98results about How to "Guaranteed airtight connection" patented technology

The invention discloses a full-graduation concrete fracture expanding test testing machine under the action of high water pressure and mobile load. The full-graduation concrete fracture expanding test testing machine comprises an MTS testing machine actuation head A, a wedge-shaped loading frame, a neodymium iron boron rare earth permanent magnet, a pressure pulling force transmission steel shaft, a pre-burying bearing, a pressure pulling support piece, a sample support steel bar, a high pressure seal cylinder, a sealing cylinder cover plate, a sealing cylinder connecting rod, a non-contacting type optical measurement window and a high water pressure pump, wherein a wedge-shaped loading frame on which the neodymium iron boron rare earth permanent magnet is fixed, the pressure pulling force transmission steel shaft and the pressure pulling support piece form a closed magnetic field loop; and a dynamic loading part, a supporting part, a high pressure seal cavity part and the high water pressure pump jointly form the testing machine. The full-graduation concrete fracture expanding test testing machine provided by the invention can test crack initiation, extension and unstability processes of the water conservancy projection structure full-graduation concrete fracture under the action of high pressure and mobile load, overcome the defects that the existing testing machine only can perform a full-graduation concrete fracture expanding test under anhydrous pressure or hydrostatic pressure, the high water pressure and the mobile load can not be simultaneously applied and a concrete fracture expanding process can not be tested; and the full graduation concrete fracture expanding test testing machine provided by the invention has the characteristics that the structural design is simple, and the test function is various and the testing process is stable and controllable.

Provided is an electric heating glass kettle. The electric heating glass kettle comprises a glass cup body, a handle and a bottom cover, wherein the handle and the bottom cover are arranged on the cup body. The bottom of the cup body is provided with a heating disc. The heating disc comprises a body, a heating element, and a silicon ring, wherein the heating element and the silicon ring are arranged on the body, a neck portion is formed at the bottom of the cup body, the silicon ring and the body are fixedly connected in a sealing mode and wrap the neck portion, the neck portion is provided with a fastening ring, the bottom cover is connected with the fastening ring, and the handle is directly or indirectly connected with the fastening ring. Compared with the prior art, the electric heating glass kettle has the advantages that an embedded portion of the silicon ring and the body of the heating disc are fixedly sealed into one, then an elastic wrapping portion of the silicon ring is used for wrapping the neck portion of the cup body, and therefore flexible sealing connection between the heating disc and the cup body is achieved. The sealing between the heating disc and the cup body is guaranteed, structural uniformity of the cup body, the handle and the bottom cover is guaranteed, meanwhile, technological requirements on the cup body are reduced greatly, and assembly efficiency of products is improved.

The invention belongs to the technical field of electrical control cabinets, and discloses a cellular automatic electrical control cabinet with flame-retardant and fire-extinguishing functions. The control cabinet comprises an outer cabinet, a fire-extinguishing pipeline, a temperature sensor, a smoke sensor, a fire-extinguishing assembly and a processing device, wherein the fire-extinguishing pipeline, the temperature sensor, the smoke sensor are arranged in the outer cabinet, and the fire-extinguishing assembly and the processing device are arranged outside the outer cabinet. At least one fire extinguishing pipeline and at least one fire extinguishing assembly are arranged; the fire extinguishing assembly comprises a fire extinguisher and a driving base, and the fire extinguisher is mounted on the driving base; the processing device comprises a PLC processor and is electrically connected with the driving base; real-time monitoring is performed by the temperature sensor and the smokesensor to determine whether a fire occurs in the control cabinet, and if yes, a fire extinguishing device is cooperated to realize timely fire extinguishing so as to effectively reduce losses of the control cabinet in case of fire; and the fire extinguishing device is composed of the fire extinguishing pipeline, the common fire extinguisher and the driving base, production cost is low, the fire extinguisher and the driving base can be detached and replaced, and use cost is low.

The invention discloses a membrane oxygenation type container for transporting aquatic living bodies, comprising a box body on which a sealing cover, a water inlet pipe and a water outlet pipe are arranged. The membrane oxygenation type container for transporting aquatic living body is characterized in that the box body mainly comprises an oxygen supplying area and a fish culturing area which are separated from each other by a grid-like partition board, the oxygen supplying area is arranged on the side of the box body, at least one hollow fiber is laid in the oxygen supplying area, the wall of the hollow fiber is provided with micropores, one end of the hollow fiber penetrates through an air inlet hole so as to be connected with an outside oxygen supplying pipe, and a sealing device is fixed between the outer wall of the hollow fiber and the air inlet hole. Adopting the membrane oxygenation, the membrane oxygenation type container for transporting aquatic living body can realize the bubble-free oxygen supply, improve the oxygen dissolving efficiency, ensure the waterbody oxygen dissolving degree during the transportation of the aquatic living bodies and provide the environment suitable for the aquatic living bodies to live, thereby greatly improving the survival rate of the aquatic living bodies.

