182results about How to "Achieving tightness" patented technology

The utility model relates to the technical field of air tightness detection tools, in particular to a novel air tightness detection tool for a heat exchanger, which reduces the operation burden of personnel and improves the detection efficiency. The PEEK material realizes end face and radial sealing according to structural requirements, and fits an actual application scene of the heat exchanger; the highly-integrated tool can adapt to airtightness detection of heat exchangers of different sizes and structures through replacement of the supporting blocks and the cushion blocks, and the development cost of the airtightness tool is greatly saved. Comprising a base and a first supporting block, and the first supporting block is installed on the outer side wall of the base; the device comprises a base and further comprises a positioning assembly, a moving device, a first air inlet head, an adapter, air inlet blocks, a pressing block, a sealing head, a first sealing ring, a second air inlet head and a second sealing ring, the positioning assembly is arranged on the base, the two air inlet blocks are installed on the base through the moving device, and the moving device is used for driving the two air inlet blocks to move horizontally. And every two groups of adapters are respectively arranged on one group of air inlet blocks in a communicating manner.

The utility model relates to air purification and filter technical field discloses a kind of high-efficiency filter with U-shaped groove sealing frame, including U-shaped frame one, the right side of U-shaped frame one is provided with U-shaped frame two, the inside of U-shaped frame one and U-shaped frame two is all provided with U-shaped groove, the inside of U-shaped frame one and U-shaped frame two is provided with mounting assembly, the inside of U-shaped frame one and U-shaped frame two is provided with mounting frame, the inside of mounting frame is provided with filter assembly. In the utility model, by the cooperation of limiting groove, limiting block, fixed bolt, mounting groove and jack, two U-shaped grooves can be sealed connection, and under the action of buffer pad and sealant, the problem of insufficient sealing effect and significant decline in filtration efficiency is solved, so that the sealing effect of mounting frame and filter material and U-shaped groove is realized, the wear during work is reduced, and the service life is increased.

The application relates to a bag-in-bag-out filtering device, which relates to the technical field of biological safety and comprises the following: a ventilation duct is arranged in a box body; an air inlet and an air outlet are arranged on the box body and communicate with the ventilation duct; one or more filters are movably arranged in the ventilation duct; an opening is arranged on the box body and communicates with the ventilation duct; a sealing door is detachably arranged on the opening; a detection piece is arranged on one side of the box body close to the sealing door; and a frame body is arranged in the box body and abuts against the filter; the box body comprises a main body, an air inlet shell, an air outlet shell and a cover plate, and the ventilation duct is formed between the main body and the cover plate; the frame body and the main body are integrally bent and formed, one end of the frame body is embedded in the main body, and the other end of the frame body is bent and connected with the end of the main body. Compared with a traditional filtering box, the filtering device is integrally formed, welding leakage is avoided, the filtering device is not easy to deform, good sealing performance and pressure bearing strength are maintained, and the cost is reduced.

This utility model discloses a sealed food storage container, including a container body, a lid that fits with the container body, and a flexible sealing ring. The lid is a downward-opening cover structure. An annular groove with the opening facing downwards is provided around the outer edge of the container body's opening. The upper part of the sealing ring is embedded in the annular groove, while the lower part of the sealing ring protrudes outside the annular groove, sealing with the inner wall of the lid when the lid is placed on the container body's opening. This sealed food storage container achieves a seal while preventing the sealing ring from contacting the food inside the container, thus effectively preventing food stains from remaining on the sealing ring and preventing contamination of the food inside the container. Therefore, frequent disassembly and cleaning of the sealing ring is unnecessary, reducing the user's maintenance burden. Furthermore, since the edge of the lid and the sealing ring are not located within the internal space of the container body, the container body can achieve a larger effective volume with the same external dimensions, fully accommodating food and improving its internal space utilization.

