3944results about How to "Achieve sealing" patented technology

The invention provides a method for preparing a polymer microporous foaming material by supercritical mould foaming. The method comprises the following steps of: heating a foaming mould on a mould press to the foaming temperature; placing a polymer into the mould; closing the mould by using the mould press; sealing the mould; introducing supercritical fluid, which swells and diffuses to the polymer, into the mould; and opening the mould by using the mould press to release pressure and foam to obtain the polymer microporous foaming material. Compared with the prior art, the method has the advantages that: the high-temperature and high-pressure supercritical fluid is used for swelling the polymer, so the moulding cycle is greatly shortened; the limit that only microporous foaming sheet material with lesser thickness can be manufactured in the prior art is broken through, so a polymer microporous foaming plate with greater thickness can be manufactured; when the mould is opened, the pressure-releasing speed is high and the foaming pore core-forming speed is high, so the formed microporous foaming material has smaller foaming pores, higher pore density and more excellent performance; and multiple layers of moulds can be placed on one mould press, so the method is suitable for industrialized scale production.

The invention discloses a composite drive mandrel anchoring casing head and relates to the technical field of wellhead devices, the composite drive mandrel anchoring casing head comprises a casing head shell and an anchoring mandrel unit, a pressurizing hole is further formed in the side wall of the casing head shell, the first end of the pressurizing hole is connected with an anchoring hole part,and the second end of the pressurizing hole extends to the outer side of the casing head shell. The anchoring mandrel unit comprises an anchoring mandrel body, a slip exciting piece, an anchoring slip and an annular piston body, wherein the slip exciting piece, the anchoring slip and the annular piston body are sequentially arranged on the outer side of the anchoring mandrel body from top to bottom in a sleeving mode. The casing head can meet the hanging requirement of a mandrel hanger, after the anchoring mandrel body and the casing head shell are anchored, pipe column shifting can be avoided, and the stability and the reliability of the casing head are improved.

The invention provides a disinfection and drying device for medical instruments used in medical care, which belongs to the field of medical care. It includes a spray device, a gas filter device, an electric heating rod, an ultraviolet lamp, a medical device carrying device, a partition and a motor; the spray device is fixed on the upper end of the disinfection drying box with bolts and nuts; the gas filter device is fixed On the upper right side of the disinfection drying box; the partition plate is welded on the inner wall of the disinfection drying box; the motor is fixedly arranged on the bottom end surface of the inner wall of the disinfection drying box and in the motor cover; the medical device carrying device is welded on the upper end of the rotating shaft; The electric heating rod is fixedly arranged on the right side wall inside the disinfection drying box, in the heating cover; there are several ultraviolet lamps, which are fixedly arranged on the left side inside the disinfection drying box, and are arranged in the glass cover. The device of the invention can realize the rotation, spray cleaning, disinfection and drying treatment of medical instruments, has high treatment efficiency, and simultaneously collects waste liquid and treats waste gas.

The invention relates to a technology and equipment for dedusting mixed oil gas, in particular to the technology and the equipment for dedusting mixed oil gas formed by splitting waste rubber and waste plastic. The technology is characterized in that the oil gas is sprayed and dedusted by same type of oil after being filtered and dudusted; and when dust falls, and oil adhered on the dust is converted into gaseous state from liquid state. The equipment comprises a tower body of which the lower end is provided with an oil gas inlet, wherein the tower body is internally provided with a filteringand dedusting mechanism and a spraying device for same type of oil, and the spraying device is arranged above the filtering and dedusting mechanism; the filtering and dedusting mechanism comprises dedusting rotary cage controlled by a lateral shaft; and the total volume of the filler filled into the dedusting rotary cage under the natural state is smaller than the volume of the dedusting rotary cage. In the invention, the reasonable technology and the reasonable equipment are adopted for dedusting and purifying oil obtained by splitting waste rubber and waste plastic, oil discharging quality and carbon black quality are improved, environmental pollution is lightened, thus providing a new path for solving the increasingly serious energy crisis, so that the technology and the equipment can be widely popularized and used.

