Relief valve device
AssigneeKosmek Ltd.
InventorAkira ARISATO
Life of this patent
Estimating the term…
Abstract
A first relief valve chamber (3) of a main relief valve (10) and a second relief valve chamber (7) of an auxiliary relief valve (11) are provided in series in a valve case 1. The first relief valve chamber (3) includes a valve seat chamber (4) at the right and a valve chamber (5) at the left. A first valve member (30) in the valve chamber (5) is biased toward a valve seat member (18) in the valve seat chamber (4) by a first relief spring (40). A second valve member (48) in the second relief valve chamber (7) is biased toward a second valve seat (47) by a second relief spring (50).
Claims6
A relief valve device comprising
- a main relief valve (10) and an auxiliary relief valve (11) which are provided in series in a valve case (1), wherein
- a relief pressure of the auxiliary relief valve (11) set by a second biasing member (50) provided for the auxiliary relief valve (11) is lower than a relief pressure of the main relief valve (10) set by a first biasing member (40) provided for the main relief valve (10).
A relief valve device comprising a main relief valve (10) and an auxiliary relief valve (11), wherein a first relief valve chamber (3) of the main relief valve (10) and a second relief valve chamber (7) of the auxiliary relief valve (11) are communicatively connected in order in a valve case (1),
- the main relief valve (10) comprises:
- a valve seat member (18) provided in the first relief valve chamber (3);
- a first valve member (30) inserted into the first relief valve chamber (3) so as to be movable, and biased toward the valve seat member (18) by a first biasing member (40) provided in the valve case (1);
- a first valve surface (35) provided on the first valve member (30);
- and
- a first valve seat (25) provided on the valve seat member (18) so as to face the first valve surface (35),
- the auxiliary relief valve (11) comprises:
- a second valve member (48) inserted into the second relief valve chamber (7) so as to be movable;
- a second valve surface (49) provided on the second valve member (48);
- a second valve seat (47) provided in the second relief valve chamber (7) so as to face the second valve surface (49);
- and
- a second biasing member (50) provided in the valve case (1) so as to bias the second valve surface (49) toward the second valve seat (47), and
- a relief pressure of the auxiliary relief valve (11) set by the second biasing member (50) is lower than a relief pressure of the main relief valve (10) set by the first biasing member (40).
A relief valve device comprising a main relief valve (10) and an auxiliary relief valve (11), wherein a first relief valve chamber (3) of the main relief valve (10) and a second relief valve chamber (7) of the auxiliary relief valve (11) are communicatively connected in order in a valve case (1),
- the main relief valve (10) comprises:
- a first valve member (30) inserted into the first relief valve chamber (3) so as to be movable;
- a first valve surface (35) provided on the first valve member (30);
- a first valve seat provided in the first relief valve chamber (3) so as to face the first valve surface (35);
- and
- a first biasing member (40) provided in the valve case (1) so as to bias the first valve surface (35) toward the first valve seat,
- the auxiliary relief valve (11) comprises:
- a second valve member (48) inserted into the second relief valve chamber (7) so as to be movable;
- a second valve surface (49) provided on the second valve member (48);
- a second valve seat (47) provided in the second relief valve chamber (7) so as to face the second valve surface (49);
- and
- a second biasing member (50) provided in the valve case (1) so as to bias the second valve surface (49) toward the second valve seat (47), and
- a relief pressure of the auxiliary relief valve (11) set by the second biasing member (50) is lower than a relief pressure of the main relief valve (10) set by the first biasing member (40).
Dependencies are inferred from the claim text.