The utility model discloses a power distribution cabinet with a cable protection structure, relates to the technical field of power distribution equipment, and provides the following scheme for solving the problems proposed in the background technology: the power distribution cabinet comprises a power distribution box, the front surface of the power distribution box is rotatably connected with a cabinet door, and the inner bottom wall of the power distribution box is fixedly connected with a protection assembly; the back surface of the distribution box is provided with a plurality of wire inlet holes, and the right side of the distribution box is fixedly connected with a sealing assembly. According to the utility model, through the arrangement of the protection assembly, during use, a cable can be guided and protected by using the guide sleeve, the internal silica gel sheath can reduce the wear of the cable at the bending part, and meanwhile, the front-back position of the guide sleeve can be changed through the slide block after the adjusting screw rod is rotated; therefore, the cable does not need to be greatly bent when electromechanical devices with different sizes are connected, so that the pressure on the surface of the cable is reduced, and the protection effect on the cable is relatively good.

The utility model discloses double-layer laminated glass and relates to the technical field of glass. The double-layer laminated glass comprises a laminated glass body, a sleeve seat and a positioning base, the sleeve seat and the positioning base are arranged on the outer side of the laminated glass body, a first rubber ring is movably clamped in the sleeve seat, a second rubber ring is movably clamped in the positioning base, and a locking mechanism is arranged between the sleeve seat and the positioning base. According to the double-layer laminated glass, loading of the laminated glass body is convenient through the sleeve base, the positioning base and the locking mechanism, the laminated glass body is protected through the sleeve base and the positioning base, sealing and buffering of the laminated glass body are achieved through the first rubber ring and the second rubber ring, and when the first rubber ring and the second rubber ring are aged, the first rubber ring and the second rubber ring are sealed and buffered. And the first rubber ring and the second rubber ring can be conveniently and rapidly replaced and maintained, so that the device is easy to maintain, and the use requirements are met.

The utility model discloses an explosion-proof capacitor cover plate fastening device, which comprises a capacitor, the top surface of the capacitor is movably connected with a cover plate, the side surface of the cover plate is fixedly connected with a fixed plate, the outer surface of the fixed plate is provided with a fixed protection mechanism, and the inside of the side surface of the fixed protection mechanism is provided with a heat dissipation unit. According to the utility model, the protective cover is fixed in the case through the mounting plate and is positioned on the outer surface of the fixed capacitor, so that the capacitor can be prevented from being damaged due to collision and influencing the normal operation of the capacitor, and the heat dissipation effect on the capacitor can be enhanced by fixing the heat dissipation unit on the side surface of the fixed protective mechanism and fixing the heat dissipation unit through bolts; the service life of the capacitor is prolonged, the movable baffle is taken out from the interior of the buckle, the fixing plate on the side face of the cover plate is clamped into the interior of the back plate, the movable baffle is inserted into the interior of the buckle again, the movable baffle is fixed, and it can be guaranteed that the cover plate cannot shake through cooperation of the movable baffle and the back plate.

This utility model relates to the field of motor sealing structure technology, specifically a heat dissipation motor sealing structure for a high-pressure explosion-proof fan. It includes an explosion-proof motor body, a matching flange assembly fixed to one end of the motor body, a heat dissipation component external to the flange assembly, an annular groove on the end of the motor body near the flange assembly, a sealing element embedded in the annular groove that abuts against the flange assembly, and multiple sealing rings at the rotatable connection between the end shaft of the explosion-proof motor body and the flange assembly. This utility model effectively dissipates the heat generated by the generator through the heat dissipation component external to the flange assembly, the sealing element embedded in the annular groove abuts against the flange assembly, and the sealing rings at the rotatable connection between the end shaft of the explosion-proof motor body and the flange assembly. The combination of these multiple structures achieves the dual purpose of heat dissipation and sealing.

This utility model discloses a pressure testing fixture for a sealing component, including a pressure testing bracket. A bearing sleeve is fixedly connected to the inner wall of the pressure testing bracket, and a main shaft is fixedly connected to the inner ring of the bearing sleeve. A support sleeve is fixedly connected to the inner wall of the pressure testing bracket. A hinge seat is fixedly connected to the right end of the pressure testing bracket, and a sealing bushing is fixedly connected to the inner wall of the hinge seat. A shaft is fixedly connected to the inner wall of the sealing bushing, and a mechanical seal outer sleeve is fitted onto the outer surface of the sealing bushing. The left end of the mechanical seal outer sleeve is fixedly connected to the right end of the hinge seat, and a fastening nut is threaded onto the outer surface of the right end of the shaft. This utility model, through the configuration of the pressure testing bracket, bearing sleeve, main shaft, support bearing, sealing bushing, hinge seat, mechanical seal outer sleeve, and fastening nut, allows for tightening and positioning of the shaft by tightening the fastening nut, achieving compressive contact between the shaft and the main shaft, increasing the compressive force between the main shaft and the shaft, and achieving the sealing effect of the sealing component during compression, thus facilitating pressure testing of the sealing component.

