133results about How to "Improve stress stability" patented technology

The invention discloses an experimental method for simulating the stress corrosion of a metal material under working conditions, belongs to the technical field of metal corrosion simulation, and solves the problem in the prior art that a sample device cannot truly simulate solution scouring in the working environment. The experimental method comprises the following steps: firstly, designing related experimental parameters according to the actual working environment; then respectively connecting a test piece to an upper loading part and a lower loading part through pins, mounting respectively corresponding nuts, adhering a strain gage to the center of the test piece, connecting the stress gage to a strain meter through a wire, loading load onto the test piece through the upper loading part and the lower loading part; finally, after loading a certain stress, taking down the strain gage, suspending a loading mechanism on a circular tray through a high-temperature-resistant cotton thread, placing the loading mechanism in a vessel body, and starting to do an experiment and record related data according to the conventional method. The experimental method can be used for testing related properties of the metal test piece which is corroded at high temperature and high pressure, such as the corrosion rate and the tensile property.

The invention provides a method for reinforcing a transmission line iron tower. The method comprises the following steps of: selecting a panel length of the transmission line iron tower, and measuring the net distance between two opposite ends of a gusset plate at two adjacent panel points of the same reinforced principal material according to the selected panel length; intercepting the length ofthe reinforced principal material according to the net distance; punching bolt holes on two limbs of the selected reinforced principal material and two limbs of a reinforcing principal material respectively, and aligning the bolt holes on the reinforcing principal material with the corresponding bolt holes on the reinforced principal material mutually; splicing the two limbs of the reinforcing principal material on the reinforced principal material, and fixing by utilizing fastening bolts; reinforcing the other three reinforced principal materials of the panel length; after the four reinforced principal materials of the panel length are reinforced, reinforcing the reinforced principal materials of other panel lengths in a reinforcing mode which is the same as that of the reinforced principal materials of the panel length; and reinforcing the panel points by utilizing angle steel.

The invention discloses a shear of a backpack-type mulberry branch cutting machine. The shear of the backpack-type mulberry branch cutting machine solves the problem that an existing mulberry branch cutting machine is inconvenient to operate. According to the technical measure, the shear of the backpack-type mulberry branch cutting machine comprises a shear body, two blades of the shear body are hinged to the front end portion of a connecting rod through a pivot in a cross mode, the knife edge parts of the blades extend out towards the front end portion of the connecting rod, handles of the blades extend to the rear end portion of the connecting rod, and cutting edges of the knife edge parts of the two blades are opposite. The shear of the backpack-type mulberry branch cutting machine is characterized in that a sliding block is arranged on the connecting rod in a clearance mode; the sliding block and the handles of the two blades are movably connected through connection pieces; a reset spring used for enabling the shear to be opened is arranged between the sliding block and the connecting rod; an inhaul cable used for enabling the shear to be closed is connected with the sliding block; the inhaul cable extends within the width range of the connecting rod.

The invention discloses an integrated assembly type pipe gallery based on a composite bottom plate and a construction method thereof. Each unit plate block in the composite bottom plate of the integrated assembly type pipe gallery comprises a laminated portion and a cast-in-place portion which is located on the periphery of the laminated portion, wherein each laminated portion comprises a prefabricated bottom plate which is fixedly connected with a foundation cushion layer, a bottom plate truss and a bottom plate cast-in-place layer, and the peripheral edges of each bottom plate truss horizontally outwards extends to form a steel bar framework of the corresponding cast-in-place portion; a double-layer laminated wallboard comprises an outer prefabricated plate which is located on a water attaining face, an inner prefabricated plate which is located on a water opposite face and a cast-in-place sandwich layer which is located between the outer prefabricated plate and the inner prefabricated plate, the outer prefabricated plates and the inner prefabricated plates are connected through wall truss steel bars, and the bottoms of the wall truss steel bars are connected with the margins ofside edges of the steel bar frameworks of the cast-in-place portions of the composite bottom plate; and the lower end surface of the outer prefabricated plate is tightly attached to the upper surfaceof the foundation cushion layer, and a top plate cast-in-place layer of a laminated top plate and the cast-in-place sandwich layer of the double-layer laminated wallboard are integrally casted. According to the integrated assembly type pipe gallery and the construction method, the construction is convenient, fast and efficient, the construction cost is low, the waterproof effect is good, and the overall performance of the pipe gallery is high.