The invention provides a material cleaning device and a cooking appliance. The material cleaning device comprises a cleaning cavity and a stirring assembly, wherein an air inlet, a feeding opening and a water inlet are formed in the cleaning cavity and used for conveying airflow, materials to be cleaned and water for cleaning the materials to the cleaning cavity respectively; the stirring assembly is arranged in the cleaning cavity and can rotate in the cleaning cavity under the action of the airflow to stir the materials and water in the cleaning cavity. According to the material cleaning device, wind power is utilized to drive the stirring assembly to rotate to stir the materials and water in the cleaning cavity, the purpose of automatic cleaning is achieved, and the device is ingenious in conception, simple in structure and convenient to use.

The invention relates to a downhole expansion tool for a sleeve and a method for using the downhole expansion tool for the sleeve to expand the sleeve. The downhole expansion tool for the sleeve comprises an expansion assembly and a driving assembly, wherein the expansion assembly is used for expanding the sleeve, and the driving assembly is used for driving the expansion assembly to carry out expansion operation. According to the downhole expansion tool for the sleeve, when well drilling is carried out, the borehole size can be kept to be constant, constant hole diameter drilling and well completion operation of a whole well are achieved, and the downhole expansion tool for the sleeve is particularly applicable to construction of deep wells, extra-deep wells and complex wells.

The invention relates to a long-distance pneumatic conveying direct loading-shipping system for bulk materials, which relates to a loading-unloading device for vehicles and ships, and belongs to the technical field of mechanical equipment. The structure of the long-distance pneumatic conveying direct loading-shipping system for bulk materials comprises a stander, a filling head and a large-sized cloth-bag dust collector as well as a pneumatic conveying device, wherein the filling head fills materials into a compartment of a vehicle or a ship, the large-sized bag-cloth dust collector is used for separating the gas which is discharged from the filling head and is mixed with the materials from the gas which is discharged from the compartment of the vehicle or the ship and is mixed with the materials, and the pneumatic conveying device is used for conveying the materials into the filling head. Due to the adoption of the loading-shipping system, the problems of flying dust and low loading-shipping efficiency caused by adopting the existing conveying loading-shipping system when in pneumatic conveying loading and shipping can be solved. Before the gas enters a discharging pipe, the gas flow is separated from the materials, the gas flow is thoroughly exhausted or the dust is further separated from the gas flow, and the materials enter the discharging pipe and the compartment at a low speed, so that a great amount of natural or secondary flying dust can be avoided; and meanwhile, little flying dust produced inside the compartment can be further collected and removed, and the conveying efficiency is remarkably improved.

The invention relates to a flexible joint for a large-sized water-taking pump boat comprising a vertical sleeve joint, a vertical rotary sleeve, a horizontal sleeve joint and a horizontal rotary sleeve, wherein a water discharging opening is formed in the side wall or the bottom of the vertical sleeve joint; the vertical rotary sleeve is arranged at the top of the vertical sleeve joint in a rotary sealed state through a turning wheel supporting device; the horizontal sleeve joint is fixedly connected onto the vertical rotary sleeve; the horizontal rotary sleeve is movably connected to one side or two sides of the horizontal sleeve joint in a sealed manner, and is provided with water feeding openings. The vertical rotary sleeve and the vertical sleeve joint, and the horizontal rotary sleeve and the horizontal sleeve joint, which are mutually and rotatably connected, are adopted to respectively realize the rotary flexible connection of water conveying pipes between the pump boat and a shore base along a vertical axis and a horizontal axis; and the flexible joint can be used under movement, swinging and rotation of the pump boat in vertical and horizontal directions, and has the advantages of simple structure, low manufacturing cost, safety in use, long service life, good applicable performance and wide application range.

The invention discloses a condensing device which comprises a cooling pipe, a condensing tube, a heating tube and a clamping device, wherein the inlet of the condensing tube is designed into the shape of bell-mouth, and the inner wall of the bell-mouthed part of the condensing tube is a spherical ground surface. The outer wall of the heating tube connected with the condensing tube is a spherical ground surface matched with the spherical surface at the bell-mouthed part of the condensing tube, so that the sealing connection between the heating tube and the condensing tube can be ensured, and no gas is discharged from the contact surface, meanwhile, for further ensuring the sealing connection between the heating tube and the condensing tube, the contact opening part of the heating tube and the condensing tube is clamped by using the clamping device. In the condensing device, the condensing tube and the heating tube can be directly subjected to sealing connection without using rubber tubes, therefore, the frequent change of connecting parts is not required, meanwhile, the condensing device is convenient to disassemble, and the condensing tube and heating tube can be separated just by taking down the clamping device.

