439results about How to "Reduce entry" patented technology

The invention discloses a dry-type transformer. The dry-type transformer comprises a transformer body, a housing, a bottom plate and a fan, wherein the transformer body is formed by a plurality of groups of encapsulated windings in an array mode, a supporting rod is arranged at the bottom of the transformer body and allow the encapsulated windings in each group to connect with each other, the supporting rod is arranged in a crossed mode, and first threaded holes penetrate the supporting rod; the transformer body is integrally arranged in the cavity of the housing, and the bottom of the transformer body is fixedly positioned with the bottom plate, and meanwhile, the transformer body is arranged in the housing through the fan, the whole device achieves dispelling the heat in the transformerbody, and the graphite material of housing side is protruding simultaneously, and the heat from the housing is diffused quickly, and the protrusion of the array distribution can reduce the air great dust entering the inner wall of the housing through air vents.

The application belongs to the technical field of electrical equipment, and discloses an air compressor sealing structure and an air compressor. The air compressor sealing structure comprises a connecting sleeve, a first gas seal assembly and a second gas seal assembly. The connecting sleeve is sleeved on the rotating shaft of the air compressor, and has opposite first and second ends. The first gas seal assembly is arranged at the first end, and is sleeved on the rotating shaft and connected with the bearing of the rotating shaft to seal the gap between the first end and the rotating shaft by means of sealing gas. The second gas seal assembly is arranged between the connecting sleeve and the rotating shaft and at the second end to seal the gap between the second end and the rotating shaft by means of water vapor. The connecting sleeve is provided with an exhaust hole between the first gas seal assembly and the second gas seal assembly. In this way, the possibility of gas contacting the bearing is reduced, and the possibility of damage to the bearing is reduced, thereby effectively improving the reliability of the air compressor sealing structure and enabling the air compressor to operate reliably for a long time.

This invention discloses a method for preparing high-purity oxygen-free copper, relating to the field of metallurgical technology. The method includes multi-stage electrolytic refining, gradient-heating vacuum melting, inert gas-protected refining, electron beam melting, hydrogen plasma arc melting, directional solidification, and post-treatment steps. The multi-stage electrolytic refining utilizes a specific component electrolyte and periodically commutated current; vacuum melting is combined with bidirectional electromagnetic stirring; inert gas-protected refining is combined with a gradient reduction composite covering agent; electron beam and hydrogen plasma arc melting achieve deep purification and deoxidation; and directional solidification and two-stage annealing ensure product performance. The high-purity oxygen-free copper prepared by this invention has a conductivity of 102.3% IACS, a copper content ≥99.9999%, and an oxygen content <1.0 ppm. It exhibits high purity, low oxygen content, and excellent conductivity. The process is stable and controllable, making it suitable for high-end electronics applications.

The utility model provides a modified star-shaped cinder valve. The modified star-shaped cinder valve comprises a shell, an impeller, a driving motor, a baffle assembly and a plugging assembly. The impeller is arranged in an inner cavity of the shell and comprises a rotating shaft and a plurality of blades, the driving motor is in transmission connection with the impeller, the baffle assembly comprises two baffles fixedly connected in a feeding port of the shell, an inlet is formed between the two baffles, and the plugging assembly comprises a sealing plate connected between the outer ends of every two adjacent blades. The two partition plates are connected to the outer side of each sealing plate, a material receiving groove is formed between the two partition plates, and the material receiving grooves sequentially pass through the position below the inlet along with rotation of the impeller; the baffle assembly can reduce entering of materials, the blocking assembly can reduce the conveying amount of the materials, and therefore the requirement for the small conveying amount of the materials is met, and the motor frequency does not need to be reduced.