The invention discloses an outer plate stamping process. The outer plate stamping process comprises the following steps: S01: drawing: drawing a base material into a box-shaped component; S02: trimming and punching: adopting non-circumferential trimming, reserving a convex lug on a component, and punching a positioning hole in the convex lug; S03: laterally flanging and laterally trimming: putting a component processed and molded in the step S02 onto the convex mould, and selecting a cylindrical dowel pin for a lower mould base, carrying out left-right-end lateral flanging and front-end secondary trimming on the primary of the component after the positioning hole and the cylindrical dowel pin are inserted and positioned; and S04: laterally flanging and laterally trimming: carrying out front-end secondary lateral flanging after the cylindrical dowel pin penetrates through a cutter block of a low-mould trimming concave mould and is inserted and positioned with the positioning hole, and cutting off the convex lug. In this way, the stamping process increases the steps of reserving the convex plug and punching the positioning hole in the convex leg, so that component positioning in subsequent steps is guaranteed, and the positioning reliability is improved.

The invention provides a forward-reverse combined construction method for a foundation pit of non-permanent vertical support system, and belongs to the technical field of foundation pit support designand construction, and provides a construction method which has the advantages of a reverse construction method and a forward construction method at the same time. According to the method, a beam plate with a permanent structure is adopted as a horizontal support, and a temporary vertical support member is adopted to bear a vertical force during foundation pit construction. And earthwork is excavated according to the floor from top to bottom, a structural beam plate is poured, a permanent vertical member is poured from bottom to top after bottom plate construction is finished, and finally temporary steel upright posts are disassembled from top to bottom to finish earthwork excavation and structural construction of the whole basement. Namely, when the permanent structural beam plate is adopted to replace a support in the foundation pit, the temporary vertical support member is adopted to bear the vertical force during the construction of the foundation pit, and the excavation of the foundation pit and the construction of the basement structure of the whole basement are achieved through reasonable construction sequence and reliable node connection.

The invention relates to a circuit board and a drilling method of the circuit board. The circuit board is drilled to form the first hole, the hole diameter of the first hole is smaller than that of the target hole, and when the second hole is drilled, a part of material is cut by drilling the first hole, so that the chip removal requirement for drilling the second hole is reduced; meanwhile, as the drilling area of the first hole is located in the drilling area of the second hole, the hole wall of the first hole can be used for providing supporting and guiding effects for drilling of the second hole, and the breaking risk of the drill bit is reduced. Due to the fact that the hole depth of the first hole is smaller than that of the target hole, the chip removal requirement for drilling thefirst hole and the blade length requirement of the drill bit are lowered, and the problem that in the process of drilling the first hole, the drill bit is broken due to the large drilling depth or chip removal problem of the drill bit is effectively solved. According to the drilling method of the circuit board, especially in the machining process of the circuit board with the high thickness-diameter ratio, the target hole can be formed only through two drilling steps, the drilling steps are simplified, the drilling efficiency is improved, and the production efficiency of the circuit board is improved.

The invention relates to an integrated high-voltage electric box for a battery system. The integrated high-voltage electric box is used for installing a high-voltage electric component of the battery system therein, wherein the high-voltage electric component comprises a positive electric component, a negative electric component and a functional electric component; the electric box comprises an upper cover and an installation base; the upper cover is detachably connected to the installation base; the high-voltage electric component is arranged between the upper cover and the installation base; and one side surface, connected with the upper cover, of the installation base is provided with an installation part for installing the positive electric component, the negative electric component and the functional electric component and separating the positive electric component, the negative electric component and the functional electric component in an insulating manner. According to the electric box provided by the invention, the positive electric component, the negative electric component and the functional electric component in the high-voltage electric component of the battery system are integrated into an integral structure through the arranged installation part, so that the battery system is high in integration degree, high in space utilization ratio, small in installation space and flexible and convenient to maintain.

Provided is a thin film transistor comprising an oxide semiconductor thin film layer and has a threshold voltage that does not change much due to light, a bias stress or the like, thereby exhibiting excellent stress stability. A thin film transistor of the present invention is provided with: a gate electrode; an oxide semiconductor layer that is used as a channel layer; and a gate insulator film that is arranged between the gate electrode and the channel layer. The oxide semiconductor layer is configured of at least one metal element that is selected from the group consisting of In, Ga, Zn and Sn (excluding the cases where the oxide semiconductor layer is constituted of metal elements Sn, and at least one of In and Zn). The hydrogen concentration in the gate insulator film, which is in direct contact with the oxide semiconductor layer, is controlled to 4 atomic % or less.