The invention discloses a novel screw rotor tooth shape of a twin screw compressor. The novel screw rotor tooth shape comprises a male rotor tooth shape and a female tooth shape, and is characterized in that each tooth shape on the end surface of the male rotor and the female rotor consists of six segments of curves in smooth connection, and the curves comprise an ellipse arc, a circular arc and an enveloping line thereof, wherein the six segments of curves of each tooth of the female rotor comprise: a tooth curve ellipse arc a2b2, a tooth curve circular arc b2c2, a tooth curve arc c2d 2, a tooth curve circular arc enveloping line d2e2, a tooth curve circular arc e2f2 and a tooth curve circular arc f2g2, wherein the curves of each tooth are connected in sequence. The six segments of curves of each tooth of the male rotor comprise a tooth curve ellipse arc enveloping line a1b1, a tooth curve circular arc enveloping line b1c1, a tooth curve pin tooth circular arc c1d1, a tooth curve circular arc d1e1, a tooth curve circular arc enveloping line e1f1and a tooth curve circular arc f1g1; and the curves of each tooth are connected in sequence. Therefore, when the tooth surfaces are in conjugate meshing, the tooth surfaces of two rotors are improved to 'belt' sealing from 'line' sealing, so as to improve the sealing effect obviously, contribute to forming a lubricating oil film and reducing tooth surface abrasion, and prolong the rotor life greatly.

The invention discloses a torsional impact drilling device which comprises a drill bit and a high-frequency torsional impact mechanism. The high-frequency torsional impact mechanism is connected with the drill bit and used for providing impact torque for the drill bit to break a rock stratum. The high-frequency torsional impact mechanism internally comprises a jet flow reversing element and a rotary impact part. The hydraulic energy of fluid entering the high-frequency torsional impact mechanism can be converted into reciprocating circumferential high-frequency low-amplitude rotating impact of the rotary impact part after passing through the jet flow reversing element to act on the drill bit. The device is smaller in structure and is provided with a smaller number of quick-wear parts, so that the mechanical drilling speed is better improved, and the service life of the drill bit is better prolonged.

The invention discloses a shielded, sealed and anti-rotation circular connector which comprises a plug and a socket. The plug comprises a plug shell assembly and a tail assembly, and the socket comprises a socket shell assembly and a tail assembly; the plug shell assembly comprises components including a shell, a connecting ring, jacks, a shielding ring, a locking backstop mechanism, toothed sleeves, insulator assemblies and the like; the socket shell assembly comprises components including a socket shell, pins, a U-shaped sealing ring, a boundary sealing pad, insulator assemblies, toothed sleeves and the like; each tail assembly comprises a connecting nut, a sleeve, a cone-point set screw, elastic parts, a shielding bushing and the like. The shielded, sealed and anti-rotation circular connector has the advantages that after the plug is connected with the socket, a cable shielding layer without skin is directly clamped by the shielding bushings of the tail assemblies of the plug and the socket, so that the connector and a cable can be circularly shielded and can be prevented from being pulled by external force; the connecting nuts are fixedly connected with the sleeves by the elastic parts, and the sleeves are driven to axially move when internal threads on the connecting nuts are matched with external threads on the plug shell/the socket shell, so that the sleeves and the shells can be sealed.

The disclosure relates to a peripheral sealing gland to form a seal, between an elongate member and a substantially flat surface. The gland has an at least in part tapered skirt or frustoconical shaped skirt through which the elongate member is to pass and defining at the upper periphery of the skirt and deformable upper seal to deform about and seal to a periphery of said elongate member. A flange depends from the lower periphery of the skirt including on its outward from the skirt presented surface, at least one endless lip to seal when brought into contact, against said substantially flat surface. A compression ring is able to bear on said flange, to be fastened to said substantially flat surface to capture the flange therebetween. In an alternative embodiment a planar flange with at least one endless lip seal is disclosed, and a further alternative embodiment combines this with the frusto-conical shaped skirt.

The invention relates to a steam box and microwave oven all-in-one machine. The steam box and microwave oven all-in-one machine comprises a box body. A cooking chamber oven cavity is formed in the box body. An oven door assembly used for opening or closing the cooking chamber oven cavity is arranged on the front side of the box body. A steam generating device, a microwave generating device, a control device and a microwave guide device are further arranged in the box body. An outlet of the microwave guide device is communicated with a microwave inlet port, a microwave stirrer is arranged on the microwave inlet port, and a flat plate located in the cooking chamber oven cavity is arranged above the microwave stirrer. The oven door assembly is sequentially provided with a door handle, door glass, a door body support, a metal door body, a door body sealing ring support, a door body sealing ring and a door seal from exterior to interior. The steam box and microwave oven all-in-one machine can achieve the heating function of a microwave oven and the functions of a steam box. Meanwhile, the oven door assembly can effectively prevent microwaves and steam from leaking, condensate water generated on the inner wall of the oven door body can further be guided into the cooking chamber oven cavity, and thus hidden sanitation danger caused by the phenomenon that the condensate water flows out of the cooking chamber oven cavity is avoided.

