202results about How to "Extended maintenance cycle" patented technology

The invention belongs to the technical field of photovoltaic wet etching, and particularly relates to a low-concentration hydrofluoric acid composite etching solution and a preparation method and an etching process thereof, and the low-concentration hydrofluoric acid composite etching solution comprises the following components in percentage by mass: 5%-10% of hydrofluoric acid, 2%-5% of an etching additive and the balance of water; wherein the etching additive comprises the following components in percentage by mass: 8%-25% of a strong oxidant, 2%-5% of an etching accelerant, 0.5%-2% of an interface modification and mass transfer accelerant, 0.1%-3% of a product control and stabilizer, 0.1%-2% of an equipment compatible corrosion inhibitor and the balance of water; the strong oxidant is used for oxidizing silicon nitride to form a silicon oxynitride transition layer, the etching accelerant is used for providing HF molecules and HF2-ions, and the product control and stabilizing agent is used for complexing SiF62-ions generated by etching.

The invention relates to the technical field of copper pipe heat dissipation, in particular to a micro-channel heat dissipation device based on a copper pipe structure, which comprises a heat dissipation substrate, a copper pipe type heat dissipation channel and a liquid cooling circulation system, the copper pipe type heat dissipation channel is composed of a plurality of plastic copper pipes and replaces a traditional micro-channel or vapor chamber structure. The copper pipe is embedded or fixed in the heat dissipation substrate or on the surface of the heat dissipation substrate, cooling liquid circulates in the copper pipe, and efficient heat dissipation is achieved through the combined action of forced convection heat exchange and heat transfer; the copper pipe has good plasticity and can be subjected to three-dimensional bending forming according to heat source distribution and spatial layout, through the synergistic effect of forced convection and phase change heat transfer, the heat transfer efficiency is improved, particularly, extremely high local heat flow density can be coped, the chip is effectively prevented from being overheated, and the heat transfer efficiency is improved. The heat dissipation channel can be bent and formed in a three-dimensional space according to heat source distribution, accurate matching with the heat source form is achieved, limitation of traditional plane heat dissipation is broken through, and optimal configuration of heat dissipation capacity and heat flux density is achieved.

This invention discloses a pretreatment method for detecting trace perfluorinated and polyfluoroalkyl substances (PFAS) in complex matrix textiles, belonging to the field of materials analysis technology. The method involves placing the textile in an alkaline solvent containing an alkyl sulfonate displacing agent. Under heating conditions, the displacing agent utilizes its competitive adsorption mechanism to forcibly occupy matrix adsorption sites and displace the target analytes into the solvent. Subsequently, the temperature is rapidly lowered to the phase separation induction temperature, inducing supersaturation precipitation of the displacing agent, which then encapsulates impurities in situ and co-precipitates, forming a solid-liquid stratified system. Finally, the supernatant is collected for analysis. This invention utilizes the dual properties of the displacing agent—high-temperature solubilization and low-temperature phase change removal—to effectively break the strong adsorption equilibrium of aged textiles without using a solid-phase extraction column. This solves the contradiction between low extraction rate and significant matrix interference, significantly improving the recovery rate of PFAS. It offers advantages such as low cost, simple operation, and high accuracy.

This utility model relates to the field of electric motor technology, specifically disclosing a rack guide structure, including a guide sleeve with a guide channel. The cross-sectional shape of the guide channel is non-circular or non-arc, and the guide wall of the guide channel includes at least one planar segment. The guide channel is used to cooperate with an anti-rotation part on the rack. The cross-sectional shape of the anti-rotation part is adapted to the shape of the guide channel, allowing the rack to reciprocate along the guide channel. A pump electric motor includes a motor body, a gear, and a rack. The motor body drives the gear to rotate, and the rack meshes with the gear, serving as the reciprocating drive source for the pump body. It also includes the aforementioned rack guide structure. The guide sleeve in the rack guide structure is fixedly installed on the housing of the motor body, and the anti-rotation part of the rack cooperates with the guide channel of the guide sleeve. This solution addresses the problem of easy wear caused by rack deflection or tilting in current rack-output motors.