The utility model relates to the technical field of pipeline sealing rings, in particular to a farmland PVC pipeline bell and spigot sealing ring which comprises an annular sealing ring body, the inner side of the sealing ring body comprises a first sealing face and a second sealing face which are sequentially connected from top to bottom, and the first sealing face and the second sealing face are both conical. The sealing ring is reasonable and compact in structure, the second sealing face is arranged, the inner side sleeve can make sealing contact when the inner side of the upper portion of the sealing ring body is sleeved with the inner side sleeve, the sealing effect between an inner side pipeline and the sealing ring body is guaranteed, the sealing protrusions are arranged, the inner surface of the sealing ring body and the outer wall of the inner side pipeline make line contact, and the sealing effect is better compared with surface contact. In this way, the sealing performance between the sealing ring body and the outer wall of the inner side pipeline can be guaranteed, the friction force generated when the sealing ring body is installed on the outer wall of the inner side pipeline can be reduced, the disassembly and assembly difficulty is lowered, and the at least two sealing protrusions can avoid the leakage phenomenon caused by unevenness of the outer wall of the pipeline due to surface machining tolerance.

The utility model relates to a straightening comb technical field, concretely is an easy to clean straightening comb, the utility model discloses a handle, the surface fixedly connected with straightening comb body of handle, the inner fixed surface of straightening comb body is connected with tooth comb, the inner surface of straightening comb body is equipped with cleaning device, the cleaning device includes the isolating plate, the inner surface sliding connection of isolating plate and straightening comb body, the arc surface of tooth comb and isolating plate sliding connection, the surface fixedly connected with two connecting plates of isolating plate, the surface fixedly connected with edge board of two connecting plates. The problem that the oil, dirt, dust on the hair can continue to adhere on the circuit connecting point of straightening comb body because of long time not cleaning, long time accumulation can increase resistance, lead to more heat when the current passes, this not only can waste electric energy, but also can further accelerate the aging of circuit element, the serious problem of circuit failure.

The invention discloses a household 5G dual-frequency router convenient to disassemble, maintain and clean, and particularly relates to the router field, the household 5G dual-frequency router comprises a middle frame, the 5G dual-frequency router is arranged in the middle frame, the upper end face and the lower end face of the middle frame are covered with an upper shell and a lower shell respectively, and the upper shell, the middle frame and the upper shell form a protection cover for protecting the 5G dual-frequency router. According to the 5G dual-frequency router, the upper shell and the middle frame as well as the middle frame and the lower shell are mounted and dismounted through the arranged self-locking assembly and the elasticity of the upper shell, the mounting and dismounting steps are few, the mounting and dismounting difficulty of maintenance personnel is reduced, then the 5G dual-frequency router is positioned through the counter-acting force generated by the elasticity generated when the self-locking assembly is compressed, and the service life of the 5G dual-frequency router is prolonged. And when the household 5G dual-frequency router is strongly impacted, the internal vibration of the household 5G dual-frequency router is reduced, the 5G dual-frequency router is prevented from being damaged to influence signal transmission, and the service life of the household 5G dual-frequency router is prolonged.

The freeze dryer vacuum pump comprises an end cover body, a pump body assembly and a motor assembly which are in transmission connection are arranged at the two ends of the end cover body respectively, an oil tank shell in sealing connection with the end cover body is further arranged on the end cover body, and the oil tank shell communicates with an inner cavity of the pump body assembly; an exhaust assembly connected with the oil tank shell in a sealed mode is arranged at the top of the oil tank shell and comprises a valve block capable of moving up and down. The end cover body is provided with a gas ballast assembly used for controlling the communication state of a flow channel in the end cover body and the pump body assembly, and the gas ballast assembly comprises a rotary knob body capable of rotating relative to the end cover body. The gas ballast assembly is matched with the exhaust assembly for exhausting, the gas ballast assembly is good in sealing performance and stable in structure, the sealing and filtering effects of the exhaust assembly are good, and the overall exhaust effect is greatly improved.

