41results about How to "Improve closure" patented technology

A reusable temporary sealing device for post-cast strips includes a metal cover plate, a keel frame, a sleeve, and a lifting and fixing rod. The keel frame is welded above the reinforcing bars of the post-cast strip. A through-hole sleeve is vertically installed at the center of the keel frame. The metal cover plates are placed one by one above the upper keel frame of the post-cast strip according to the positioning lines. The connecting parts of the metal cover plates are processed into insert-shaped folded edges. The metal cover plates are connected at the insert-shaped folded edges by C-shaped flat inserts. After connection, a continuous U-shaped weather-resistant rubber strip is installed on the side of the metal cover plate. The metal cover plate is attached to the keel frame and connected by electric welding. A lifting and fixing rod is installed inside the sleeve. The bent part of the lifting and fixing rod hooks to the reinforcing bars of the post-cast strip. The threaded section of the lifting and fixing rod extends upward from the sleeve. This utility model uses a steel keel and metal cover plate structure, which is sturdy, durable, and highly safe. The sealing plate uses a snap-fit ​​connection, and the edges are made of rubber and pre-pressed to fit the structural surface, making it highly adaptable to the field and providing high sealing performance.

The multifunctional composite sputum scraping structure of the sputum suction pipe connecting seat comprises the sputum suction connecting seat, and the sputum suction connecting seat comprises a cleaning chamber, a sputum suction connecting end and a catheter connecting end; a blocking circular ring is arranged at the joint of the cleaning chamber and the catheter connecting end, a blocking valve is arranged at the joint of the cleaning chamber and the sputum suction connecting end, a sputum scraping part is arranged on the surface of the inner side wall of the blocking valve in a protruding mode and comprises a plurality of protruding blocks, and the protruding blocks are enlarged in the direction close to the center of the blocking valve. By arranging the blocking valve, the air tightness and the sealing performance of the cleaning chamber are improved, sputum adhered to the outer wall of the catheter is scraped off and retained in the cleaning chamber through the blocking circular ring and the sputum scraping part, and therefore the sputum is convenient to clean, and the protruding block is gradually enlarged in the direction close to the center of the blocking valve; therefore, most of the convex blocks can tightly abut against the outer wall of the catheter when the catheter passes through, the effect of scraping sputum on the surface of the catheter is enhanced, potential safety hazards of a patient are reduced, the sealing performance of the blocking valve can be enhanced, and the blocking valve is adaptive to catheters of different sizes.

The utility model relates to a filtering device for amitraz production, which comprises a frame body, a filtering box is fixedly connected in the frame body, a feeding pipe is fixedly connected at the top of the filtering box, a transmission mechanism is arranged at the top of the frame body, a backflow preventing mechanism is arranged in the feeding pipe, and a backflow preventing mechanism is arranged in the backflow preventing mechanism. The backflow preventing mechanism comprises a fixing table fixedly connected to the interior of the feeding pipe, a blocking block is slidably connected to the interior of the fixing table, supporting plates are fixedly connected to the interior of the feeding pipe, and an electric push rod is fixedly connected to the top of the supporting plate on one side. According to the filtering device for amitraz production, through the matched design of the fixing table and the blocking block and the synergistic effect of the electric push rod and the telescopic sleeve, the feeding pipe can be rapidly and accurately closed after materials are conveyed, and amitraz powder is effectively prevented from flowing back to a conveying pipeline on the upper layer of the feeding pipe due to the influence of gravity or airflow; due to the design of the blocking block with the trapezoidal section and the fixing table, the sealing effect is further enhanced, and the reliability of backflow prevention is ensured.

This invention provides a valve prosthesis, comprising: a valve stent, leaflets, and a leaflet connector; the valve stent has a support rod; the leaflet connector includes a folded portion and a connecting portion, the folded portion being used to fold and accommodate the support rod; the connecting portion extends from both ends of the folded portion, and the connecting portion connects to the leaflet, such that the leaflet is connected to the support rod through the leaflet connector. This design improves the leaflet closure and the connection stability between the leaflet and the valve stent, thereby enhancing the overall stability of the valve prosthesis under complex operating conditions.

