10results about How to "Reduce filter time" patented technology

This invention proposes an industrial preparation method for a highly stable, low-impurity ferrous sulfate solution. Targeting 98% high-purity raw materials, it pioneers a fixed mass-to-volume ratio, combined with constant-temperature dissolution at 50-60℃ and sealed protection. Through a four-dimensional linkage of "raw material purity - ratio - temperature - anti-oxidation," the final Fe solution achieves optimal stability. 2+ The concentration is stabilized at 5.2%–6.5%, with a concentration deviation of ≤±0.1%. Simultaneously, a triple logic of "raw material impurity content detection + theoretical calculation + pH closed-loop control" is employed, adapting to the strong neutralizing characteristics of 32% high-concentration liquid alkali, precisely controlling the pH at 4.0–5.0, achieving an impurity removal rate ≥93%, and ensuring that the finished product contains Al <10ppm, Ti <8ppm, and Fe <10ppm. 2+ Retention rate ≥98.5%; filtration efficiency is increased by more than 5 times through a dual-stage high-pressure filtration system (0.7MPa).

This invention discloses a method for low-temperature pressing purification and dewaxing of Torreya grandis kernels, comprising at least the following steps: S5.1 Pre-preparation of a composite filter layer: After pre-cooling the filter chamber of a vacuum filtration device, a filter screen and a filter membrane are laid in sequence, and nitrogen is introduced to remove impurities; S5.2 Gradient negative pressure filtration: The initially dewaxed oil is injected into the filter chamber at low temperature, first pre-filtered at -0.05MPa to -0.06MPa for 10 minutes, then deep filtered at -0.08MPa to -0.09MPa for 20 to 30 minutes to retain trace wax crystals; S5.3 Nitrogen purging to remove water: The dewaxed oil is introduced into a low-temperature oil storage tank, and nitrogen is continued to be introduced to remove water and prevent oxidation; S5.4 Finished product fine filtration: The dewaxed oil is slowly heated and then finely filtered through a filter screen to obtain Torreya grandis finished oil. Gradient negative pressure filtration retains trace wax crystals in Torreya grandis oil. This invention employs a gradient negative pressure dewaxing step, which ensures sufficient driving force to accelerate the filtration speed and utilizes the formed filter cake layer as a secondary filtration medium to efficiently retain trace amounts of residual wax crystals. This approach ensures a high dewaxing rate while shortening the filtration time and improving production efficiency.

The utility model belongs to the technical field of rolling oil filtering, and relates to a rolling oil filtering device which comprises a through hole shaft rotatably mounted on a filter cartridge, an oil inlet pipe communicated with one end of the through hole shaft through a rotary joint, the through hole shaft connected with a first motor through a bevel gear transmission part, and a first filtering system connected with the other end of the through hole shaft. A first filtering system and a second filtering system are sequentially installed in an inner cavity of the filtering cylinder from top to bottom, an oil return pipeline is arranged on the filtering cylinder, the oil inlet end of the oil return pipeline is communicated with the filtering cylinder, and the oil outlet end of the oil return pipeline is located between the first filtering system and the second filtering system. According to the utility model, primary filtration is carried out through the first filtration system, impurities with larger particle sizes are intercepted and then enter the second filtration system to be deeply purified, so that finer impurities are further removed, and the rolling oil is circularly filtered through the oil return pipeline, so that the filtration frequency of the rolling oil is increased, the rolling oil participates in the filtration process again, and the filtration sufficiency is improved; and the filtering quality is further ensured.

The application relates to the technical field of medicine preparation, in particular to a preparation device and method of high-purity landiolol hydrochloride, which comprises a water bath heating tank, a filtering structure communicated with the lower part of the water bath heating tank through a valve assembly, a cooling liquid storage tank communicated with the lower part of the filtering structure, a semiconductor refrigeration device installed on the outside of the cooling liquid storage tank, a first heat exchange unit installed on the outside of the water bath heating tank, and a second heat exchange unit communicated with the first heat exchange unit and installed on the outside of the semiconductor refrigeration device; from adding a crude solution, heating, filtering, cooling crystallization to equipment resetting, a coherent production process is formed; when a batch of purification is finished, the water bath heating tank is communicated with the cooling liquid storage tank, and the filtering assembly is reset, so that the next batch of production can be immediately started without long-time waiting for equipment adjustment, the production cycle is greatly shortened, the demand for continuity in large-scale industrial production is met, and the yield is significantly improved compared with a traditional intermittent production mode.