The invention discloses an arc striking device for ion plating and an ion plating device, and relates to the technical field of ion plating. The arc striking device comprises an arc striking hook, a connecting rod, a corrugated pipe, a drive device and a sealing insulating part. A mounting hole is formed in the side wall of a vacuum chamber of the ion plating device, the sealing insulating part isfixed into the mounting hole and connected with the mounting hole in a sealed manner, an output shaft of the drive device penetrates through the sealing insulating part to be fixedly connected with one end of the connecting rod, the drive device can drive the connecting rod to reciprocate in the axial direction, one end of the corrugated pipe is fixedly connected with one end of the sealing insulating part, the other end of the corrugated pipe fixedly sleeves the connecting rod and is connected with the connecting rod in a sealed manner, and the connecting rod penetrates through the corrugated pipe to be fixedly connected with the arc striking hook. The ion plating device comprises the vacuum chamber and the arc striking device for ion plating. The drive device drives the arc striking hook to move, acting force is large, hook adhesion is not easily caused, the corrugated pipe is arranged for static sealing, the sealing performance of the vacuum chamber is good, and vacuum is not easily damaged.

The invention provides an automatic cover flipping structure of a micro-centrifugal tube. By the automatic cover flipping structure, a cover can be opened conveniently, and time and labor are saved. The automatic cover flipping structure comprises the cover and a tube body, wherein the cover is arranged on the inner wall of an orifice of the tube body in a covering manner, an outer-edge annular surface of the cover clings to the inner wall of the orifice in an interference fit manner, and a connecting portion of the cover is arranged at a connecting end of the tube body by a hinge pin. The automatic cover flipping structure is characterized in that an outer-edge positioning bump is arranged on an outer-edge annular surface of the orifice, the cover is provided with a latch arranged at a position corresponding to the outer-edge positioning bump, the latch fastens the lower end surface of the outer-edge positioning bump when in a locking state, and two upward convex structures are arranged on portions of the connecting end of the tube body close to the orifice, are abutted to lower end surfaces of corresponding positions of the connecting portion of the cover when in locking states, and are of high-elasticity material structures.

The invention discloses a female pelvic floor muscle repairer. The female pelvic floor muscle repairer comprises a rod attaching to the vaginal wall, a handle for conveniently inserting the rod into the vaginal orifice, a microcurrent conductive block used for conveying microcurrent to the female pelvic floor muscle, and a battery for providing a direct current power supply to the microcurrent conductive block, wherein the microcurrent conductive block is arranged on the outer wall of the rod. The female pelvic floor muscle repairer is simple in structure and convenient to use, and can be used for effectively repairing the female pelvic floor muscle.

The invention discloses a double-ring coaxial optical fiber turbine flow meter and a test method. The double-ring coaxial optical fiber turbine flow meter comprises a pipe casing, a turbine, a diversion frame and a double-ring coaxial optical fiber probe. The turbine is fixedly connected with the diversion frame and arranged in the pipe casing, the wall of the pipe casing is provided with a screw hole, the double-ring coaxial optical fiber probe is perpendicular to the axial direction of the pipe casing, matched with the screw hole in the wall of the pipe casing and arranged in the middle portion of the turbine in the axial direction. The double-ring coaxial optical fiber probe is used for picking up a light pulse signal of blades of the turbine, light intensity optical fibers perpendicularly irradiate to the surface of the turbine, two groups of receiving optical fibers receive the reflected light, and the perpendicular distance from the optical fiber probe to the turbine is calculated through the light intensity ratio of the two groups of receiving optical fibers. The rotational frequency of the turbine can be obtained according to the relationship between the reflective distance and the light intensity ratio and then a flow rate value can be calculated. The optical fiber turbine flow meter uses the reflective double-ring coaxial optical fiber probe to avoid errors caused by magneto-resistance, so that the measuring range of the flow measurement is expanded, the high anti-electromagnetic interference capability is achieved, and the accuracy of the measurement is improved.

The invention provides a material cleaning device and a cooking utensil. The material cleaning device includes: a cleaning cavity, and the cleaning cavity is provided with an air supply port, a material inlet and a water inlet; wherein the gas supply port, the material inlet and the water inlet are respectively It is used to deliver airflow, materials to be cleaned and water for cleaning materials to the cleaning chamber. The materials and water can move relative to each other under the action of airflow to clean the materials. The material cleaning device provided by the invention uses wind force to drive the material and water to move relative to each other to achieve the purpose of automatic cleaning. On the one hand, the wind can effectively promote the movement of the material and water, and has a stirring effect on the two, thereby realizing the air stirring of the material. , to clean the material more effectively; on the other hand, the air agitation will not cause excessive collision to the material, so it will not break the food material, thus ensuring the integrity of the material particles and avoiding the loss of nutrients caused by the cleaning process; and the structure Simple and easy to use.

