481 results about "Open hole" patented technology

The invention discloses an earth surface directional drilling high-pressure deep hole grouting construction method based on steel sleeve hole fixing. The earth surface directional drilling high-pressure deep hole grouting construction method comprises the following steps that firstly, a directional drilling machine is used for vertically drilling a grouting hole downwards; secondly, a plurality of steel floral tubes are sequentially put down in the three-opening first branch grouting hole; thirdly, cement-bentonite-based sleeve shell materials are continuously injected into the first section of the steel floral tube to the inner bottom of a first branch grouting hole of the three-opening hole, and an annular space between the first branch grouting hole of the three-opening hole and the steel floral tube string is filled with the cement-bentonite-based sleeve shell materials; fourthly, a packer is lowered to the bottom of the three-opening first branch grouting hole; a packing section is formed in front of the packer; and fifthly, cement grout is injected into the grouting pipe, grouting is conducted on the packing section, the finally-set cement-bentonite-based casing material is split and damaged under the effect of grouting pressure, and the grouting grout is injected into the stratum to be reinforced through the grout channel. According to the method, the hole collapse phenomenon when the grouting hole penetrates through the unfavorable geological section can be prevented, the grouting stopping effect of the packer is guaranteed, and retreating type segmented grouting construction is guaranteed.

The invention relates to the technical field of turbine shaft machining, and discloses a turbocharger turbine shaft machining device which comprises a machining bin and further comprises a visual door plate installed at an open hole formed in the front face of the machining bin and used for opening and closing the visual door plate and taking and placing the turbine shaft. The machining table is fixedly connected to the interior of the machining bin and used for machining the turbine shaft; the clamping mechanism is arranged above the machining table and used for clamping the turbine shaft; and the moving mechanism is arranged above the processing table. By arranging the clamping mechanism and adopting the scheme that a conical groove pushes a plurality of sets of push rods and clamping blocks to synchronously and radially move, high-precision automatic centering of the turbine shaft is achieved, it is guaranteed that the rotation center of a workpiece and the machining center strictly coincide, the machining roundness is guaranteed from the source, meanwhile, a first spring provides uniform clamping force, and the machining precision is improved. And deformation or surface damage of the thin-wall part possibly caused by a traditional rigid clamp is avoided, and rigid-flexible precise clamping is achieved.

The invention relates to the technical field of open hole packers, and discloses a large-reaming-rate rubber sleeve which comprises a central pipe and further comprises a rubber sleeve body, a first sleeve and a second sleeve, and the rubber sleeve body is of a single integrated structure and arranged on the outer side of the central pipe in a sleeving mode; the two shroud rings are respectively fixed at the axial interval positions of the outer surface of the rubber sleeve, and the two shroud rings form a restraining and separating effect on the rubber sleeve, so that the rubber sleeve forms continuously distributed sealing bulges in the three sealing sections in the setting process; the back ring is arranged at the axial end of the rubber sleeve and matched with the rubber sleeve, a plurality of gap holes are distributed in the surface of the back ring, and the back ring synchronously and radially expands along with the rubber sleeve in the setting process and is adaptively attached to the open hole well wall through deformation of the gap holes, so that a stable supporting face is constructed for the rubber sleeve. The rubber sleeve with the large reaming rate aims at solving the problems that in the prior art, under the large reaming well condition, a rubber sleeve is insufficient in sealing capacity, lacks multiple sealing structures and is prone to being damaged in the tripping-in process.

The invention provides a preparation method of a 3D printing composite material, which comprises the following steps: S10, providing a 3D printing skeleton which is printed by adopting a first thermoplastic material and has a three-dimensional communicated open pore structure, and reserving a layer grain structure formed in the printing process on the surface of the 3D printing skeleton; s20, the 3D printing framework is placed in a constant-temperature environment of 70-90 DEG C and kept dry; s30, the heated 3D printing framework is moved into a cavity of an injection mold, the mold is closed, and the temperature of the cavity of the injection mold is set to be 30-60 DEG C; s40, a molten second thermoplastic material is injected into the cavity, so that the second thermoplastic material wraps the 3D printing framework and fills the groove of the layer grain structure; the shore hardness of the second thermoplastic material is lower than that of the first thermoplastic material, and the softening temperature of the first thermoplastic material is higher than the melt injection temperature of the second thermoplastic material. According to the 3D printing composite material prepared by the preparation method, the problem that the comfort degree of an existing 3D printing insole is relatively low can be solved.

