58results about How to "Act as pressure" patented technology

The invention relates to a preparation method of thermal insulation microsphere filler with high emissivity and ablation resistance. The preparation method of the thermal insulation microsphere fillerwith high emissivity and ablation resistance comprises the steps as follows: preparation and mixing of powder, preparation of precursor slurry, preparation of precursor powder, sintering and the like. Compared with the prior art, the preparation method has the advantages that the production efficiency is high, the production period is short, equipment is simple, operation is convenient, preparedspray powder has better degree of sphericity and special pore structures, and a coating prepared from microspheres as filler has low mass ablation rate, high self-radiance and good mechanical properties and can effectively resist heat flow impact of 800 kW / m<2> or above and protect matrixes from deformation and failure due to high temperature erosion.

The invention discloses a nut sheller. The nut sheller comprises a shell, a first pressure applying part and a second pressure applying part, wherein the shell comprises an upper shell body and a lower shell body which are detachably connected and are communicated with each other vertically, and the inner walls of two opposite side faces in the width direction of the upper shell body are provided with strip-shaped blocking blocks for dividing the upper shell body into a first space and a second space; the first pressure applying part is arranged in the first space, and comprises a fixing shell and a screw, the screw is in threaded connection with one side surface of the upper shell body, a first rotation handle is arranged on the head part of the screw, a lock nut is arranged on the rod part of the screw, and a plurality of serrated first bumps are arranged on the inner wall of the fixing shell; the second pressure applying part is arranged in the second space, and is an elliptic cylinder horizontally arranged, two opposite nut grooves are arranged on the side surface of the second pressure applying part, and the middle part of the second pressure applying part is fixedly connected with the middle part of a rotation shaft. The nut sheller has the advantages of being simple in structure and convenient to operate, and being safe and sanitary, and relatively complete nut kernels can be obtained.

The invention discloses a rod body piston resistance-increase yielding anchor rod and a construction method. The problem is solved that a resistance-increase structure of an anchor rod is easily blocked. By arranging a sleeve outside an anchor rod body and changing the thickness of the wall of the sleeve, the thickness of the wall of the sleeve gradually changes, and accordingly a yielding effectis realized. In the technical scheme, the anchor rod comprises the sleeve, the sleeve is of a hollow structure, and sleeves the rod body, the end, serving as an anchoring segment, of the rod body extends into the tail end of the sleeve and is connected with a resistance-increase structure, and the other end of the rod body extends to the outer side of the head end of the sleeve and is connected with an anchor head. The thickness of the wall of the part, corresponding to the anchoring segment of the rod body, of the sleeve is gradually decreased from head end to tail end, and when the anchor rod gradually pushes a soil body forwards, the wall of the sleeve deforms and is lengthened to realize yielding.

The invention relates to a supporting steel frame for a weak surrounding rock tunnel. The supporting steel frame for the weak surrounding rock tunnel comprises a lining layer, a concrete spraying layer, an initial supporting layer, anchor rods, a supporting rigid frame, a drainage system and a top connecting steel base operating platform vehicle; the initial supporting layer is located in the outermost layer of the tunnel, the concrete spraying layer is arranged on the inner side of the initial supporting layer, and the lining layers arranged on the inner side of the concrete spraying layer; the supporting rigid frame is arranged on the inner side of the lining layer, the anchor rods penetrates into the surrounding rock of the initial supporting layer, and the inner ends of the anchor rodsare connected with the supporting rigid frame; the drainage system is arranged on the ground of the tunnel, and the drainage system comprises a reserved drainage, drainage channels and drainers. Thesupporting steel frame for the weak surrounding rock tunnel has the beneficial effects that a anchor structure is provided with an own monitor, the stability of the overall structure can be monitoredin time, and timely warning can be achieved before the accident, so that the construction of the pressure-receding anchor structure is convenient, and the structure is simple; and other excessive structures for playing the role of pressure-receding are not required, and good economic and technical benefits are achieved.

