11results about How to "Avoid secondary blockage" patented technology

The utility model provides a municipal engineering pipeline drainage dredging device, which relates to the technical field of pipeline dredging and comprises a dredging device body, a collecting mechanism is arranged on the outer side of the dredging device body, a dredging mechanism is arranged at the bottom end of the dredging device body, and the collecting mechanism comprises an electric supporting rod. An annular sleeve piece is arranged at the bottom end of the electric supporting rod; blockage garbage such as leaves and plastic bags blocked in the pipeline is cut and dredged through the rotary tool bit on the dredging mechanism, the cut and dredged blockages are collected through the collecting mechanism and taken out of the pipeline to prevent secondary blockage of the pipeline, and the dredging mechanism is provided with a quick release structure, so that the dredging efficiency is improved. According to the pipeline dredging device, the rotating tool bit can be quickly disassembled and assembled, high-pressure water flow is sprayed out through the high-pressure water sprayer to clean the pipeline, dirt in the pipeline is prevented from being accumulated to block the pipeline, and the high-pressure water flow sprayed out of the high-pressure water sprayer can play an auxiliary propelling role on the dredging device.

This application discloses an anti-winding drum-type mobile screening station, belonging to the technical field of screening stations. It features a traveling chassis with a screening body mounted on its top. The screening body includes a feeding unit, a middle frame, and a screening unit, arranged sequentially. An inclined cutting component is located on one side of the top of the feeding unit for inclined cutting of the material. The beneficial effects of this application are: the inclined cutting component at the top of the feeding unit, controlled by pushing the component to move the cutting blade at an angle, can forcibly cut long fibers and other impurities in the material, preventing bridging and entanglement when impurities enter the screen cylinder from the feeding unit's outlet. Furthermore, the pushing component solves the problem of inlet blockage at the source. Combined with the shaftless screen cylinder design, the risk of entanglement and blockage in the screening station can be completely eliminated, ensuring continuous and efficient operation of the equipment.

The invention relates to the field of melt-blown cloth production, in particular to a spinneret plate cleaning structure for melt-blown cloth production, which comprises an air blowing mechanism and a sealing cover, a discharge valve is arranged on one side of the sealing cover, a U-shaped frame is connected between the air blowing mechanism and the sealing cover, an air cylinder is fixedly mounted on the U-shaped frame, and a conveying pipe is fixedly mounted on one side of the inner wall of the sealing cover. The device has the beneficial effects that through cooperation of an inclined plane groove and an inclined plane block in the pressurizing assembly, transverse movement of the horizontal push rod is converted into vertical pressurizing movement of the lower pressing rod, forward pressure is applied to a softening agent, and the softening agent can be continuously softened; when the downward pressing rod moves downwards, the sliding pin on the rod body of the downward pressing rod slides in the wave-shaped annular groove to drive the rotating shaft to rotate, the rotating shaft drives the brush head to rotate, pollutants such as carbides and dust attached to the surface are gently scraped off under the lubrication of the softening agent, and secondary blocking is prevented.

This utility model discloses an air-film anti-arching and anti-clogging structure, relating to the field of hopper anti-clogging technology. It includes an air supply pipe and an air blowing assembly. The air blowing assembly can be installed on the hopper wall and is connected to the air supply pipe. The air supply pipe includes branch pipes and a main pipe, the main pipe being connected to an air source for air supply. Multiple branch pipes are connected to the main pipe, and each branch pipe is connected to the air blowing assembly. The air blowing assemblies on the branch pipes generate a downward rotating airflow to purge the material in the hopper. This utility model also provides a hopper including the air-film anti-arching and anti-clogging structure described above. This utility model can improve the anti-clogging effect and prevent hopper blockage.

The invention discloses a crawler-type internal-attack rescue vehicle, relates to the technical field of fire-fighting internal-attack equipment, and improves the phenomena that traditional internal-attack rescue mostly depends on rescue workers to carry equipment such as forcible entry tools, lighting equipment and gas cylinders for hiking operation, the labor intensity is high, and the function of single equipment is split. Cleaning assemblies are arranged on the two sides of a vehicle head of the vehicle body, a collecting device is arranged at the position, close to the vehicle head, of the upper surface of the vehicle body, the collecting device is located between the two cleaning assemblies, a rotating assembly is arranged in the frame body, a high-pressure water cannon is arranged on the rotating assembly, and a buffering assembly is arranged on the outer side of the high-pressure water cannon. According to the rescue robot, the burden of carrying equipment by rescue workers can be reduced, and the risk of single-person operation is reduced.