The invention relates to the technical field of oil and gas well completion tools, and discloses an anti-resistance open hole packer which comprises a central pipe and a rubber sleeve arranged outside the central pipe in a sleeving mode, and further comprises a double-piston setting mechanism arranged on the central pipe in a sleeving mode and defining a pressure-bearing cavity, one end of the double-piston setting mechanism abuts against the end of the rubber sleeve, and the other end of the double-piston setting mechanism abuts against the end of the rubber sleeve. Axial thrust is generated by receiving high-pressure liquid conducted in the center pipe, and the rubber barrel is extruded to deform in the radial direction and be attached to the open hole well wall. And the lower piston assembly is arranged in a pressure-bearing cavity between the central pipe and the double-piston setting mechanism, firstly moves in the direction far away from the rubber barrel under the action of high-pressure liquid, relieves the pre-locking state of the double-piston setting mechanism and then drives the double-piston setting mechanism to move in the direction of the rubber barrel. The open hole packer capable of preventing resistance encountering aims at solving the problems that a setting mechanism is started in advance and set accidentally due to resistance encountering in the process that an existing open hole packer goes into a well, and the existing open hole packer cannot reach a preset packing position accurately.

The invention relates to the technical field of underground measurement-while-drilling data transmission, in particular to an electromagnetic wave mode-while-drilling conversion relay transmission method and system. The method comprises the following steps: acquiring measurement data and transmitting a signal through a double-insulation controlled dipole transmitting structure; receiving the measurement data signal through a repeater arranged along the drill string; determining an equivalent emission impedance characteristic by outputting a detection signal to an external medium and collecting an output end voltage and a current effective value; receiving a propagable guidance response formed by the measurement data signal; judging the type of the current well section based on the equivalent emission impedance characteristic and the propagable guide response; switching to a casing guide injection path or an open hole coupling injection path is selected according to the type of the well section; and carrying out relay forwarding on the signal based on the corresponding emission parameter group. Intelligent identification and conversion of signal modes are achieved, the relay transmission success rate and stability of cased well measurement data signals are improved, the link building distance is shortened, and power consumption and risks caused by working condition uncertainty are reduced.

The invention discloses a Helmholtz coil material lightning magnetic field shielding performance measuring device, which comprises a magnetic field generation device, a shielding test box is arranged in a magnetic field coverage range of the magnetic field generation device, an open hole is formed in the shielding test box, and the open hole enables a magnetic line of force of the magnetic field generation device to transversely penetrate through the shielding test box. The shielding test box is internally provided with the signal measurement unit, the signal measurement unit measures the magnetic field in the shielding test box, the lightning stroke magnetic field environment is accurately simulated, and the repeatability and accuracy of the shielding performance test are improved. The invention further discloses a method for measuring the lightning magnetic field shielding performance of the Helmholtz coil material, the lightning magnetic field shielding performance of the measured shielding material is measured by applying the device for measuring the lightning magnetic field shielding performance of the Helmholtz coil material, and the problem that traditional measurement is poor in accuracy is effectively solved.

The utility model provides a wafer bearing structure and an etching device used for the sconi etching process, the wafer bearing structure comprises a pedestal, a top disc and a thimble, the top disc is stacked on the pedestal, the pedestal is provided with a plurality of first open holes close to the edge, the top disc is provided with a plurality of second open holes close to the edge, the first open holes and the second open holes are coaxially arranged, and the thimble is arranged on the pedestal. The ejector pin can move in the axial direction of the first open hole and the second open hole so as to enable a wafer located on the ejector disc to ascend or descend, and the upper side, corresponding to the first open hole, of the base is provided with a first heating element, and when the wafer bearing structure is applied to the sconi etching process, the first heating element is arranged on the upper side, corresponding to the first open hole, of the base; the wafer is located on the top tray, and the first heating element can perform temperature compensation on the second opening area of the top tray, so that the etching reaction rate of the wafer is improved, the etching thickness difference between the center of the wafer and the corresponding second opening area of the top tray is balanced, and the uniformity of a sconi etching process is improved.