This utility model relates to the field of lifting equipment technology, specifically disclosing a lifting device with a chain transmission mechanism. The inner walls of the frame are vertically provided with guide rail grooves. Upper and lower rotating shafts are rotatably installed between the top and bottom walls of the frame, with upper and lower sprockets fixedly fitted near their respective ends. The lifting platform includes a lifting frame, guide wheels rotatably installed on the top and bottom of the two side walls of the lifting frame and rolling along the guide rail grooves, adjusting pulleys slidably engaged with the top and bottom ends of the two side walls of the lifting frame in a horizontal direction, and tensioning screws for adjusting the horizontal position of the adjusting pulleys. The outer end of the adjusting pulleys is provided with rollers that roll vertically along the inner wall of the guide rail groove. Chains are connected between the top and bottom ends of the two side walls of the lifting frame, with the top and bottom of the chains passing over the upper and lower sprockets respectively. A power component for driving the upper rotating shaft is provided at the top of the frame. This design effectively solves the problems of unstable movement and inconvenient leveling of the lifting platform in lifting equipment.

The utility model discloses a kind of polysilicon hydrogenation device silicon powder high-efficiency recovery system, including fluidized bed reactor, further including inner cyclone separator, double cyclone separator, metal filter and silicon powder collecting tank;Multiple inner cyclone separators are fixedly arranged in the top inside fluidized bed reactor by fixed support;The air outlet of multiple inner cyclone separators is communicated with the air inlet of gas collector, and the air outlet of gas collector is communicated with the reaction gas outlet in the top of fluidized bed reactor;The reaction gas outlet of fluidized bed reactor is communicated with the air inlet of double cyclone separator by pipeline, and the air outlet of double cyclone separator is communicated with the air inlet of metal filter by pipeline.The advantage is that: by three-stage gradient separation, silicon powder recovery efficiency is greatly improved;Silicon powder separated by double cyclone separator can be returned to fluidized bed reactor dense phase region through return chute pipe, realize raw material recycling, reduce silicon powder waste.

This invention discloses a high-temperature molten slag granulation system coupled with cyclone heat exchange and water mist, including a granulation chamber, a high-temperature molten slag transition device disposed at the top of the granulation chamber, a granulation disc disposed inside the granulation chamber and below the high-temperature molten slag transition device, and a transmission shaft and motor for driving the rotation of the granulation disc. A slag outlet is provided at the bottom of the granulation chamber, and multiple spray nozzles are evenly arranged circumferentially on the upper part of the inner side wall of the granulation chamber. At least four tangential high-pressure air inlets are provided circumferentially below the spray nozzles on the side wall of the granulation chamber, each high-pressure air inlet being connected to a high-pressure blower. An arc-shaped guide baffle is provided on the inner side of each high-pressure air inlet. The system of this invention has a compact structure and no additional moving parts. It can adapt to different working conditions such as blast furnace slag and steel slag by only adjusting the air pressure and water volume, and has broad industrial application value.

The invention discloses an etching machine for a display screen PCB, and relates to the technical field of wet etching, the etching machine comprises a workbench, a rotating roller device, a first hydraulic cylinder, a second hydraulic cylinder, a motor, an air blowing fan and a rotating sprayer, the bottom of the inner wall of the workbench is provided with a water storage tank, the bottom of the water storage tank is provided with a water outlet, the rotating roller device is arranged on the inner wall of the workbench, and the rotating roller device is arranged on the inner wall of the workbench. The first hydraulic cylinder is fixedly installed on the outer wall of the workbench, the second hydraulic cylinder is fixedly installed on the outer wall of the workbench, and the control device is used for controlling whether the rotating spray head is communicated with the first hydraulic cylinder or not and arranged on the inner wall of the workbench and controls fluid to be connected or disconnected through mechanical coincidence and dislocation of through holes of the second water conveying opening and the first water conveying opening. Rapid and accurate response without an intermediate link is realized, and uneven etching caused by spraying angle deviation or valve delay is effectively eliminated.

