33results about How to "Reduce opening size" patented technology

The invention relates to a piloted valve, particularly a piloted proportional throttle valve, having a valve piston (29) displaceably guided in the longitudinal direction in a valve housing (13) having a fluid inlet (2) and outlet (1), the front side (27) whereof can be pressurized against a main valve seat (25) by fluid pressure acting on the back side thereof, having a pilot valve device comprising an actuating member (7) displaceable in the longitudinal direction by means of an electrically actuatable magnet system (4), working together with a pilot valve seat (37) in a bore (17) of the valve piston (29) connecting the back side thereof to the fluid outlet (1) on the front side of the piston, in order to reduce the fluid pressure on the back side of the piston (29) for an opening motion when the pilot valve seat (33) is released, a flow baffle device (39) being disposed between the back side of the piston and the fluid inlet (2) of the housing (13) for building up the fluid pressure pressurizing the piston (29) against the closed position thereof by introducing pilot fluid, characterized in that the flow baffle device (39) comprises a device for performing filtration, preferably gap filtration, of the pilot fluid.

The invention relates to an automatic opening and retracting control device with a safety structure for a multi-folding umbrella. The automatic opening and retracting control device comprises an opening and retracting control device and an umbrella retracting safety device, wherein a ratchet claming piece (85) of the umbrella retracting safety device comprises a clamping block (851), a shift block (852) and reset pieces of the clamping block (851) and the shift block (852), one end of the clamping block (851) is opposite to teeth of a ratchet (82), the other end of the clamping block (851) is opposite to the shift block (852), and the shift block (852) is provided with a convex sheet (855). The resetting piece (854) of the shift block acts on the shift block (852), so as to maintain a trend that the convex sheet (855) on the shift block (852) extends into groove holes which are formed in an umbrella middle rod (20) and the side wall of a control pipe (6). When a billiard descends to an umbrella retracting state, the shift block (852) is pushed outwards, so the clamping block (851) is shifted, and the lower end of the clamping block (851) is tilted and disengaged from the ratchet. The automatic opening and retracting control device has the advantage that only one narrow groove is arranged on the side wall of an inner pipe of the middle rod, so the sufficient strength of the side wall of the inner pipe of the middle rod is ensured, and the force for umbrella retracting and middle rod folding is greatly reduced; and the structure is simple, the fault rate is low, and the easy assembly is realized.

The invention discloses a heat-insulating and anti-cracking vertical barrier material for composite pollutants and a preparation method thereof. The heat-insulating and anti-cracking vertical barrier material is mainly composed of in-situ soil, sodium-modified bentonite, organically modified attapulgite and modified additives. The thermal insulation and anti-cracking vertical barrier material comprises 70-85% of in-situ soil, 8-12% of sodium-modified bentonite, 5%-8% of organically modified attapulgite, and 5%-20% of modified additives. The main components of the modified additive include granulated blast furnace slag powder, activated magnesium oxide, basalt fiber, and nano-zero-valent iron, and the mass ratio is 90:10:10:1~90:30:30:1. The thermal insulation and anti-cracking vertical barrier has the following characteristics: it still maintains a low permeability coefficient against high concentrations of heavy metals and organic compound pollution solutions; it has good chemical compatibility; it provides semi-rigid strength and has a certain toughness to resist cracking; at the same time Provide thermal insulation function; the main materials are all green and resource recycling materials.

The invention relates to a rapier clamp for weaving carbon fiber expanded flat yarns. The rapier clamp comprises a movable upper jaw (1), a stationary lower jaw (2), a rotary shaft (3), a compressionspring (4), a control device (5) and weft yarns (8) ), wherein the movable upper jaw (1) is hinged to the stationary lower jaw (2) by the rotary shaft (3), the movable upper jaw (1) can be rotated around the rotary shaft (3), the compression spring (4) is arranged between the movable upper jaw (1) and the tail end of the stationary lower jaw (2), the control device (5) is arranged in the upper part of the tail end of the movable upper jaw (1) for driving the movable upper jaw (1) to rotate, opening the movable upper jaw (1) and introducing the weft yarns (8). According to the rapier clamp, theinternal structure of the clamp is simplified, so that the size of the clamp is reduced as much as possible, the size of an opening is reduced, the degree of damage to the carbon fiber is reduced, and the production efficiency of a loom is improved.

The invention relates to an intelligentize multifunctional plant protection robot four-wheel antiskid mechanism comprising a microcontroller, back and forth wheel speedtransmitters, solenoid valves and an oil cylinder; the microcontroller is the main controller; the speedtransmitter is the main detection input device; the solenoid valves are controlled objects; the hydraulic cylinder is the main execution mechanism; the back and forth wheel speedtransmitter is used for detecting wheel states; the microcontroller can compare rotating speed of each wheel so as to determine whether the wheel is in idle running or not; if yes, the microcontroller can reduce a solenoid valve opening of the corresponding wheel or cut off the solenoid valve, thus reducing fuel quantity, reducing hydraulic cylinder output , and preventing skid phenomenon.