The utility model discloses a road construction fast-assembly type vibration flattening device in the technical field of road construction equipment, which comprises a connecting rod vibration mechanism and a supporting flat plate, a first supporting plate and a second supporting plate are fixedly mounted at the upper end of the supporting flat plate, and the second supporting plate is positioned on the outer side of the first supporting plate. A transmission shaft is movably and fixedly installed between the first supporting plate and the second supporting plate, open holes are formed in the connecting positions of the first supporting plate and the transmission shaft and the connecting positions of the second supporting plate and the transmission shaft, and a first variable-speed large gear, a fixed gear and a second variable-speed large gear are installed on one side of the transmission shaft. The variable-speed large gear and the fixed gear are combined through the sliding gear ring, the effect of adjusting the rotating speed of the transmission shaft is achieved, the eccentric shaft is connected through the gear-shaped hole in the side end of the transmission shaft, the vibration amplitude of the vibration plate can be increased through rotation of the eccentric block of the eccentric shaft, and the adjusting effect of the movement angle is enhanced. The vibration plate is more tightly attached to a construction road, and the vibration plate can adapt to various construction environments conveniently.

The utility model belongs to the technical field of machine tool machining, and particularly relates to a machine tool machining precision real-time monitoring device which comprises a laser interferometer body. A sleeve is arranged on the side wall of the laser interferometer body; an opening is formed in the side wall of the sleeve; the side wall of the opening is fixedly connected with a transparent plate; when external airflow blows air to the laser interferometer body, part of airflow passes through the plurality of vent holes to enter the sleeve, so that the airflow is uniformly distributed, the airflow is guided by the inclined surface of the guide plate, and then the airflow is exhausted to the outside through the air outlet holes after passing through the arc-shaped plate. According to the laser interferometer body, air entering the sleeve can flow uniformly and stably, disturbance of the air flow to laser is reduced, the precision of the laser interferometer body during workpiece monitoring is improved, and the using effect of the laser interferometer body is improved.

The utility model belongs to the technical field of medical instruments, and particularly relates to an electric heating leg sleeve for lithotomy position surgery, which comprises a first electric heating leg sleeve and a second electric heating leg sleeve, the bottom end of the first electric heating leg sleeve is connected with a first leg support in a bonding manner, and the bottom end of the second electric heating leg sleeve is connected with a second leg support in a bonding manner; a rotating shaft is fixedly connected between the bottom of the front end of the first leg support and the bottom of the rear end of the second leg support, a support is fixedly connected to the front end of the bottom of the first leg support, a supporting sleeve is fixedly connected to the rear end of the bottom of the second leg support, a plurality of limiting through holes are formed in the support, and an open hole is formed in the bottom of the rear end of the supporting sleeve. According to the leg support, the first leg support with the support and the second leg support with the limiting shaft are additionally arranged, so that the legs can be further positioned and supported in an auxiliary mode, and the leg support is simple, convenient to use and better in use.

The invention relates to the technical field of municipal engineering, in particular to a construction method for quickly forming a small-caliber hole in a reinforced concrete retaining structure based on a pipe jacking method, which comprises the steps of processing a steel water tank, combining and processing a reinforcement cage and the steel water tank, installing the reinforcement cage, installing a guide pipe, filling pile body concrete, digging the hole after excavation, constructing and reinforcing a ring beam and the like. According to the construction method, by optimizing the pile foundation construction technology and adopting the mode that the steel water tank and the reinforcement cage are combined and poured on site, the hole opening difficulty is greatly reduced, the pile chiseling time is greatly shortened, instability caused by disturbance of a pile body is effectively prevented, the overall stability of an enclosure structure is ensured, and the construction efficiency and safety are improved; and the device is effectively suitable for various municipal engineering small-caliber pipe jacking method construction.