The application discloses a cold air machine air inlet water blocking structure and a cold air machine. The cold air machine air inlet water blocking structure comprises side plates arranged on both sides of an air inlet of a cabinet body, at least one water blocking plate connected between the two side plates, a heating pipe installed on an end surface of the water blocking plate away from the air inlet, and at least one closing plate connected between the two side plates. The closing plate is arranged on the side of the water blocking plate away from the air inlet, and a heating cavity for accommodating the heating pipe is formed between the closing plate and the water blocking plate. When defrosting operation is performed, the heating pipe can effectively defrost frost layers condensed on the surface of the water blocking plate, and the defrosting efficiency is improved.

This invention belongs to the field of accessory painting, specifically relating to an accessory painting mold and its usage method. The accessory painting mold includes a housing with a cover plate connected to its top. A placement plate, a painting mechanism, and a rotating mechanism are installed on the side of the housing. The placement plate is rotatably connected to the inside of the housing for fixing the accessory. The painting mechanism includes a pump body and a spray plate fixedly installed inside the housing. The rotating mechanism includes a threaded post and a connecting plate. Compared with the prior art, this invention, through the cooperative connection between the cover plate and each component, allows the accessory to be painted in a sealed space, thereby effectively improving the working environment. It also allows for rapid connection and positioning between the connecting post and the placement plate, improving the loading and unloading efficiency of electronic components. Furthermore, it allows for rapid flipping of electronic components during the painting process, effectively improving painting efficiency.

This application provides a mine water blocking device, including a triggering component, a supporting component, a locking component, and a main frame. The triggering component includes a trigger head, a trigger rod, and a counterweight rod. The counterweight rod is sleeved on the outside of the trigger rod, and the trigger rod can move along the inner wall of the counterweight rod. The main frame is hinged to the top of the counterweight rod. The supporting component includes a supporting bone and a movable disc. The supporting bone is connected to the main frame, and one end of the supporting bone is hinged to the edge of the movable disc. The movable disc is sleeved on the outer wall of the counterweight rod. The locking component is disposed inside the movable disc. The movement of the trigger rod triggers the locking component. The movable disc has an open state that unfolds the main frame and a closed state that retracts the main frame. The movement of the trigger head and the trigger rod unlocks the locking structure, causing the movable disc to move, the main frame to unfold, and a water blocking wall to be quickly formed. After the water blocking device is unfolded, the counterweight rod can fall at an angle to the water surface, allowing the main frame to form a skeleton structure, providing a higher support effect for the formation of the water blocking wall.

The utility model discloses meat product vacuum packaging equipment, which relates to the technical field of meat product processing and comprises a rack, rotating connecting rods are rotatably mounted on two corresponding sides of the rack, and a vacuum top cover is rotatably mounted on the rotating connecting rods. Two containing grooves matched with the vacuum top cover are formed in the top face of the rack, and a plurality of packaging mechanisms are arranged in the containing grooves. According to the vacuum packaging equipment for the meat products, the packaging mechanism arranged in the containing groove is utilized, the pulling piece on the heat sealing plate can pull the packaging bag, and therefore the effect that the packaging bag can be driven to be flattened is achieved, and the situation that due to the fact that an opening of the packaging bag is not flat, the packaging bag is not flat is avoided as much as possible. According to the vacuum packaging equipment, the situation that the vacuum packaging is affected is avoided, the sealing effect of meat product packaging is improved, the packaging efficiency is improved, and meanwhile the practicability of the vacuum packaging equipment is improved.

