58results about How to "Prone to damage" patented technology

The invention discloses a drilling in-situ testing device for testing the mechanical parameters of an engineering rock mass and a use method of the drilling in-situ testing device. The device comprises a penetration sounding loading system, a multi-point testing rotational positioning system, a propelling support system, a hydraulic loading system and a control system. The penetration sounding loading system and the multi-point testing rotational positioning system are connected together through a bearing and can move along with a propelling lever of the propelling support system, and finally,the whole device is regulated and controlled through the hydraulic loading system and the control system. The device and the method drill and load and test the engineering rock mass in situ, the deformation and fracture characteristics of the rock mass having different lithological characters and different drilling depths and the load-displacement curve and data of a surrounding rock in the loading process are acquired, the relevant technical indexes and parameters are obtained through conversion, the device and the method are favorable for accurately simulating the numerical value and effectively designing the supporting scheme in the construction process, the supporting strength and the engineering strength are guaranteed, and the guarantee is provided for the safety construction of theengineering like rock and soil, water resources and hydropower, and mines.

The present invention discloses an automobile engine assembly epicyclic box applicable to several models. The invented automobile engine assembly epicyclic box includes pallet assembly, supporting head assembly and box cover. The pallet assembly is formed from pallet, slideways and buckle latches, on the pallet two fixed slideways are set, said two fixed slideways are parallelly-arranged, two ends of two mobile slideways are respectively fixed on the tracks of said two fixed slideways, in the front of pallet and in the back of pallet are respectively set two buckle latches; the box cover is connected with pallet by means of buckle latch; the supporting head assembly includes fixed seat, threaded rod, swivel nut, steel tube and base seat, the fixed seat is connected with the threaded rod by means of pin shaft, the upper and lower two sides of bearing surface of said fixed seat are respectively equipped with hole, the swivel nut is placed outside of said threaded rod, the swivel nut exterior is equipped with said steel tube, the swivel nut, steel tube and base seat are welded into one body, and the base seat is fixed on the mobile slideway.

The invention discloses a compression-shear testing device of structural strength and fatigue of a composite pavement. The structural strength and fatigue life of the composite pavement are evaluatedand estimated through an indoor compression-shear test. The device comprises a loading system, a testing system and a control system, the loading system is a hydraulic servo MTS tester, the testing system sequentially comprises a spherical support, a pressure head, a composite test piece, a clamping ring, a base and an environmental box from top to bottom, the spherical support is meshed with theMTS loading system and the pressure head closely, three-dimensional coordinates of the composite test piece are fixed through the clamping ring and the base, testing temperature and humidity are adjusted through the environmental box, and the composite test piece is loaded by the pressure head; stress data and strain data of the testing process are processed through the control system, and finallycompression-shear testing of the composite test piece can be realized. The device can accurately simulate damage mode and mechanism of a composite pavement structure under traffic load and is of important practical significance and engineering value in guiding design and construction of the composite pavement structure.

The invention relates to a system and method for protecting an electric tail gate stay bar. The system comprises a stay bar motor, a Hall signal collector connected with the stay bar motor, a motor current collector connected with the stay bar motor, and a master control CPU connected with the motor current collector. A motor stroke processing unit is arranged in the master control CPU. The system and the method solve the problems that when an electric tail gate is in a stop state, the stay bar is extremely prone to damage due to the man-made electric tail gate pulling and dragging behavior; the service life of the electric tail gate is further improved, the reliability of the electric tail gate is improved, whether the electric tail gate of an automobile is in a man-made pulling and dragging state or not can be judged through the system, the stroke speed of the stay bar motor can be correspondingly adjusted, the current of the stay bar motor can be reduced through the system in time, and meanwhile an automobile owner can know that the electric tail gate has automatic opening and automatic closing functions. The system is low in using cost, convenient and fast to use and good in using effect.