The invention discloses a timed passive air sampler, which comprises an air sampler main body, wherein the air sampler main body comprises a packaging barrel with an opening at the top, an adsorbent cage which is sheathed in the packaging barrel, a blocking pillar, an electromagnet and a timing driving circuit; a timing beginning sensor and a mounting bracket are arranged on the side wall of the packaging barrel; a rubber plug matched with the top of the packaging barrel is arranged at the top end of the adsorbent cage; a return spring is arranged between the bottom of the adsorbent cage and the bottom of the packaging barrel; a bayonet which can be pulled out to expose the packaging barrel and a sensing body corresponding to the timing beginning sensor are arranged on the adsorbent barrel; the blocking pillar is arranged on the mounting bracket and can move in the radial direction of the packaging barrel and be matched with the bayonet; the electromagnet is arranged on the outer wall of the bracket of the packaging barrel and can control the blocking pillar to be departed from the bayonet; and the timing driving circuit is connected with the timing beginning sensor and the electromagnet. The timed passive air sampler can implement the accurate automatic control of the sampling time, automatic packaging, and effectively improve the sampling accuracy of the passive air sampler.

The invention relates to a puncture device which is good in sealing performance. The puncture device comprises a sealing assembly, wherein the sealing assembly comprises a plurality of elastic sealing pieces arranged between a pair of rings. Each elastic sealing piece comprises a conical surface thin wall part in the shape of a circular cone and an annular part connected to the bottom of the conical surface thin wall part, wherein a fan-shaped notch is formed in the conical surface thin wall part, and the top end of the fan-shaped notch is the top end of the conical surface thin wall part. The annular parts of the elastic sealing pieces are stacked to enable the conical surface thin wall parts of the elastic sealing pieces to form a conical sealing piece, and then a surgical instrument penetrating through the sealing assembly is made to be in clearance fit with the sealing assembly in a sealing mode. A 300-340 degree circumference is arranged on the bottom of the conical surface thin wall part of each elastic sealing piece. After the surgical instrument penetrates through the sealing assembly, the lateral wall of the surgical instrument can be wrapped with the radial edges of the fan-shaped notches of the elastic sealing pieces more tightly, so that sealing performance is improved, and even when the air pressure in the enterocoelia reaches 8KPa, air leakage can not happen.

The invention discloses a natural gas hydrate sediment triaxial test device, and belongs to the field of testing the mechanical properties of natural gas hydrate sediment. The device comprises a triaxial test device main machine, a temperature control system, a pore pressure control system, a confining pressure control system and a computer data acquisition and control system. The triaxial test device main machine, which is in a dual-pressure-chamber structure, can be used for accurately measuring volume change in the sediment in a natural gas hydrate decomposing process; a load sensor is arranged inside the pressure chamber and is capable of improving the precision of intensity data; a pre-cooling hollow cavity is formed inside a base to pre-cool pore gas and pore water which enter a sample, so as to relieve the decomposition of the natural gas hydrate in a saturated water process and to improve the precision of temperature control; in a sample installation process, a quick coupling is adopted for connection, so that the operation is convenient and rapid. The device can simulate the natural gas hydrate decomposing process under mining conditions, so as to achieve the high-precision temperature control, and accurate measurement of intensity and volume change; and the device has great significances for understanding the mechanical properties of the natural gas hydrate sediment and assessing the stability of a reservoir.

The invention discloses a method for classifying silicon carbide micro powder and classifying equipment of the method, which belong to the technical field of classification of micro powder. The method mainly includes steps that the silicon carbide micro powder sequentially enters at least two classifying machines which are serially connected, each classifying machine is provided with a self-suction sealing device, the classifying precision of each downstream classifying machine is higher than that of the adjacent upstream classifying machine, a cyclone collector is connected with the tail-end classifying machine and collects sorted silicon carbide micro powder; a bag dust collector collects waste discharged from the cyclone collector, and a system is powered by an induced draft fan disposed on a downstream of the bag dust collector. By the aid of the method and the classifying equipment, technical problems that in the prior art, the classifying precision of silicon carbide micro powder is low, extraction rate of fine powder is low, distribution of granularities of finished products is wide are solved. In addition, the method and the classifying equipment are widely applied to finely classifying silicon carbide grains.

