53results about How to "Improve assembly convenience" patented technology

The utility model relates to the technical field of clothes processing, and provides clothes processing equipment which comprises a clothes containing cylinder and lifting ribs, and the clothes containing cylinder is provided with a clothes containing cavity; the lifting rib is arranged in the clothes containing cavity, and a communication channel extending in the length direction is formed in the lifting rib. The size of the communication channel in the length direction can be large, so that electric appliance elements or other structural parts can be placed conveniently. The communication channel can provide an installation position for an electrical appliance element or other structural parts, the electrical appliance element or other structural parts located in the communication channel can move along with the clothes containing cylinder, and the lifting rib can be used for stirring clothes in the clothes containing cavity to move and can also be reused to provide an installation space for the electrical appliance element. The electrical components in the communication channel are protected from being in contact with the clothes to a certain extent, and the assembling convenience of the electrical components can be improved.

The utility model discloses a dust collector automatic dust collection charging seat with a display screen, which can display the operation condition of equipment in real time and improve the visualization of the equipment through the design of the display screen, so that corresponding parts can be overhauled and adjusted in time, and the efficient and stable operation and the convenience of operation and use of the dust collection charging seat are ensured. The charging structure is provided with the charging frame with the clamping opening and the conical guide groove, the positioning stability during charging of the dust collector can be improved, the charging assembly avoids the problem of electric shock caused by mistaken touch of the conducting strip through the designed linkage piece and the micro switch at the corresponding position, and the use safety of the charging assembly is improved; and the top of the dust collection structure is laterally assembled and matched with a bottom positioning structure which is embedded, assembled and clamped with an upper positioning ring and a lower positioning ring, and an air outlet filter piece embedded assembly structure provided with a pull rod, so that the convenience of disassembly and assembly operation of the dust collection filter structure is improved. Compared with a common dust collection charging seat, the dust collection charging seat can achieve the functions of efficient dust collection, safe charging and convenient disassembly, assembly and maintenance.

The utility model discloses an adjustable photovoltaic support, which comprises a fixed seat and a sliding assembly, the sliding assembly comprises a slide rail, an adjusting seat and a positioning bolt, the slide rail is fixed on the top surface of the fixed seat through a preformed groove, the top of the adjusting seat is provided with a concave support, and the top of the concave support is provided with an adjusting assembly; and the adjusting assembly comprises a supporting cylinder, a motor, supporting frames and fixing bolts, the supporting frames are connected to the top of the supporting cylinder in a sleeving mode, and C-shaped steel is fixed to the tops of the supporting frames through bolts. According to the support fixing structure, spacing adjustment can be conveniently carried out according to the widths of different photovoltaic panels, and the height can be adjusted, so that personnel can conveniently carry out photovoltaic panel installation operation.

The utility model discloses a table type water purifying and drinking machine which comprises a machine body and a raw water tank installed on the machine body, the raw water tank is provided with a connecting plug with a raw water outlet, the machine body is internally provided with a water path switching assembly used for bearing and inserting the connecting plug, and the water path switching assembly comprises a bayonet socket, a one-way valve, a cover cap and a sealing body. The bayonet socket is provided with a water passing cavity and a communication port which is communicated with the water passing cavity and is used for being communicated with a water pump, the cover cap covers and limits the one-way valve in the water passing cavity, the connecting plug is inserted into the cover cap, the cover cap is provided with a water passing port which is used for being communicated with the raw water outlet and the one-way valve, and the water passing port is communicated with the water passing cavity. The sealing body forms a seal between the connecting plug and the cap. The waterway switching assembly of the table type water purifying and drinking machine is few in overall accessories, simple in structure and convenient to install, and has good sealing performance after being inserted and matched with the inserting head of the raw water tank, and the risk of water leakage is greatly reduced.

The utility model discloses an electrodeless pull rod for a luggage, relates to luggage accessories, aims to solve the problem that the telescopic length of a pull rod cannot be adjusted, and adopts the technical scheme that the electrodeless pull rod for the luggage comprises two rod piece groups which are arranged in parallel, and each rod piece group comprises a first rod piece, a second rod piece and a third rod piece, a grab handle is arranged between the top ends of the two third rod pieces and provided with a button, a stepless locking assembly is arranged between the second rod piece and the third rod pieces and comprises a rack, a swing arm and a driving piece, the swing arm is provided with embedding teeth embedded with any tooth opening of the rack, and a cylinder is arranged between the driving piece and the button for transmission connection. According to the stepless pull rod for the luggage, on the premise that a traditional operation mode is not changed, stepless adjustment of the telescopic length between the second rod piece and the third rod piece is achieved, and more length choices are provided for a user.