This application provides a semi-trailer pin seat, including a seat body, a pin seat base plate, and a traction pin. The seat body is disposed on the top surface of the pin seat base plate, and the traction pin is disposed on the bottom surface of the pin seat base plate. The key feature is that the seat body has an oil storage chamber for storing lubricating grease. The semi-trailer pin seat also includes an oil passage structure disposed within the seat body and located outside the oil storage chamber. The oil passage structure forms at least one first flow path, extending in a front-to-back direction. The front end of the first flow path connects to the oil storage chamber, and the rear end of the first flow path is closed. The pin seat base plate has multiple first oil outlet holes, arranged at intervals from front to back, and connected to the first flow path. Based on the semi-trailer's posture, the lubricating grease can automatically and continuously enter the first flow path from the oil storage chamber under gravity, and then seep out through the first oil outlet holes to the area between the semi-trailer pin seat and the traction pin seat, achieving long-term lubrication of the contact surfaces.

The application discloses a self-rotating piston device, which comprises a piston body, a sealing and lubricating ring arranged on the outer circle of the piston body, two oblique sawtooth rings arranged at the front end of the piston body, and a movable counterweight arranged between the two oblique sawtooth rings. The sawteeth of the two oblique sawtooth rings are opposite, oblique and opposite, and staggered. The counterweight is elastically connected with the piston body. The front and rear ends of the counterweight are provided with sawteeth matched with the two oblique sawtooth rings respectively. Under normal state, the counterweight is engaged with the inner oblique sawtooth ring, and the piston completes the stop process of the stroke. The front end of the counterweight is in contact with the oblique sawtooth ring at the front end, and rotates upward by an angle and is engaged with the oblique sawtooth ring at the front end. After the counterweight is reset, the counterweight is in contact with the inner oblique sawtooth ring under the action of the elastic force, is engaged with the inner oblique sawtooth ring and rotates, and completes the rotation of one tooth pitch. After multiple strokes are completed, when the rotating torque generated by the counterweight is greater than the friction resistance of the piston body relative to the cylinder body, the counterweight drives the piston to rotate. The application can achieve the purpose that the sealing ring is uniformly stressed.

The invention provides a high-sulfur natural gas metering and pressure guiding device, method and system, and the device is characterized in that pressure measurement equipment is communicated with a natural gas pipe wall through a first pipeline, the pressure measurement equipment is communicated with differential pressure measurement equipment through a second pipeline, and the differential pressure measurement equipment is connected with the natural gas pipe wall through a third pipeline; the differential pressure type flowmeter is installed in the natural gas pipeline, the second pipeline and the third pipeline are communicated with the pressure liquid accumulation tank through branch pipes respectively, and the liquid inlet ends of the differential pressure liquid accumulation tank, the pressure liquid accumulation tank and the differential pressure liquid accumulation tank are all provided with switch valves electrically connected with the pressure measuring device and the differential pressure measuring device. According to the invention, the state of the gas flow of the natural gas pipeline is firstly judged by the differential pressure type flowmeter, and then pressure and differential pressure detection is carried out on the natural gas in a steady state by the pressure measurement equipment and the differential pressure measurement equipment, so that the accuracy of the detection data is guaranteed, and the corresponding switch valves are opened in time; therefore, the maintenance workload of high-sulfur-content field equipment is reduced.

The invention discloses a knowledge index and text generation control method and system for retrieval enhancement generation. The method relates to the technical field of retrieval enhancement generation and comprises the following steps of knowledge index accuracy evaluation, index accuracy intelligent regulation and control, text generation timeliness evaluation and generation timeliness intelligent regulation and control. According to the method, the knowledge index accuracy is evaluated based on the index accurate parameters, and if the knowledge index does not reach the standard, the semantic relevance and the result effectiveness are regulated and optimized in a self-adaptive mode through the window width and the effective proportion. And then, evaluating the text generation timeliness based on generation timeliness parameters, if the text generation timeliness does not reach the standard, dynamically managing dialogue memory and load by updating a rate threshold value and performing adaptive regulation and control of a response period, preferentially guaranteeing the response speed and continuity, and finally performing a text generation verification link. The control timeliness of the knowledge index generated by retrieval enhancement and the text generation is improved, and the problem that the control timeliness of the knowledge index generated by retrieval enhancement and the text generation is low in the prior art is solved.

