Abstract: A snivel suction device includes a base plate, two pump cylinders, two pistons, two connection rods, a pedal and two casings. Each pump cylinder is provided with a manifold containing a suction check valve and a release check valve. Two suction pipes are connected between a suction tee and the suction check valves of the manifolds. Two release pipes are connected between a release tee and the release check valves of the manifolds. A relief valve is installed at one of the casings. The relief valve has a knob, an adjustment member, a bolt, a valve body, a spring, a plug and a sound member. By operating the two ends of the pedal alternately, the two pistons are operated to suck and release air. Particularly, the relief valve can be actuated when a higher vacuum pressure has occurred in the suction pipes so as to protect the user's nasal mucosa.

Abstract: A snivel suction device includes a base, two pumps, two pistons, two piston rods, a pedal and two casings. Two valve bodies are connected to the pumps and each valve body is connected to a suction pipe and a release pipe. The two suction pipes are connected to a suction manifold and the two release pipes are connected to a release manifold. A release valve is fixed to one of the casings and connected between the suction manifold and one of the suction pipes. The release valve has a knob, an adjustment member, a bolt, a valve, a spring, a block and a sound member. By operating the two ends of the pedal alternatively, the two pumps are operated to suck and release air. When sucking the snivel and the suction pipe contacting the nasal mucosa, the release valve releases the pressure to protect the user's nasal mucosa.

Abstract: A foot air-extracting and inflating machine includes a machine body having a support frame provided with a pivot support member for pivotally assembling a pedal having its underside disposed with two push-rod pivot support members. The machine body is installed inside with two pumps respectively provided with a piston having a push rod pivotally combined with the push rod pivot support member of the pedal. Each pump has its lower side juxtaposed with two one-way valves respectively positioned in the two-way direction and having its lower side bored with air holes covered with a valve plate. An air suction tube and an exhaust tube are assembled under each pump, respectively aligned to the one-way valves. An air suction manifold communicates the two air suction tubes and connected with an air suction outer tube, and an exhaust manifold communicates the two exhaust tubes and connected with an exhaust outer tube.

Abstract: A snivel aspirator includes a bottle and a snivel aspirator main body. The bottle has a bottle lid having an air-aspirating tube communicating with the bottle and having a non-return valve. The bottle lid further has an air-sucking tube communicating with the bottle and disposed with an air-valve switch. The snivel aspirator main body connected with the air-sucking tube of the bottle has a filth-collecting box and an air-outgoing passageway communicating with the air-sucking tube of the bottle by a connecting tube, disposed with an air-valve press button fixed with an insert rod having a spring fitted thereon and having its lower end secured with a clogging block facing the air-outgoing passageway. The snivel aspirator main body has another side provided with a snivel-aspirating tube communicating with the filth-collecting box.