Abstract: Provided is joint unit having a resin tube, a joint structure, and a nut, the joint structure has a guide part that guides the outer circumferential face of the resin tube, a protrusion that forms an insertion groove between the guide part and the protrusion, and a fixing part that fixes the resin tube inserted in the insertion groove, the tip of the protrusion is located closer to a main body than the tip of the guide part, the nut has a recessed part having an inner diameter greater than a first outer diameter of the guide part and smaller than a second outer diameter of the fixing part, and the tip of the fixing part in contact with the recessed part bites into the outer circumferential face of the resin tube in a state where the nut is fastened to the joint structure.

Abstract: Provided is a liquid supply device including: a plug having a plug side liquid channel; and a socket having a socket side liquid channel. The plug has a groove having a fixing groove, the socket has a body having the socket side liquid channel, a gripping unit gripped by a robot, and a sleeve member configured to adjust a position of the body relative to the gripping unit, the tip of the body runs annularly about the socket axis and has lock balls, and the sleeve member switches a state between a connected state where the lock balls are secured in the fixing groove and a released state where the lock balls are not secured in the fixing groove.

Abstract: Provided is a pressure detection device that can suppress variation in the pressure detection characteristics of a pressure detection unit from occurring due to individual differences in the shape of flow passage units, variation in work in mounting the flow passage unit on the pressure detection unit, or the like. The pressure detection device including: a pressure detection unit; a flow passage unit; and a mounting unit configured to removably mount the flow passage unit on the pressure detection unit. The pressure detection unit has a pressure detecting diaphragm and a sensor rod arranged at the center part of a first surface of the pressure detecting diaphragm. The flow passage unit has a flow passage diaphragm, and a displacement of the flow passage diaphragm in contact with the top surface is transmitted to the pressure detecting diaphragm via the sensor rod.

Abstract: Provided is a pressure detection device which prevents variation of pressure detection characteristics. The pressure detection device including: a pressure detection unit configured to detect a pressure transmitted to a pressure detecting surface; a flow passage unit in which a pressure transmitting surface; and a mounting unit for removably mounting the flow passage unit on the pressure detection unit. The pressure detection unit has a sensor unit having the pressure detecting surface, a holding unit configured to hold the sensor unit to be movable along an axis orthogonal to the pressure detecting surface, and an urging unit configured to generate urging force to urge the sensor unit toward the pressure transmitting surface. The mounting unit mounts the flow passage unit on the pressure detection unit with the pressure detecting surface being in contact with the pressure transmitting surface under urging force generated by the urging unit.

Abstract: Provided is a liquid supply device including: a plug having a plug side liquid channel; a socket having a socket side liquid channel; a hand configured to grip the socket and arrange the socket in a predetermined attitude at a three-dimensional position within the motion range; and an image capturing unit configured to recognize the orientation of the plug axis of the plug. The hand grips the socket so that the socket and the plug are in an attitude where the orientation of a socket axis matches the orientation of the plug axis recognized by the image capturing unit, and the socket gripped by the hand is inserted in the plug to couple the socket side liquid channel to the plug side liquid channel.

Abstract: Provided is a flow rate regulating device including a valve body section having a flat valve body surface; a main body section including a valve chamber, an inflow channel, an outflow channel, and a communication channel; a valve seat section having a flat valve seat surface provided around an inflow opening; a regulation mechanism that moves the valve body section along an axis to regulate a distance between the valve body surface and the valve seat surface; and a control unit that controls the regulation mechanism so that the valve body section moves in a movement range in which the valve body surface and the valve seat surface maintain a non-contact state, wherein a channel cross-sectional area of the communication channel is smaller than each of a channel cross-sectional area of the inflow channel and a channel cross-sectional area of the outflow channel.

Abstract: Provided is a tube pump system which includes: a pair of roller units which are rotated around an axis line from a closing position to a releasing position; a pair of drive units which are configured to respectively rotate the pair of roller units; a control unit which is configured to control each of the pair of drive units; and a pressure sensor which is configured to detect a pressure of a liquid in a pipe connected to the other end of the tube, wherein the control unit controls a first rotation angle when the first roller unit passes through the closing position and a second rotation angle when the second roller unit passes through the releasing position such that fluctuation of the pressure of the liquid when the pair of roller units are rotated through at least one revolution falls within a predetermined value.

Abstract: Provided is a liquid supply device including: a plug having a plug side liquid channel; a socket having a socket side liquid channel; a hand configured to grip the socket and arrange the socket in a predetermined attitude at a three-dimensional position within the motion range; and an image capturing unit configured to recognize the orientation of the plug axis of the plug. The hand grips the socket so that the socket and the plug are in an attitude where the orientation of a socket axis matches the orientation of the plug axis recognized by the image capturing unit, and the socket gripped by the hand is inserted in the plug to couple the socket side liquid channel to the plug side liquid channel.

Abstract: Provided is a thermal flow meter including a conductive measurement tube including an inlet through which liquid enters and an outlet through which the liquid exits and including an internal flow passage extending along an axis, and a sensor substrate including a heating resistance wire and a temperature detecting resistance wire formed on a detection surface along the axis, and in the detection surface, an insulation area is formed where the heating resistance wire and the temperature detecting resistance wire are coated with a thin-film insulating material, and the insulation area is joined to the measurement tube along the axis.