The invention belongs to the technical field of environment monitoring, and particularly relates to a condensable particulate matter generating system. The system is composed of a gas source unit, a flow control unit, a humidification module, an aerosol generation unit, a mixing unit, a heating decomposition unit, a heat preservation unit, an absorption calibration module and a CPM sampling system which are connected in sequence. The gas source unit is a nitrogen source, the flow control unit realizes accurate regulation and control of carrier gas flow, the humidification module supports multiple humidification modes such as a humidifier or an aeration bottle to adapt to different humidity requirements, and the aerosol generation unit can switch generation modes such as a Bernoulli principle mode and an ultrasonic wave mode. The mixing unit realizes in-situ uniform mixing of aerosol through a conductive black carbon tube, the thermal decomposition unit completes decomposition of the aerosol through a tubular furnace, the thermal insulation unit prevents a gaseous precursor from being condensed in advance during transmission, and the absorption calibration module verifies and calibrates the CPM generation concentration. The system can stably generate CPM with specific components, and is low in cost, high in efficiency, flexible, environment-friendly and safe.

The utility model relates to the technical field of wave sensors, in particular to a buoy wave sensor which comprises a sensor body, a sheath is arranged on the side face of the sensor body, a first data line connected with the sensor body penetrates through the sheath, one end of the sheath is fixedly connected with a conical head, and the other end of the sheath is fixedly connected with a second data line. A first conical surface is arranged on the outer surface of the conical head; the conical head is inserted into a groove in one end of the sleeve, and the inner surface of the groove is a second conical surface; a plurality of first sealing rings are fixedly arranged on the second conical surface; the distance between the first conical surface and the second conical surface is gradually increased in the direction that the cross section area of the conical head is gradually reduced; and the socket of the first data line passes through the conical head and is elastically connected with the plug of the second data line in the groove. The corrosion probability of the socket and the plug can be obviously reduced, and the maintenance period of the sensor main body is prolonged.

This invention discloses an underwater maintenance-free bearing assembly, belonging to the field of bearing sealing technology. The bearing assembly includes a bearing housing (1), a retaining ring (2), a skeleton oil seal (3), a first pressure block (4), a second pressure block (5), a plug seal (6), a bearing (7), and countersunk screws (31). The bearing housing has a bearing mounting hole (11) in the center, an internal step (13), and retaining ring grooves (14) on both sides. The bearing (7) is installed in the bearing mounting hole (11), the plug seal (6) is installed in the first pressure block (4) and the second pressure block (5), the second pressure block (5) and the first pressure block (4) are sequentially installed in the step (13) and fastened to the bearing housing (1) by countersunk screws (31), the skeleton oil seal (3) is installed in the step (13) and its sides are tightly fitted to the first pressure block (4), and the retaining ring (2) is installed in the retaining ring groove (14). This invention effectively prevents water and sediment intrusion through a multi-layered sealing structure, reduces manufacturing costs through integrated design, has a long maintenance-free cycle, and is suitable for underwater environments.

The utility model relates to a sealing structure technical field of crushing equipment, concretely relates to an oil gas sealing structure for airflow mill grading and mechanical crushing grading, aims at solving the problem that the sealing structure is affected by particle and leads to poor sealing effect. Including spindle and bearing seat, and the bearing piece, oil baffle, elastic baffle, bearing cover and sealing ring that are coaxially assembled with the spindle, still include labyrinth ring, the air passage is opened in the labyrinth ring, and the air inlet pipe is connected on the bearing seat, and the air inlet pipe is communicated with the air passage. The labyrinth ring is assembled in the bearing seat end portion and prevents the particle from entering the sealing structure, and the air passage is opened in the labyrinth ring, and the gas is injected into the air passage, prevents the dust particle from entering the sealing gap, thereby reduces the erosion and pollution of the particle to the bearing piece and sealing structure.