This utility model relates to the field of stretching instruments, and more particularly to a stable stretching structure for a stretching instrument. The technical problem is that existing stretching instruments use clamping structures that do not hold the fabric tightly, allowing knitted fabrics to easily slip off the clamps during stretching. The technical solution is a stable stretching structure for a stretching instrument, comprising a body, a through groove, a tension sensor, a fixed end platform, a linear motor and a moving end platform, a dust curtain, a stretching fixing component, and a measuring scale. This utility model replaces the clamps on the original stretching instrument with a stretching fixing component, providing better fixation for both ends of the knitted fabric and preventing it from easily slipping off during stretching, thus ensuring the normal conduct of the stretching test. The dust curtain reduces the possibility of external dust entering the machine body during use, preventing contamination of internal electrical equipment. This solves the problem of existing stretching instruments using clamping structures that do not hold the fabric tightly, allowing knitted fabrics to easily slip off the clamps during stretching.

The utility model relates to a kind of exhaust structure of motor gear box for vehicle, including exhaust valve in gear box, labyrinth, backflow plate and several baffle, backflow groove is formed between backflow plate and gear box inner wall, baffle makes several intercommunicating chambers in gear box, chamber is between labyrinth and backflow groove, chamber is communicated with backflow groove, chamber is also communicated with labyrinth, exhaust valve is communicated with labyrinth, backflow groove is equipped with backflow port with gear box interior communication in both ends, oil liquid into chamber can flow through backflow groove and return in gear box, after the air pressure in gear box rises, gas is discharged from exhaust valve via labyrinth.The utility model is by being equipped with baffle, reduce the oil liquid that splashes when gear rotates enters labyrinth, also reduce the oil liquid reaching labyrinth entrance, effectively avoid the oil leakage situation of exhaust valve, oil liquid in chamber flows through backflow groove and returns in gear box, reach the effect of oil liquid backflow;Gas can avoid gear box oil leakage after being discharged.

According to the high-drainage-performance rotary vane gas-liquid separator, millimeter-level drainage holes are formed in the middle-lower portion of an inner cylinder in a zoning mode according to the liquid film forming characteristic, and micron-level hydrophilic holes are formed in the high position of the inner cylinder to replace a circular ring between the top of the inner cylinder and a gas outlet cylinder for drainage; and the water drainage performance of the steam-water separator is improved by combining with an inclined microneedle one-way conveying surface, liquid film breakage and secondary liquid drop entrainment are reduced, and the gas amount in drained water is reduced. The drainage holes with different sizes are distributed in the inner cylinder in a targeted manner, so that a wall surface liquid film is discharged to the outer cylinder in real time, the wall surface liquid film is prevented from being accumulated, secondary liquid drops formed by shredding the liquid film by gas are reduced, and secondary entrainment and overall pressure drop of the broken liquid drops of the liquid film in the inner cylinder are reduced; meanwhile, gas entering the outer barrel descending channel through the drainage hole is reduced, the amount of gas entrained by liquid in the outer barrel descending channel is reduced, and therefore the gas-liquid separation efficiency is improved.

The application relates to a wafer drying device and a wafer drying system, the wafer drying device comprising a wafer carrying and collecting unit and a wafer drying unit, the wafer carrying and collecting unit comprising a wafer carrying table; the wafer drying unit comprising a wafer front surface drying assembly and a wafer back surface drying assembly, the wafer front surface drying assembly and the wafer back surface drying assembly each comprising a circular drying sheet and a circular ring drying sheet rotatable around the same center, the circular ring drying sheet being sleeved around the circular drying sheet, a plurality of air injection holes being arranged on the circular drying sheet, and a plurality of air suction holes being arranged on the circular ring drying sheet; when drying a wafer arranged on the wafer carrying table, the wafer back surface drying assembly and the wafer front surface drying assembly are arranged in parallel on two sides of the wafer and rotate relative to the wafer, the rotation axes of the wafer back surface drying assembly and the wafer front surface drying assembly pass through the center and extend in a direction perpendicular to the surface of the wafer, the air injection holes blow gas to the surface of the wafer, and the air suction holes absorb the blown gas, so that the probability of bubbles appearing on the edge of the wafer is reduced.

