Abstract: Disclosed is an electronic expansion valve. The electronic expansion valve includes a valve seat provided with a valve cavity and a valve port, wherein the valve port is arranged at an end portion of the valve cavity; a guide sleeve fixedly arranged on the valve seat, the guide sleeve is provided with a first guide hole, and the first guide hole is in communication with the valve cavity; and a valve needle movably arranged in the guide sleeve, wherein a first end of the valve needle penetrates out of the first guide hole to be arranged corresponding to the valve port, the valve needle is in clearance fit with the first guide hole, the valve needle is configured to control the valve port to be opened or closed, and a swingable amplitude of the valve needle in the first guide hole ranges from 0.4° to 2.4°.

Abstract: Some embodiments of the present invention provides an electronic expansion valve, including: a valve body, the valve body having a valve port; a valve head, movably provided in the valve body, the valve head being configured for blocking the valve port; a rod member, the rod member having a first end and a second end opposite to each other, wherein the first end is provided in a cavity of the valve head in a penetrating manner, the second end has a positioning structure, the positioning structure is configured for positioning a circumference of the rod member, the positioning structure is a positioning flat surface, and the positioning flat surface is parallel to an axis of the rod member; a valve sleeve, provided in the cavity of the valve head.

Abstract: Some embodiments of the present invention provide an electronic expansion valve and assembling method of electronic expansion valve, the electronic expansion valve includes: a housing; a guide sleeve; a screw; a rotor being drivingly connected with the screw; and a valve needle assembly movably disposed in the housing, one end of the screw being connected with the valve needle assembly so as to drive the valve needle assembly to move axially by means of the screw. A guide segment and a press-fit segment which are in communication with each other are disposed between an inner wall of the housing and an outer wall of the guide sleeve, a spacing between the guide sleeve and the housing located on the guide segment is greater than a spacing between the guide sleeve and the housing located on the press-fit segment.

Abstract: The present application provides a continuous reaction system, a ferromanganese phosphate precursor, a lithium iron manganese phosphate, a preparation method, and a secondary battery. A method for preparing a ferromanganese phosphate precursor provided in the present application is a continuous preparation method, thereby improving the production efficiency, and obtaining the ferromanganese phosphate precursor with small particle size, narrow particle size distribution, high crystallinity, monocrystal phase, regular appearance, high tap density, high batch stability, and high batch consistency.

Abstract: Some embodiments of the present disclosure provide an electronic expansion valve, including: a valve body, the valve body having a valve port; a valve head portion, movably provided in the valve body, the valve head portion including a valve head and a pressing sleeve, the valve head having an accommodating cavity, the end of the accommodating cavity close to the valve port having a bottom wall, a through hole being provided on the bottom wall, and the valve head being used for blocking the valve port; a guide sleeve, provided in the valve body, the valve head portion being inserted in the guide sleeve; a driving portion, movably provided in the valve body, an end of the driving portion penetrating the pressing sleeve, and a channel being provided on the end of the driving portion.

Abstract: Disclosed is a flow regulating valve. The flow regulating valve includes: a valve body structure, where the valve body structure includes a main body and a sealing seat connected with the main body, the sealing seat is provided with a valve port, and the sealing seat is made of a nonmetallic material; and a valve head movably arranged in a cavity of the main body to close or open the valve port, where the valve head is made of a metal material, and a hardness of the sealing seat is less than a hardness of the valve head.

Abstract: The disclosure provides a valve core assembly and an electronic expansion valve having the valve core assembly. The valve core assembly includes: a valve head, herein an inner wall surface of the valve head is provided with a flange portion which is inwardly protruded, and the flange portion is configured to divide an inner cavity of the valve head into an upper cavity body and a lower cavity body; a screw penetrating into the valve head; and an annular member sleeved at a lower end of the screw and located in the lower cavity body, herein an upper end face of the annular member is in contact with a lower end face of the flange portion. Herein the flange portion is provided with a balancing channel, and the balancing channel connects the upper cavity body and the lower cavity body.

Abstract: A valve needle assembly and an electronic expansion valve having same. The valve needle assembly includes: a valve sleeve, the valve sleeve having a cavity, and the valve sleeve having a first end and a second end arranged opposite each other; a bushing movably arranged in the cavity, the bushing being in limiting fit with the first end of the valve sleeve, and the bushing being used for driving the valve sleeve to move; a spring arranged in the cavity, wherein one end of the spring is connected with the bushing, and the other end of the spring is connected with the second end of the valve sleeve; and a sealing member fixedly arranged at the second end of the valve sleeve, the sealing member being configured for closing a valve port.

Abstract: A flow regulating valve comprises: a valve body, wherein the valve body has a valve port, an inner wall of the valve port has a first conical surface and a second conical surface, an included angle between a generatrix of the first conical surface and a radial plane of the valve body is b, and an included angle between a generatrix of the second conical surface and the radial plane of the valve body is c; and a valve head, wherein the valve head is movably disposed in the valve body to close or open the valve port, the valve head has a chamfer, and an included angle between the chamfer and the radial plane of the valve body is a; where, b<a<c.

Abstract: Disclosed is a flow regulating valve. The flow regulating valve includes: a valve body, wherein the valve body is provided with a valve port, and an inner wall of the valve port is provided with a first conical surface; and a valve head, wherein an end of the valve head is provided with a fillet, the valve head is movably arranged in the valve body, to close or open the valve port, and when the valve port is closed, the fillet abuts against the first conical surface. The inner wall of the valve port is further provided with a second conical surface, and an end with a smaller diameter of the second conical surface is connected with an end with a larger diameter of the first conical surface.