The utility model discloses a water -cooled coal bed gas hydraulic fracturing system, this system passes through integrated high -efficient water -cooling unit, effectively solved traditional coal bed gas hydraulic fracturing system in air -cooled heat dissipation efficiency low, energy consumption is high, loud and frequent maintenance technical problem. System adopts plate heat exchanger and circulating cooling water system, has realized the accurate control of hydraulic oil temperature, has improved system energy efficiency and operating stability significantly, especially suitable for coal mine underground limited space and high dust environment. The system has heat dissipation efficiency high, compact structure, energy consumption is low and maintenance cycle long etc. advantage, provides strong support for the efficient exploitation of coal bed gas.

This utility model relates to the field of dust collector technology, and in particular to a water curtain dust collector, comprising a tower body, a Venturi tube connected to the lower side wall of the tower body, a screen installed on the inner side of the lower part of the tower body, several baffles installed below the screen, and a water collection tank connected to the lower end of the tower body. Both the screen and the baffles are hollow. A sedimentation tank is connected to the water collection tank. The upper outer wall of the sedimentation tank is connected to the screen and baffles via a water supply and heating pipeline. The outlets of the screen and baffles are connected to the water collection tank via a return water pipeline. This water curtain dust collector, by using a hollow screen and baffles and constructing a water circulation heating system using a water collection tank, sedimentation tank, water supply and heating pipeline, and return water pipeline, achieves several advantages. Firstly, the heated circulating water flows within the screen and baffles, increasing their surface temperature and effectively preventing the solidification and accumulation of sticky particles due to temperature reduction, thus solving the problem of flow channel blockage and extending the equipment maintenance cycle.

This utility model discloses a multi-dimensional composite fire detector, belonging to the field of fire detectors. It includes a front shell with a battery slot containing a battery, and a battery cover covering the battery. The multi-dimensional composite fire detector of this utility model, through its flame PCB and control board, allows for assembly by first installing a bracket onto a rear shell, causing magnets one and two to attract each other, and then installing the front shell into the rear shell to complete the installation. When the fire detector detects smoke reaching a predetermined threshold, an alarm sounds. The flame PCB enables timely detection of flame information, enhancing the safety performance of the fire detector. This fire detector effectively distinguishes between fire smoke and facilitates cleaning of dust covers, and enables multi-dimensional cross-verification in the early stages of a fire.

The invention relates to the field of sludge treatment, in particular to a negative pressure sludge discharger device which comprises a bottom plate, semicircular covers, a filter pressing mechanism, a discharging mechanism, a cutting mechanism, an overflow mechanism, a hydraulic pump and a conveying belt mechanism, the semicircular covers are symmetrically arranged at the top of the bottom plate, the two semicircular covers are connected through a hinge, and one semicircular cover is connected with the bottom plate and the filter pressing mechanism. Cascade precipitation and automatic scraping cleaning of fine particles in filtrate are achieved through the V-shaped grooves in the overflow plate, anti-blocking is conducted on the filter cloth through negative pressure formed by rapid rising of the filter pressing block, and when mud cakes are discharged, sealing and leakage prevention are achieved through the leakage-proof plate, and even discharging is achieved through the inclined face of the cutting plate and the cutting groove. Therefore, the technical problems of sealing failure and frequent maintenance caused by easy blockage of filter cloth, easy blockage of a filter screen and residual discharged materials of the existing equipment are effectively solved, and the operation continuity and the dehydration efficiency of the device are improved.

The utility model discloses an automatic sludge detection and pollution discharge device for a water seal tank of a converter purification system, and relates to the field of pollution discharge devices for steelmaking metallurgical equipment.The automatic sludge detection and pollution discharge device comprises a water seal tank assembly, two supporting rods are fixedly connected to the bottom of the water seal tank assembly, and a discharging assembly is arranged at the bottom of the water seal tank assembly; a tight assembly is arranged on one side of the water seal tank assembly; the water seal tank assembly comprises a water seal tank cavity box, a discharging through hopper is arranged at the bottom end of the water seal tank cavity box, a tank cover is connected to the top of the water seal tank cavity box in a clamped mode, a pneumatic adjusting valve is arranged on the top of the tank cover, an intelligent controller is arranged on one side of the water seal tank cavity box, and an ultrasonic mud level meter is arranged in the water seal tank cavity box. The interior of the water-sealed tank cavity box is rotationally connected with a crushing blade assembly; according to the arrangement, sludge detection and treatment effects are added on the water seal tank, and the main purposes of solving sludge accumulation of the device, preventing the whole device from being blocked, avoiding influence on normal work of the device and improving the working efficiency of the device are achieved.