This invention discloses a control valve, including a valve body, a valve core, and a sealing component. The control valve includes at least five channels, and the side wall has at least five connecting ports that communicate with the valve cavity. Each connecting port includes a first connecting port, which is arranged along the height and circumference of the side wall. Two first connecting ports are arranged along the circumference of the side wall. The sealing component includes a sealing body located between the valve core and the side wall. The sealing body has through holes, the number of which is the same as the number of first connecting ports and they are connected. The through holes are arranged along the height and circumference of the sealing body. Two through holes are arranged along the circumference of the sealing body. The inner surface of the sealing body is an arc surface, and the central angle corresponding to the arc surface of the sealing body is greater than 100 degrees and less than or equal to 180 degrees. This control valve not only enables fluid control of multiple flow paths but also reduces the manufacturing difficulty of the sealing component.

The utility model relates to the technical field of carbonization furnace feeding, and discloses a carbonization furnace push rod sealing device which comprises a push rod sealing sleeve, two floating assemblies are arranged at the right end of the push rod sealing sleeve, and the floating assemblies are used for guaranteeing that sealing materials are intact. According to the carbonization furnace push rod sealing device, the floating assembly is installed, a floating flange and a floating sleeve on the inner side can be limited through a flange limiting disc and a combined disc, and a certain movable gap exists between the floating flange and the floating sleeve on the inner side of the flange limiting disc and the inner side of the combined disc; by means of the mode, original fixed cylinder body sealing is changed into floating cylinder body sealing, sealing materials are changed into piston ring and fluororubber sealing ring composite sealing from original packing, the service life of the sealing materials is prolonged through engine oil lubrication, and therefore when the push rod of the cylinder body is in a deformation state or generates flexibility, the sealing performance of the cylinder body is improved. And the sealing material can be ensured to be intact so as to achieve a thorough sealing effect.

The utility model relates to converter oxygen lance sealing technical field, the utility model discloses an embodiment provides a kind of self-produced steam sealing device at converter oxygen lance mouth, including converter oxygen lance, the circumferential surface of the converter oxygen lance is fixedly connected with sealing plug, the bottom of the sealing plug is fixedly connected with gas storage seat, the inside of the gas storage seat is provided with steam uniform distribution mechanism.In the utility model, when needing to seal converter oxygen lance, staff sends steam to the inside of gas storage seat, starts motor drive shaft rotation, drives gear A and gear B rotation, and then drives support shaft and fan blade rotation, uniformly blows steam into converter oxygen lance around to form high pressure barrier, ensure the sealing of the contact place of oxygen lance and furnace mouth, when furnace overhauls, add nitrogen by nitrogen gas pipeline, steam and nitrogen are used alternately, reduce steelmaking energy consumption, by the above technical scheme, the technical problem that steam cannot be uniformly sealed to converter oxygen lance mouth in relevant technology is solved.

The utility model provides a kind of low-speed marine diesel engine emission test sampling probe with cleaning core, it is related to low-speed marine diesel engine emission test sampling probe technical field, including sampling probe and built-in cleaning core;The cleaning core is composed of pipeline, high-temperature-resistant silica gel gasket and spray head, wherein, the inlet of pipeline is connected with cleaning agent source, and outlet is fixedly connected with spray head;High-temperature-resistant silica gel gasket is interferencely covered on pipeline, and its outer diameter is greater than the inside diameter of sampling probe, to realize dynamic sealing and isolate high-temperature flue gas;Spray head is provided with 8 evenly distributed small holes, for directional spraying cleaning agent;The cleaning core can rotate and move axially, cover all inner wall regions of sampling probe.The utility model is additionally provided with rotatable and axially movable cleaning core inside low-speed marine diesel engine emission test sampling probe, to realize non-disassembly type comprehensive cleaning inner wall, save maintenance time, completely remove adhered pollutants, and guarantee that emission detection error rate is ≤±1%.

