Abstract: A method for allowing production of high-purity perrhenic acid from crude rhenium sulfide by applying a dry process is provided. A method for producing an aqueous solution of perrhenic acid includes 1) a step for roasting rhenium sulfide under an oxygen-containing gas to collect gasified rhenium oxide; 2) a step for cooling and solidifying the gasified rhenium oxide while keeping sulfur oxide entrained in the gasified rhenium oxide a gaseous state, and subsequently performing solid-gas separation, thereby improving purity of rhenium oxide; and 3) a step for dissolving the solidified rhenium oxide into water, or heating and gasifying the solidified rhenium oxide and then dissolving the gasified rhenium oxide into water, to obtain the aqueous solution of perrhenic acid.

Abstract: The purpose of the present invention is to suppress the occurrence of unevenness in a rotor of an internal gear pump, suppress the formation of gaps between the end surfaces (side surfaces) of an inner rotor and an outer rotor, and to prevent a decline in volume efficiency. Thus, the pump device of the present invention includes an internal gear pump (10), in which an inner rotor (13) is inscribed to an outer rotor (12), and includes a plate member (7) which is provided to an end surface of the rotors. The plate member (7) is formed of a material having high hardness, has a shape that does not block a suction port (150), has a through-hole (73) formed therein, and has O-ring grooves (71,72), which each have a continuous shape and house an O-ring formed therein.

Abstract: A coolant supply device and supply method that can appropriately control the spraying of coolant using a single parameter. A pump (101) supplies coolant to a tool (D), and a measurement device (22) measures the discharge pressure of the pump (101). A control device (50) has a function for determining, from the rotation rate of the pump (101), the coolant flow path diameter for the tool (D) and the target value for the pump discharge pressure (target pressure) when the tool (D) is drilling.

Abstract: A working machine includes a machine body, an operation fluid tank mounted on the machine body, a hydraulic device to be operated by an operation fluid supplied from the operation fluid tank. A valve unit includes a plurality of control valves to control the hydraulic device. The control valves are arranged along a horizontal direction. A switch valve is to be connected to the control valves. A first tube member includes a first fluid tube to connect the control valve and the switch valve to each other and supports the switch valve above the control valve.

Abstract: A distortion of a signal of a magnetic position detection device is reduced so that precise position information at a high degree of accuracy can be obtained. The magnetic position detection device 100 includes a magnetic movable body 10, a bridge circuit 20, a correction circuit 30, and a detection circuit 40. The magnetic movable body 10 is magnetized so that N-poles and S-poles alternately appear and has a region in which distances between the N-poles and the S-poles are constant. The bridge circuit 20 is formed of first, second, third, and fourth field detection portions 2R1, 2R2, 2R3, and 2R4. The correction circuit 30 is formed of fifth and sixth field detection portions 2R5 and 2R6. The detection circuit 40 detects a position of the magnetic movable body 10 on the basis of a differential output Vout of the bridge circuit.

Abstract: The purpose of the present invention is to provide a small, light coolant-pump device equipped with a filter, said coolant-pump device not requiring regular maintenance. The present invention is provided with: a positive-displacement pump (9); a cyclone filter (12) provided on the intake side of the positive-displacement pump; and a non-positive-displacement pump (40) provided on the intake side of the cyclone filter (12). The cyclone filter (12) contains a primary cyclone (20) and a secondary cyclone (30) each provided with a mechanism (outlet (20c and 30c)) through which separated foreign substances (cutting debris and the like) are expelled. The present invention is set such that the discharge rate of the non-positive-displacement pump (40) is higher than the discharge rate of the positive-displacement pump (9). The positive-displacement pump (9), cyclone filter (12), and non-positive-displacement pump (40) are connected in a vertical straight line.

Abstract: The purpose of the present invention is to provide a pump device that has a function to separate foreign matter from a working fluid in which foreign matter is mixed and that is capable of supporting a large working fluid flow rate. The present invention includes a first pump that is provided above a working fluid reservoir, and a second pump that has a rotary shaft that is concentric with a rotary shaft of the first pump and that is provided further down than an inlet of the first pump. A centrifuge filtration device having functionality to separate foreign matter from the working fluid is provided in an area below the inlet of the first pump and above the second pump, and the centrifuge filtration device is disposed so that the inner diameter on the second pump side is large and the inner diameter on the first pump side is small.

Abstract: A magnetized scale (1a) in which magnetic pole pairs each formed of a first magnetic portion (11a) and a second magnetic portion (12a) having different magnetic properties are arranged with a period of a magnetic pole pair width 2?, and a magnetosensitive device (2) in which n magnetosensitive elements (21a to 21e) are arranged with a magnetosensitive element pitch P so that ?=nP may be established are arranged so as to be opposed to each other with a predetermined air gap therebetween. Output values output from the n magnetosensitive elements (21a to 21e) in parallel are analyzed to calculate a relative position between the magnetosensitive device (2) and the magnetized scale (1a) as a position detection resolution of ?/n.

Abstract: The purpose of the present invention is to provide a pump device which has the function of separating foreign matter from operating fluid containing foreign matter and which can accommodate an increase in the flow rate of the operating fluid. This pump device has: a first pump (3); a second pump (8) which has a rotating shaft coaxial with the rotating shaft (10) of the first pump (3) and which is provided below the suction opening (30i) of the first pump (3); at least one cyclone (6) which is disposed in a region above the second pump (8) and below the suction opening (30i) of the first pump (3) and which has the function of separating foreign matter from operating fluid; and a discharge opening (46o) which discharges operating fluid which contains the foreign matter separated by the cyclone (6).