The invention discloses an irregularly-shaped thin-walled bushing dismounting tool, which comprises an expansion sleeve arranged on the head of a handle, wherein an expansion shaft is movably arranged in the center of the expansion sleeve; the expansion sleeve and the expansion shaft have flared heads with the same taper; a through hole for supporting the tail of the expansion shaft is coaxially formed in the center of the handle; a plurality of expansion grooves are uniformly formed in the head of the expansion sleeve; a thread is formed on a shaft body of the expansion shaft; a nut which can be in threaded fit with the expansion shaft is arranged between the expansion sleeve and the handle, and is rotated to move the expansion shaft forwards and backwards in the expansion sleeve to realize the opening and the closing of the expansion sleeve. According to the irregularly-shaped thin-walled bushing dismounting tool, the expansion sleeve extends into an inner hole of an irregularly-shaped thin-walled bushing in a loose state, the nut is reversely rotated to open the expansion sleeve to further be pressed against the inner hole of the irregularly-shaped thin-walled bushing by the expansion shaft in a supporting way, and when the nut cannot be rotated, the handle is tightly held to pull out the irregularly-shaped thin-walled bushing. The irregularly-shaped thin-walled bushing dismounting tool is ingenious and simple in structure and convenient to operate, and has high popularization value, a dismounting process is quick and labor-saving, and an experience which can be learnt is provided for solving similar problems.

The invention discloses an automatically-overturning clamping device for wind power blades. The device comprises four groups of rotary disc guide mechanisms, wherein annular rotary discs are symmetrically installed on a rotary disc support frame by the four groups of rotary disc guide mechanisms, a notch is formed in the top end of each annular rotary disc, two inclined support beams are welded tothe inner sides of the annular rotary discs at the two sides of each notch, and through holes reserved for the subsequent part installation are formed in the middles of each two support beams; each group of the rotary disc guide mechanisms comprises a guide wheel, a guide wheel shaft, a guide wheel support frame and a tensioning bolt; and each blade bonding clamping mechanism comprises a guide support block, a force-applying screw rod, a screw rod wrench, a thread sleeve, a threaded shaft, a bearing sleeve, a sleeve end cover, a jaw plate, a compression plate, an adjustment screw rod, a support metal plate and a rubber plate. The device is capable of completing support and clamping for the blades by macroscopically adjusting the clamping position of the jaw plate and microcosmically adjusting the bonding posture of the rubber plate, and capable of realizing guide and auxiliary support for the annular rotary discs.

Disclosed is a fender garnish structure (1) which includes a garnish main body (11) for covering a flange of a fender. Furthermore, the garnish main body (11) is provided with a plurality of ribs (12) for creating a clearance between the flange and the garnish main body (11), a plurality of fixtures (13, 14) for securing the garnish main body (11) to a vehicle body member being located near the fender, and a plurality of rupture triggering portions for causing a breakage between the ribs (12) and both fixtures (13, 14).

The invention relates to a large-ratio and large-torque planet carrier steel casting material used for a self-elevating offshore platform lifting gear box and a production method. The material comprises the following chemical components in mass by percentage: 0.28 to 0.35 percent of C, 0.20 to 0.35 percent of Si, 0.65 to 0.85 percent of Mn, less than or equal to 0.030 percent of S, less than or equal to 0.030 percent of P, 0.85 to 0.95 percent of Cr, 0.20 to 0.26 percent of Mo, 0.04 to 0.08 percent of V, and 0.02 to 0.06 percent of Ti; and the remaining content is Fe. The planet carrier steel casting material has the advantages that the working procedures are simplified, connection areas between a pin, an upper flange and a lower flange are subject to smooth transition by circular angles, so that the anti damage capacity and the working stability are enhanced; the traditional casting process of 'progressive solidification' by using the casting structure is changed, external chill is arranged at a specific area to change the earliest solidification area, the solidification feeding of the casting can be changed by changing a feeding channel chain, the connection areas between the pin, the upper flange and the lower flange are tightly, the stress of shrinkage solidification is greatly reduced, and cracks are avoided.

The invention belongs to the field of structural engineering in civil engineering, and particularly relates to a pluggable longitudinal rib type sound insulation steel-concrete composite shear wall and an assembling method thereof. The pluggable longitudinal rib type sound insulation steel-concrete composite shear wall is characterized in involving an H-shaped steel body structure, rib plates and reinforcing meshes, wherein the H-shaped steel body structure comprises a web and two flanges symmetrically arranged on the two sides of the web, a plurality of rows of rib plates are arranged on the web plate from top to bottom, the rib plates are perpendicularly clamped on the web plate, reinforcing meshes are correspondingly arranged on two sides of the web, and the reinforcing meshes are hung on the rib plates. According to the pluggable longitudinal rib type sound insulation steel-concrete composite shear wall and the assembly method thereof, the rib plates are arranged on the web, the stability of the shear wall is improved, notches are formed in the rib plates, welding of steel bars in actual engineering is reduced, the structural integrity and the assembling efficiency are guaranteed on the basis of facilitating construction, meanwhile arranged materials can fully achieve the sound insulation effect, by means of the design of connecting joints and clamping grooves, connection among the structures is convenient and rapid, fastening is reliable, and the workload of on-site molding, installing and welding is reduced.