The invention discloses a multi-functional spindle mechanism used for the small deep holes electrical discharge machining, belonging to the technical field of micro non-traditional machining. The multi-functional spindle mechanism comprises a rotating spindle mechanism, a transmission mechanism, a normally closed clamp mechanism, a sealing mechanism, an electric brush mechanism, a wire replacing mechanism, a normally opened clamp mechanism, a guide mechanism and a connecting mechanism, wherein the rotating spindle mechanism, the transmission mechanism, the normally closed clamp mechanism, the sealing mechanism, the electric brush mechanism and the wire replacing mechanism are fixedly mounted on an upper mounting plate, and the normally opened clamp mechanism is mounted on a lower mounting plate; the upper mounting plate is connected to the lower mounting plate through the guide mechanism and a degree of freedom of relative movement in the z direction is kept; the upper mounting plate is connected to a z-axis top plate through the connecting mechanism, and the lower mounting plate is connected to a z-axis bottom plate through the connecting mechanism. The mechanism processes the film cooling group holes in the hot components of the aero-engines and the gas turbines, which can realize multiple functions of the forward pushing creep feed, the high precision rotation and the hollow high pressure flushing of the tool electrodes, and the on-line replacement of the electrodes.

The invention discloses a test system for the water tightness test of a tunnel deformation joint waterstop, which comprises two steel tanks mounted, in a sealed manner, at two sides of a waterstop to be tested, a steel structured test bench, an atmospheric pressure test bench, a hydraulic pressure test bench, an air compressor, a remote-distance full-automatic observing and reading apparatus and a safety protection device. The test device of the invention can be used for the water tightness test of a plurality of waterstops, realize random opening displacement and shear displacement accurately, and simulate the stress condition of deformation joint waterstop structure under different working conditions by applying atmospheric pressure in balloon to a tested object through the atmospheric pressure test bench and applying hydraulic pressure to the steel tanks through the hydraulic pressure test bench to simulate seawater pressure. The system and the method are suitable for the test of OMEGA and GINA waterstops as well as expandable waterstop.

The invention relates to the technical field of cooking appliances and in particular relates to a cooking appliance with an automatic exhaust function. The cooking appliance with the automatic exhaust function comprises a cover, an exhaust pipe arranged on the cover, a pressure-limiting valve which sleeves the exhaust port of the exhaust pipe and is used for sealing or unsealing the exhaust port, and a pressure-limiting valve driving device and a control device; the pressure-limiting valve driving device is capable of driving the pressure-limiting valve to move upwards and unseal the export port under the control of the control device. The cooking appliance with the automatic exhaust function is capable of stopping the pressure-limiting valve from sealing the exhaust port by match of the control device and the pressure-limiting valve driving device and thus realizing exhaust of the electric pressure cooker. Potential safety hazards caused by directly operating the pressure-limiting valve by the hands are avoided; meanwhile, the device for realizing automatic exhaust of the electric pressure cooker is simple in structure and convenient to operate.

The invention discloses a rock disturbance generating mechanism, which comprises a first vertical plate and a third vertical plate. A second guide rod is fixed between the first vertical plate and the third vertical plate, and the second guide rod passes through a driving frame; a driving screw rod passes through the driving frame, the first vertical plate and the third vertical plate and is in screwing assembling with the driving frame through thread; the driving screw rod passes through one end of the third vertical plate and is connected with the output shaft of a loading motor; an impact plate can slide on the first guide rod; the back of the impact plate is provided with an impact disc, one end surface is connected and fixed with one end of an impact guide rod; the impact guide rod is sleeved with an impact spring, and the other end of the impact guide rod is provided with an impact guide end; an automatic loading mechanism is arranged on the driving frame; the bottom part of the loading motor is provided with a motor supporting plate; one end of an impact shaft is provided with a peripheral mounting head, the other end passes through the first vertical plate, and the end, passing through the first vertical plate, is provided with an auxiliary impact disc; and the impact shaft is connected with the loading shaft through a connection shaft assembly. The invention also discloses a relaxation-disturbance integrated experiment device applying the above rock disturbance generating mechanism.