The invention discloses an optical fiber adapter which comprises a shell, a connecting sleeve, a shielding door and a reset part, according to the technical scheme, the shielding door is adopted to shield a first port of the shell, and the shielding door has a closing trend under the action of the reset part, so that the shielding door is always in a closed state when no external force is applied, on one hand, the shielding door is not damaged, and on the other hand, the shielding door is not damaged. On one hand, high-intensity infrared light beams can be effectively prevented from leaking to hurt human eyes, on the other hand, dust can be effectively prevented from entering the adapter, and the optical transmission stability after optical fiber connection is guaranteed. Moreover, when the optical fiber connector is in butt joint with the first port, the optical fiber connector can directly abut against the shielding door and is inserted into the first port, in the process, the first port is always blocked, and infrared beams can also be prevented from leaking out, so that an operator does not need to wear a protective tool in the butt joint process, and the assembly convenience is greatly improved.

This invention discloses an automatic dust collection and charging base for vacuum cleaners with a display screen. The display screen allows for real-time monitoring of the device's operation, enhancing visibility and facilitating timely component inspection and adjustment. This ensures efficient and stable operation and ease of use. The charging structure features a charging rack with a clamp and conical guide groove, improving positioning stability during charging. Designed linkages and micro-switches in the charging components prevent accidental contact with conductive plates, enhancing safety. The dust collection structure includes a bottom positioning structure with upper and lower positioning rings that engage and lock together, and an embedded exhaust filter with a pull rod, improving ease of assembly and disassembly. Compared to common dust collection and charging bases, this design achieves efficient dust collection, safe charging, and convenient assembly and maintenance.

This invention discloses a welding clamping mechanism for metal parts of an elevator car, belonging to the field of elevator car metal part welding technology. It comprises a clamping mechanism one and a clamping mechanism two assembled on the outer surface side of the clamping mechanism one, with a welding robot arm mounted on the rear side of the outer surface of the clamping mechanism one. It includes a support frame installed at the middle of the upper surface of the clamping mechanism one, with a base plate connected to the upper surface of the support frame. This elevator car metal part welding clamping mechanism, with clamping mechanism one and clamping mechanism two assembled sequentially, facilitates alternating welding, saving material loading time. Side clamps, positioning components one and two limit and compress side rods one and two, improving the stability of the base plate during welding and preventing displacement. In conjunction with a heat-absorbing mechanism on the support frame, it performs heat absorption and cooling treatment based on the weld point position of the base plate, and works synchronously with a gas cooling system that can be linked.

The tail clamp connector comprises a first shell and a second shell which can be opened or closed in a turnover mode, a flexible connecting part enabling the first shell and the second shell to form turnover connection is arranged between the side faces of one sides of the first shell and the second shell, and a fixing structure is arranged between the other side faces of the first shell and the second shell. The flexible connecting part is integrally connected with the first shell and the second shell, one end of the first shell and one end of the second shell are folded to form a first interface in adaptive connection with the corrugated pipe, and the other end of the first shell and the other end of the second shell are folded to form a second interface in adaptive connection with the connector; the wire harness between the corrugated pipe and the connector is wrapped by the tail clamp joint, the wire harness is protected to prevent a circuit from being exposed outside to cause friction and scratch accidents, and the flexible belt serving as a deformable part has the advantages of good connection strength, compact structure, no need of assembly and high cost performance. The tail clamp connector adopting the structure is more convenient to assemble, and the production cost is greatly reduced.

The garbage can convenient to use comprises a can body with a waste space, a first opening is formed in the top of the can body, and a can cover is arranged at the first opening; the can cover comprises an assembling part with a second opening, a cover plate arranged at the second opening, a driving device for controlling the cover plate to open and close and a control panel for controlling the driving device to work; the control panels are detachably arranged at different ends of the assembling part; by means of the detachable design of the control panel, a user can arrange the control panel at the position most suitable for himself or herself according to the using habit and the requirement for space layout, space is saved, the garbage can better conforms to the ergonomic principle, the user can conveniently operate the control panel without bending down or adjusting the standing position, and the user experience is improved. Therefore, the use convenience and comfort are greatly improved.