The invention discloses a walk-behind tea tree pruning machine, which comprises a frame, an armrest arranged on the frame, a driving device, a walking mechanism connected with the driving device, and a pair of blades arranged opposite to each other symmetrically. The gearbox for trimming drive is movably arranged on the frame through the rotary shaft, and can drive the blade to rotate around the rotary shaft, and the gearbox for trimming drive is connected to the driving device. A kind of hand-held tea tree pruning machine of the present invention, the pruning machine adopts the power self-propelled type, does not need to push manually, reduces the labor intensity of the workers and improves the speed of moving forward, and adopts double-sided symmetrical arrangement of blades, and can travel at the same time Trim the tea trees on both sides, improve the efficiency of the construction and the stability of the whole machine, the position of the blade can be switched, making the pruning more flexible.

The invention discloses a multi-point equal clamping device applied to the field of mechanical tools. The multi-point equal clamping device is characterized by structurally comprising a plurality of claw fingers and a claw finger drive device, wherein each claw finger comprises a clamping part, and the position, towards a clamped object, of each clamping part is uniformly equipped with a pluralityof hydraulic cylinders; each hydraulic cylinder comprises an oil cylinder piston and a pressure cavity; the pressure cavity on the same claw finger is in communication; and each oil cylinder piston comprises a clamping end which extends to the outside of the corresponding clamping part. The clamping ends of the hydraulic cylinders are utilized to perform clamping operation; pressure cavities of the hydraulic cylinders communicate with one another, so that the position of hydraulic oil also can be transferred according to different pressure, and therefore, the occurrence of a condition that acting force between the clamping ends and workpieces is too high is avoided. Circulating action of the hydraulic oil guarantees stress uniformity of the surface of the clamped object, so that a workpiece damage rate is effectively reduced, and the take-up effect of the clamped object is guaranteed. Meanwhile, weakening, caused by stress deformation, of clamping force can be eliminated during claw clamping by uniform stress, so that guarantee is provided for clamping force, on the clamped objects, of the claw fingers.

The invention discloses a short stress line rolling mill and a method for eliminating thread gaps thereof, belonging to the technical field of steel rolling systems in the metallurgical industry. The short stress line rolling mill of the present invention comprises a frame, a pull rod assembly, a roll train assembly, a guide beam assembly, and a roll gap adjustment device. A balance device for eliminating thread gaps is installed in the pull rod assembly, and the balance device includes a cage, a nut, A disc spring, a support member and a retaining sleeve. The two ends of the support member are respectively equipped with retaining sleeves and nuts. The disc spring is set on the surface of the supporting member and is limited by the retaining sleeve and the nut to form a balance assembly. The above-mentioned balance assembly is installed in the cage, and is installed in the tie rod assembly through the cage. The present invention installs a gap elimination balance device in the assembly of the pull rods of the rolling mill, and optimizes the structure of the balance device so that it can be installed in the form of components, thereby effectively improving the effect of eliminating thread gaps in the rolling mill, thereby ensuring that the rolling mill rolling precision.

The invention provides an ultrasonic medical appliance cleaning device, which includes a cleaning and disinfection tank, an ultrasonic generator and a cleaning solution disposed in the cleaning and disinfection tank. A classification mechanism and a driving mechanism for driving the classification mechanism to rotate are arranged inside the cleaning and disinfection tank. The classification mechanism includes The central axis and a plurality of fan-shaped cleaning baskets arranged equidistantly around the central axis are used to classify and store different medical devices. A plurality of support columns are arranged along the radial extension of the central axis. The ends of the plurality of support columns are far away from the central axis All parts are equipped with ultrasonic generators, and multiple fan-shaped cleaning baskets are arranged in sequence and connected in a circular shape to be erected on the support column; when cleaning, the driving machine can drive the central shaft to rotate horizontally in the cleaning and disinfection tank. By implementing this technical solution, the problem in the prior art that the instruments to be cleaned close to the ultrasonic generator have a better cleaning effect than those far away from the ultrasonic generator can be avoided, and the medical instruments can be classified and cleaned to improve the cleaning efficiency and achieve more Good cleaning effect.

