Please select the most similar patent number from A, B, C and D. Which number is?
Provided is a juicer automatic packaging apparatus comprising an automatic door panel, comprising an automatic cup-packaging apparatus and an automatic juice-dispensing apparatus; the automatic cup-packaging apparatus comprises a base disk (1), a cup-dispensing apparatus (2), a cover-dispensing apparatus (3), and a cover-pressing apparatus (4); the cup-dispensing apparatus (2), cover-dispensing apparatus (3), and cover-pressing apparatus (4) are higher than the base disk (1); the base disk (1) is connected to an electric motor one (5); the electric motor one (5) rotates to drive the base disk (1) to rotate about its center; the automatic juice-dispensing apparatus comprises a funnel (201), a juice-storage tube (202), a connecting member (203), and a guide tube (209); the bottoms of the guide tube (209) and the funnel (201) are connected; one end of the juice-storage tube (202) is closed, the other end has an opening (204), and in the middle, another opening (205) is provided on the upper part; the bottom of the guide tube (209) is located in the opening of the upper part at the middle of said juice-storage tube; the automatic packaging apparatus also comprises a door panel; the door panel comprises a door panel body (301) and a delivery opening (302); an upper stop plate (303) is provided above the delivery opening (302), and a lower stop plate (307) is provided beneath the delivery opening (302); the door panel also comprises an electric motor four (304); by means of a drive rod, the electric motor four (304) drives the lower stop plate (307) in vertical motion; the upper stop plate (303) is connected to the door panel body (301) by means of a resilient apparatus (305).
A: A single-fulcrum magnetomotive centrifugal blood pump is provided with a pump body and a driving device. The pump body comprises a top cap (1), a base (2), an impeller (3) and outer magnetic steel (305); the base (2) is provided with at least three layers of bosses (201, 202, 203); the boss (201) at the top end is provided with a groove (204); a rolling ball (205) is placed in the groove (204); a patchhole (206) is arranged at the center of the bottom of the base (2); vanes (301) and an annular joint (302) are arranged on the impeller (3); connecting rods (303) are arranged in the inner circle of the annular joint (302) and gathered around the center of the inner circle of the annular joint (302); a circular arc central groove (304) is formed at the bottom of the gathering position of the connecting rods, and is matched with the rolling ball (205) in the groove (204) in the boss to form a single-fulcrum bearing; the outer magnetic steel (305) is arranged inside the vanes (301); the driving device comprises a transmission shaft (5) and a driving motor (4) provided with a motor rotor (401); the motor rotor (401) is sleeved with the transmission shaft (5); the transmission shaft (5) is inserted into the patchhole (206); and inner magnetic steel (501) is arranged inside the transmission shaft (5). The blood pump can effectively reduce the incidence rate of thrombus and hemolysis as the pre-filling quantity is less; the structure is simple and stable; the mounting is convenient; and the cost is low.
B: A mortar car with a self-walking hydraulic chassis includes a self-walking chassis and a mortar upper fixture (6) mounted on the self-walking chassis. The self-walking chassis includes a frame (1), a hydraulic power module (2) fixed on the frame (1), more than one bidirectional drive wheel groups (3) and a control module (4). The bidirectional drive wheel group (3) includes a walking bracket (301), wheels (302) and a steering module. The walking bracket (301) is fixed on a longitudinal beam (11) and further fixed on a chassis frame beam (102) of the frame (1) through the longitudinal beam (11). More than one distance measuring sensors (303) used for detecting the distance between wheels (302) and the inner side walls of rails are arranged on the walking bracket (301). The control module (4) receives the distance signals collected by the distance measuring sensors (303) and judge whether it is safe based on the distance signals, then outputs a control signal to the steering module. The hydraulic power module (2) includes a driving motor (201), a hydraulic pump (202) and a hydraulic motor (203). The output end of the hydraulic motor (203) is connected to one wheel (302) by a transmission mechanism. The invention has advantages of simple and compact structure, low cost, broad applicability, high automation, flexible steering and other states.
C: A freshly squeezed orange juice bottling production line for a vending machine, comprising a production line structure frame (1), a bottle grabbing mechanical arm (2), a mechanical arm connecting plate (3), a horizontal delivery mechanism (4), a filling apparatus (5), a lid applying mechanism (6), a lid adjusting mechanism (7), a lid tightening mechanism (8), and a rotary product-output mechanism (9). The bottle grabbing mechanical arm (2) is disposed on and tightly fixed to the mechanical arm connecting plate (3), the mechanical arm connecting plate (3) is disposed on and tightly fixed to the horizontal delivery mechanism (4), the horizontal delivery mechanism (4) is disposed on and tightly fixed to the production line structure frame (1), the filling apparatus (5) is disposed on and tightly fixed to the left side of the lid applying mechanism (6), the lid adjusting mechanism (7) is disposed on and tightly fixed to the right side of the lid applying mechanism (6), the lid applying mechanism (6) is positioned above the production line structure frame (1), the lid tightening mechanism (8) is disposed on the right side of the lid adjusting mechanism (7) and is tightly fixed above the production line structure frame (1), and the rotary product-output mechanism (9) is disposed under the horizontal delivery mechanism (4) and is fixed to the production line structure frame (1). The present production line applies and tightens the lids of filled bottles of freshly squeezed orange juice in a vending machine and outputs same, thus implementing automatic production processing and control.
D: Provided is a wheat straw crushing apparatus, comprising a machine body (1), a base (101), and casters (102), the machine body being fixedly mounted on one end of the upper surface of the base, the casters being rotatably mounted on the bottom of the base. A first motor (2) is fixedly mounted on the other end of the upper surface of the base, a drive roller (201) is fixedly connected to a power output end of the first motor, and a sound insulation cover (202) is fixedly arranged on the surface of the first motor. A rotating disc (3) is rotatably arranged in an inner cavity of the machine body, a crushing cutter head (302) is fixedly mounted on the surface of the rotating disc, an arcuate base (303) is fixedly mounted on the bottom of the inner cavity of the machine body, an anti-impact device (304) is fixedly mounted on the upper surface of the arcuate base, and the anti-impact device and the crushing cutter head are fitted with each other. A conveyor belt (4) is fixedly mounted on one end of the top of the machine body. The crushing apparatus, when crushing wheat straw, can feed material automatically, reducing the labour intensity of the operator while also improving wheat straw crushing efficiency and quality.
Answer: C