The application relates to the technical field of compound fertilizer production, in particular to a roller inoculating machine for compound fertilizer production and processing and a processing technology thereof, which comprises the roller inoculating machine, the rear side of the roller inoculating machine is fixedly connected with a material pre-processing mechanism, and the front side of the material pre-processing mechanism is fixedly connected with a crushing mechanism. The pre-dispersion crushing mechanism is arranged, pre-extrusion crushing of caked raw materials is synchronously completed in the process of quantitative feeding, the caked raw materials stuck in the inverted convex filter plate mesh hole can be fully extruded by the extrusion plate matched with the extrusion frame, and only the finely crushed raw materials which have completed pre-dispersion can fall through the filter plate mesh hole and enter the next process, so that the probability of large-volume caking entering the crushing mechanism is reduced from the source, the operation load of the subsequent crushing mechanism is effectively reduced, equipment wear is reduced, energy consumption is reduced, and the service life of the equipment is prolonged. The quantitative weighing and feeding structure is arranged, and quantitative uniform feeding of the compound fertilizer raw materials is realized.

The invention discloses a robot navigation method based on reinforcement learning security constraint and danger perception, and relates to the technical field of robots and artificial intelligence, and the robot navigation method comprises the following steps: when a robot is controlled to execute a navigation task in a target area, using a security filter SF to perform security constraint on the execution action of the robot; and when the robot executes the navigation task, the danger perception virtual robot HAVR is utilized to obtain experience in the dangerous area so as to enhance the ability of the robot to explore in the dangerous area. The action generated by reinforcement learning can be dynamically adjusted, so that the action meets the safety constraint, and the safety of the robot in the reinforcement learning training process is further enhanced; by introducing the HAVR with risk-driven rewards, the robot can still obtain experience in a dangerous area while introducing security constraints, and the exploration security of the robot is further enhanced while the performance of the model after convergence is ensured.

The utility model relates to electric ship field, and disclose a kind of BMS mainframe structure for electric ship, including shell, the both sides of shell are equipped with positioning mechanism, the front of shell is equipped with protection mechanism, the positioning mechanism includes two locating plates, two the both sides of shell are movably installed respectively in locating plate, the top of locating plate is fixedly installed with two limit sleeves to front and rear end, and the top of locating plate is movably installed with telescopic column respectively and located in two limit sleeves, the bottom of telescopic column is fixedly installed with stud, and the top of telescopic column is fixedly installed with knob. Through locating plate and stud, the quick connection and fixation between shell and equipment are facilitated, bolt connection can be used simultaneously, and external scratching is reduced when transporting and carrying;Through fender and contraction groove, the protection of shell inside mainframe is improved, external dust is reduced to enter, and the connection of cable is facilitated.

The utility model relates to the technical field of medicine spraying machine, concretely to a kind of spraying protective device of agricultural self-propelled medicine spraying machine, including medicine spraying machine equipment, the medicine spraying machine equipment includes rack, control box, medicine box, spraying system and self-propelled mechanism, and the self-propelled mechanism one side and the top inner wall of rack are fixedly installed with protection assembly between, and protection assembly includes the protection top plate fixedly installed in the top inner wall of rack and the L type side guard board fixedly installed in the one side outer wall of self-propelled mechanism, the both ends of L type side guard board are all set up with telescopic slot of L type, and the inner wall of telescopic slot is all inserted with telescopic plate;The utility model forms relatively closed spraying space, effectively blocks the medicine sprayed to adjacent area diffusion, effectively isolates spraying system and self-propelled mechanism simultaneously, reduces the possibility that medicine enters self-propelled mechanism inside, prolongs overall service life, also can flexibly adjust the extension length of telescopic plate according to actual medicine spraying operation needs, changes protection range.

This invention provides an antistatic and privacy-protecting polarizing film and its preparation process, belonging to the field of polarizing film preparation technology. The preparation process includes the following steps: preparation of an antistatic agent; preparation of a modified adhesive; preparation of a composite polarizing film; and preparation of the polarizing film. This invention introduces an antistatic agent and POSS-modified graphene oxide into the modified adhesive, making the adhesive layer a conductive medium connecting multiple layers such as the polarizing film (PVA), TAC layer, and privacy film, forming a cross-layer conductive path. This avoids static electricity accumulation at the interface, improving the antistatic effect. Boric acid is first used to crosslink the PVA film, followed by glyoxal crosslinking, achieving long-term reliability of the polarizing film under high temperature and high humidity environments.

