Please select the most similar patent number from A, B, C and D. Which number is?
A miniature pleuston clearing and collecting device. A filter plate (20) is cylindrical; a filter cloth (21) for filtering river water is arranged on the periphery of the filter plate (20); a central water collecting barrel (22) is arranged at the center of the filter plate (20); the central water collecting barrel (22) is rotatably connected to a collecting bucket (10) by means of a rotating shaft; an axial flow pump (30) is in communication with the central water collecting barrel (22); a collecting chamber (40) is supported above the collecting bucket (10); the upper portion of the filter plate (20) extends into the collecting chamber (40); the side of the filter plate (20) rotating into the collecting chamber (40) is not connected to a bottom plate (41) of the collecting chamber (40), and an agent storage chamber (42) is arranged at a position on said side in the collecting chamber (40); two sides of the agent storage chamber (42) are externally connected to agent adding pipes (47); the side of the filter plate (20) rotating out of the collecting chamber (40) abuts against the bottom plate (41) of the collecting chamber (40), and a sewage collecting chamber (43) is located at a position on said side in the collecting chamber (40). By adding an agent around the device and pumping surrounding water bodies at the same time, the collecting bucket (10) is miniaturized and algae is cleared; by means of the filter plate (20) and the collecting chamber (40), algae subjected to flocculation is directly collected.
A: Disclosed are a device for clearing an object floating on water and a clearing method therefor. The device comprises a ship body, wherein a cavity is provided in a tail end of the ship body; a collecting tank is fixed to an inner wall of the bottom of the cavity by means of a supporting frame; a channel is fixed to top ends of two sides of the collecting tank that are away from each other; an end of the channel away from the collecting tank extends to an outer side of the ship body and is fixedly provided with a debris inlet; a water suction pump is fixed to an outer wall of the collecting tank close to the channel; an electric motor is fixed to an inner wall of the side of the cavity that is close to the head of the ship body; a power output shaft of the electric motor is hinged to a torsion rod by means of a rotary disk; a sliding groove is fixed to an inner wall of the bottom of the cavity by means of a mounting frame; an inner wall of the bottom of the sliding groove is attached to an outer wall of the torsion rod; a clearing groove is further provided between the sliding groove and the collecting tank; and a push plate is arranged at an end of the torsion rod that is located inside the collecting tank. By means of the cooperative use of the various devices above, objects floating on water can be cleared more thoroughly, the debris clearing efficiency can be significantly improved, and the effect of effectively treating the problem of water pollution in a short time can be achieved.
B: An automatic pet waterer comprises a water reservoir (10), a water bowl (20) provided at an opening of the water reservoir (10), and a light-up water pump (30) fixedly provided in the water reservoir (10). The water bowl (20) is provided with a water spraying nozzle (21) connected to a water outlet of the light-up water pump (30) by means of a water pipe. A water-filtering device (40) is provided under the water bowl (20) and positioned inside the water reservoir (10). The water-filtering device (40) comprises a filter holder (41) and a filter unit (42) received in the filter holder (41). A nylon screen (43) is provided between the filter holder (41) and the filter unit (42). The water bowl (20) has multiple water recycling ports (22) arranged within a region covered by the water-filtering device (40). A housing of the water reservoir is provided with a transparent strip-shaped member (11) perpendicular to a horizontal plane. A user can see the level of water inside the water reservoir by means of the transparent strip-shaped member (11). The waterer has a simple structure, thereby reducing processing costs. Moreover, the waterer has multiple functions which meet practical requirements of users, and provides pets with good quality of drinking water.
C: Disclosed are an automatic high-pressure filter press, and a filter pressing, residue discharging and back washing method therefor. The automatic high-pressure filter press comprises: a filter press cylinder (1), filter press plates (2, 3, 4, 5), a first hydraulic cylinder (9), a first connecting pipe (6), a residue-scraping device, an automatic residue-discharging device, a filtered water drainage device, a back washing device, a material inlet pipe (31) and a machine frame (21), wherein an active filter press plate (5), a movable passive filter press plate (4), a fixed passive filter press plate (3) and an end cover filter press plate (2) are provided inside the filter press cylinder (1); the residue-scraping device is arranged above a position between the end cover filter press plate (2) and a fourth hydraulic cylinder (32); and an automatic residue-discharging bucket (40), a water collection tank (42), and a belt conveyor (23), which is located outside the machine frame, are arranged below the position between the end cover filter press plate and the fourth hydraulic cylinder. During operation, an external slurry pump feeds a slurry to positions between the filter press plates (2, 3, 4, 5) inside the filter press cylinder (1) via the material inlet pipe (31); the first hydraulic cylinder (9) pushes the active filter press plate (5) to press the slurry inside the filter press cylinder (1) into filter residue cakes, and the filter residue cakes are discharged to the outside of the machine by means of the automatic residue-discharging device; by means of the configuration of water collection cavities (47, 54, 66, 73) being in communication with the first connecting pipe (6), filtered water from the filter press plates (2, 3, 4, 5) is collected and drained into the first connecting pipe (6), and is then drained to the outside of the machine; and for back washing, back washing water is introduced, enters the water collection cavities (47, 54, 66, 73) by means of the configuration of the first connecting pipe (6) being in communication with the water collection cavities (47, 54, 66, 73), and then performs back washing for filter screens.
D: Disclosed is a double-sealing type apparatus for collecting spray-freezing ice ball particles, comprising a collector (10), a collection trolley (20), an evacuating device (30), a heating device (40), a first sealing pad (50) and a second sealing pad (60). The collector (10) is located on the collecting trolley (20), and the collector (10) is provided with a collection opening corresponding to a discharge port at the bottom of a freezing tower (200). The collection opening is further provided with a water inlet (13), the water inlet (13) being in communication with a space formed when the collection opening is aligned with the discharge port, and when water is injected into the water inlet (13), an ice seal being formed between the collection opening and the discharge port. The evacuating device (30) communicates with an inner space of the collector (10), the heating device (40) and the first sealing pad (50) are located at the collection opening, the first sealing pad (50) forms a seal between the collection opening and the discharge port when the collection opening is aligned with the discharge port, and the second sealing pad (60) is located at the bottom of the collector (10). Further disclosed is a collecting method using the apparatus. The apparatus has a good sealing performance, and can achieve the smooth transfer of ice balls in the freezing tower.
Answer: A