The utility model relates to a dust-free drag chain, which belongs to the technical field of dust-free drag chains and comprises a drag chain body, double rows of composite locking buckles mounted at two ends of the drag chain body and fixing mechanisms mounted at two ends of the drag chain body. A first open hole is formed between the middle parts of the first zipper belt and the second zipper belt; according to the utility model, through the arrangement of the clamping blocks and the clamping grooves in the double-row composite locking buckles, the two ends of the dust-free drag chain can be conveniently and rapidly opened to place a cable with a connector terminal into the open hole, so that wiring can be rapidly realized, the connector terminal does not need to be disassembled and assembled back and forth, and the rotating rod can be driven to rotate by rotating the adjusting screw, so that wiring is more convenient. And after rotation, the rotating rod is screwed into the U-shaped buckle to fully fix the two ends of the dust-free drag chain, so that the two ends of the drag chain cannot be broken along with movement.

This application provides a heater and a single-crystal furnace. The heater includes: a heating element; a foot plate, at least partially disposed opposite to the heating element along a first direction; and a connecting assembly, the connecting assembly including two connectors, one connector connected to the side of the heating element away from the foot plate, and the other connector connected to the side of the foot plate away from the heating element. The two connectors are detachably connected to clamp the heating element and the foot plate. Because the two connectors are detachably connected, allowing indirect connection between the heating element and the foot plate, bolt holes are not required for the heating element and the foot plate, avoiding cracking problems caused by opening holes. Simultaneously, when repairing or replacing the heating element or the foot plate, structural damage caused by direct disassembly of the heating element and the foot plate is avoided, allowing the heating element and the foot plate to be replaced individually, improving the utilization rate of the heating element or the foot plate, and reducing subsequent maintenance costs.

The utility model relates to the technical field of wire box pre-embedding, and discloses a wire box pre-embedding combination device for an aluminum mold system, which comprises a pre-embedded wire box, a square frame is fixedly connected to the top of the outer wall of the pre-embedded wire box, threaded holes are formed in the four corners of the top of the square frame, a square aluminum mold is attached to the top of the square frame, and the top of the square aluminum mold is fixedly connected with the pre-embedded wire box. And aluminum mold open holes are formed in the four corners of the top of the square aluminum mold, screws are in threaded connection with the inner sides of the aluminum mold open holes, and the bottom ends of the outer walls of the screws are in threaded connection with the inner sides of the threaded holes. According to the utility model, the outer wall of the pre-embedded wire box is provided with the preset knock-off hole and the sealing ring, the square aluminum mold is matched to be attached to the surface of the pre-embedded wire box, and the pre-embedded wire box is tightly fixed on the pre-embedded wire box through the hole and the screw at the corresponding position of the pre-embedded wire box fixing structure assembly. The phenomenon that the pre-embedded wire box shifts and even deforms and falls off in the subsequent concrete pouring process is avoided, and the pre-embedding precision of the wire box is greatly improved.

The present application relates to a kind of porous metal materials.The cavity wall of the hole surrounded by is connected open hole, and the cavity wall is axial hollow structure, and the cavity wall has hole in radial direction, and the porosity of the porous metal material is uniformly distributed or gradient distribution, and the gradient distribution can be gradient change along one direction, or it can be three-dimensional gradient change, and the cavity wall radial hole is single-stage hole.The porous metal material of the present application has good mechanical properties, high three-dimensional pore connectivity, and good transfer performance.

Capsule made of aluminum, suited to seal small tubes with open hole by using a capsule made of the same metallic material as the tube, the capsule being useful in the recycling of its materials after their end use; the capsule including: a cylindrical body made of aluminum, derived from the pressure received from the punch during cavity formation; a thread, imparted within the wall of the capsule, in turn imparting a thread on the outlet of the present small tube with open hole; at least a seal, installed on the internal side of the upper face of the capsule, isolating the product contained within the small tube and to increase the sealing properties of the package; and at least a lower band, adapted to represent a security seal so as to distinguish the capsules that have already been unscrewed from those that are still new.