The invention discloses a steel structure supporting system applied to a high-rise fabricated building, and belongs to the technical field of steel structure construction. The steel structure supporting system applied to the high-rise fabricated building can share the load transmitted from a cross beam through the force bearing characteristic of the ring surface of a stable ring, the load is evenly dispersed to the whole stable ring through a force transmitting net and ring-shaped reinforcing ribs, energy is consumed through an energy-consumption medium, with assistance of magnetic force circulation between magnetic reinforcing balls as aiding, on the one hand, the load transmitted to the magnetic reinforcing balls from the stable ring can be counteracted through magnetic force, and on theother hand, the damping effect of magnetic particles in the energy-consumption medium is enhanced; and a pressure bearing spring provides a further buffering energy consumption effect while supporting the stable ring, the force bearing stability of the whole supporting system is improved, meanwhile the load transmitted from the cross beam is subjected to guiding dispersing and buffering counteracting all the time, thus the pressure bearing capacity of the cross beam is remarkably improved, and a solid foundation is laid for development of the high-rise fabricated building.

The invention provides a novel high-strength anchorage device which comprises an anchorage cup, prestressed steel wires and a wire separation board. The novel high-strength anchorage device is characterized in that the wire separation board is arranged in the anchorage cup, and the prestressed steel wires penetrate through the anchorage cup and the wire separation board and are fixed to the end face of the wire separation board. The taper of a first taper hole of the anchorage cup is between 0.1 and 0.2, the taper of a second taper hole is between 0.2 and 0.3, the second taper hole adopts thetaper larger than that of the first taper hole, more stress of the wire separation board is converted into axial stress, axial force bearing is further facilitated, the stress stability of the anchorage device is improved, and deformation of the anchorage cup is reduced. The taper of the outer surface of a wire separation board body is identical to that of the large taper hole of the anchorage cup, the ratio of the radius of curvature of a groove to the radius of the wire separation board body is 1:1, the stress on the wire separation board is even, steel wire holes point at the peak of the first taper hole of the anchorage cup, and shearing damage of the wire separation board to the steel wires is reduced. The strength of the anchorage device is improved, the service life of the anchoragedevice is prolonged, practicability is high, popularization is easy, and economic benefits are good.

The invention relates to a lifting mechanism and belongs to the field of engineering equipment, in particular to a mining excavator lifting mechanism. The mining excavator lifting mechanism comprises a primary speed reduction drive mechanism, a secondary speed reduction drive mechanism and a motor, the non-load end of the motor is provided with a brake, and the load end is connected with the primary speed reduction drive mechanism through a coupling. Because the mining excavator lifting mechanism uses a single-motor single-winding drum structure and two hoisting ropes, the diameter of each hoisting rope is small, the diameter of the lifting winding drum is small, the drive ratio is reduced, the whole mechanism is simple in structure, light in weight, small in volume, less in drive piece number and small in processing and assembly workload, and the manufacturing cost is greatly lowered.

The invention discloses a prestressing-force communication tower structure and a construction method thereof. The tower structure comprises a foundation, a tower body and a communication tower antenna; the tower body comprises a lower portion reinforced segment, an upper portion non-reinforced segment, a top hoop, prestressing-force tendons, middle hoops and oblique supporting rods; the top of thereinforced segment is circularly clamped by the top hoop, a group of the prestressing-force tendons are arranged, and the prestressing-force tendons are distributed in the circumferential direction of the tower body at intervals, wherein the upper ends of the prestressing-force tendons are connected with the top hoop, and the lower ends of the prestressing-force tendons are connected with the foundation; a group of the middle hoops are arranged, and the reinforced segment is parallel and circularly clamped by the middle hoops in the vertical direction at intervals; the oblique supporting rodsare obliquely arranged between the middle hoops and the prestressing-force tendons, the lower ends of the oblique supporting rods are hinged to the middle hoops, the upper ends of the oblique supporting rods are hinged to the prestressing-force tendons. By means of the tower structure, the existing technical problems of poorer material stability and easy generation of component deformation, upward curling and cracking of a traditional prestressing-force communication tower are solved.

The invention discloses a rotary drum. The rotary drum comprises a rotary drum body and a rotational flow plate; the rotational flow plate is located on the inner surface of the rotary drum body and is connected with the rotary drum body; a screen is arranged inside the rotary drum body; the screen and a feeding port of the rotary drum body are located at the same end; and the rotary drum body is linked with the screen. The rotary drum is low in heat loss.