The utility model discloses a water conservancy construction intercepting device, and relates to the technical field of water conservancy intercepting, the water conservancy construction intercepting device comprises a limiting support and a supporting assembly, the supporting assembly provides auxiliary support for an intercepting plate and optimizes stress distribution, stress is decomposed and transmitted through the auxiliary support, so that the force borne by each supporting part is relatively small, and the supporting assembly is arranged on the limiting support. The situation that local stress is too large is avoided, the stability of the intercepting plate is enhanced, the intercepting effect is guaranteed, the supporting assembly can form a folding structure through a plurality of shafts, transferring is convenient, and space is saved; after a limiting support is fixed, multiple sets of connecting plates are inserted into clamping grooves, a rotary supporting frame is parallel to the ground, and a supporting sleeve rod and an auxiliary supporting rod are rotated; a second screw rod penetrates through the connecting plate and is in threaded connection with the intercepting plate to provide top support; an auxiliary support rod is attached to the connecting plate; a third screw rod penetrates through the connecting plate and is in threaded connection with the intercepting plate to provide middle support; and a fourth screw rod penetrates through the fixing frame and is connected with the ground to provide bottom support.

The utility model discloses an elastic metal hard sealing high-performance butterfly valve, and relates to the technical field of butterfly valves, the elastic metal hard sealing high-performance butterfly valve comprises a valve body, a valve seat and a valve plate, the valve seat is sleeved in the valve body, the valve plate is arranged in the valve seat, the front side surface of the valve plate is fixedly connected with a valve shaft, and the valve shaft is fixedly connected with the valve seat. The valve shaft is rotationally connected with the inner wall of the valve seat, an arc-shaped groove is formed in the inner wall of the valve seat, an elastic metal ring is fixedly connected to the inner wall of the arc-shaped groove, the elastic metal ring is conical, and a first mounting ring is fixedly connected to the inner wall of the valve seat; a through groove extending out of the rear side surface of the first mounting ring is formed in the front side surface of the first mounting ring, the sealing performance of the valve plate can be improved by means of elasticity of the elastic metal ring when the valve plate is closed, meanwhile, the sealing performance of the valve plate can be further improved by means of the sealing pressing ring, leakage is avoided, and meanwhile the elastic metal ring is arranged in a conical shape. And the resistance when the valve plate is closed can be effectively reduced.

The utility model discloses a sampling device for chemical waste gas detection, relates to the technical field of chemical waste gas detection, and aims to solve the technical problems that when a plug of the current sampling device is pulled out of an opening of a waste gas storage tank, external air enters, a waste gas sample is diluted, and the detection accuracy is influenced. Comprising a sampling pipe and an air exhaust rod installed in the sampling pipe, a sampling head is fixedly installed at the lower end of the sampling pipe, a plugging piece for plugging an opening of the sampling head is fixedly installed in the sampling pipe, the sampling head comprises a connecting pipe, and a communicated insertion pipe is integrally formed at the lower end of the connecting pipe; according to the utility model, through the matching of the sampling head and the plugging piece, when the sampling head is inserted into the opening of the waste gas tank, the convex block drives the baffle plate to move upwards through the extrusion of the pipe opening, so that the plugging plate is pushed to move upwards to be separated from the bottom of the inner cavity of the connecting pipe, and the communication effect is achieved; and the exhaust gas extraction sealing performance is improved.

This utility model relates to the field of hazardous chemical safety, specifically to a hazardous chemical anti-tipping and diffusion device, including a box body for supporting the overall device. A door is located on the right side of the box body, and a storage tank is placed on the inner wall of the box body. An automatically retractable fireproof and explosion-proof curtain is fixedly connected to the upper part of the box body near the door. A slide rail is fixedly connected to the inner side of the box body, and the moving end of the automatically retractable fireproof and explosion-proof curtain slides on the inner wall of the slide rail. Through the cooperation of a sealing auxiliary component and the fireproof and explosion-proof curtain, when the curtain falls, the extrusion rod presses the L-shaped contact piece, pushing the piston disc inside the air cylinder downwards via a connecting rod. This forces gas through a connecting pipe into the inflatable sealing strip inside the slide rail, causing the strip to expand and tightly seal the gap between the curtain and the slide rail. A sealing gasket on the left side of the slide rail further enhances the sealing performance. Simultaneously, the combined use of a triaxial accelerometer and a pressure sensor can accurately capture the tilt angle of the tank, improving monitoring efficiency.