A kind of train bottom photographing device based on miniaturization TFDS system, it relates to track traffic equipment fault detection technical field.The utility model discloses to solve the problems of many and large size of prior art TFDS system equipment box, time-consuming and laborious installation, and the influence of work section big machine tamping.The utility model discloses a caisson box body, a door assembly and multiple photographing modules, caisson box body is fixedly connected on train track as sleeper, door assembly is arranged on the upper end surface of caisson box body, multiple shooting windows are arranged on door assembly, multiple photographing modules are all arranged in caisson box body, and photographing module and shooting window are set one by one, photographing module is photographed through shooting window when operating.The utility model is used for railway image detection system.

The utility model relates to the technical field of rotating slip rings, in particular to a multi-channel gas-electric-hydraulic rotating slip ring which comprises a sliding seat and a sliding sleeve which are connected in a sleeved mode, three channels corresponding to each other are formed in the sliding seat and the sliding sleeve, and sealing assemblies are installed at the positions, corresponding to the two sides of each channel, in the sliding seat and the sliding sleeve. A plurality of micropores are formed in the middle positions, corresponding to the sealing assemblies, of the sliding sleeve at equal intervals. According to the utility model, as the micropores communicated to the outside of the sliding sleeve are formed in the positions of the sealing elements, when leakage is caused by failure of the sealing elements, leaked gas and liquid can simultaneously enter the micropores when penetrating through the sealing elements, and further, the leaked gas and liquid can be effectively observed outside the sliding sleeve, so that whether leakage occurs or not can be quickly and simply judged.

The utility model discloses a VOCs organic waste gas treatment device which comprises a carbon box, clamping seats are fixedly connected to the two sides of the inner side face of the carbon box, activated carbon adsorption plates are clamped in the clamping seats, and a conveying pipe is fixedly connected to the bottom of the inner side face of the carbon box. According to the VOCs organic waste gas treatment device, an activated carbon adsorption plate, a fresh air heat exchanger, a fan and a combustion furnace are arranged, the activated carbon adsorption plate adsorbs organic components in waste gas into micropores of activated carbon for concentration, filtered clean gas reaches the standard and is discharged, and fresh air is heated to a preset value through the fresh air heat exchanger and then enters a carbon box through a second air inlet pipe; organic waste gas subjected to desorption treatment is purged, meanwhile, VOCs organic waste gas is conveyed into a combustion furnace through a gas collecting pipe and a gas collecting hood through a draught fan, the VOCs organic waste gas is decomposed into carbon dioxide and water vapor after being subjected to catalytic combustion, and finally the VOCs organic waste gas is conveyed to a fresh air heat exchanger through a connecting pipe to be discharged after being subjected to heat exchange and cooling and reaching the standard, so that an activated carbon adsorption plate can be recycled; and the use cost is reduced.

The application discloses an intelligent dust removal device for waste gas treatment of a coal-fired power plant, and relates to the technical field of waste gas treatment.The device comprises a dust removal box, an air inlet fixedly connected to the side wall of the dust removal box, a filter plate fixedly connected to the inside of the dust removal box, and a filter effect real-time detection mechanism and a dust cleaning and collecting mechanism.The device can reduce unnecessary troubleshooting and maintenance frequency, thereby reducing maintenance cost and time cost, and can maintain or replace the clogged or damaged filter plate in time when the filter plate is damaged, so that the continuous and efficient operation of the spray dust removal system can be ensured, and the overall operation efficiency is improved.Further, the device can avoid long-time use of the filter plate without timely maintenance or replacement, so that impurities and particulate matter can be prevented from entering the spray dust removal system, the cleanliness of water resources is ensured, and the overall performance of the spray dust removal system is improved.