The utility model discloses a chlorine liquefier tube head welding structure which comprises a tube plate and a plurality of heat exchange tubes, and the heat exchange tubes are arranged on the tube plate in a penetrating mode. The length of the part, extending out of the tube plate, of the tube head of the heat exchange tube is 0-1mm; the tube plate is provided with a groove used for being connected with a heat exchange tube, and the angle of the groove ranges from 45 degrees to 60 degrees. The heat exchange tube is in interference fit with the hole wall of the tube plate through expanded connection, and the groove is filled with a welding seam to fixedly connect the heat exchange tube with the tube plate. According to the chlorine liquefier pipe head welding structure, the welding quality of the chlorine liquefier pipe head can be improved, the connection reliability is enhanced, and leakage is effectively prevented.

The utility model relates to the technical field of pipe fitting connection, and discloses a metal thin-wall pipe connecting pipe fitting structure which comprises an inner ring clamp double-sealing pipe fitting, the outer surface of the inner ring clamp double-sealing pipe fitting is movably connected with an outer ring clamp double-sealing pipe fitting in a sleeved mode, and the left side of the outer surface of the inner ring clamp double-sealing pipe fitting is provided with an external thread. The inner wall of the outer ring clamp double-sealing pipe fitting is provided with internal threads, the inner ring clamp double-sealing pipe fitting and the outer ring clamp double-sealing pipe fitting are in threaded connection through the external threads and the internal threads, and an O-shaped sealing ring and a sealing rubber ring are movably arranged between the inner ring clamp double-sealing pipe fitting and the outer ring clamp double-sealing pipe fitting in a sleeving mode. According to the pipeline connecting device, through multiple sealing and reinforcing design, the double effects of physical sealing and mechanical locking are achieved, multi-level protection is formed, the medium leakage risk under the complex working conditions of high pressure, vibration and the like is effectively resisted, and the whole set of connecting mode is combined with the high strength of threaded connection and the high reliability of elastic sealing.

This invention discloses an automatic detection device and method for the tensile strength of protective films, relating to the field of membrane tensile strength testing technology. It includes a tensile testing machine comprising a rigid frame, a movable crossbeam, and a bidirectional clamp, as well as an air permeability testing mechanism. The air permeability testing mechanism includes an air blowing component and an airflow detection component symmetrically arranged on both sides of the membrane sample, used to simultaneously perform air permeability testing under tensile conditions. This invention addresses the problem in existing technologies where waterproof and breathable membranes simultaneously handle dynamic tensile stress and air permeability requirements in practical applications. Traditional independent testing fails to quantify the correlation between tensile deformation and air permeability, leading to static data overestimating the material's true performance under actual working conditions and increasing the risk of structural failure. This invention offers advantages such as achieving simultaneous dynamic detection of air permeability during the tensile process through integrated design, and quantifying the material performance degradation law under actual working conditions.

The utility model relates to a respiratory protection mask provided with a sealing self-checking device, and belongs to the technical field of respiratory protection sealing detection of protection masks. The sealing self-checking device is composed of a mask body, an elastic key, an inspiration valve seat channel, an inspiration valve, a filtering element connector, an air channel and a locking ring, the elastic key made of silica gel or rubber materials is adopted to press and block an air inlet channel, and due to the fact that the elastic key is soft, the plane contact sealing effect of the elastic key and the inspiration valve seat channel is good after the elastic key is pressed; after pressing, the fingers are released to restore the original shape, and the operation is convenient; the device can be suitable for breathing protection masks such as full face masks, half masks, single-filtering-element connectors and double-filtering-element connectors. The defects that in the prior art, detection illusion is easily caused by a self-detection method of blocking an air inlet by hands, and an airtight detection cover plate needs to be closed by driving a hinge to rotate through a pull rod in a manner of adopting the airtight detection cover plate, operation is inconvenient, a user feels oppressed when closing the airtight detection cover plate, and the airtight detection cover plate needs to be pressed down again to return are overcome.

The utility model provides an intravascular thrombus aspiration catheter. The intravascular thrombus aspiration catheter comprises an internal flow channel, a far-end aspiration catheter section, a middle catheter section and a near-end driving catheter section, and the internal flow channel is sequentially communicated with the far-end aspiration catheter section, the middle catheter section and the near-end driving catheter section from the far end of the intravascular thrombus aspiration catheter to the near end of the intravascular thrombus aspiration catheter. Wherein the intravascular thrombus aspiration catheter further comprises an aspiration inlet and an outflow window, and the internal flow channel is communicated with the aspiration inlet and the outflow window; a filter screen is arranged in an inner flow channel of the middle guide pipe section and is positioned between the suction inlet and the outflow window; at least one of the far-end suction catheter section, the middle catheter section and the near-end driving catheter section is detachably connected, and the suction inlet is formed in the far-end suction catheter section. According to the intravascular thrombus aspiration catheter provided by the invention, due to the segmented detachable design, the use convenience is facilitated.