The invention discloses a fertilizer granule intermittent compression type grinding device for agriculture. The fertilizer granule intermittent compression type grinding device comprises a base, a first driving motor, a cylinder body, a grinding rotating tube, a grinding head and a second driving motor, wherein the cylinder body is arranged under a moving rod A; a piston is glidingly arranged inside the cylinder body; the moving rod A is fixedly welded at the upper surface of the piston; a rolling wheel is rotationally arranged at the upper end of the moving rod A; a moving rod B is fixedly welded at the lower side of the piston; a connecting plate is arranged at the lower end of the moving rod B; a grinding shaft is arranged on the lower surface of the connecting plate through screw threads; the grinding head is fixedly arranged at the lower end of the grinding shaft. During the grinding, the grinding head at the lower end of the grinding shaft vertically moves; a pressurization effect is achieved; the grinding intensity is improved; the grinding effect is greatly improved, so that the fertilizer granule is more exquisite; the fertilizer dissolution is facilitated; the grinding rotating tube intermittently performs positive rotation and reverse rotation; compared with that of the single-direction rotation, the grinding effect is better; the condition of incomplete grinding iseffectively avoided.

The invention discloses an assembled green thermal-insulation quakeproof wall and a preparation method thereof. The quakeproof wall comprises a surrounding plate and reinforcing columns, middles of side walls of the surrounding plate are provided with trapezoidal grooves, openings of the trapezoidal grooves are gradually increased from inside to outside, and pressure supporting frames are in clamped connection in the trapezoidal grooves and fit the trapezoidal grooves. The surrounding plate is internally in a hollow structure, upper and lower end faces of the surrounding plate are provided with panels, and wall panels are arranged outside the panels. The reinforcing columns are hollow quadrangular sections, one side of each reinforcing column is connectedly clamped in an inner concave partof the corresponding pressure supporting frame, and melt adhesives are filled between lateral sides of the reinforcing columns and the pressure supporting frames. The assembled green thermal-insulation quakeproof wall has advantages that the lateral sides of the surrounding plate are provided with the trapezoidal grooves gradually narrowed from outside to inside, convenience in mounting and demounting is achieved, and efficiency in mounting and demounting is improved; by arrangement of the pressure supporting frames, a bearing effect can be achieved, the integral service life is prolonged, and firmness in mounting is improved; by arrangement of a foam board, heat insulation and preservation functions are achieved.

The invention discloses a carbon sequestration and supplementation reactor for gas circulation type microalgae cultivation. The carbon sequestration and supplementation reactor comprises a shell, an inner sleeve, a liquid inlet pipe, a gas inlet pipe, a fixed support and a gas circulation pipeline. The fixing support is installed in the shell, and the bottom end of the fixing support communicateswith the bottom end in the shell. The inner sleeve is fixed at the top end of the fixing support, the inlet end of the liquid inlet pipe extends out of the shell, and the outlet end extends into the inner sleeve; one end of the air inlet pipe communicates with the bottom of the inner sleeve, and the other end communicates with an air supply device; one end of the gas circulation pipeline is communicated with the top end of the shell, and the other end is communicated with the gas supply device. The carbon sequestration and supplementation reactor also comprises a liquid outlet pipeline which is communicated with the bottom end of the shell. According to the carbon sequestration and supplementation reactor, the CO2 is fully dissolved in the liquid, and the carbon sequestration and supplement efficiency is improved.

The invention provides a bone-setting pin-board system, which comprises a first fixing part (1) and a second fixing part (2), wherein the first fixing part (1) and the second fixing part (2) are integrally formed, fixedly connected or detachably connected; the first fixing part (1) comprises a main bone plate (101), and the main bone plate (101) is fixedly connected with a main nail (102) ; the second fixing part (2) comprises one or more branch bone plates (201), and the bone plate (201) is fixedly connected with a sub-nail (202) ; a plurality of bone plates (201) form an included angle or are parallel to each other in the length extension direction; a barbed structure (400) is arranged on the main nail (102) and / or the sub-nail (202). According to the invention, the Y-shaped nail designis adopted, the angle is fixed, the fixed strength is larger, and the axial stability is higher; a barbed structure is adopted on the main nail and the sub-nail, the knocking implantation is convenient, and the anti-pulling force of the nails after being implanted is higher; the bone damage to the metaphyseal end of a child is small, the amount of bone is reduced, and the interference of the inner-implanted object to the healing and development of the metaphyseal end is reduced.

The invention belongs to the field of mechanical engineering sealing, and discloses a novel multi-stage magnetic liquid sealing device. The novel multi-stage magnetic liquid sealing device successfully solves the problem that an existing sealing mode can not avoid mutual dissolution or mutual contamination between magnetic liquid and a liquid medium to be sealed. The device comprises a first-stage seal and a second-stage seal, wherein the first-stage seal is formed by a static ring (4), a pressure control valve (5), a movable ring (6), a spring (7), a spring base (8) and a set screw (9), and the second-stage seal is formed by a left pole shoe (10), a permanent magnet (11) and a right pole shoe (12). The first-stage seal is mainly used for sealing a liquid medium to be sealed in a seal cavity and preventing the liquid medium to be sealed from making contact with magnetic liquid (22), the second-stage seal is mainly used for sealing gas charged into a cavity between the movable ring (6) and the left pole shoe (10), and even when a shaft (21) does not rotate, the novel multi-stage magnetic liquid sealing device can reliably seal the liquid medium to be sealed.