The utility model relates to the technical field of food, and discloses an ice hockey storage device which comprises a box body, a placing assembly is arranged on the inner wall of the box body, a collecting assembly is arranged on the outer wall of the box body, the placing assembly comprises a mounting groove, an ice bucket is mounted on the inner wall of the mounting groove, and a motor is mounted at the bottom of the ice bucket. The ice hockey storage device is provided with a mounting groove, an ice bucket, a motor, a rotating shaft, a mounting seat, a storage tank, a preformed hole, a refrigeration sheet, a radiator, a heat dissipation cover plate, a bucket cover, a feeding hole and a sealing cover, the ice bucket is kept in a low-temperature state through working of the refrigeration sheet, meanwhile, the heat dissipation is conducted on the hot end of the refrigeration sheet through the radiator, and when ice hockey needs to be put in, a worker unscrews the sealing cover, and the ice hockey is put into the ice hockey storage device. The empty storage tank is rotated to the position below the feeding port through rotation of the motor, then the ice balls can be put in, the device does not need to be wholly opened, entering of hot air is reduced, adhesion caused by melting of the ice balls is avoided, the structure is simple, operation is convenient and fast, and the requirements of people are met.

The present application belongs to the field of power system intelligent inspection and computer vision technology, and provides a kind of transmission line hidden danger target detection test adaptive method and system, obtains inspection image, utilizes pre-training detector to carry out forward inference to the inspection image, generates original prediction set, and the original prediction set includes prediction frame coordinates, class label and confidence score;Geometric verification is carried out, and reasonable geometric prediction set is obtained;Carry out spatial neighborhood clustering, obtain multiple candidate clusters, calculate the scale dispersion of the area of the prediction frame in each candidate cluster, group according to the class label, dynamically cluster the prediction frame in the group, perform weighted average on the prediction frame coordinates with the confidence score as the weight, calculate the fusion confidence, obtain the refined pseudo label set, use it as the supervision signal, calculate the detection loss, and iteratively update the model parameters through the optimization algorithm until the iteration number is satisfied.The present application improves accuracy, versatility and engineering reliability.

The invention relates to the technical field of bobbin winder head picking devices, and discloses a broken yarn recycling device and a head picking device. The broken wire recovery device comprises a wire return box provided with an air inlet and an air outlet, the air inlet corresponds to the head picking device body, and the air outlet is used for being connected with negative pressure equipment; the adsorption mechanism comprises a power source and a plurality of metal plates, the metal plates are arranged in the tobacco shred returning box in parallel at intervals, and the power source is connected with the metal plates so that an electrostatic field can be formed between every two adjacent metal plates; and the intercepting net is located in the shred returning box, is arranged in the electrostatic field and is used for intercepting the broken shred adsorbed by the metal plate. The head picking device comprises a head picking device body and the broken wire recovery device in the first aspect, and the head picking device body is arranged corresponding to the air inlet. By means of the technical scheme, the technical problems that according to a broken wire recovery device in the prior art, broken wires are prone to being wound, accumulated and hung on the inner wall of a pipeline, blocking points are formed, and energy consumption is increased are solved.

A hidden drainage ditch system of a building curtain wall comprises a drainage ditch, a cover plate is installed on the drainage ditch, a water inlet is further formed in the upper portion of the drainage ditch, and the hidden drainage ditch system further comprises a filtering assembly arranged at the water inlet. The filtering assembly further comprises a primary filtering piece and a secondary filtering piece; the primary filter part comprises a barrier plate mounted at the water inlet, and a drainage gap for water flow to pass through is formed between the barrier plate and the water inlet; the secondary filtering piece comprises a filtering plate and a plurality of leakage holes formed in the filtering plate. According to the utility model, the blockage problem of the drainage ditch can be further relieved, and the maintenance intensity of the drainage system can be effectively reduced, so that the reliability and stability of the drainage system are enhanced.