The invention discloses a four-door two-cover flexible trimming die switching system, and relates to the technical field of automobile manufacturing equipment.The four-door two-cover flexible trimming die switching system comprises a lightweight trimming die unit and a switching mounting base, and the lightweight trimming die unit is detachably mounted on the switching mounting base through a robot grabbing device; the bottom of the light-weight edge rolling die unit is provided with a gun changing disc butt joint part, and the switching installation base is provided with an electric quick-plug device and a positioning locking device which are matched with the gun changing disc butt joint part. According to the invention, a split type framework of the lightweight trimming die unit and the switching mounting base is adopted, and a full-automatic die switching system is constructed through a robot automatic grabbing and gun changing disc rapid butt joint technology. A gun replacing disc butt joint part arranged at the bottom of the die body, an electric quick-plug device of the base and a positioning locking device form a standard interface, and a robot is matched for accurate grabbing and positioning, so that the die replacing process is optimized from traditional manual hoisting calibration to machine autonomous recognition butt joint.

The invention belongs to the technical field of optical thin film detection, and particularly discloses an optimization method of an optical thin film detection system, which is used for solving the problems of weak interference resistance, poor pollution resistance and insufficient complex scene adaptation of the traditional detection system. The method comprises the following steps: pre-selecting a light needle beam with a needle-point-shaped cross section as a light source, defining a source plane light field, and constructing a limited energy generation condition through apodization operation; setting a plurality of groups of regulation and control parameters for three transmission states of diffraction, non-diffraction and focusing; building an experiment system to generate a directional light needle light beam, simulating pollution and interference scenes, and collecting light field data of different transmission nodes before and after interference; and quantizing the light field similarity through a witness function, screening an optimal regulation and control parameter, and integrating the optimal regulation and control parameter to a detection system. According to the invention, the anti-interference and information stability are improved from the light source essence, the method is adaptive to ultrathin, multi-layer thin film and complex environment detection, the detection precision and long-term stability are obviously improved, and both practicability and economy are taken into account.

The invention discloses a special ultrahigh corrosion-resistant high-pressure cast aluminum alloy for marine equipment and a preparation process of the special ultrahigh corrosion-resistant high-pressure cast aluminum alloy. The aluminum alloy is designed by taking aluminum as a matrix and synergistically adding silicon, magnesium, various transition elements and rare earth elements of cerium and lanthanum in a specific proportion. The preparation process sequentially comprises the steps of smelting and refining, high-pressure die casting, heat treatment and surface treatment. Through the unique component design and the systematic combination of the whole-process technology, the high-pressure casting manufacturability of the alloy is kept, meanwhile, the marine corrosion resistance and the mechanical property are comprehensively improved, and the alloy is suitable for structural parts such as marine ship engine parts in the severe environment.

The utility model discloses a corrosion-resistant vacuum solid-liquid separation oil mist filtering and purifying device which comprises a supporting frame, an oil inlet pipe is arranged on the supporting frame, one side of the oil inlet pipe is connected with a coarse filter, one side of the coarse filter is connected with a vacuum tank, one side of the vacuum tank is connected with a fine filter, and the fine filter is connected with a vacuum pump. One side of the fine filter is connected with an oil outlet pipe; the utility model relates to the technical field of oil mist filtration and purification, in particular to a corrosion-resistant vacuum solid-liquid separation oil mist filtration and purification device, through a rough filtration-vacuum water removal-fine filtration three-stage purification system, the solid residual quantity is reduced, a cleaning control assembly integrates rotary bristles and negative pressure linkage, dynamic cleaning of spray holes of an atomizer is achieved, the blocking rate is reduced, and the oil mist filtration and purification efficiency is improved. The temperature of the vacuum heating module is accurately controlled to 75 DEG C, the condensation tank is combined to quickly separate water vapor, and the negative pressure unit is modularized, so that the maintenance period is prolonged, the energy consumption is reduced, secondary pollution is completely eradicated through a full-process closed structure, and the system is suitable for high-precision industrial scene requirements.