The invention belongs to the technical field of intelligent equipment, and discloses a support for a rain gauge, which comprises a base and a mounting plate, the base is connected with the rain gauge, the mounting plate is connected above the base, and the mounting plate is used for mounting a terminal. The base comprises a connecting part, a supporting part and a supporting plate, an open hole is formed in the connecting part, the mounting plate is an L-shaped plate and comprises a mounting plate I and a mounting plate II which are vertically arranged, and an open hole is formed in the mounting plate II and fixedly connected with the open hole in the supporting part through a bolt and a nut. The invention further discloses a rain gauge which comprises an outer cylinder, a tipping bucket component and a terminal. A tipping bucket component and a terminal are arranged in the outer cylinder, the tipping bucket component measures rainfall flowing into the tipping bucket component and transmits data to the terminal, and the terminal is connected with the tipping bucket component through a support. The pluviometer is stable in installation, accurate in monitoring, ingenious and reasonable in structural arrangement, capable of fixedly installing the telemetering terminal, free of additional trepanning, reusable in parts, convenient to install and fix, convenient to transform, low in cost and suitable for application and popularization.

This utility model relates to a snap-fit ​​structure, a car door, and a vehicle. The snap-fit ​​structure connects an assembly and a door panel body, forming a cavity between the assembly and the door panel body. The snap-fit ​​structure includes a first connector and a second connector, both disposed within the cavity. The first connector connects to the assembly, and the second connector connects to the door panel body, with the first and second connectors engaging and securing each other. Compared to existing technologies, this utility model's snap-fit ​​structure snaps the assembly to the door panel body. In this structure, the first connector connects to the assembly, and the second connector connects to the door panel body, forming a cavity between them. Within this cavity, the first and second connectors snap together, connecting the assembly and the door panel body. The fact that both connectors are disposed within the cavity avoids opening holes in the door panel, maintaining the flatness of the door panel body.

The invention relates to the technical field of construction of an overhead line system embedded channel in a tunnel, in particular to a double-shaft double-spring hinge type elastic fixator which comprises a base, a horizontal guide rod frame, two vertical guide rods, a hinge type movable clamping groove and two springs, and the base is provided with two vertical sleeves and two horizontal sleeves; the horizontal guide rod frame comprises two horizontal guide rods, and each horizontal guide rod is arranged in a horizontal sleeve of the base in a sliding manner; each vertical guide rod is arranged in a vertical sleeve of the base in a sliding manner; and each spring is sleeved on one vertical guide rod and is positioned between the base and the hinge type movable clamping groove. According to the fixing device, the pre-buried channel is directly welded or bound on the secondary lining reinforcing mesh through the elastic fixing device, so that the situation that holes are formed in a tunnel secondary lining trolley is avoided, and the trolley cannot be damaged; the fixing mode is rapid, line production does not occupy the construction time of the secondary lining trolley, the construction work efficiency and the accuracy of the installation position are improved, then the engineering construction quality is improved, and the construction period is shortened.

A blind hole guiding structural part for a gas hose comprises a guiding part A and a guiding part B. The guiding part A comprises a magnetic suction head A, and the magnetic suction head A is magnetic. The lower part of the magnetic suction head A is connected with a metal hose; a pipeline fixing hoop is arranged below the metal hose; the guide piece B comprises a magnetic suction head B, and a metal hose is arranged at the lower part of the magnetic suction head B. The gas hose blind hole guiding device solves the problem that in the prior art, a gas hose is inconvenient to penetrate through a blind hole, double assemblies penetrate through an open hole respectively, contact adsorption is conducted in a darkroom, the threading difficulty of the blind hole is lowered, the gas hose blind hole guiding device is particularly suitable for blind hole guiding in the multi-bending environment, and the effect of convenient operation is achieved.

The invention relates to the technical field of oil exploration, and provides an analysis method and device for safe tripping-in of a well completion pipe string, and the method comprises the steps: obtaining the actual hook load data and well section information of an open hole section based on a drifting process; constructing a tubular column friction torque calculation model of the drifting drilling tool assembly; on the basis of the tubular column friction resistance torque calculation model, the actual hook load data of the open hole section and the well section information of the well, the well hole open hole section friction resistance coefficient is calibrated; on the basis of well section information and the well hole open hole section friction resistance coefficient, a solving model of the axial force of the well completion pipe string and a critical load value calculation model of well completion pipe string buckling are built; and on the basis of the solving model of the axial force of the well completion pipe string and the calculation model of the critical load value of buckling of the well completion pipe string, whether the well completion pipe string is safely tripped is determined. According to the method, the friction resistance coefficient in the drifting stage is determined, the invisible shaft cleaning state is known, the current friction resistance coefficient is used for evaluating the to-be-tripped well completion pipe string, and therefore operation risks and operation complexity are avoided, and the operation efficiency is improved.