The invention provides a heat transfer coefficient detection heating device and a heat transfer coefficient detection device. The heat transfer coefficient detection heating device comprises a box anda heating device, wherein the box comprises a box body and a cavity; the cavity is formed in the box body; the opening end of the box body is in sealed connection with the inner surface of a to-be-detected enclosure structure; the heating device is arranged in the box. The heat transfer coefficient detection heating device has the advantages that when the heat transfer coefficient of the enclosure structure of a building is detected by a heat flow meter, the opening end of the box body is in sealed connection with the inner surface of the to-be-detected enclosure structure, the interior of the box is heated by the heating device, the temperature in the box is 10 DEG C higher than the temperature of the outer side of the enclosure structure, and then the heat transfer coefficient can be detected; the structure is simple, the handling of air conditioners at site is not needed, the working efficiency is greatly improved, the indoor heating is also not needed, the operation is simple, andthe heat transfer coefficient can be detected in all seasons.

The invention discloses an adapter of a lower drain pipe. The adapter comprises a main joint body, the main joint body is provided with a main water inlet end and a main water outlet end, a main water passage which is communicated with the main water inlet end and the main water outlet end is arranged between the main water inlet end and the main water outlet end, and a cylindrical filter device is arranged in the main water passage; a stop baffle disc which is in threaded connection with the main water outlet end or is integrally formed with the main water outlet end is arranged below the main water outlet end, the stop baffle disc is downwards provided with a connecting part, the outer side of the connecting part is sleeved with a sealing sleeve, and the upper portion of the sealing sleeve extends outwards to form an outer circle part with the outer diameter not smaller than that of the stop baffle disc; and the main water inlet end is connected with a secondary connector body or directly connected with a close-fitting connector, and the close-fitting connector is connected with an outlet of the lower drain pipe in a close-fitting manner. According to the adapter of the lower drain pipe, effective sealing and fixed connection between the lower drain pipe and a floor drain or a sewer pipe can be achieved, connector expansion and impurity filtering can be facilitated, the long-time drainage requirement of multiple lower drain pipes is met, and the adapter has the advantage of being simple and practical in structure.

The invention discloses a vacuum sealing clip, which comprises two flange snap rings, sealing pieces and fastening pieces, wherein the two flange snap rings are symmetrically arranged, one ends of the flange snap rings are in pin joint, the sealing pieces are arranged at the inner rings of the flange snap rings, the fastening pieces are arranged at the other ends of the two flange snap rings, and the other ends of the two flange snap rings are mutually clamped. Two glass pipes or a glass pipe and a metal pipe can be clamped to be fixed by the sealing clip, the glass pipes can be prevented from being broken, and the sealing performance is also ensured. In addition, the sealing clip is convenient and quick to assemble and disassemble, and has the advantages of good generality and the like.

The invention discloses a field facility reforming method for comprehensive planting and breeding of a procypris merus rice field. The method comprises the following steps of 1, trimming a rice fieldparcel of the rice field; 2, arranging a circle of field ridge at the periphery of the rice field; 3, digging a fish furrow and a fish pit in the rice field parcel; 4, erecting a melon and fruit shedat the top of the fish pit. The method mainly comprises the steps of field arrangement, field ridge hardening and reforming, fish furrow and fish pit design, anti-escape measures and melon and fruit shed building. Due to basic facility reforming, the comprehensive planting and breeding yield for the procypris merus rice field is increased, the purposes of dual-purpose water, multi-harvesting in one field, stable grain, increased effect and win-win of grain and fish are achieved, and industrial planting and breeding sustainable development for comprehensive planting and breeding of the rice field is promoted.

The invention discloses a two-stroke four-cylinder piston engine muffler for medium and small unmanned aerial vehicles, belonging to the field of unmanned aerial vehicle engines. The two-stroke four-cylinder piston engine muffler for the medium and small unmanned aerial vehicles includes a left muffler sub-component and a right muffler sub-component which are symmetrically arranged; the left muffler sub-component includes a flange assembly, an intake pipe and a muffler assembly; the muffler assembly includes an expansion chamber, an inner inserting tube, a front end cover, a front partition, arear partition and a rear end cover; the side walls of the inner inserting tube are provided with a number of second through holes along the circumferential direction, which are combined with the twocavities separated by the rear partition to form a double resonance cavity muffler; and the upper end of the side wall of the expansion chamber is provided with two through holes along the axial direction, which are connected to the two cylinders on the left side of the engine longitudinal axis through the intake pipe and the flange assembly. The invention designs an impedance composite muffler,which combines two types of structure mufflers of blocking and resistance, so that the muffler has the characteristics of a blocking muffler to eliminate medium and high frequency noise and a resistive muffler to eliminate low and medium frequency noise. Test data shows that the maximum insertion loss of the muffler can reach 14.48dB.