A universal joint socket has a socket unit, a joint unit, multiple balls, and a collar. The socket unit has a cavity, multiple grooves and multiple ball holes. The joint unit has a spherical joint, and a pin inserted in the spherical joint. The spherical joint is placed inside the cavity of the socket unit with an elastic element inside for supporting the spherical joint, and two ends of the pin are located respectively on the grooves of the socket unit. The balls are respectively disposed in the ball holes of the socket unit for positioning the spherical joint. The collar is mounted around the peripheral wall of the socket unit and closes openings of the ball holes of the socket unit. The universal joint socket has a long operating life and can provide a large torque.

The invention provides low-temperature electrolyte of a nickel-metal hydride battery. The low-temperature electrolyte is prepared from electrolyte and an additive, wherein the electrolyte is preparedfrom potassium hydroxide and lithium hydroxide; the additive is prepared from soluble calcium salt, a non-ionic surfactant and an inorganic corrosion inhibitor; the concentration of each component ofthe additive in the electrolyte is as follows: the concentration of the soluble calcium salt is 0.1 to 1mol / L; the concentration of the non-ionic surfactant is 0.05 to 0.15mol / L; the concentration ofthe inorganic corrosion inhibitor is 0.01 to 0.08mol / L. The low-temperature electrolyte provided by the invention has no separated-out potassium hydroxide crystals at the temperature of -40 DEG C andis matched with proper positive and negative electrode materials to prepare the battery for testing; 80 percent of a rated capacity can be realized after the battery is standardly charged and discharged at -40 DEG C.

The invention discloses an unmanned ship fault simulation system. The system comprises a command subsystem, a control navigation subsystem, a power propulsion subsystem, an energy power subsystem, a wireless communication subsystem and a data storage subsystem, and the subsystems establish connection with a data exchange center through a comprehensive communication link or an Ethernet link. The wireless communication subsystem is used for communicating with a shore-based / mother ship control system, a fault injection computer is connected with the data exchange center and can send a fault execution command to the data exchange center, and the fault execution command can also be sent to all subsystems through the data exchange center so as to simulate the fault situation. A system-level platform of an unmanned ship is built, and fault simulation of all subsystems and the data exchange center in the unmanned ship is achieved through the fault injection computer. The simulation system is safer, controllable and repeatable, the fault type can be manually set, and training and improvement of the fault solving capability of workers in actual operation are facilitated.

The invention discloses a high-binding-force super-hydrophobic coating and a preparation method thereof. The high-binding-force super-hydrophobic coating comprises a binder and a hydrophobic coating.The preparation method mainly comprises binder spraying, hydrophobic coating spraying and heating curing treatment; and a metal matrix is adopted as an acceptor. The volume ratio of the raw materials,namely gamma-glycidyl ether oxypropyl trimethoxy silane to distilled water to ethanol of the binder is 2: 1: 9 to 4: 7: 9. The volume ratios of the raw materials of the hydrophobic coating are as follows: 1.5-3g / L of multiwalled carbon nanotubes; 1-4g / L of silicon carbide powder; 40-100mL / L of tetraethyl silicate; 20-80mL / L of heptadecafluorodecyltrimethoxysilane hydrolysate; and ethanol servingas a solvent. The binder adopted by the high-binding-force super-hydrophobic coating of the invention can form covalent bonds with the multi-walled carbon nanotubes and silicon carbide in the hydrophobic coating, and therefore, the binding force of the binder is high, the falling area of the binder, tested by a metal surface gridding method, is less than 5%, and the long-acting stability of a hydrophobic function can be ensured; and the multi-walled carbon nanotubes used in the high-binding-force super-hydrophobic coating of the invention can fill pores formed in a silane curing dehydration process, so the coating has good compactness, and the corrosion resistance of the coating can be effectively improved.