This invention discloses a closed drainage device for thoracic surgery with anti-clogging filtration, belonging to the field of biomedical engineering technology. It includes a base, with a protective shell fixed to its upper surface. The protective shell houses a drainage assembly, a water seal assembly, and a negative pressure regulating assembly. An installation box is fixedly connected to the back of the protective shell, and a transmission assembly is located inside the installation box. The drainage assembly includes a drainage bottle. This invention features multiple anti-clogging mechanisms. A rotating shaft drives an L-shaped extension frame and a scraper to rotate, which can scrape away blockages on the surface of the conical mesh cover in real time, preventing clogging of the filtration structure. An anti-clogging insert extends deep into the funnel-shaped drainage shell, preventing fluid accumulation and debris blockage at the drainage shell. Simultaneously, during the rotation of the rotating shaft, the cooperation of a second protrusion with the first protrusion causes a slight swaying of the limiting bottom ring and the anti-clogging insert, further enhancing the anti-clogging effect and ensuring continuous and unobstructed drainage operations in thoracic surgery.

This invention belongs to the field of material conveying technology, specifically relating to a bulk material conveying device and its usage method. By collecting multi-point pressure response values ​​from key sections of the conveying pipeline, a spatial multi-point pressure difference correlation model is constructed. Based on the positive deviation of the first pressure difference, the negative deviation of the second pressure difference, the inverse correlation of dual change rates, and a constant feeding rate, the system accurately identifies the precursory state of blockage. After identification, a tiered unblocking process is implemented: the first stage maintains a constant main air source pressure and adaptively adjusts the pulse pressure, frequency, and feeding rate; if the first stage is ineffective or the pressure difference continues to worsen, the second stage is initiated, increasing the main air source pressure and pulse frequency. After unblocking, an asymmetric step sequence is used to gradually restore operating parameters, continuously monitoring the pressure difference change rate during the restoration process to avoid secondary blockage. This invention achieves accurate identification of precursory blockages, dynamic adaptation of tiered unblocking, and a stable and controllable restoration process, significantly improving the operational reliability of the pneumatic conveying system.

The invention relates to the technical field of pipeline cleaning, in particular to a pipeline dredging device which comprises a first crushing part, a cleaning and scraping part, a fixed connecting frame, a fixed connecting threaded pipe, a second crushing part and a limiting adjusting part. The first crushing part and the second crushing part are distributed at the two ends of the limiting adjusting part correspondingly, the first crushing part and the second crushing part are the same in structure, the fixed connecting frames are evenly and fixedly installed on the outer portion of the end, close to the second crushing part, of the limiting adjusting part, and the fixed connecting threaded pipes are evenly distributed. The first crushing part and the second crushing part are located at the two ends and are responsible for crushing large deposits and impurities in the middle, the cleaning and scraping part is located in the middle and is specially responsible for pipe wall cleaning, and through the arrangement of front-back cooperation and clear division of labor, the device can complete comprehensive cleaning from the inner wall to the middle at a time in the front-back moving process; and low efficiency caused by repeated operation of single-function equipment is avoided.

The invention discloses a polymer biological blocking remover and application thereof, and belongs to chemicals for oil fields. The polymer biological blocking remover is prepared from the following components in parts by weight: 0.1-5 parts of an organic acid coupling agent, 1-20 parts of a biocatalyst, 0.5-5 parts of an inducer, 0.01-5 parts of a bioactive aid and 65-98.39 parts of water. The gel breaker can rapidly degrade HPAM and related gel in a low-temperature environment of 50 DEG C or below, is high in gel breaking speed and small in dosage, and is suitable for oilfield sewage treatment and oily sludge treatment; the blocking remover does not contain dangerous components such as a strong oxidant and chlorobenzene, so that potential safety hazards such as fire, explosion, corrosion and highly toxic gas possibly caused by an oxidized blocking remover are avoided, and the blocking remover is safer and more environment-friendly; polymers are directly degraded through chemical action, and water-insoluble by-products are not generated like an oxidized blocking remover, so that secondary blocking of a stratum is effectively prevented; the product is good in stability, easy to store and transport, simple in field operation, simple in construction and suitable for large-scale application; the device is wider in applicable temperature range, lower in cost, higher in economic benefit and more beneficial to popularization and application.

The application discloses a latex protein eliminating device and method, and relates to the technical field of latex product processing equipment. The device comprises a rack, a cover fixed on the rack, a centrifugal module for eliminating most protein degradation fragments in latex enzyme solution, and a conical rotating drum fixed at one end of the centrifugal module. The device further comprises a plurality of slag discharge sleeves uniformly distributed on the outer side of the conical rotating drum. A spiral unloader in the centrifugal module discharges the protein degradation fragments generated after separation from the slag discharge sleeves. Each slag discharge sleeve is provided with a blockage removal and discharging assembly. The centrifugal module and the blockage removal and discharging assembly cooperate with each other. When the centrifugal module works, the conical rotating drum rotates at a high speed. The spiral unloader pushes the separated protein degradation fragments to the slag discharge sleeves. The blockage removal and discharging assembly performs real-time rotary cutting and pushing on the blockages possibly formed in the slag discharge sleeves, ensures the smoothness of the slag discharge channel, and improves the separation efficiency of the centrifugal module.