The invention relates to a construction method of a long-span steel truss suspension structure. The construction method comprises the following steps that supporting jig frames and steel rib frame columns are erected at set positions; steel rib frame beams and supporting columns are spliced layer by layer from bottom to top; multiple web rods are spliced at a top layer to form a steel truss structure; concrete wrapping the steel rib frame columns is poured layer by layer from bottom to top so as to form steel-reinforced concrete columns and concrete floors wrapping the steel rib frame beams, and later-poured areas are reserved at the ends of the concrete floors; after the concrete columns and the concrete floors to be located on the top layer solidify, the reserved later-poured areas are poured layer by layer from bottom to top, and connecting structures for connecting the corresponding concrete floors with the steel-reinforced concrete columns are formed in each layer. The top load ofa steel structure frame is completed borne by the supporting jig frames and the steel rib frame columns, and the structure has better stress stability. The connecting structures are constructed afterthe later-poured areas are utilized, the problem can be solved that beam-column nodes of the floors are likely to crack.

The invention relates to the field of polyester processing, and in particular relates to a preparation method of polyester silk-like fabric and an adopted profiled fiber. According to the technical scheme, a profiled fiber monomer for preparing the polyester silk-like fabric comprises a matrix fiber and branch fibers, wherein the matrix fiber is hollow and is provided with at least three first arc-shaped notches; the branch fibers are arranged in the first arc-shaped notches; bulges are formed between the adjacent first arc-shaped notches; at least two second arc-shaped notches are arranged on the surface, facing the first arc-shaped notches, of each branch fiber; a first support part is formed between two adjacent second arc-shaped notches; a second support part is formed at the outer side of the second arc-shaped notch at the outermost side; the surface of each first arc-shaped notch on the back surface of each branch fiber sinks inwards to form a third arc-shaped notch; and the maximum distance between the axis of the matrix fiber and the bulges is greater than that between the axis of the matrix fiber and the branch fibers in the same cross section. The polyester silk-like fabric prepared by the method has good elasticity and breathability.

The invention discloses an arch bridge supporting tool for improving arch bridge construction stability and a construction method thereof, belonging to the field of municipal construction. The arch bridge supporting tool disclosed by the invention comprises angle steel and at least two connecting rods horizontally fixed on an arch bridge main beam, wherein one side of the angle steel is perpendicular to the connecting rods and is fixedly connected with the connecting rod; and a horizontal forced plane used for supporting the arch is formed on the other side of the angle steel. The arch bridge supporting tool disclosed by the invention provides a stress plane for an arch bridge plate supporting system, and the condition that a stressed plane of scaffolding steel pipes (arches) is suspended is avoided; and moreover, in the arch bridge construction process, when the arch is constructed on the beam plate on the upper part of a web arch, the arch vertical rod is erected on the angle steel plane to form a lower stressed plane, and the upper load can be vertically transferred to the arch bridge main beam. The arch bridge supporting tool disclosed by the invention is simple in structure, convenient to operate, low in cost and high in construction efficiency, the stress stability of the arch can be greatly improved, and the construction safety is guaranteed.

The invention discloses an installation device and method for an arc-second-level three-dimensional optical deformation measurement device and aims at conducting reliable installation on the arc-second level three-dimensional optical deformation measurement device. The installation device is formed by a transmitting module installation device and a receiving module installation device, the transmitting module installation device is composed of a transmitting main lens cone, a transmitting tail adjustment support, a light source installation support, a transmitting lens pressing ring, a transmitting lens fixing cover, a diaphragm installation plate and a light source installation plate, and the receiving module installation device is composed of a receiving main lens cone, a receiving lens pressing ring, a receiving lens fixing cover, a receiving tail adjustment support and a detector installation support. A sliding control and pressure fixing mode is adopted to install an adjustment portion of the three-dimensional optical deformation measurement device. By means of the installation device and method, the measurement device can be reliably installed, the installation device has the advantages of being adjustable in accuracy, convenient to adjust, stable and reliable after adjustment and the like, and the installation device has good stability under physical conditions of changed environment temperature, changed stress states and the like.