This utility model relates to the field of protective cover technology, specifically a protective cover for connecting a rebar threaded sleeve. It includes a protective cover body, with a sealing plug and a sealing sleeve fixedly connected to the left side wall of the protective cover body. The sealing plug is located in the middle of the left side wall of the protective cover body, and the sealing sleeve is located outside the sealing plug. The protective cover body is inserted into one end of the rebar threaded sleeve via the sealing plug. In operation, the sealing plug is fully inserted into the exposed end of the rebar threaded sleeve. The threaded sleeve is rotated counterclockwise to move to the left along the outer wall of the threaded tube. The threaded sleeve drives the connecting rod and the compression ring to move to the left. The compression ring compresses the circular rubber strip and the sealing sleeve, causing the sealing sleeve to deform and tightly adhere to the outer wall of the rebar threaded sleeve. This reduces the gap between the inner wall of the sealing sleeve and the outer wall of the rebar threaded sleeve, forming an outer seal and reducing the entry of external dust and moisture into the rebar threaded sleeve.

The application relates to the technical field of air conditioners, and discloses a wind guide structure and a ceiling air conditioner. The wind guide structure provided by the application comprises a machine body, a wind channel and an air outlet are arranged on the machine body, the air outlet is communicated with the wind channel, a first wind guide ring is movably arranged on the machine body through a first lifting mechanism to open and close the air outlet, a second wind guide ring is movably arranged between the machine body and the first wind guide ring through a second lifting mechanism, the second wind guide ring defines an air outlet direction when the first wind guide ring opens the air outlet and the second wind guide ring is located in a first height interval, and the first wind guide ring and the second wind guide ring jointly define the air outlet direction when the first wind guide ring opens the air outlet and the second wind guide ring is located in a second height interval. The air outlet can pass through the second wind guide ring and at least part of the first wind guide ring in sequence, so that the air outlet can be uniformly sent to each position in an indoor space, and the problem of poor air sweeping effect of the ceiling air conditioner is solved.

The invention discloses a method for comprehensively recovering valuable elements from waste acid, the waste acid contains copper, nickel and arsenic, the concentration of copper in the waste acid is 25g / l-70g / l, the concentration of arsenic in the waste acid is 5g / l-50g / l, the concentration of nickel in the waste acid is 2g / l-25g / l, and the concentration of acid in the waste acid is 70g / l-220g / l, and the method comprises the steps of evaporative crystallization, membrane dialysis, primary neutralization and secondary neutralization. According to the method, the copper recovery rate is not lower than 98%, the nickel recovery rate is not lower than 90%, and the arsenic recovery rate is not lower than 80%. According to the invention, neutralization is carried out after evaporative crystallization and membrane dialysis, so that the alkali consumption can be reduced by 40-60%, and the treatment cost is reduced.

The utility model belongs to the technical field of roadbed protection, and discloses a roadbed protection and drainage integrated structure which is characterized in that the roadbed protection and drainage integrated structure comprises a side slope and a plurality of water collecting grooves formed in the side slope, and filter screens are vertically and fixedly installed at the bottom of the side slope and one sides of the water collecting grooves; two vertical plates are vertically and slidably connected into each water collecting tank, a top plate is fixedly mounted at the tops of the two vertical plates in each group, rotating plates are rotatably connected to the bottoms of the top plates, and tension springs are rotatably connected between the rotating plates and the corresponding vertical plates. Sediment carried by rainwater is intercepted by the filter screen when passing through the filter screen, so that the silt entering the water collecting tank is reduced, the cleaning frequency is reduced, in addition, the rainwater impacts the rotating plate after penetrating through the filter screen, the rainwater completely falls into the water collecting tank through flow guide of the rotating plate, the situation that the rainwater still scours a side slope located below after being filtered is avoided, and the cleaning efficiency is improved. And the drainage effect is better achieved.

The invention relates to the field of multi-robot cooperative scheduling, and discloses a multi-robot cooperative scheduling unmanned underground mechanical garage system and method, and the system comprises a hardware subsystem which comprises a transfer robot, a parking space frame, a vertical elevator, and an entrance and exit junction area; the control system is deployed in the central control server, and the control system comprises a multi-layer dynamic data grid generation module which is used for constructing a discretized data grid corresponding to a garage physical space; and the central data calculation module is used for continuously updating the data of each data layer in the multi-layer dynamic data grid according to the real-time state of the garage. In the regional congestion degree and traffic control layer, the congestion index is calculated according to the density, the speed variance and the dispersion in the movement direction of the transfer robot, and the task gravitation modulation coefficient is generated, so that the tendency of the robot to enter the crowded region is reduced, the adaptive dispersion of the traffic flow is promoted, and the continuity of garage operation is maintained.