The invention discloses a quick-opening and quick-closing pressing beam hasp-type feeding and discharging device. The quick-opening and quick-closing pressing beam hasp-type feeding and discharging device comprises a hasp locking block, a hasp U-shaped buckle, a hasp adjusting nut, a hasp handle, a pressing beam, a pressing beam support, a pressing beam rotating pin, a material opening sealing plate, a U-shaped sealing ring, a sealing plate support, a material opening flange and a material opening connector. The quick-opening and quick-closing pressing beam buckle-type feeding and discharging device is characterized in that the material opening flange and the material opening connector are welded; the U-shaped sealing ring is installed at the lower portion of the material opening sealing plate; the L-shaped pressing beam is fixed to the upper surface of the material opening sealing plate through the sealing plate support, and the tail end of the pressing beam is hinged to the pressing beam rotating pin on the pressing beam support; the hasp handle is hinged to the end of the pressing beam, and the front portion of the hasp handle is provided with a bolt hole; and the upper portion of the hasp U-shaped buckle is hinged to the bolt hole in the hasp handle through the hasp adjusting nut. The quick-opening and quick-closing pressing beam buckle-type feeding and discharging device has the beneficial effects that operation is rapid, reliability is high, the sealing effect is good, the cost is low, and the application range is wide.

The invention provides an OLED displayer comprising four display screens distributed in a 2*2 array on a plane, and two display screens in the same row share one drive integrated circuit and one flexible circuit board to realize synchronous display. The two ends of the side edge, facing the other display screen in the same row, of each display screen are provided with a first corner part and a second corner part respectively, and the first corner part and the second corner part are far away from and close to the other row of display screens respectively. The two first corners of the two display screens in the same row are rotationally connected through a set of switching assemblies, and the two second corners of the two display screens in the same column are rotationally connected througha set of switching assemblies. The OLED displayer can enable the four display screens to rotate relatively on a plane, and can enable the two rows of display screens to turn over relatively. Accordingto the OLED displayer provided by the invention, the rotation of each display screen on the plane can be realized, and another display size can be realized. In addition, the two display screens in the same row share the driving integrated circuit and the flexible circuit board, and synchronous control over the two display screens can be achieved.

The names of the invention are a laser pattern device and a laser pattern optical mesh of an invisible sensor layer of a touch panel. The laser pattern device of the invisible sensor layer of the touch panel comprises a loading unit, a deposition unit, a laser unit and an etching unit; the loading unit is provided with a substrate; a sensor layer is formed by the deposition unit on the substrate; the laser unit performs the laser annealing treatment on a bent anti-interference patch pattern and a sensor layer predetermined pattern of the sensor layer to form a structure changing layer; and the etching unit removes the part of sensor layer except the anti-interference patch pattern and the sensor layer predetermined pattern to form the invisible sensor layer of the touch panel. The laser pattern device provided by the invention can obtain relatively accurate transfer patterns, and can avoid the problems of the common situation that the substrate is likely to be bent, damaged or polluted caused by the fact that the substrate is sent to an oven to be annealed.

The invention discloses a battery end testing device. The testing device comprises a device body, a driving part and a telescopic part. The device body comprises a sliding cavity extending inwards from the surface. The telescopic part is arranged in the sliding cavity. The telescopic part comprises a sleeving cylinder, an elastic component and a compression component. The elastic component is arranged in the sleeving cylinder. The compression component is connected with the sleeving cylinder in a sliding manner along the axial line direction of the sliding cavity. One end of the compression component abuts against the elastic component and the other end extends out of the sleeving cylinder. The outer end part of the compression component is connected with the contact of a conductive wire. The elastic component is insulated from the contact. The driving component is structured to drive the telescopic part to slide outwards along the axial line direction of the sliding cavity so as to enable the contact to be in elastic contact with the battery end of the to-be-tested component.

The invention relates to the technical field of safety monitoring, and discloses a tunnel dome online monitoring method and system, electronic equipment and a storage medium. The stress condition of atunnel dome can be accurately monitored in real time. The system comprises a monitoring pipe which is horizontally buried in a soil layer above a tunnel dome; vibration sensors which are arranged ata plurality of positions in the monitoring pipe and are used for detecting vibration signals at the plurality of positions in the monitoring pipe; a wave generation device and a wave detection devicewhich are arranged at a pipe opening in one end of the monitoring pipe and are respectively used for generating mechanical waves propagating along the monitoring pipe and detecting reflected waves generated when the mechanical waves propagate in the pipe wall of the monitoring pipe; and a data processing device which is used for determining the crack condition and the deformation condition of themonitoring pipe according to the vibration signals output by the vibration sensors and the reflected waves detected by the wave detection device, determining the stress condition of the monitoring pipe according to the crack condition and the deformation condition, and further determining the stress condition of the tunnel dome.