The utility model discloses a wind power generation fan blade pneumatic simulation experiment table, which belongs to the technical field of wind power generation fan blade pneumatic simulation, and is characterized by comprising a simulation box, a wind sand simulation assembly is arranged in the simulation box, and a sealing assembly is arranged on the outer side of the simulation box. The wind-sand simulation assembly comprises a supporting seat fixedly connected into the simulation box, and the problems that when an existing wind power generation fan blade pneumatic simulation experiment table conducts a wind-sand simulation experiment, an automatic sand cleaning structure is generally lacked, accumulated sand generated in the experiment process is not convenient to continuously remove, and the experiment efficiency is high can be solved. The existing wind power generation fan blade pneumatic simulation experiment table generally adopts a bolt type or rigid buckle type sealing structure, so that the sealing and the opening of the simulation box are inconvenient to quickly complete, the experiment preparation process is tedious, the operation is simple, and the cost is low. And the experiment efficiency is influenced.

The utility model provides a high elasticity rubber and plastic hose relates to rubber hose technical field, including hose body, the hose body is fixed with the joint subassembly, the joint subassembly includes lining sleeve and two sealing half hoop, the lining sleeve circumference is provided with a plurality of axial slotted hole, and the two sealing half hoop is provided with the axial slotted hole. An elastic locking piece extending downwards is integrally formed on the upper side wall of the axial groove hole, a plurality of pressure cylinder bodies are arranged on the lining sleeve, piston rods are connected into the pressure cylinder bodies, frustum sleeves are fixed to the outer walls of the piston rods, and the frustum sleeves abut against the middles of the elastic locking piece in a sliding mode. A sealing ring table is arranged on the upper side of the outer wall of the lining sleeve, a sealing ring gasket is arranged in a sealing ring groove, and a locking bolt is connected between the two sealing half hoops. After the lining sleeve is pressed, the frustum sleeve is driven by the piston rod, so that the elastic locking plate expands outwards and is locked on the inner wall of the hose body.

The invention discloses a benchmark protection device, and relates to the technical field of benchmark protection, the benchmark protection device comprises a shell assembly, the shell assembly comprises a protection shell, the lower end of the protection shell is provided with a protection shell gasket, the upper end of the protection shell is provided with a cover plate, and a cover plate gasket is arranged between the protection shell and the cover plate; the opening and closing assembly comprises a connecting plate, a first rotating rod, a second rotating rod, a spring, a clamping piece, a pressing piece and a limiting piece; the box staff fixing assembly comprises a benchmark, a ball bearing and a box staff rotating bin. The beneficial effects of the invention are that through the cooperation of the cover plate and the opening and closing assembly, the protection shell is closed and opened, under the action of the clamping piece, the cover plate is ensured to be closed tightly, and the cover plate is kept open stably without affecting the measurement under the action of the internal force of the opening and closing assembly during opening; the benchmark is protected through the protective shell, the benchmark is prevented from being corroded and damaged by rainwater, dust and the like, durability of the benchmark can be better guaranteed, the telemeter rod fixing assembly is matched, a telemeter rod can be better fixed during measurement, manpower is saved, and meanwhile the measurement accuracy can be improved.

The utility model relates to the technical field of drainage pipelines, and discloses a large-diameter leakproof reinforced concrete drainage pipe which comprises a cylindrical pipeline, a fixing rod is fixedly connected to the middle of the inner wall of the cylindrical pipeline, a first fixing ring is fixedly connected to the bottom of the fixing rod, and a first rotating shaft is fixedly connected to the middle of the outer wall of the first fixing ring. A first fixing block is fixedly connected to the bottom of the first rotating shaft, paddles are fixedly connected to the outer wall of the first fixing block, a second rotating shaft is fixedly connected to the middle of the inner wall of the first fixing ring, a water baffle is fixedly connected to the bottom end of the second rotating shaft, and a water hammer groove is formed in the upper side of the outer wall of the water baffle. The top end of the second rotating shaft is fixedly connected with a second fixing block. According to the utility model, the water flow flowing into the pipeline is accelerated through the paddle, then the accelerated water flow impacts the outer wall of the water baffle, and the water hammer groove is formed in the outer wall of the water baffle, so that the stress effect of the water baffle is greater.