The invention relates to the technical field of transfer printing equipment, in particular to an aluminum alloy printing and transferring machine table for printing and transferring equipment, which comprises a feeding assembly arranged at the feeding end of a table board assembly and a discharging assembly arranged at the discharging end of the table board assembly, and a printing and transferring rack is made of an aluminum alloy material, so that the mass of the printing and transferring rack can be reduced while the use strength of the printing and transferring rack is ensured, and the printing and transferring efficiency is improved. The accessory positioning frame extending towards the two ends of the printing and moving rack is arranged at the bottom of the printing and moving rack, and the feeding assembly and the discharging assembly can be connected through the accessory positioning frame, so that the feeding assembly and the discharging assembly have better relevance with the printing and moving table top, the operation stability of the whole equipment is improved, and the printing and moving efficiency is improved. And guide wheels are arranged at the bottoms of the accessory positioning frame and the printing and moving rack, so that the accessory positioning frame and the printing and moving rack can be conveniently moved.

The utility model provides a camera shooting piece and a camera shooting device, and relates to the field of camera shooting equipment, the camera shooting piece comprises a rear shell, the interior of the rear shell is provided with a containing cavity, the rear shell is provided with a first end face, the first end face is provided with an opening of the containing cavity, and the first end face is recessed inwards along the depth direction of the containing cavity to form a mounting groove; the front shell is detachably connected with the rear shell and covers the opening; wherein the front shell comprises a front shell body and an operation part, the operation part protrudes out of the front shell body, and when the front shell and the rear shell are in an assembled state, all parts of the operation part are located in the mounting groove. The camera device has higher assembling convenience. The utility model also provides a camera device using the camera piece.

The invention relates to the technical field of rotary kilns, in particular to a rotary kiln for cement production, which comprises a base and a kiln body arranged on the base, and a kiln head and a kiln tail are respectively arranged at two ends of the kiln body; prefabricated assemblies are arranged in the kiln head and the kiln tail; the prefabricated assembly comprises heat insulation bottom plates laid on the inner wall of the kiln head and the inner wall of the kiln tail, the kiln head and the kiln tail are connected and assembled through the prefabricated parts such as the heat insulation bottom plates and the heat insulation top plates, and better heat preservation and fireproof effects are achieved in a double-layer heat insulation mode; the problems that the temperature is high, heat dissipation is fast, and energy consumption of products is large in the calcining process of existing castable are solved, the heat insulation bottom plate can be tightly attached and connected in the transverse direction and the longitudinal direction by means of a positioning structure and a fixing structure in the assembling process, and therefore the assembling convenience of prefabricated parts of the type is improved; and a connecting gap of the inner side heat insulation bottom plate can be eliminated, and the heat preservation performance and the durability are guaranteed.

The invention discloses a gearbox gear shifting mechanism and a vehicle. The gearbox gear shifting mechanism comprises a top cover, a gear shifting drum and a plurality of sets of shifting forks. The gear shifting drum is rotationally installed in the top cover, multiple sets of gear shifting channels are formed in the gear shifting drum at intervals in the axial direction of the gear shifting drum, the gear shifting channels of each set are provided with interlocking sections and multiple gear sections which are sequentially communicated in the circumferential direction of the gear shifting drum, and the interlocking sections and the multiple gear sections of the same set are sequentially arranged in the axial direction of the gear shifting drum. The projections of the multiple gear sections of each group in the axial direction of the gear shifting drum fall on the interlocking section of any group; the multiple sets of shifting forks are matched with the multiple sets of gear shifting channels correspondingly, all the shifting forks can move in the axial direction of the gear shifting drum and are provided with transmission parts, and the transmission parts can slide between the interlocking sections and the gear sections which are matched with each other. According to the scheme, a plurality of shifting forks can be driven by one shifting drum to independently shift gears, so that the cost is saved, and the space occupied by the mechanism is reduced; and meanwhile, interlocking of multiple sets of common-drum shifting forks can be achieved, independent gear shifting of each shifting fork is guaranteed, reliability is good, and assembling convenience is improved.