An auxiliary head frame used in cooperation with a try-on frame comprises a frame body and a head band which are used for cooperating with each other to form an annular structure so that the auxiliary head frame can be conveniently worn on the head of a human body, inserting grooves used for being matched with the two ends of the head band are formed in the two sides of the frame body, and adjusting holes are further formed in the positions, at the inserting grooves, of the frame body. Adjusting gears are embedded in the adjusting holes, strip-shaped holes are formed in the two sides of the head band, and adjusting teeth used for being matched with the adjusting gears to adjust the tightness of the head band are arranged on the inner hole walls of the strip-shaped holes. An open hole is further formed in the middle of the frame body, a rack which is vertically arranged is inserted into the open hole, a hook which is used for supporting and matching the trial frame is hinged to the bottom of the rack, and a pinion which is used for being matched with the rack to adjust the height of the hook is installed on the frame body at the open hole. Part of weight of the try-on frame is transferred to the head, so that pressure of the lenses and the try-on frame on the patient during fitting can be reduced, and discomfort of the patient during try-on is reduced.

The invention belongs to the technical field of thermal spraying coating hole sealing, and discloses a hole sealing method based on the porosity of a thermal spraying coating, which comprises the following steps: forming a coating on the surface of a base material through a thermal spraying process, applying hole sealing glue on the surface of the coating, and forming a hole by utilizing the structural characteristic that open pores are communicated with one another. Enabling the hole sealing glue to naturally permeate into the coating under the action of gravity, enabling the hole sealing glue to at least permeate into the coating by 500 microns before curing by controlling the surface tension, viscosity and curing conditions of the hole sealing glue, and continuously filling holes; and then the coating is subjected to low-temperature curing treatment, so that the hole sealing glue forms a stable hole sealing structure in the holes. After the method disclosed by the invention is adopted, no less than 95% of open pores in the coating can be effectively sealed under the condition of not applying external pressure or vacuum assistance, so that the voltage resistance of the thermal spraying coating is stabilized at 500V or above, and the resistance value is improved from megohm level to gigaohm level, thereby obviously improving the electrical property and corrosion resistance of the coating.

The utility model relates to the field of machinery, in particular to a notebook computer shell aluminum-plastic combination technology. Tooling equipment for generating an injection molding fixing mechanism of an aluminum alloy notebook computer shell comprises a tooling table, and the notebook computer shell machined by the tooling table comprises an aluminum alloy shell; at least five cavities are formed in the aluminum alloy shell and serve as injection molding cavities of the fixing mechanism. The injection molding cavity is embedded in the aluminum alloy shell, an opening is formed in the upper portion, and an opening is formed in the lower portion. The injection molding cavities are arranged on the aluminum alloy shell to form an array structure; the tool table is provided with an injection molding opening, the injection molding opening is higher than the open hole of the injection molding cavity, and an injection molding material is allowed to enter the injection molding cavity through the open hole of the injection molding cavity; and the table top of the tool table and the at least five injection molding cavities enclose to form a cavity array of a closed injection molding material. And the injection molding material in the injection molding cavity and the injection molding piece on the surface of the aluminum alloy shell are bound and connected together, so that the effect of enhancing the connection strength between the aluminum alloy and the colloid is achieved.

The utility model provides a fixing assembly and a container system. The utility model discloses a fixing assembly. The fixing assembly comprises a fixing base; a first part of the fixing support is fixed to the fixing base, a second part abuts against the side wall of the container, the fixing support is provided with a first open hole, and the container is provided with a mounting hole formed in the side wall; and the limiting structure piece is connected to the screw in a sleeving mode, in the first installation state, the limiting structure piece is arranged in the first open hole and the installation hole in a penetrating mode and stretches into the container, and in the second installation state, the limiting structure piece abuts against the hole wall of the installation hole. Therefore, the fixing assembly drives the limiting structural part to be switched between the two working modes through the screw rod, so that the container can be limited and fixed to the fixing base through the fixing assembly, and then the fixing difficulty of the container can be reduced.