Abstract: A pollen polysaccharide extract prepared by the following method: mixing rape pollen with water, then heating and stirring for extraction, filtering, mixing filtrates, adding chitosan to a resulting filtrate to obtain a liquid to be clarified, keeping the liquid to be clarified at 60-80° C. for at least 1 h, cooling and allowing to stand, and performing solid-liquid separation to obtain a liquid, namely the pollen polysaccharide extract.

Abstract: An electronic expansion valve, comprising a valve seat assembly and a valve core assembly. The valve core assembly is disposed in the valve seat assembly. The valve seat assembly comprises a valve seat, a valve seat core, and a guide sleeve. The valve seat is provided with a valve cavity, one end of which is open. A through hole is provided on the valve seat core; the end of the conduction portion close to the guide sleeve is circumferentially provided with an inclined surface inclined outwards. The valve core assembly comprises a valve head. The end of the valve head close to the valve seat core is provided with a sealing surface. The valve head is driven to move close to or away from the valve seat core, so as to adjust the gap between the inclined surface and the sealing surface.

Abstract: A pollen polysaccharide extract prepared by the following method: mixing rape pollen with water, then heating and stirring for extraction, filtering, mixing filtrates, adding chitosan to a resulting filtrate to obtain a liquid to be clarified, keeping the liquid to be clarified at 60-80° C. for at least 1 h, cooling and allowing to stand, and performing solid-liquid separation to obtain a liquid, namely the pollen polysaccharide extract.

Abstract: Some embodiments of the present invention provide an electronic expansion valve and assembling method of electronic expansion valve, the electronic expansion valve includes: a housing; a guide sleeve; a screw; a rotor being drivingly connected with the screw; and a valve needle assembly movably disposed in the housing, one end of the screw being connected with the valve needle assembly so as to drive the valve needle assembly to move axially by means of the screw. A guide segment and a press-fit segment which are in communication with each other are disposed between an inner wall of the housing and an outer wall of the guide sleeve, a spacing between the guide sleeve and the housing located on the guide segment is greater than a spacing between the guide sleeve and the housing located on the press-fit segment.

Abstract: An electronic expansion valve comprises: a valve body, the valve body comprising a main body section, an extension section, and a step section, wherein a valve seat core being in a tubular shape and having openings at two ends, wherein the valve seat core comprises a tubular body and a limiting step formed at one end of the tubular body, the tubular body penetrates through the extension section, the limiting step abuts against the inner wall of the step section, and one end of the tubular body away from the limiting step extends out of the extension section; and an air outlet pipe, which is sleeved in the extension section and abuts against an outer wall of the step section, a groove is defined by an inner wall of the air outlet pipe, the extension section, and an outer wall of the tubular body in a surrounding mode.

Abstract: The present disclosure provides an electronic expansion valve and an air conditioning system using the same. The electronic expansion valve includes a valve body, a valve needle component, and a guide sleeve. The guide sleeve is installed in the valve body and configured to guide a movement of the valve needle component, the valve needle component is arranged on the guide sleeve, the valve needle component includes a valve needle and a screw rod installed in the valve needle, a sealing groove configured to accommodate a sealing ring is provided in an outer side wall of the valve needle, and an oil storage groove is located between the guide sleeve and the valve needle.

Abstract: Some embodiments of the present invention provides an electronic expansion valve, including: a valve body, the valve body having a valve port; a valve head, movably provided in the valve body, the valve head being configured for blocking the valve port; a rod member, the rod member having a first end and a second end opposite to each other, wherein the first end is provided in a cavity of the valve head in a penetrating manner, the second end has a positioning structure, the positioning structure is configured for positioning a circumference of the rod member, the positioning structure is a positioning flat surface, and the positioning flat surface is parallel to an axis of the rod member; a valve sleeve, provided in the cavity of the valve head.

Abstract: Some embodiments of the present disclosure provide an electronic expansion valve, including: a valve body, the valve body having a valve port; a valve head portion, movably provided in the valve body, the valve head portion including a valve head and a pressing sleeve, the valve head having an accommodating cavity, the end of the accommodating cavity close to the valve port having a bottom wall, a through hole being provided on the bottom wall, and the valve head being used for blocking the valve port; a guide sleeve, provided in the valve body, the valve head portion being inserted in the guide sleeve; a driving portion, movably provided in the valve body, an end of the driving portion penetrating the pressing sleeve, and a channel being provided on the end of the driving portion.

Abstract: Disclosed is a magnetic valve, including: a valve body, provided with an installation cavity, a first valve port and a second valve port; a valve core, installed in the installation cavity and provided with a valve opening position and a valve closing position, a second cavity located at an outer periphery of a main body of the valve core and a third cavity located at a second end of the valve core, the first valve port is communicated with the third cavity and the second valve port is communicated with the second cavity; a core iron assembly, including a core iron, herein the valve core is fixedly connected with a first end of the core iron; an attractor, installed in the installation cavity and located at a second end of the core iron; and a balancing channel, extended along an axial direction of the valve core and the core iron.

Abstract: An electronic expansion valve, comprising a valve seat assembly and a valve core assembly. The valve core assembly is disposed in the valve seat assembly The valve seat assembly comprises a valve seat, a valve seat core, and a guide sleeve. The valve seat is provided with a valve cavity, one end of which is open. A through hole is provided on the valve seat core; the end of the conduction portion close to the guide sleeve is circumferentially provided with an inclined surface inclined outwards. The valve core assembly comprises a valve head. The end of the valve head close to the valve seat core is provided with a sealing surface. The valve head is driven to move close to or away from the valve seat core, so as to adjust the gap between the inclined surface and the sealing surface.