handle cleaning device according to claim 4, characterized in that: The floating support assembly (35) includes a guide rod (351) and an elastic clamping member (352); The guide rod (351) is slidably disposed on both sides of the V-shaped flow channel (2); The fixed shaft (313) is fixedly connected to the end of the guide rod (351); The elastic clamping element (352) drives the left roller brush (31) and the right roller brush (32) to approach and conform to the outer surface of the ultrasonic emulsification handle.

6. The ultrasonic emulsification handle cleaning device according to claim 4, characterized in that: The hollow brush cylinder (311) has a bristle layer (314) on its outer periphery. The bristle layer (314) is composed of multiple rows of bristle bundles (315), which are staggered along the axial and circumferential directions of the hollow brush cylinder (311). The top contours of adjacent bristle bundles (315) are arranged in a periodic up-and-down pattern, so that the bristle layer (314) as a whole forms a wavy bristle structure.

7. The ultrasonic emulsification handle cleaning device according to claim 1, characterized in that: The swirling pulse flushing mechanism (4) includes a front nozzle group (41) disposed at the front end of the V-shaped flow channel (2) and a rear nozzle group (42) disposed at the rear end of the V-shaped flow channel (2). Both the front nozzle group (41) and the rear nozzle group (42) include two or more swirling nozzles (43). The swirling nozzle (43) is connected to the cleaning fluid supply system and the compressed gas supply system respectively; The swirling nozzle (43) is connected to the cleaning fluid supply system and the compressed gas supply system respectively through the gas-liquid switching valve (46); The gas-liquid switching valve (46) is used to control the alternating entry of cleaning fluid and compressed gas into the swirling nozzle (43) to form a pulse flushing flow.

8. The ultrasonic emulsification handle cleaning device according to claim 1, characterized in that: The elastic tapping and desorption mechanism (5) includes multiple tapping columns (51), a tapping sleeve (52), and a return spring (53); The striking columns (51) are spaced apart along the length of the V-shaped flow channel (2); The lower end of the striking column (51) is connected to the return spring (53), and a striking sleeve (52) is provided on its top. The top of the tapping column (51) is positioned above the bottom surface (23) of the guide to contact the rolling ultrasonic emulsification handle.

9. The ultrasonic emulsification handle cleaning device according to claim 8, characterized in that: The bottom of the cleaning box (1) is provided with a fixed motor (54), and the output end of the fixed motor (54) is provided with a rotating shaft (55). Multiple rotating cams (56) are provided on the rotating shaft (55); The rotating cam (56) can periodically contact the bottom of the striking column (51) to drive the striking column (51) to reciprocate.

10. The ultrasonic emulsification handle cleaning device according to claim 1, characterized in that: The bottom of the cleaning box (1) is provided with a drain port (7); The drain port (7) is used to discharge the waste liquid generated during the cleaning process into the cleaning tank (1).

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