The present application relates to a kind of operating handle and ultrasonic diagnostic equipment.The operating handle is used to operate the control component of ultrasonic diagnostic equipment, it includes handle body.Handle body is detachably connected on ultrasonic diagnostic equipment.Control component is equipped on handle body, when handle body is connected with ultrasonic diagnostic equipment, control component can be connected with control component.The part of control component is exposed to the surface of handle body and forms operation part, when user holds handle body, operation part can be triggered, so that control component can drive control component to act.By integrating control component on the handle body of operating handle, so that operating handle becomes independent module.Handle body is installed to ultrasonic diagnostic equipment, and control component can be connected with control component simultaneously, so that the locking and unlocking function of lifting, rotating etc.of control panel of ultrasonic diagnostic equipment is realized simultaneously by control component while realizing the inherent function of handle.

The present application relates to the technical field of building structure assembly, and discloses a kind of energy-saving steel-wood composite structure assembly construction method, comprising the following steps: S1, respectively in wood component and steel connecting piece are provided with wood positioning hole and steel positioning hole, and at least one reference hole is determined on wood component and steel connecting piece by positioning hole, and through hole is provided on heat insulation pad;S2, heat insulation pad is arranged between the connecting end surface of wood component and steel connecting piece;And heat insulation sleeve is inserted into the hole channel formed by wood positioning hole of wood component and steel positioning hole of steel connecting piece, and heat insulation sleeve is used as the temporary limiting pin of steel connecting piece and heat insulation pad positioning;S3, heat insulation sleeve is inserted into the remaining hole channel, and glue positioning is positioned between heat insulation sleeve and wood positioning hole on wood component;S4, through bolt is installed in heat insulation sleeve. The combination positioning between steel-wood composite structure can be quickly completed, and the node thermal bridge in combination positioning can be avoided.

The invention provides a multi-beam traveling wave tube electron gun and an assembling method, and the multi-beam traveling wave tube electron gun comprises a first housing assembly which is of a cylindrical structure, and the upper end of the first housing assembly is provided with a first welding edge used for connecting an anode; the cathode heat shield assembly comprises a plurality of cathode cylinders, and cathode cakes are arranged on the cathode cylinders; the focusing electrode assembly comprises a focusing electrode supporting piece which is arranged in the first shell assembly; the focusing electrode body is arranged on the focusing electrode supporting piece, a plurality of focusing electrodes are arranged on the focusing electrode body, and the plurality of focusing electrodes are arranged corresponding to the plurality of cathode cakes; the anode assembly comprises an anode body provided with a plurality of anodes corresponding to the focusing electrodes; the second welding edge is arranged on the anode body; the L-shaped connecting piece comprises a first side face and a second side face, the second side face is annular and extends outwards in the radial direction from the top of the first side face; the first side face is used for being connected with the first welding edge, and the second welding edge is used for being connected with the second side face and used for compensating assembly errors when the focusing electrode and the anode are assembled.

The utility model provides a self-locking type miniature cable lock which comprises a lock shell and a cable, one end of the cable is fixed on the lock shell, the lock shell is further provided with an insertion hole for the non-fixed end of the cable to be inserted, a one-way locking mechanism located on the opening path of the insertion hole is arranged in the lock shell, and the non-fixed end of the cable is inserted in the one-way locking mechanism through the insertion hole. The one-way locking mechanism is a tension head, a tension tube of the tension head faces the insertion end of the insertion hole, and the cable is inserted into the tension tube through the insertion hole and is locked and stopped by the tension head; a lock cylinder and a spring bolt are arranged in the lock shell, a control sliding block is further arranged in the lock shell, the sliding freedom degree of the control sliding block is controlled through the spring bolt, and the sliding direction of the control sliding block is the same as the unlocking direction of the tension tube or the tension head and is matched with one of the unlocking direction of the tension tube or the tension head. The locking device has the advantages of being simple in structure, convenient to assemble, capable of effectively reducing production cost and reliable in locking.

This utility model discloses a rotatable, ultra-large segmented glass screen design structure, comprising: a frame including vertical ribs, horizontal guides, and a base; the horizontal guides are annular structures, inserted into and positioned at the opening of the vertical ribs, with a first ball bearing disposed on the inner side of the opening; a first guide groove is provided on the end faces of the horizontal guides and the base, with a second ball bearing disposed within the first guide groove; the base is positioned at the upper and lower ends of the vertical ribs and rotatably embedded in a fourth guide groove of the building base, with a third ball bearing disposed within the fourth guide groove, the third ball bearing abutting against the surface of the base; and a glass panel with a circular arc or annular cross-section, slidably inserted into the opening, its upper and lower edges slidably disposed within opposing first guide grooves, with the first and second ball bearings abutting against the surface of the glass panel. This utility model can solve the problems of existing glass screens lacking adjustment function, insufficient flexibility in use, and difficulty in adapting to the requirements of large-scale deployment.