Abstract: A liquid transfer connector according to the present disclosure is provided with a plug having a plug body in which a fluid channel is formed, a socket having a socket body in which a fluid channel communicating with the fluid channel is formed when the plug is connected, a plug body housing part provided in the socket body, that receives and houses a distal end of the plug body inserted therein at a time of connection, an O-ring provided in the plug body housing part, that seals an outer periphery of the plug body inserted in the socket body and a cleaning liquid supply hole that supplies a cleaning liquid into the plug body housing part at a position opposite to the distal end of the plug body with respect to the O-ring.

Abstract: Provided is a tube pump including: first and second roller units that rotate about the axis while being in contact with a tube; a drive shaft arranged on the axis and coupled to the first roller unit; a drive cylinder arranged on the axis and coupled to the second roller unit; a first drive unit configured to rotate the drive shaft in a predetermined direction about the axis and having a first drive shaft configured to rotate about the axis; and a second drive unit configured to rotate the drive cylinder in the predetermined direction about the axis and having a second drive cylinder configured to rotate about the axis, the drive shaft is arranged to penetrate through the second drive unit along the axis, and the drive cylinder is arranged on an outer circumference side of the drive shaft and rotatably about the axis independently of the drive shaft.

Abstract: Provided is a pressure detection device including a pressure detection unit and a channel unit. The channel unit has a contact part arranged in contact with the pressure detection unit, the contact part has a protective film arranged in contact with a pressure detection surface and configured to block contact between the pressure detection surface and a liquid and a body forming an opening arranged at an end of the channel, the protective film and the body are formed of a thermoplastic fluorine resin, and the protective film is arranged so as to close the opening of the body and welded to the body in an annular region extending circumferentially about the axis.

Abstract: Provided is a fluid transfer connector plug that allows for easy engagement of keys with key grooves. The fluid transfer connector plug includes: a plug body having a proximal end and a distal end, the proximal end allowing a hose to be fixed thereto, the distal end being removably connected to a socket, the plug body including a fluid channel communicating with the hose; a key plate on an outer periphery of the plug body, the key plate being rotatable relative to the plug body; and two or more keys on the key plate. The plug further includes a main key having a larger circumferential width than that of each of the other keys.

Abstract: Provided is a pressure detection device comprising a pressure detection unit configured to detect pressure transmitted to a pressure detecting surface; a flow passage unit including a flow passage configured to allow fluid to flow along a flow direction from an inflow port to an outflow port, and a pressure transmitting surface configured to transmit pressure of fluid flowing through the flow passage to the pressure detecting surface; and a mounting mechanism by which the flow passage unit is removably mounted on the pressure detection unit. The pressure detecting surface includes a sliding layer having a sliding property for when the pressure detecting surface comes in contact with the pressure transmitting surface.

Abstract: There is provided a flow rate regulating device including a valve body section having a flat valve body surface, a valve seat section having a flat valve seat surface, a regulation mechanism that moves the valve body section along an axis, and a control unit that controls the regulation mechanism, wherein the regulation mechanism has a stepping motor that rotates a drive shaft about the axis, and a moving member that moves along the axis in response to the rotation of the drive shaft and is coupled to the valve body section, and the control unit controls the stepping motor so that the valve body section moves in a movement range in which the valve body surface and the valve seat surface maintain a non-contact state, in accordance with an excitation signal that changes by a micro step unit obtained by dividing a step by a predetermined division number.

Abstract: A flow passage unit is detachably mounted on a pressure detection unit and detects a pressure to be transmitted to a pressure detection part. The flow passage unit includes a flexible flow passage part including a flexible flow passage which introduces liquid, flowing in the flexible flow passage part from an inflow port, to an outflow port, and which is made of a flexible material. The flow passage unit also includes a body portion configured to form a pressure transmitting space which surrounds an outer peripheral surface of the flexible flow passage part. The flow passage unit also includes a pressure transmitting part mounted on the body portion and having a thin-film shape. One surface of the pressure transmitting part faces the pressure transmitting space, and the other surface of the pressure transmitting part is capable of coming into contact with the pressure detection part.

Abstract: A thermal flowmeter including a measurement tube that has an inflow port into which a liquid flows and an outflow port that allows the liquid which flows in from the inflow port to flow out, and has an internal flow passage where the liquid flows formed to extend along an axis, and a plurality of detection sections each of which has a heating resistor and a temperature detecting resistor along the axis and is provided at the measurement tube, and a control section that calculates a flow rate of the liquid flowing through the internal flow passage based on signals from the plurality of detection sections, wherein the plurality of detection sections are respectively provided with predetermined intervals left in a circumferential direction with the axis as a center.

Abstract: To prevent a defect in which particles such as impurities flow into a liquid that flows in from an inlet flow path and discharged from an outlet flow path. Provided is a suck-back valve including: a housing part; a valve element part; a diaphragm part; an open-close mechanism that brings the valve element part and a valve seat part into contact or separates the valve element part and the valve seat part from each other to switch between a closed state and an open state; and a suck-back mechanism that moves the diaphragm part in a direction in which the diaphragm part separates from the valve seat part to increase a volume of a valve chamber. The valve element part and the diaphragm part are molded integrally, the open-close mechanism is disposed in an adjacent space, and the valve element part and the open-close mechanism are coupled in the adjacent space.

Abstract: The fluid transfer connector includes: a plug including a plug body, the plug body including a fluid channel; a socket including a socket body, the socket body including a fluid channel that communicates with the fluid channel of the plug body when the plug is connected to the socket; and a driving mechanism configured to adjust a distance between the plug body and the socket body. The plug body and the socket body can be stopped by the driving mechanism at an initial position where the plug body and the socket body are spaced from and face each other, a connecting position where the fluid channel of the plug body communicates with the fluid channel of the socket body, and an intermediate position between the initial position and the connecting position.