The application discloses a sealable sealing strip assembly capable of directional heating in the field of rail car doors, which comprises a sealing strip and a door leaf, a mounting cavity is arranged in the sealing strip, a heating device and a heat insulation structure are arranged in the mounting cavity, the heating device is wrapped in the heat insulation structure, one side of the heating device is in contact with the sealing strip and faces the door leaf, a sealing rubber strip is mounted on the door leaf, the door leaf is forced to move, and the sealing rubber strip intermittently contacts a heat conduction surface of the sealing strip; in the application, the heat insulation structure and the heating device are arranged in the mounting cavity of the sealing strip, the heat insulation structure wraps around the heating device, only one side is left as a heat transfer port, the concentrated one-way conduction of heat energy is ensured, the position between the rubber strip of the car door and the sealing strip which may be iced is heated and kept warm during actual installation, the heat energy utilization rate is improved, the power burden of the vehicle is reduced, and the application is more energy-saving and environment-friendly.

The utility model relates to the technical field of conveying and carrying equipment, and discloses conveying and carrying equipment, a protective cover plate is mounted on the lower portion of a carrying support in a limited and suspended mode through a groove seat, and the upper portion of a meal box can be temporarily sealed and protected through shielding of the protective cover plate during carrying. When external pollutants are prevented from entering, the situation that soup food is scattered due to abnormal work of the multi-axis robot can be avoided, and when positioning deviation occurs, the protective cover plate which is pushed by the meal box and is not aligned and embedded upwards pushes the pressure sensor; through abnormal pressure induction, the situation that the multi-axis robot clamps and carries a meal box in a wrong positioning state can be avoided, and the situation that the meal box falls off due to clamping dislocation is avoided, and a piston air cylinder is installed on the upper portion of a carrying support through an air exhaust driving cylinder in a driving mode; after the protective cover plate is positioned and covered, the protective cover plate can be connected and limited through air exhaust, so that the sealing performance of the upper part of the meal box is improved, and meanwhile, a double-carrying limiting structure can be formed by matching with supporting and limiting of the carrying clamping jaw.

This utility model discloses an elevator car side panel structure that facilitates guide shoe maintenance, relating to the field of elevator car technology. It includes a car body, with two movably fitted closed mechanisms on the inner sides of the left and right walls. Mechanism plates are fixedly connected to the left and right sides of the car body. Guide shoe bodies are movably installed on the upper side of the two mechanism plates, which are far apart from each other. Rails are movably installed on the inner sides of both guide shoe bodies. A lifting mechanism is provided on the upper side of the car body. The closed mechanisms include side panels. This utility model's elevator car side panel structure, which facilitates guide shoe maintenance, allows the middle part of the car body's side interior panel to be detachable. The use of slots makes the side panel installation convenient and quick, improving the maintenance efficiency of the guide shoe body, reducing maintenance costs, simplifying operation, and increasing maintenance efficiency.

The utility model provides a blind window ladder belt, its manufacturing equipment and blind window using the same, the blind window ladder belt comprises a first longitudinal belt, a second longitudinal belt and a plurality of groups of horizontal separation lines located between the first longitudinal belt and the second longitudinal belt, the two ends of each group of horizontal separation lines are respectively fixedly connected with the first longitudinal belt and the second longitudinal belt, and the first longitudinal belt is fixedly connected with the second longitudinal belt. For two adjacent groups of transverse separation lines, the distance T1 between the connection points of the transverse separation lines and the first longitudinal belt is not equal to the distance T2 between the transverse separation lines and the connection points of the transverse separation lines and the second longitudinal belt. According to the utility model, the stress difference of the upper blade and the lower blade is compensated through the height difference between the intersection points of the two adjacent groups of transverse separation lines and the two longitudinal belts of the ladder belts, so that the closing degree of the lower part of the shutter is improved; other structural components of an existing shutter do not need to be changed, the shutter is matched with other existing structural components, and the improvement cost of the shutter is reduced; the manufacturing method is simple, and the manufacturing equipment can be obtained by improving the existing equipment, so that the cost is low.