The utility model relates to a road and bridge concrete guardrail construction formwork which comprises a box girder, a formwork piece is arranged at the upper end of the box girder, and a guardrail base is arranged on the inner side of the formwork piece. The formwork piece comprises a bottom formwork, one end of the bottom formwork is fixedly connected with the upper end of the box girder, side formworks are connected to one side and the other side of the bottom formwork in a sliding mode, and fixing bolts are fixedly installed between the bottom formwork and the side formworks. According to the road and bridge concrete guardrail construction formwork, due to the fact that the side formwork body is composed of the connecting formwork bodies, the connecting formwork bodies can be connected end to end in an inserted mode and fixed through the fixing screws, extension adjustment can be conducted according to concrete guardrails of different heights, and the bottom formwork body and the top formwork body can be adjusted according to the width of the concrete guardrails. And after the bottom formwork is fixed, the side formworks can be fixed through the fixing bolts, then pouring is conducted, the top formwork is fixed through the screws and the nuts, and the assembling convenience of the whole formwork piece is improved.

The invention provides a shell structure, an electronic endoscope image processor and an assembling method, the shell structure comprises a lower shell, an upper shell and a panel, the lower shell comprises a bottom plate and first side plates connected to the two sides of the bottom plate in the width direction and perpendicular to the bottom plate, and the tops of the inner side faces of the first side plates are connected with bent plates; the panels are connected to the two ends of the lower shell in the length direction, and the end faces of the panel assembling parts make contact with the end faces of the first side plates and the end faces of the bent plates. The upper shell comprises a top plate and second side plates connected to the two sides of the top plate in the width direction and perpendicular to the top plate. The second side plate of the upper shell is in sliding fit with the assembling part of the panel in the height direction, after the upper shell slides in place, the bottom face of the second side plate makes contact with the top face of the first side plate, and the inner side face of the second side plate makes contact with the outer side face of the bent plate. On one hand, the shell structure has the advantage of being simple in structure, on the other hand, assembling among shell parts is easy to align, and rapid assembling of the shell can be achieved.

The utility model relates to an anti-pinch strip assembly structure for a composite material tail door. The anti-pinch strip assembly structure comprises an anti-pinch strip and an assembly part, the anti-pinch strip comprises an anti-pinch strip body and a plurality of mounting strips arranged on one side of the anti-pinch strip body at intervals. The anti-pinch strip body is of an elastic hollow structure. The section of the mounting strip is in a hollow arrow shape; the assembly part comprises an assembly plate and a plurality of assembly holes formed in the assembly plate at intervals; wherein the mounting strip can be clamped in the assembly hole in the arrow direction, so that the anti-pinch strip and the assembly part are connected and mounted. Compared with the prior art, the anti-pinch strip has the advantages that the anti-pinch strip body is designed to be of the elastic hollow structure to serve as a tail door anti-pinch function structure, the elastic buffering effect can be achieved when an obstacle is clamped in the closing process of the automobile tail door, and damage to the obstacle or the automobile tail door is avoided. The mounting strip is of a hollow arrow-shaped structure and can be compressed and extruded into a corresponding assembling hole of the composite material inner plate, and assembling convenience is improved.

The utility model discloses a liquid leakage detection sheet and a liquid cooling device, which comprises a substrate, a first liquid leakage detection lead and a second liquid leakage detection lead, the appearance of the substrate in the overlook projection direction is matched with the appearance of the inner bottom surface of a liquid collecting tank in the overlook projection direction, the substrate can be laid on the inner bottom surface of the liquid collecting tank, and the first liquid leakage detection lead and the second liquid leakage detection lead are arranged on the substrate. And the first liquid leakage detection lead and the second liquid leakage detection lead are distributed on the substrate in a bending manner. Through the bending distribution mode, the liquid leakage detection range of the liquid leakage detection belt can be enlarged, so that the liquid leakage detection precision is improved, in addition, when the liquid leakage detection belt is laid in a bending mode, the laying flatness is difficult to guarantee, and therefore, the liquid leakage detection sheet provided by the utility model can be effectively suitable for occasions with larger liquid leakage areas, and the production efficiency is improved. And the method is also suitable for liquid leakage detection of a liquid conveying pipeline.