This utility model relates to a solid-liquid separation system and cleaning equipment, including a waste tank and a negative pressure generating device. The waste tank includes a first chamber for storing solid waste and a second chamber for storing liquid waste. The waste tank is provided with a liquid passage connecting the first chamber and the second chamber. The liquid passage is configured to allow liquid waste and airflow to flow simultaneously from the first chamber to the second chamber. The negative pressure generating device acts on the second chamber to generate a migration negative pressure. Driven by the migration negative pressure, a pressure difference is formed between the first end and the second end of the liquid passage, causing the liquid waste in the first chamber to migrate to the second chamber through the liquid passage, thus achieving solid-liquid separation and storage. The solution of this utility model can solve the problems in the prior art where liquid waste is continuously carried into the next stage of the air duct, causing the cleaning equipment to spray wastewater, and the problem of the suction motor being flooded due to liquid waste entering the next stage of the air duct, thus shortening its lifespan.

The utility model discloses a glove box glove flange, including outer ring body, inner ring body and frame board, outer ring body one end has the extension section, and the extension section is used for extending into glove box inside, and inner ring body is screwed with the extension section, and the other end of outer ring body has the fixed cylinder, and the frame board is connected with outer ring body through the cushion block, and the frame board slidingly fits with the movable plate, and the movable plate has the sleeve body, and the sleeve body is provided with movable cylinder, and the movable cylinder outer wall is provided with a plurality of first elastic ring, and a plurality of first elastic ring is opposite with the sleeve body inner wall, and the movable cylinder has the terrace for installing rubber gloves, and the movable plate inboard is equipped with the elastic sealing layer, and the elastic sealing layer is opposite with the fixed cylinder front end, and the movable plate can move along the frame board vertical, is used for driving sleeve body and fixed cylinder butt joint or staggered, can dismount the replacement of rubber gloves, in the process of replacing gloves, effectively avoid glove box inside long -time direct exposure in the air, effectively reduce the entry of external dust and other impurities, make the experimental environment of glove box inside not easy dust interference.

The utility model discloses a door and window lock structure with good dustproof effect relates to the application field of translational system door and window lock, including the lock catch mechanism, the one side of lock catch mechanism is provided with the lock bolt mechanism, the lock bolt mechanism includes first installation shell, the inside movable mounting of first installation shell has the lock tongue piece, the inside of lock tongue piece is provided with the limit slot, the inside movable mounting of limit slot has the limit block, the one side of limit block is connected with the threaded rod, the inside swing joint of first installation shell has the threaded sleeve, the threaded sleeve and threaded rod are connected, the side of first installation shell rotates and has the handle, and the transmission connection of setting reduction gear set is passed to between handle and threaded sleeve. The utility model discloses through setting lock bolt mechanism and lock mechanism combination use, can be fixed to translational window, and lock bolt mechanism simple structure, handle no matter is up or down, and window can be closed directly, but only when handle is down, window can be locked, and when handle is up, window can be opened.

This utility model belongs to the technical field of downhole water distributors, specifically an oilfield water injection nozzle, including a connecting pipe and a replacement device. The replacement device is located on the surface of the connecting pipe, which has four water holes. An regulator is fixedly connected to the surface of the connecting pipe. The replacement device includes a sleeve that fits over the surface of the connecting pipe. A limit post is fixedly connected to the bottom end of the connecting pipe and inserted into the inner surface of the sleeve. A washer is fitted onto the surface of the limit post. A protective device is provided on the surface of the threaded cap. The protective device includes a soft sleeve that fits over the surface of the threaded cap. Multiple locking blocks are fixedly connected to the inner surface of the soft sleeve and inserted into the inner surface of the threaded cap. A cone is fixedly connected to the bottom end of the soft sleeve. By setting up the entire device, it is convenient to maintain the water holes and also reduces the possibility of external debris entering the connecting pipe.