The invention provides a waterproof keyboard and manufacturing process thereof, and belongs to the field of computer accessories. The waterproof keyboard comprises a shell and a PCB plate disposed in the shell. The inside of the shell is provided with a containing groove for holding the PCB plate, the PCB plate is completely sealed and bonded in the containing groove by the epoxy resin; the waterproof keyboard designed by the waterproof keyboard and manufacturing process thereof can solve the problem of poor waterproofness of the exiting waterproof keyboard, and the manufacturing process of the waterproof keyboard solves the problem of complicated manufacturing process and high cost of the exiting waterproof keyboard.

The invention discloses single dose type air oxidation hair dye composition and an application thereof. The single dose type air oxidation hair dye composition comprises components in percentage by weight as follows: 5.0%-10.0% of an emulsifying agent, 3.0%-5.0% of a thickening agent, 2.0%-7.0% of oxidation dyes, 2.0%-5.0% of an alkaline agent, 1.0%-3.0% of hydroxyhydroquinone compounds, 1.0%-2.0% of a surface active agent, 0.05%-0.1% of a metal chelating agent, 2.0%-5.0% of an auxiliary penetrating agent, 0.1%-0.5% of other auxiliaries and the balance of water. The single dose type air oxidation hair dye composition is stable in system, fast to color, uniform and durable in dyeing effect and high in covering power; operation such as mixing of double doses and the like in a traditional method is avoided, and the use is convenient; and meanwhile, the composition is not required to be matched with hydrogen peroxide, so that adverse effects of scalp itching, pricking and the like are prevented, hair damage of the hair dye is reduced, and the safety is higher.

The invention discloses a football training marker comprising a base and a driving motor; the driving motor is arranged on the base; an output shaft of the driving motor is arranged in the height direction, an identification set is arranged on the base, the identification set comprises a plurality of connected rotating bodies, the adjacent rotating bodies are arranged in a staggered mode, and onerotating body, located on the edge, of the identification set is eccentrically connected with the output shaft of the driving motor to drive the identification set to rotate through the driving motor.The marker is simple and reasonable in structure; the marker can move, so that a certain variable is added to training, athletes can focus more attention, and the marker is beneficial to completing training of technical actions.

The invention discloses a device for accurately measuring a generator temperature based on a platinum thermistor. The device comprises a base and a generator. The base is fixedly connected with a fixing seat, and the generator is mounted on the fixing seat. The generator comprises a generator housing, a rotating shaft, a front end cover and a bearing. A first temperature measuring box, a second temperature measuring box and a water tank are placed on the base. The first temperature measuring box and the second temperature measuring box are each fixedly connected with a first mounting seat anda platinum thermistor temperature sensor equipped with a temperature display. The device measures the generator temperature by means of the high detection precision of the platinum thermistor temperature sensor, reduces the heat loss during a temperature conduction process by an L-shaped heat preservation cover cylinder so as to achieve accurate generator temperature detection, and can cool the generator in the case of excessively high generator temperature.

The invention provides the rapid steel inlaid spiral cutter with good wear resistance. The rapid steel inlaid spiral cutter with the good wear resistance comprises a cutter head and a spiral rod, reinforcing ribs are arranged on the outer surface of the spiral rod, flowing holes are formed in the reinforcing ribs, spiral teeth are arranged on the outer surface of the spiral rod, and a chip removal channel is formed between every two adjacent spiral teeth. According to the rapid-steel-inlaid spiral cutter with the good wear-resisting performance, the wear-resisting strips arranged on the rapid-steel-inlaid spiral cutter and the spiral teeth can synchronously rotate, the hole diameter is expanded and ground, grinding friction force is buffered and prevented from directly acting on the surfaces of the spiral teeth, the wear-resisting performance of the rapid-steel-inlaid spiral cutter is improved, and the service life of the rapid-steel-inlaid spiral cutter is prolonged. And the situation that when hard impurities exist in a machined part, the impurities make contact with and rub against the surface of the tool under continuous pushing of an operator, the friction force of the tool is increased, and the tool is prone to being damaged in the friction process is avoided.