The present invention discloses a foundation cushion structure and a construction method thereof, wherein the foundation cushion structure comprises: a geocell, comprising a first geotechnical partition and a second geotechnical partition arranged in a grid shape; a geobag, wherein vibration-damping materials are filled inside, and the geobags filled with vibration-damping materials are respectively compacted and stacked in the grid space of the geocell according to height; a plurality of limiting shafts, respectively inserted between a first limiting sleeve of the first geotechnical partition and a second limiting sleeve of the second geotechnical partition, wherein the outer sides of the first limiting sleeve and the second limiting sleeve are respectively laterally movable and plugged with corresponding fixed pins, and a blocking and pushing mechanism matched with the fixed pins is arranged on the limiting shaft. The present invention forms a lateral restraining force for the stacked geobags through the geocell to ensure the stacking stability of the geobags filled with vibration-damping materials, and then effectively forms a reasonable vibration-damping effect through the vibration-damping materials in the stably arranged geobags.

The utility model provides a planted mobile phone clamping and fixing device. The planted mobile phone clamping and fixing device comprises a connecting rod, a locking hoop, a mobile phone fixing ring and a positioning piece. The connecting rod is used for connecting a planting mobile phone and a mechanical arm, the locking hoop is used for being matched with the mobile phone fixing ring to clamp and fix the planting mobile phone to the connecting rod, and the positioning piece is used for achieving mutual locking between the fixing hoop piece and the mobile phone fixing ring. Based on the structure, the planting mobile phone is installed by utilizing the second connecting assembly on the locking hoop and the first connecting assembly on the connecting rod in cooperation with the mobile phone fixing ring and the locking hoop, the connecting structure can be simplified, dismounting and fixing between the planting mobile phone and the mechanical arm are achieved, and the assembling convenience is improved.

The utility model provides a steering gear shell assembly, a steering gear and a vehicle, the steering gear shell assembly comprises a steering gear shell and a suspension support arranged on the steering gear shell; the suspension support is located on one side of the steering gear shell, at least one suspension lining is arranged on the suspension support, and the suspension support is detachably connected to the steering gear shell. Compared with a traditional steering gear shell product, the steering gear shell assembly has the advantages that the use number and types of parts can be reduced, standardization and common design of the parts can be achieved, weight and cost can be reduced, the integration, common and light weight degree of a whole vehicle can be improved, and the steering gear shell assembly is suitable for popularization and application. Therefore, the quality and the market competitiveness of the whole vehicle are improved.

This utility model relates to the field of steering gear housing technology, and discloses a transition structure and a steering gear housing, including a transition interface, which is disposed at one end of the housing. A connecting seat is disposed on the outside of the housing, and the connecting seat is disposed on the outside of the transition interface. The transition interface is provided with a snap-fit ​​component, a multi-layer component, and a buffer component. The snap-fit ​​component is disposed on the transition interface, the multi-layer component is disposed on the snap-fit ​​component, and the buffer component is disposed on the connecting seat. The utility model proposes to achieve rapid and accurate positioning of the multi-layer component and the transition interface through the sliding snap-fit ​​of the positioning groove and the snap-fit ​​rod, effectively avoiding assembly coaxiality deviation and improving torque transmission efficiency. The multi-layer component adopts a multi-cylinder nested tight snap-fit ​​and is combined with a firm pin for fixation, which greatly enhances the connection stability and structural strength. The buffer component relies on the support rod in the support cavity and the outer elastic pad to form a multi-directional buffer to reduce vibration impact, reduce component fatigue wear, and improve assembly convenience.

The invention belongs to the technical field of carbon dioxide trapping, and particularly discloses an integrated carbon dioxide trapping device, which comprises a box body formed by integrating a plurality of cabins, the plurality of cabins are divided into at least two working areas, each working area is internally provided with an adsorption bed, each adsorption bed forms a plurality of adsorption layers from top to bottom, and the adsorption layers are arranged in the box body. Each adsorption layer forms an airflow guide trend, and the airflow guide trends formed between the adjacent adsorption layers are in a reverse trend; in the two working areas, the adsorption bed in one working area is in an adsorption state, the adsorption bed in the other working area is in a desorption state, and the working states of the two working areas are synchronously exchanged under set conditions. Through the arrangement of the special adsorption bed and the switching mode of the two working areas, the cost of the whole device is greatly saved.