This application relates to a light-emitting chip production equipment and its production process, which includes a body, the upper surface of the body is hinged with a number of interconnected covers, all the covers are connected to form a closed cavity, and a number of heating plates are fixed on the inner top wall of the cover. The bottom of the inner cavity of the machine cover is provided with a transmission mechanism for assisting the travel of the board, and one end of the body is provided with a through hole for the board and the light strip after the soldering process to enter and pass through, and both ends of the body in the length direction are fixed with Lifting device, the top of the lifting device is fixedly connected with the material receiving plate, and the material receiving plate is rotatably connected with the material receiving roller, the rotation axis of the material receiving roller is perpendicular to the traveling direction of the plate, and the lower surface of the plate is in contact with the top of the material receiving roller. The material plate is provided with a positioning assembly for adjusting the position of the screw material perpendicular to its traveling direction. The height of the through hole is not lower than the rising height of the plate. This application has the effect of improving the efficiency of solder drying.

The invention discloses a pipe fitting, which comprises a pipe fitting main body composed of more than one section of pipe body and more than one expansion joint. An expansion joint is installed between them, and the pipes on both sides are connected through the expansion joint. The total length of the entire pipe body is longer than the length of the embedded cavity, and the expansion joint of the entire pipe body is squeezed and buried in the embedded cavity. Inside and through the pre-embedded cavity to limit both sides, the extruded expansion connector protrudes outward and forms a support ring to contact and support the bottom surface of the pre-embedded cavity. The pipe fitting of the present invention has very good resistance to compression and shearing. Even if the pipe fitting is cut into two as a whole, it can slowly restore the deformation of the pipe fitting, reduce the water output, and further reduce the loss of water source.

The invention discloses a feeding and sampling analyzer for an industrial analyzer, comprising a crucible supporting assembly and a crucible clamping assembly, wherein the crucible supporting assembly comprises a crucible supporting shaft as well as a lifting motion driving assembly and a horizontal motion driving assembly which are positioned at the bottom of the crucible supporting shaft; and the crucible clamping assembly comprises a crucible clamp, a crucible clamp supporting shaft and a rotating assembly by which the crucible clamp supporting shaft rotates by taking the crucible supporting shaft as a rotating center. The invention has the advantages of simple and compact structure, low cost, convenience of assembly, performance improvement of the entire machine and the like.

The invention relates to the technical field of intelligent locks, in particular to an intelligent lock capable of being installed in a quick left-and right reversing way. The intelligent lock comprises a lock shell, a spring bolt baffle plate, a latch bolt, an engaging and disengaging assembly and an engaging and disengaging drive device. When a connecting end of the latch bolt moves to a telescopic port, the lock can be rotated freely; when a locking end and a limiting section of the latch bolt move to the telescopic port, the lock cannot be rotated; an ejector plate assembly comprises an ejector plate elastic piece and a latch bolt ejector plate; the other end penetrates through a rotary hole formed in a latch bolt pulling point part of the engaging and disengaging assembly; and a fastening end of the latch bolt ejector plate can be separably ejected on a side face of one side, close to the latch bolt pulling point, of a clamping baffle plate. According to the intelligent lock, a quick reversing mechanism is compact in structure, and an opening size of the telescopic port can be reduced as much as possible, so that the lock shell of a lock body cannot be deformed easily; a torsion spring is adopted to press the ejector plate; the latch bolt ejector plate is ejected to the rear end of the latch bolt, so that an action force is smaller, the service life is longer, and a reversing process of the latch bolt is simpler and more convenient to operate; and the intelligent lock can quickly realizes installation and left and right doors.

The application relates to a lighting device that is convenient for adjusting the illumination range, and relates to the field of lamps, which includes a lampshade, a light bulb fixedly connected to the lampshade, an inner gear rotatably connected to the lampshade, and a mounting seat fixedly connected to the lampshade , a gear set on the mounting seat, the gear set includes a first gear rotatably connected to the mounting seat and a second gear rotatably connected to the mounting seat, the number of gear sets is two, and the two gear sets are about the inner teeth The axis of the ring is symmetrical in the center, the first gear and the second gear are fixedly connected with an adjusting rod, the adjusting rod is provided with a first light shield, the first gear meshes with the inner gear ring, the first gear meshes with the second gear, and the first gear meshes with the second gear. The second gear is not meshed with the inner gear, one end of the first shading sheet is fixedly connected to the inner wall of the lampshade, the other end is fixedly connected to the adjusting rod, and the first shading sheet is folded and arranged. The present application has the effect of adjusting the illumination range of the lamp.