The utility model discloses a saline-alkali soil complex microbial inoculant injection device which comprises a bottom plate, a complex microbial inoculant box body is installed at the top end of the bottom plate, a stirring assembly is connected to the bottom end of a first motor, cleaning rods are fixed to the two sides of the bottom end of a transmission rod of the stirring assembly, and cleaning brushes are connected to the bottom ends of the cleaning rods. A water source is fed from the position of the water inlet, then the water source reaches the interior of the complex microbial inoculant box body, the first motor can drive the stirring assembly to rotate, the stirring assembly is composed of the transmission rod and the stirring rods, and the stirring rods are located on the two sides of the transmission rod. The cleaning rods are mounted on the two sides of the bottom end of the transmission rod of the stirring assembly, so that the cleaning rods can rotate along with the stirring assembly, and the cleaning brush at the bottom can clean sediments in the complex microbial inoculant box main body, so that the problem of sediments after water enters is prevented, and the complex microbial inoculant box main body is relatively convenient to clean; and the mixing of the complex microbial inoculants is also facilitated.

This utility model discloses a portable essential oil massage device, belonging to the technical field of massage therapy devices, which solves the problems of inconvenient essential oil delivery and limited functionality in existing massage devices. The portable essential oil massage device includes a main body and a replaceable massage head. The bottom center of the main body has an insertion hole with two axial protrusions, and an essential oil chamber inside to hold an essential oil bottle. An oil guide tube passes through the top cap of the essential oil bottle and connects to a miniature solenoid valve. A miniature vibration motor with its axis perpendicular to the bottom surface is fixedly installed inside the main body via a shock-absorbing silicone pad. The top insert of the replaceable massage head has a groove matching the protrusions and an oil guide cavity connecting to the bottom micro-hole. The bottom surface of the main body and the top surface of the massage head are magnetically connected by an annular magnetic clasp. Through the synergistic action of the vibration motor and the magnetic insertion structure, the device achieves rapid massage head replacement, precise essential oil delivery, and multi-dimensional vibration massage functions. The unique effects of aromatic essential oils, combined with massage, accelerate blood circulation, promote skin absorption, and enhance the overall effect.

This invention discloses a puncture positioning device for oncology, relating to the field of medical device technology. It includes a puncture needle assembly, a self-sealing assembly, a drug injection mechanism, and a disposable locator. The puncture needle assembly comprises a puncture needle tube and a puncture needle core. The puncture needle tube has a hollow structure, and the puncture needle core slidably passes through the inner wall of the puncture needle tube. The front end of the puncture needle tube has a puncture tip for easy penetration of human tissue. The self-sealing assembly includes an elastic sealing ring fixedly connected to the surface of the puncture needle tube. This invention, by setting an elastic sealing ring and a sliding sleeve on the surface of the puncture needle tube, allows the sliding sleeve to slide along the axial direction of the puncture needle tube. When the puncture needle penetrates the target tissue, it pushes the sliding sleeve forward, and a movable push rod compresses the elastic sealing ring, causing it to expand radially. This allows the edge of the elastic sealing ring to make close contact with the tissue wall, achieving closure of the needle tract and effectively reducing the risk of pneumothorax and bleeding.

