Task: Translation
Input (Czech): Za° zen  pro samo inn  uzav r n  Ükrtic ho ventilu na navij c ch hadic sest v  ze stojanu (14), nesouc ho oto n² nav jec  buben (12). D le sest v  ze sac  hadice (10), kter  je navinuteln  nebo odvinuteln  z oto n ho nav jec ho bubnu (12) a z uzav rac ho Ükrtic ho ventilu (30), kter²m plyn (G) prot k  ze sac  hadice (10) do odtahovac ho syst mu (1), kdy  je uzav rac  Ükrtic  ventil (30) v otev°en  poloze (B) a kter²m je pr tok plyn (G) ze sac  hadice (10) do odtahovac ho syst mu (1) uzav°en, kdy  je uzav rac  Ükrtic  ventil (30) v uzav°en  poloze  (C). Ke stojanu (14) je p°ipojen prost°edek (31) pro ot  en  uzav rac ho Ükrtic ho ventilu (30) do otev°en  polohy (B) a do uzav°en  polohy  (C). K nav jec mu bubnu (12) je p°ipojeno za° zen   (32) pro zm nu polohy, kter  spolupracuje s prost°edkem (31) pro ot  en  pro otev°en  uzav rac ho Ükrtic ho ventilu (30) b hem po  tku ot  en  nav jec ho bubnu (12) ve sm ru (A) odv jen  sac  hadice (10) a pro uzav°en  uzav rac ho Ükrtic ho ventilu  (30) b hem po  tku ot  en  nav jec ho bubnu (12) ve sm ru (U) nav jen  sac  hadice (10).\
Output (English): The device for the self-closing of the throttle valve on the hose reel in one of the racks (14) carrying the rotatable reel (12). Part in the suction hose (10), which can be wound or unwound from the rotatable reel (12) and from the shut-off valve (30) to which the gas (G) protrudes from the suction hose (10) ) to the towing system (1) when the throttle valve (30) is closed in the open position (B) and the flow of gas (G) from the suction hose (10) to the towing system (1) closed when the throttle valve (30) is closed in the closed position (C). Means (31) are connected to the stand (14) to close the throttle valve (30) to the open position (B) and to the closed position (C). A position change device (32) is connected to the outer drum (12), which cooperates with the means (31) for opening the closing valve (30) during the opening. only open the drum (12) in the direction (A) of the drain hose (10) and to close the stop valve (30) during the rewind (12) ) in the (U) direction only the suction hose (10). \ t