The utility model provides a laundry dryer duct assembly relates to laundry dryer duct assembly technical field, the utility model discloses a fan, the side of fan is provided with air duct, the side fixedly connected with motor of fan, the inside of fan is provided with impeller, the impeller is by motor drive, the air outlet fixedly connected with rectangular plate of fan, the side of fan is provided with connecting device, connecting device includes setting up rectangular groove in the side of rectangular plate, the inside fixedly connected with snap ring of rectangular groove, the inside of rectangular groove is provided with lug, one end of lug is fixedly connected with air duct, the side fixedly connected with air bag of rectangular groove, air bag is seal ring, the side fixedly connected with magnetic plate of rectangular plate, the side fixedly connected with iron sheet of air duct, the side screw thread connection of rectangular plate has bolt, the utility model solves the problem that fan and air duct are inconvenient to install and connect in the inside of washing machine due to narrow.

The utility model relates to cytosine preparation condensing technical field discloses a kind of condensing device for cytosine preparation, including condensing tube, the condensing tube side wall is fixedly connected with outlet pipe, the condensing tube side wall is fixedly connected with inlet pipe, the condensing tube bottom is fixedly connected with flask, the condensing tube bottom is provided with circulating assembly, the condensing tube top is provided with check assembly;The circulating assembly includes connecting pipe one, the connecting pipe one top end is fixedly connected in the inlet pipe bottom, the condensing tube bottom is fixedly connected with flask, the flask outer wall is provided with water tank, the water tank side wall is provided with water pump.In the utility model, by starting water pump, it extracts condensate from low water tank, is sent to inlet pipe through connecting pipe one, and then flows into condensing tube, under the drive of pressure, condensate flows in condensing tube, absorbs steam heat constantly, can realize the effect of condensate circulation, improves condensing efficiency.

The utility model relates to heat exchanger technical field discloses a kind of heat exchangers with heat insulation, including shell, the front side top of shell is fixedly connected with liquid inlet pipe, the front side bottom of shell is fixedly connected with liquid outlet pipe, the right side of liquid inlet pipe and liquid outlet pipe is uniformly provided with connecting mechanism, the bottom of shell is provided with mounting mechanism, and the mounting mechanism is used to install shell, the connecting mechanism includes two heat insulation plates, the left side of two heat insulation plates is respectively slidably connected with the right side of liquid inlet pipe and liquid outlet pipe, the left end of two heat insulation plates is fixedly connected with connecting block on upside and downside, and the side of multiple connecting blocks far away is uniformly provided with circular groove. In the utility model, by pushing fixed plate along stand plate sliding to remove the limiting of pull rod, after loosening pull rod, reset spring pushes limiting block to be clamped into fixed slot, the sealing of pipeline connection is realized, reduces pipeline and outside heat exchange, and the heat exchange efficiency is ensured.

This utility model relates to the field of perfume dispensing technology and discloses a leak-proof and sealed portable perfume dispensing bottle, including a sealing main component, a protective cap, a protective plastic shell, and a glass bottle. The sealing main component has a suction mechanism fixedly installed inside. This leak-proof and sealed portable perfume dispensing bottle achieves unidirectional liquid flow control and forms a double leak-proof structure through the suction mechanism built into the sealing main component, which works in conjunction with the nozzle and suction tube. The rotating sleeve design of the protective cap and nozzle isolates external contamination, and the combination of a limiting top strip and an anti-slip ring enhances the reliability of transportation and storage. The protective plastic shell wraps around the glass bottle and forms a non-contact buffer layer through shock-absorbing ribs. Combined with the internal gap design, it adapts to temperature changes, effectively preventing breakage and improving impact resistance. The inlet at the bottom of the glass bottle forms a double seal with a threaded sealing rubber ring and a sealing bottom plug, and with the help of a filter plate to intercept impurities, it achieves convenient dispensing and long-term sealing for storage.