The utility model discloses a water resource protection wastewater treatment device, including filter box, the top of filter box is connected with the box cover through the bolt fixed, the bottom fixed connection of filter box has the support leg, the inside of filter box is provided with filter mechanism, and filter mechanism includes: frame, set up in the inside of filter box, filter screen. The utility model relates to water resource protection technical field, and this water resource protection wastewater treatment device passes through the cooperation between cam, motor, shell, gyro wheel, stand, spring, concave board, curved column, frame and filter screen, has realized the time of shortening wastewater filtration, has solved the existing treatment device when processing, because the position of filter screen is unchangeable, cannot make filter screen move up and down, leads to the impurity in wastewater to be jammed in the hole in the inside of filter screen, causes wastewater filtration time to be long, thereby has reduced the problem of existing treatment device work effect.

The utility model relates to the technical field of water storage pool, and disclose a novel water circulation water storage pool, including water pool and filter box, and the lower end four corners of water pool all are installed with stand, and stand is provided with four, and the lower part of water pool front end wall is connected with drainage pipe, the front part of water pool left side wall is connected with first connecting pipe, and first connecting pipe left end communicates with filter box, and the rear part of water pool right side wall is installed with second connecting pipe, and second connecting pipe right end communicates with water pool, and both sides of filter box upper end are all provided with recess, and recess inside all are provided with spring, and spring rear end all are installed with slide plate, in the utility model, start water pump, and clear water enters into filter box through first connecting pipe, and clear water can drive filter plate to vibrate, and two springs carry out elastic movement to intensify filter plate vibration, avoid impurity accumulation on filter plate to improve the efficiency of filtration, and the filtered clear water enters into water pool through second connecting pipe to realize cyclic use and reduce the filtration time of later period.

The present application relates to sewage treatment technical field, especially sewage multi-stage processing device for nitration cotton production, including processing bucket and motor fixedly connected to the top end of processing bucket, the output end of motor is connected with rotating shaft, the bottom end of rotating shaft is rotatably arranged in processing bucket, the upper end of processing bucket is connected with liquid inlet pipe, the bottom end of processing bucket is connected with liquid outlet and residue outlet.The present application provides a kind of sewage multi-stage processing device for nitration cotton production, when rotating shaft counterclockwise rotates, will make cleaning scraper bar in outer filter sleeve or inner filter sleeve inner cavity disturbance, can prevent the impurities in liquid deposition, shorten the filtration time, when rotating shaft clockwise rotates, cleaning scraper bar can scrape the impurities on the inner wall of outer filter sleeve or inner filter sleeve, and when each limit knob is pressed in turn to extrusion slope, the air pressure of cavity surrounded by sliding plate and filter screen can be changed instantly, and the impurities adhered in mesh hole are discharged.

The utility model relates to the technical field of metal recovery treatment, and discloses a screening device for metal scrap recovery, which comprises a support component, shaking support rod components are fixedly mounted on two sides of the top of the support component, and a filter box component is fixedly mounted on the top of each shaking support rod component. Shaking brake assemblies are installed on the two sides of the filter box assembly in an associated mode, a cleaning assembly is installed in the filter box assembly in a limiting mode, and the middle of each shaking brake assembly is fixedly installed in the middle of the support assembly. The shaking brake assembly is mounted on the device, so that when the device is used, the filter box assembly can be shaken through the arranged shaking brake assembly, the filtering work efficiency can be improved, and certain filtering time is saved.

The utility model provides coprophilous fungus extraction equipment, which relates to the technical field of coprophilous fungus extraction and comprises a rough filtration stirring device, a fine filtration tank, a collection tank and a filling device which are communicated in sequence, the filling device is provided with a collecting bottle bearing cavity and a protective gas cavity which is communicated with the collecting bottle bearing cavity and located above the collecting bottle bearing cavity, the collecting bottle bearing cavity is provided with a first gas spraying hole set for spraying gas towards the protective gas cavity, and the side wall of the protective gas cavity is provided with a second gas spraying hole set. The coprophilous fungi extraction equipment provided by the utility model has the advantages that the equipment volume can be reduced, the consumable cost is reduced, the recovery efficiency is improved, potential safety hazards such as pipeline disintegration are avoided, a good protective gas environment can be created for the collection bottle, and the viable bacteria rate and the bacteria collection rate of bacteria liquid in the collection bottle are improved.