The safety protection mechanism comprises a supporting pipe fixedly arranged on a rack and a steel wire rope inserted into the supporting pipe in a penetrating mode, the inner wall of the supporting pipe is in limited sliding connection with a transmission sleeve, and the surface of the steel wire rope penetrates through the upper surface and the lower surface of the transmission sleeve and is in sliding connection with the transmission sleeve. Two symmetrical side plates are slidably connected to the inner wall of the transmission sleeve, connecting rods are fixedly connected to the opposite sides of the two side plates, transmission connecting rods are rotationally connected to the opposite sides of the two side plates through pin shafts, and the ends, away from the side plates, of the transmission connecting rods are rotationally connected with the inner wall of the supporting pipe through pin shafts. Through cooperative use of the structures, the problems that in the actual use process, due to the fact that a traditional damping tensioning structure is complex, the acting effect is single, the effective auxiliary effect on safety protection is difficult to achieve, and the application range is limited are solved.

The invention discloses a battery end testing device. The testing device comprises a device body, a driving part and a telescopic part. The device body comprises a sliding cavity extending inwards from the surface. The telescopic part is arranged in the sliding cavity. The telescopic part comprises a sleeving cylinder, an elastic component and a compression component. The elastic component is arranged in the sleeving cylinder. The compression component is connected with the sleeving cylinder in a sliding manner along the axial line direction of the sliding cavity. One end of the compression component abuts against the elastic component and the other end extends out of the sleeving cylinder. The outer end part of the compression component is connected with the contact of a conductive wire. The elastic component is insulated from the contact. The driving component is structured to drive the telescopic part to slide outwards along the axial line direction of the sliding cavity so as to enable the contact to be in elastic contact with the battery end of the to-be-tested component.

The invention relates to a large-ratio and large-torque planet carrier steel casting material used for a self-elevating offshore platform lifting gear box and a production method. The material comprises the following chemical components in mass by percentage: 0.28 to 0.35 percent of C, 0.20 to 0.35 percent of Si, 0.65 to 0.85 percent of Mn, less than or equal to 0.030 percent of S, less than or equal to 0.030 percent of P, 0.85 to 0.95 percent of Cr, 0.20 to 0.26 percent of Mo, 0.04 to 0.08 percent of V, and 0.02 to 0.06 percent of Ti; and the remaining content is Fe. The planet carrier steel casting material has the advantages that the working procedures are simplified, connection areas between a pin, an upper flange and a lower flange are subject to smooth transition by circular angles, so that the anti damage capacity and the working stability are enhanced; the traditional casting process of 'progressive solidification' by using the casting structure is changed, external chill is arranged at a specific area to change the earliest solidification area, the solidification feeding of the casting can be changed by changing a feeding channel chain, the connection areas between the pin, the upper flange and the lower flange are tightly, the stress of shrinkage solidification is greatly reduced, and cracks are avoided.

The invention discloses a 5G photovoltaic data port information transmission broken contact prevention communication device and an operation method, the device comprises a main body, a panel protection mechanism, efficient heat dissipation mechanisms, a port protection mechanism and a clamping limiting mechanism, the front end of the main body is provided with the panel protection mechanism, and the two side edges of the main body are provided with the efficient heat dissipation mechanisms. A panel protection mechanism is arranged at the front end of the main body, a port protection mechanism is arranged at the rear end of the main body, a clamping limiting mechanism is arranged in the port protection mechanism, the panel protection mechanism comprises a key panel, embedding grooves, a rotating assembly, a connecting arc plate and an embedding piece, the embedding grooves are formed in the edge sides of the two ends of the key panel, and the rotating assembly is arranged on one side of the key panel. According to the 5G photovoltaic data port information transmission break contact prevention communication device and the operation method, a user can select one or more groups of clamping blocks and clamping grooves according to the size of the plug-in, so that the effect of limiting and clamping the plug-in is achieved, and the break contact phenomenon occurring in the signal transmission process is reduced to a great extent.

The invention relates to water purification equipment with multiple layers of purification spaces. PURIFICATION DEVICE COMPRISING A PURIFICATION DEVICE BODY, wherein the purification equipment main body comprises a lower sealing sleeve and an upper sealing sleeve which are buckled with each other; the lower sealing sleeve comprises a bottom plate and an outer side sealing sleeve arranged on one side of the bottom plate; a first annular filtering cavity is defined between the outer side sealing sleeve and the upper annular sealing plate; a second annular filtering cavity is defined between theupper annular sealing plate and the lower annular sealing plate, a third annular filtering cavity is defined by the lower annular sealing plate, the upper cover plate and the bottom plate, the third annular filtering cavity is divided into a precise filtering cavity and a purified liquid outlet cavity through the precise filtering assembly, and it is guaranteed that sewage is subjected to multi-layer purification in the equipment.