Abstract: A magnetic position detection apparatus includes a substrate, a magnet, a bridge circuit including first through fourth magneto-electric converting elements formed on the substrate, and a detection circuit. A substrate surface is substantially perpendicular to a magnet magnetization direction. The second and third magneto-electric converting elements are, when viewed along the magnet magnetization direction, disposed to be on or in the vicinity of a straight line passing through a center point of a magnetic pole of the magnet and parallel to a straight line perpendicular to both the magnet magnetization direction and the magnetic mobile object. The first and fourth magneto-electric converting elements are disposed so that, when not opposed to the magnetic mobile object, a component of a substrate of a magnetic field to be applied thereto is substantially same as that of a magnetic field to be applied to the second and third magneto-electric converting elements.

Abstract: A differential amplifier generates an offset correction signal based on a rotation detection signal from a rotation detector apparatus and an offset signal. A comparator compares the offset correction signal with a threshold voltage, and outputs a binarized signal representing the comparison result. An average value signal generator circuit generates an average value signal representing the average value of the offset correction signal. The offset signal generator circuit generates the offset signal so that the signal voltage of the average value signal has a voltage value between a threshold voltage and a threshold voltage.

Abstract: A method for allowing production of high-purity perrhenic acid from crude rhenium sulfide by applying a dry process is provided. A method for producing an aqueous solution of perrhenic acid includes 1) a step for roasting rhenium sulfide under an oxygen-containing gas to collect gasified rhenium oxide; 2) a step for cooling and solidifying the gasified rhenium oxide while keeping sulfur oxide entrained in the gasified rhenium oxide a gaseous state, and subsequently performing solid-gas separation, thereby improving purity of rhenium oxide; and 3) a step for dissolving the solidified rhenium oxide into water, or heating and gasifying the solidified rhenium oxide and then dissolving the gasified rhenium oxide into water, to obtain the aqueous solution of perrhenic acid.

Abstract: A method allowing production of high-purity perrhenic acid from rhenium sulfide by applying pyrometallurgical process is provided.

Abstract: Rails 20 corresponding to lines A, B, C are provided in parallel on a bass plate 1, and coupling members 21, 22 are slidably mounted on each of the rails 20. Each of fluid controllers 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14 is mounted generally on two of these coupling members 21, 22.

Abstract: A distortion of a signal of a magnetic position detection device is reduced so that precise position information at a high degree of accuracy can be obtained. The magnetic position detection device 100 includes a magnetic movable body 10, a bridge circuit 20, a correction circuit 30, and a detection circuit 40. The magnetic movable body 10 is magnetized so that N-poles and S-poles alternately appear and has a region in which distances between the N-poles and the S-poles are constant. The bridge circuit 20 is formed of first, second, third, and fourth field detection portions 2R1, 2R2, 2R3, and 2R4. The correction circuit 30 is formed of fifth and sixth field detection portions 2R5 and 2R6. The detection circuit 40 detects a position of the magnetic movable body 10 on the basis of a differential output Vout of the bridge circuit.

Abstract: The purpose of the invention is to provide a coolant supply device and supply method that can appropriately control the spraying of coolant using a single parameter. To that end, the invention is provided with a pump (101) that supplies coolant to a tool (D), a measurement device (22) that measures the discharge pressure of the pump (101), and a control device (50). The control device (50) has a function for determining, from the rotation rate of the pump (101), the coolant flow path diameter for the tool (D) and the target value for the pump discharge pressure (target pressure) when the tool (D) is drilling.

Abstract: A magnetic position detecting device includes a magnet; first to fourth magnetoelectric conversion elements formed on a virtual plane; and a flux guide made of a magnetic material. The flux guide includes first and second protrusions provided at a distance from each other in a direction parallel to the virtual plane. A specific portion recessed in a concave shape is provided in the flux guide in a mid-portion between the first and second protrusions. The first and fourth magnetoelectric conversion elements are provided approximately in the mid-portion between the first and second protrusions. The second magnetoelectric conversion element is provided between the first protrusion and the mid-portion.

Abstract: For the purpose of obtaining a magnetic detection device which accurately detects rotational angle information of an object to be detected in a simpler configuration, the magnetic detection device includes a magnetoresistive element composed of: a magnetization fixed layer, a magnetization free layer, and a nonmagnetic intermediate layer sandwiched between the magnetization fixed layer and the magnetization free layer. A potential difference between both ends of the magnetoresistive element is fixed voltage, and a change in current value of the magnetoresistive element with respect to a change in magnetic field is detected.

Abstract: The present invention is a filter mechanism provided in a pump or the like, and the purpose thereof is to provide a filter mechanism that can eliminate foreign matter adhering to the surface of a filter and thereby can prevent clogging of filters because of foreign matter. According to the present invention, an area toward the inside in the direction of the radius of the filter is linked to an intake opening (235) of the pump (for example, a trochoid pump (22)) and, via the pump (22) to a pump ejection opening (trochoid pump ejection opening (215)), and an area between a filter (5) and (an inside wall surface (3i) of) a first casing (3) is linked to a low-pressure ejection opening (discharge opening (237)) for a working fluid.

Abstract: The purpose of the present invention is to provide a small, light coolant-pump device equipped with a filter, said coolant-pump device not requiring regular maintenance. The present invention is provided with: a positive-displacement pump (9); a cyclone filter (12) provided on the intake side of the positive-displacement pump; and a non-positive-displacement pump (40) provided on the intake side of the cyclone filter (12). The cyclone filter (12) contains a primary cyclone (20) and a secondary cyclone (30) each provided with a mechanism (outlet (20c and 30c)) through which separated foreign substances (cutting debris and the like) are expelled. The present invention is set such that the discharge rate of the non-positive-displacement pump (40) is higher than the discharge rate of the positive-displacement pump (9). The positive-displacement pump (9), cyclone filter (12), and non-positive-displacement pump (40) are connected in a vertical straight line.