This utility model relates to a pair of scissors, and more particularly to a special scissor for fruit tree planting tools and equipment. It includes a left handle, a right handle, a right blade fixedly connected to the left handle, and a left blade fixedly connected to the right handle. Fixed posts are provided on both the front and rear sides of the upper part of the left handle, and a stop block is provided diagonally below the left side of each fixed post. An elastic element, U-shaped, is provided between the left and right handles, with its bottom contacting the back of the left blade. Fixed rings are provided on the upper parts of both sides of the elastic element, and these rings are fitted onto the fixed posts. The length from the fixed rings to the end of the elastic element is greater than the length from the fixed post to the stop block. The advantages of this utility model are: after cutting, the elastic element returns to its original position due to elasticity, reducing the force required for the user to return and lessening hand fatigue when using the scissors; and when not in use, the bottom of the elastic element can be rotated downwards, allowing the scissors to be easily closed, ensuring safety.

The utility model discloses a kind of coiled steel surface cleaning equipment for producing elevator guide rail support, it is related to elevator guide rail support production technical field, including processing table, the dustproof part is arranged on the top of processing table;The dustproof part is internally provided with cleaning part and extends out the top of dustproof part, the cleaning part includes main cleaning unit and auxiliary cleaning unit;The dust removal part is arranged in the bottom of processing table, and the dustproof part includes dustproof box.The utility model can clean coiled steel in relatively closed space by setting dustproof box, can effectively prevent the dust after cleaning from scattering everywhere to harm the environment and staff of processing, also facilitate to cooperate dust removal part to discharge dust in batches, by setting dust removal part, when cleaning coiled roller, start dust removal machine box to cooperate dust extraction pipe to absorb the dust generated by cleaning, and dust extraction pipe is divided into two groups to improve the effect of dust removal, and filter disc is simultaneously set to filter dust to prevent pipeline from being blocked.

The electromagnetic valve comprises a coil body and a valve seat, the coil body is provided with a through cavity with a downward opening, the valve seat is provided with an inner cavity with an upward opening, the inner cavity is communicated with an inlet and an outlet in the two ends of the valve seat, the lower portion of the coil body is in butt joint with a middle connecting piece, the lower portion of the middle connecting piece is inserted into the inner cavity of the valve seat, and the coil body, the middle connecting piece and the valve seat are fixed through screws. A spring and an iron core are sequentially placed in the through cavity downwards, the spring is sleeved on the upper portion of the iron core, a sealing ring is installed in an inner cavity of the valve seat, the sealing ring is sleeved outside a valve core, a pilot hole extending up and down is arranged in the center of the valve core, a plug is fixedly connected to the lower end of the iron core, and the plug is clamped at the upper end of the valve core and used for opening or blocking the pilot hole. When the electromagnetic valve is opened, the electromagnetic valve has the advantages of high speed and short response time of a direct-acting electromagnetic valve; on the basis of a pilot-operated type electromagnetic valve structure, large flux of flowing water can be realized; the closing effect is as excellent as that of a pilot mode, and in the closing state, the pressure difference under the control of the pilot hole is actually utilized, so that the pressure bearing capacity is high.

The utility model provides a threshing concave sealing plate convenient to disassemble and assemble and a harvester. A threshing concave sealing plate convenient to disassemble and assemble comprises a first sealing plate welding part, a second sealing plate welding part and a third sealing plate welding part, and one side of the first sealing plate welding part and one side of the third sealing plate welding part are each provided with a first connecting mechanism used for being detachably connected with a reinforcing plate. Second connecting mechanisms used for being connected with the first sealing plate welding part and the third sealing plate welding part are installed on the two sides of the second sealing plate welding part correspondingly. The two sides of the second sealing plate welding part are detachably connected with the other side of the first sealing plate welding part and the other side of the third sealing plate welding part through the second connecting mechanisms respectively.