The utility model provides a multi-layer composite metal disc filtering system. Comprising an output pipe, a protective cover is fixed to the output pipe, a hydraulic rod is fixed to the protective cover through a support, a metal disc is clamped between the output pipe and the hydraulic rod, a fixing ring is clamped to the metal disc, a circular ring is clamped to the fixing ring, a filter screen is arranged on the circular ring, and a cavity is formed in the metal disc. A first filter membrane is arranged in the cavity, and a through hole is formed in the cavity. According to the multi-layer composite metal disc filtering system provided by the utility model, large particles are intercepted by materials in the output pipe through the filter screen, enter the fixed ring, enter the cavity through the open hole, pass through the cavity and are filtered for the first time through the first filter membrane, then are filtered for the second time through the second filter membrane, and flow out through the through hole; the problems that an existing metal disc is unstable in structure, when the water pressure is too large, the liquid leakage phenomenon is likely to occur, and the filtering efficiency and quality are affected are solved.

The invention relates to an anti-tear thin-wall sealing rubber sleeve for an open hole well, which comprises a rubber sleeve body, at least one group of bearing rings are arranged on the inner wall of the rubber sleeve body, and at least one group of outer tension bands are arranged on the shoulder part of the outer wall of the rubber sleeve body. Compression type operation is adopted in the setting process, when axial pressure is applied, the rubber sleeve body is extruded and expanded firstly, the second bearing ring plays a role in righting and guiding, it is guaranteed that a sealing ring belt in the center section of the rubber sleeve body deforms evenly, and preliminary sealing is achieved; along with increase of pressure, the upper section and the lower section of the rubber sleeve body gradually expand till making contact with the well wall, the first bearing ring and the third bearing ring are driven to cooperatively deform, sealing is further enhanced, and mechanical protection is provided; under the condition of extreme deformation, the first outer tension band and the second outer tension band can effectively limit radial displacement of the shoulder of the rubber sleeve body, and tearing or failure of the rubber sleeve body caused by too large deformation is avoided.

The utility model belongs to the field of medical treatment, and provides an integrated edged tool box which comprises a collecting box, a first partition plate and a shearing structure are arranged on the collecting box, the first partition plate is located in the collecting box and fixedly connected with the side wall of the collecting box, the first partition plate is provided with a first collecting hole, and the shearing structure is arranged above the first partition plate and fixedly connected with the side wall of the collecting box. The shearing structure comprises two blades, two folding rods and a warping plate, one ends of the two blades are rotationally connected through a rotating shaft, the other ends of the two blades are located on the two sides of the first collecting hole respectively, open holes are formed in the ends, close to the rotating shaft, of the two blades, one end of the warping plate is located above the rotating shaft, and the other end of the warping plate penetrates through the side wall of the collecting box to extend out; one ends of the two folding rods are connected with the ends, located in the collecting box, of the warping plates correspondingly, and the other ends of the two folding rods penetrate through the holes correspondingly to be connected with the first partition plate. A hose can be sheared through the edge tool box, operators are prevented from being punctured by needles, and tools such as scissors and tweezers are prevented from being polluted.

The utility model discloses a synthesis kettle convenient for pressure test. A pipe orifice of the synthesis kettle is connected with a pressure release valve through a middleware; the middle piece comprises a butterfly valve body and an extending body, the butterfly valve body is provided with a butterfly valve plate capable of being opened and closed, and the extending body is transversely provided with a through hole. The middleware is detachably connected with a testing assembly, an air pipe of the testing assembly penetrates through the through hole, one end, extending into the main body, of the air pipe is provided with an open hole, and the other end of the air pipe extends to be connected with the output end of an external air pressure adjusting device; and the synthesis kettle can be opened only when the butterfly valve plate of the butterfly valve main body is in an open state. Different from the conventional mode of pressure boosting detection on the reaction kettle, the device can directly and quickly perform pressure testing on the pressure release valve independently after the gas channel is cut off through the butterfly valve main body, so that the required pressure boosting time is shorter, the pressure release valve can be maintained and checked in a shorter time, and the normal use of the reaction kettle cannot be influenced by the arrangement of the device.