The invention relates to a supporting steel frame of a tunnel with weak surrounding rock, including a lining layer, a concrete sprayed layer, an initial supporting layer, an anchor rod, a supporting rigid frame, a drainage system and a top connection steel seat operating platform vehicle; the initial supporting layer is located in the tunnel The outermost layer, the inner side of the primary support layer is the concrete sprayed layer, and the inner side of the concrete sprayed layer is the lining layer; The rigid frames are connected; the drainage system is set on the tunnel ground, and the drainage system includes reserved drainage grooves, drainage grooves and drainers. The beneficial effects of the present invention are: the bolt structure of the present invention has its own monitoring instrument, which can monitor the stability of the overall structure in time, and can provide timely early warning before accidents, so that the construction of the anchor bolt structure is convenient and the structure is simple. There is no need for other excessive structures to play the role of giving way, and it has good economic and technical benefits.

The invention relates to the technical field of equipment maintenance, and discloses a platform surface cleaning mechanism. The platform surface cleaning mechanism comprises a main frame, a cleaning assembly, a dust collection assembly, a connecting assembly and a driving assembly, wherein the cleaning assembly comprises a cleaning roller; a viscous layer used for cleaning a platform is arranged on the roller surface of the cleaning roller; the dust collection assembly comprises a dust collection roller; a viscous layer used for cleaning the cleaning roller is arranged on the roller surface ofthe dust collection roller; the connecting assembly comprises an elastic part; the cleaning assembly is connected with the dust collection assembly through the elastic part; the driving assembly comprises a driver; and the driver is arranged on the main frame, and can drive the dust collection roller to be in rolling contact with the cleaning roller. According to the platform surface cleaning mechanism, the dust collection roller can be in rolling contact with the cleaning roller, the cleaning roller can be in rolling contact with the platform, dust on the platform can be stuck by the dust collection roller after being stuck by the cleaning roller, and dust cleaned by the cleaning roller is transferred onto the dust collection roller; and the viscous layer on the dust collection roller ismanually changed regularly to keep the surface of the cleaning roller clean, the cleaning roller can continuously clean dust on the platform, and the surface of the platform is not liable to scratch.

The invention discloses a fireproof roller shutter security door with a fire extinguishing mechanism, and relates to the technical field of fireproof roller shutter security doors with fire extinguishing mechanisms. The fireproof roller shutter security door comprises a box body structure, a pressurization structure, a spraying fire extinguishing structure, an alarm structure, a maintenance structure, a rotating structure, a door curtain structure and an anti-theft structure, a bolt is arranged at one end of a box door, a mounting notch is formed in the surface of one side of a shell, the bolt is connected with the mounting notch, the lower surface of a water tank is connected with the lower surface in the shell, and an inner pipe is mounted on the inner surface of an outer pipe; and one end of a spraying opening is connected with the outer surface of the outer pipe, one side surface of a temperature sensor and one side surface of an alarm are connected with one side surface of a frame body, one side surface of a fixing groove box is connected with one side surface of the frame body, and the lower surfaces of two U-shaped sliding grooves are connected with the upper surface of the fixing groove box. According to the fireproof roller shutter security door with the fire extinguishing mechanism, a water pump and the spraying opening are arranged, the water pump plays a role in pressurization, liquid water is pressurized through the water pump and flows out of the spraying opening to form a water curtain door, and fire can be extinguished efficiently and rapidly.

The invention provides a locking compression nail plate system for setting a bone. The system comprises a first fixing part (1) and a second fixing part (2). The first fixing part (1) and the second fixing part (2) are integrally formed and fixedly connected or detachably connected; the first fixing part (1) comprises a main bone plate (101), and a main rod locking hole (110) is formed in the mainbone plate (101); the second fixing part (2) comprises multiple branch bone plates (201), and auxiliary nails (202) are tightly fixed to the branch bone plates (201); the branch bone plates (201) include wavy parts (203). A Y-shaped nail plate design is adopted, a bone block is fixed at an angle after the system is implanted, the fixation strength is higher, and the axial stability of bone fractures is higher; a main nail and the auxiliary nails are of inverse thorn structures, the system is implanted by knocking, implantation is convenient, and a pull-out resistant force is higher; the inverse thorn-liked nails have less damage to metaphysis sclerotin of children, less bone amount is needed, and interference of internal implants on healing and development of metaphyseal bone fractures isreduced. By bending the wavy parts, the effect of pressurization can also be achieved to prevent formation of bone fracture gaps.