The invention discloses a height-adjustable floating roof pillar with a wedge surface sealing structure, and belongs to the technical field of floating roof pillars. The floating roof pillar comprisesa pillar, a sleeve, a floating roof and an adjusting assembly, wherein the pillar passes through the sleeve, the adjusting assembly is arranged outside the sleeve, and the floating roof is welded with the sleeve; the adjusting assembly comprises a plurality of adjusting studs, a pillar supporting ring and a sleeve supporting ring; wedge surface sealing compression rings are arranged outside the adjusting studs; an O-shaped sealing ring is arranged on the strut, the strut supporting ring is welded with the strut, and the sleeve supporting ring is welded with the sleeve. The supporting height of the floating roof pillar is adjustable, the floating roof and the pillar are uniformly stressed, and the utilization rate of the storage tank is increased; the metal sealing ring has the characteristics of universal medium and good sealing performance, and is not prone to aging. The structure is safe and reasonable, the incident of sunken roof is reduced, the effects of being energy-saving, consumption reduction and environmental friendliness are achieved, and economic benefits are increased.

The invention provides a structural heat-preservation integrated external wallboard, a connecting structure and a manufacturing method of the structural heat-preservation integrated external wallboard. The external wallboard is formed through pouring a heat-preservation substrate layer and a structural dense column layer by layer, wherein the heat-preservation substrate layer comprises a substrate part and a convex rib part; the convex rib part is composed of one group of convex ribs; connecting through holes are reserved along the length direction of the convex rib part; a horizontal connecting steel bar penetrates into each connecting through hole; an inwards concave space is formed by the height difference between the substrate part and the convex rib part; the structural dense column layer comprises one group of dense columns; a dense column steel bar is pre-buried into each dense column; the dense column steel bars located in the dense columns are fixedly connected with the horizontal connecting steel bars to form a whole body; a side edge part of a board body is provided with the convex ribs, the dense columns or the inward concave space; at least one inward concave space is formed at the side edge part of the board body. According to the structural heat-preservation integrated external wallboard provided by the invention, a condition that a series of problems are caused by a prefabricated sandwich board used at an existing phase is avoided; the structural heat-preservation integrated external wallboard is suitable for assembled type houses, and has the advantages of low cost, convenience for manufacturing, structural heat-preservation integration and convenience for construction under conditions of no cold / hot bridges, no tie parts and the like.

The invention discloses a pressing machine with stable pressure. The pressing machine comprises hydraulic cylinders and a base plate. Supporting pillars are welded to the two sides of the base plate.A cross beam is welded to the top ends of the two supporting pillars. The hydraulic cylinders are arranged at the top end of the cross beam, and piston rods are arranged at the bottoms of the hydraulic cylinders and are further fixedly connected with pressing plates through tripods. A pressing table is arranged on the upper surface of the base plate. According to the pressing machine with the stable pressure, in the first place, the piston rods are fixedly connected with the pressing plates through the tripods, stressing stability of the pressing plates is effectively improved due to arrangement of the tripods, and compared with a traditional pressing plate, the pressure is made more stable and uniform; in the second place, a pressure sensor is arranged inside the pressing table and can display the pressure borne by the pressing table onto a display screen through a console display, and therefore the pressure of each pressing plate can be known clearly by comparing the pressure with pressure set by users, and the pressure stability of the pressing machine is further improved; and moreover, the two pressing plates are arranged and can operate at the same time, and hence the workingefficiency is improved.

A golf bag with integral main body features that is thin-wall cylindrical main body is made up of plastics through blow moulding or suction moulding, and has the corrugated structure or concave-convex structure on its wall for improving its rigidity, and the connecting structure for installing bottom base, top frame, handle, pockets, castors and golf ball holder.

The invention provides a washing device for recycling sterilization of medical apparatus, and relates to the technical field of medical machinery and equipment. The washing device comprises a washingand disinfecting tank and a washing fluid arranged in the washing and disinfecting tank and further comprises a liquid purifying tank, a circulating pump and a circulating pipeline. The circulating pipeline leads the washing liquid into the liquid purifying tank for being purified, and the washing liquid is conveyed into the washing and disinfecting tank again through the circulating pump. The liquid purifying tank is internally provided with a filter plate and a discharge generator. The discharge generator is arranged below the filter plate. The discharge generator comprises a power supply part, a cathode and an anode, wherein the cathode and the anode are electrically connected with the power supply part. The washing liquid output from the bottom of the liquid purifying tank comprises hydrogen peroxide produced by streamer discharge in the washing liquid through the voltage applied by the power supply part to the cathode and the anode. By means of the technical scheme, the problems that with long-term using of the washing fluid, the sterilization and disinfection functions of the washing liquid are gradually weakened, even the washing fluid is recycled and reused, and the medicalapparatus cannot be qualified in sterilization are solved.