The application relates to the technical field of InSAR and discloses a wide-area deformation adaptive InSAR network adjustment method, which comprises the following steps: extracting an effective pixel coordinate set; based on the effective pixel coordinate set, a multi-target optimization function is constructed, the optimal model structure and the regularization parameter of each overlapping area are determined; a mapping model is constructed, the observation weight of each pixel is dynamically adjusted to suppress the influence of abnormal values, and the mapping model parameters of each image are obtained; the parameter feasible region of the curved surface fitting model is adaptively determined according to the geometric shape of the overlapping area, and the spatial curved surface parameters are obtained; the optimal absolute correction parameters of the global image are solved, and the consistent splicing result with the minimum global error and taking the central image as the reference is obtained. Through the introduction of the adaptive window mechanism driven by the time series coherence stability index and the terrain roughness, the adaptability of the robust identification of seasonal incoherent pixels and the extraction of effective observation points under complex terrain is enhanced.

The utility model discloses a fireproof door with a smoke-proof structure, which comprises a door frame, a fireproof door main body is hinged to the left side in the door frame through hinges, and an automatic door closer is arranged between the top of the fireproof door main body and the top of the door frame. According to the fireproof door, the first L-shaped high-temperature-resistant sealing strip and the second L-shaped high-temperature-resistant sealing strip are mutually embedded, pressure is applied to the back face of the second L-shaped sealing strip through the jacking mechanism, the sealing effect is improved, when a fire occurs, the temperature around the fireproof door rises, the thermal fuse is fused when heated, and the bottom high-temperature-resistant sealing gasket makes contact with the ground, so that the fireproof door is prevented from being damaged. And the gap between the bottom of the fireproof door main body and the ground is sealed, so that the surrounding gaps of the fireproof door plate are effectively sealed, fire smoke and dust are prevented from flowing out of the gaps, the heat resistance and the smoke prevention effect of the fireproof door are improved, and damage can be effectively reduced when the fireproof door encounters a fire.

The utility model discloses a kind of waste recovery devices for wet tissue production, relate to waste recovery device technical field.The utility model includes: placing cylinder, placing cylinder includes U-shaped fixed frame, U-shaped fixed frame is slidably fitted with U-shaped sliding frame, the opening side of U-shaped fixed frame is rotatably connected with fixed cover plate, the side of fixed cover plate is slidably fitted with sliding cover plate.The utility model can directly put waste by the one-way baffle of recovery box upper side, and realize quick storage by cooperation placing cylinder;When needing to expand storage space, pull U-shaped sliding frame along U-shaped fixed frame sliding, U-shaped sliding frame is driven sliding cylinder synchronous rising by connecting piece, while the shielding cylinder of sliding cylinder inside slides along fixed cylinder, telescopic rod between fixed cylinder and sliding cylinder synchronous extension, realize that recovery box overall structure is extended, flexibly adjust storage capacity, adapt to different production waste recovery needs in wet tissue production.

The nursing flushing device comprises a flushing bottle and a flushing head, an opening is formed in the top of the flushing bottle, a mounting ring is fixedly arranged at the opening in the top of the flushing bottle, a flushing part is arranged at one end of the flushing head, a baffle ring is arranged at the end, away from the flushing part, of the flushing head, and a sealing piece is fixedly arranged on the peripheral wall of the baffle ring. The sealing part is used for sealing a gap between the baffle ring and the mounting ring, a limiting part is arranged on the baffle ring and used for limiting the position of the baffle ring on the mounting ring, waste of flushing fluid can be reduced, and meanwhile the flushing and cleaning effect can be improved.

The invention belongs to the technical field of oil and gas field exploration and development, and provides a cover layer sealing performance evaluation method and device, electronic equipment and a storage medium, the method comprises the following steps: testing a sample of a target area cover layer to obtain an association relationship between the confining pressure and permeability of the cover layer; and according to the confining pressure of the cover layer and the association relationship, calculating the permeability of the cover layer so as to evaluate the closure of the cover layer of the target area based on the permeability. The universality of the method for evaluating the sealing performance of the cover layer is improved.