Disclosed are a lateral electrode assembly of a petroleum well logging instrument and a manufacturing method thereof. The lateral electrode assembly includes a support body, an insulating layer, a fiber-reinforced resin layer, one or more wires, and a ring electrode. The side electrode assembly does not require oil injection and a pressure balance device, which simplifies the structure of the electrode assembly and reduces maintenance work.

The invention relates to a preparation method of a high-emissivity ablation-resistant and heat-insulating microsphere filler, which includes the steps of powder preparation and mixing, precursor slurry preparation, precursor powder preparation, and sintering process. Ablation of insulating microsphere fillers. Compared with the prior art, the present invention has high production efficiency, short production period, simple equipment and simple operation, and the prepared spray powder has good sphericity and special pore structure, and the coating prepared by using the microspheres as filler has the advantages of Low mass ablation rate, high self-radiation rate, good mechanical properties, can effectively resist 800kW / m 2 And the heat flow impact above, protect the matrix from high temperature erosion and deformation and failure.

The invention discloses a lined packing box. The lined packing box comprises a honeycomb type liner, at least one cavity communicating the top with the bottom is arranged in the honeycomb liner, a cover plate is arranged above the honeycomb liner, and a bottom plate is arranged below the honeycomb liner. Surrounding plates are arranged on the outer periphery of the honeycomb liner. Cover plate protrusion blocks are arranged at the lower end of the cover plate, surrounding plate grooves corresponding to the cover plate protrusion blocks are arranged at the upper ends of the surrounding plates, bottom plate grooves are arranged at the upper end of the bottom plate, and surrounding plate protrusion blocks corresponding to the bottom plate grooves are arranged at the lower ends of the surrounding plates. Cover plate grooves corresponding to the cover plate protrusion blocks are arranged at the upper end of the cover plate, and bottom plate protrusion blocks corresponding to the bottom plate grooves are arranged at the lower end of the bottom plate.

The present application relates to the field of medical screws, in particular to a double-threaded hollow screw with anti-rotation and anti-return, comprising a screw body with a hollow interior and openings at both ends, the screw body comprising a cylindrical rod body and a nail tail integrally formed at one end of the cylindrical rod body The outer wall of the cylindrical rod body close to the end of the nail tail is processed with a tail external thread, and the outer wall of the cylindrical rod body away from the nail tail is processed with a head multi-thread thread, and the lead of the tail external thread is greater than or smaller than that of the head multi-thread thread . The arrangement of the external thread at the tail and the multi-thread thread at the head in this application makes the double-threaded hollow nail form a displacement difference when it is screwed into the bone, so as to exert pressure and anti-pull, and reduce the implantation of the double-threaded hollow nail. The possibility of screw withdrawal and rotation occurs later; at the same time, by arranging a solid rod inner core in the screw body, the strength of the hollow screw is greatly improved.

The invention discloses a spacing pressing mechanism which comprises a pressing block and a support plate connected with the pressing block, wherein the arrangement of the pressing block and the support plate takes an L shape; the pressing block and the support plate adopt an integral structure; a penetration hole is formed in the pressing block; a first compression leg is inserted in the penetration hole; a first buckle cap is arranged at the end part of the first compression leg; a first catching groove is formed in the outer peripheral surface in the joint of the first buckle cap and the first compression leg; an insertion hole is formed in the support plate; a force transmission shaft is inserted in the insertion hole; a first fastener is arranged at one end of the force transmission shaft; a second fastener is arranged at the other end of the force transmission shaft; the first fastener is bucked in the first catching groove; the other end of the force transmission shaft is connected with a second compression leg; a second buckle cap is arranged at the end part of the second compression leg; a second catching groove is formed in the outer peripheral surface in the joint of the second buckle cap and the second compression leg; the second fastener is bucked in the second catching groove. According to the spacing pressing mechanism, the pressing effect can be achieved, the plane can be pressed by the pressing block, the point can be pressed by the first compression leg, the water-proof rubber and the like can be flattened and the air tightness is better.