The utility model discloses a transmission assembly, a power transmission device and a vehicle, the transmission assembly comprises a power shaft, a driven gear, a transmission part and a buffer part, a driving gear is arranged on the power shaft, the driving gear is suitable for being meshed with a power output device, a matching section is formed on the power shaft, and the driven gear is arranged on the matching section in a sleeving mode; the driven gear can rotate relative to the matching section, a first circumferential matching part is arranged on the driven gear, the transmission part is arranged on the matching section and rotates synchronously with the power shaft, a second circumferential matching part is arranged on the transmission part, and the second circumferential matching part and the first circumferential matching part are arranged correspondingly. When the driven gear moves in the circumferential direction relative to the matching section, the first circumferential matching part and the second circumferential matching part get close to each other or get away from each other, the buffering piece is connected between the first circumferential matching part and the second circumferential matching part, and the buffering capacity of the transmission assembly can be improved.

The utility model relates to flue gas treatment technical field, and disclose a kind of flue gas desulfurization and denitrification spray tower, including including spray tower, the spray tower is from lower to upper by air inlet section, shell and exhaust section, the left side of air inlet section is provided with air inlet pipe, the left side of air inlet section is fixedly connected with drain valve, the right side of air inlet section is provided with filter assembly, the right side of filter assembly is provided with spray assembly;The left and right inner walls of shell are respectively fixedly connected with plug rail, and the linkage structure (L type threaded rod+butterfly nut limit) of plug rail type filler frame and detachable sealing plate is linked, the quick disassembly of filler layer is realized, and only external operation is needed when replacing, entire filler frame can be extracted horizontally, personnel is not needed to enter spray tower internal operation, eliminate the security risk that traditional filler replacement needs aerial work or in-depth tower, shorten maintenance time simultaneously, reduce labor intensity, especially applicable to the working condition of frequent replacement filler.

This utility model relates to the field of chemical wastewater post-treatment equipment, specifically to a filtration device for desalination, which solves the problem of high water consumption in existing filtration devices. It includes a first filter tank and a second filter tank arranged sequentially for filtering a first raw liquid and a second raw liquid, respectively. The purity of the first raw liquid is lower than that of the second raw liquid. The second filter tank includes a second tank body and a second tank cover. The upper part of the second tank body has a secondary inlet for the second raw liquid to enter, and the lower end has a secondary outlet. Filter bags for filtration are installed inside the second tank body. The first filter tank includes a first tank body and a first tank cover. The upper part of the first tank body has a primary inlet for the first raw liquid to enter, and the lower end has a primary outlet. Filter plates for flocculation filtration are installed inside the first tank body, and a discharge trough is provided at the lower end of the filter plates. A cleaning nozzle is installed inside the first tank body, and the cleaning nozzle is connected to the supply source of the second raw liquid.

This utility model discloses a precision embedded fully enclosed linear module, including a base plate. Two side plates are welded to the upper end of the base plate. Steel plates are welded to both sides of the two side plates, and the two steel plates are welded to the base plate. Guide grooves are provided on adjacent sides of the two side plates. A moving block is slidably connected between the two side plates. Protruding portions are provided on both the front and rear sides of the moving block, and these protruding portions are slidably connected to the two guide grooves. A placement platform is fixedly connected to the upper end of the moving block, and a through channel is provided within the placement platform. This utility model's linear module is completely enclosed from the machining workshop, thus preventing dust and other debris from adhering to the surface of the transmission components and reducing accuracy. It also prevents debris generated during the operation of the transmission components from entering the machining workshop and can collect debris generated by transmission wear, ensuring transmission accuracy.