67results about How to "Long-term effective use" patented technology

The invention discloses a dustproof device of a swinging rod of a plastic circular weaving machine, and belongs to the field of plastic weaving machines. The dustproof device of the swinging rod of the plastic circular weaving machine resolves the problem that dust accumulates and affects the normal work of the swinging rod. According to the technical scheme, the dustproof device of the swinging rod of the plastic circular weaving machine mainly comprises a support, the swinging rod and a core shaft, wherein the two sides, located at the swinging rod, of the support are respectively provided with a supporting part, an installation hole is formed in the middle of the swinging rod, the core shaft is arranged in the installation hole, the two ends of the core shaft extend out of the installation hole to be connected with the supporting parts of the support, a bearing assembled with the core shaft is arranged in the installation hole, dustproof covers are arranged at the two ends of the installation hole and are arranged on the core shaft in a sleeved mode, the inner sides of the dustproof covers abut against the bearing, the supporting parts of the support abut against the outer sides of the dustproof covers, a circle of skirt edge is arranged at the edge of the inner side of each dustproof cover, annular grooves are formed in the two sides of the swinging rod, and the skirt edges extend into the annular grooves and are matched with the annular grooves. The dustproof device of the swinging rod of the plastic circular weaving machine is mainly applied to the plastic circular weaving machine.

The invention discloses a substation prefabricated cable channel fireproof wall, and relates to the field of power transmission and distribution cable line channel fireproof fixing devices. The substation prefabricated cable channel firewall comprises a frame, steel bars and a fireproof insulating material, wherein the length of the frame is 800-1200mm, the width is 800-1200mm, the thickness is 350-400mm, the fireproof insulating material is fixedly connected to the internal part of the frame, the fireproof insulating material is provided with 16 cable threading holes, and the horizontal direction and the vertical direction of the frame are respectively provided with three steel bars. The substation prefabricated cable channel fireproof wall is mainly applied to power transmission and distribution cable line channels and substation cable layers, is mainly convenient for cable fixation, reduces the number of removing times of the cable fireproof wall, prevents expansion of a fire disaster caused by cable winding when a cable breaks down and is on fire, and ensures normal operation of a cable line.

The invention relates to a long-term governance method for converting saline-alkali soil into fertile farmland, comprising the following steps: (1) digging a deep hole on the saline-alkali soil; (2) filling filler on the bottom of the dug deep hole to form a saline-alkali discharging filler layer; (3) digging a saline-alkali discharging ditch communicated with the underground saline-alkali discharging filler layer, and putting earth slope banks around the saline-alkali discharging ditch; and (4) discharging saline alkali by naturally raining or irrigating the whole saline-alkali soil. The filler layer is arranged, the principle of 'salt comes and leaves with water' is utilized, and the method that salt moves downwards and the filler layer cuts off an evaporation channel by irradiation or raining to cause the salt to move upwards is adopted, so that the content of the salt in a ploughing layer is lowered, and the salt can be prevented from moving upwards and gathering so as to obtain the effective long-term governance effect. The filler layer in the manufacture method is characterized by distributing materials in the mode of multiple dimension and multidimensional grading, the filler layer has the characteristics of good permeability which is characterized by thick top and loose bottom, and rolling resistance and can be effectively used for a long term.

The invention relates to a method for improving severe saline-alkali soil by using an open trench and hidden filler layer, which comprises the following steps of: (1) digging a pit in the saline-alkali soil, and filling filler at the bottom of the dug pit to form a salt and alkali removing filler layer; (2) digging a salt and alkali removing trench which is positioned above and communicated with an underground salt and alkali removing filler layer, and performing stone pitching on the salt and alkali removing trench; and (3) removing salt and alkali from the whole saline-alkali soil by natural rainfall or irrigation. By performing stone pitching on the salt and alkali removing trench and arranging the salt and alkali removing filler layer, the salt and alkali removing trench has a good anti-seepage effect and the characteristic of preventing cultivated soil from being lost by slope protection, and can be effectively used for a long time, and the salt and alkali removing filler layer breaks the formation of capillaries in the soil effectively and prevents shallow groundwater from being evaporated; and by a method for controlling the upward movement of salt formed by evaporation by cutting an evaporation channel through the filler layer, the salt is difficult to move upwards and aggregate, the problem that surface water is evaporated to form the salt is radically solved, and theaim of effectively improving soil property for a long time is fulfilled.

The present invention relates to high nutrient vegetable food, and is especially one kind of natural celery powder with the color and nutritious value of fresh celery maintained and its making process. The natural celery powder is made with celery as main material and through one wet process including the steps of washing, cutting, color-protecting pre-boiling, pulping, grinding, secondary treatment, blending, homogenizing, sterilizing, concentration, drying, sieving, packing, etc. The natural celery powder has the look, fragrance and taste of fresh celery maintained, and is instant and rich in nutritious components.

The invention provides a method for preparing mechanically sensitive glass by isothermal two-step ion exchange. The ion exchange medium is used as a toughened molten salt for the preparation of mechanically sensitive glass for ion exchange. It is mainly composed of potassium nitrate or potassium nitrate and sodium nitrate, and potassium hydroxide, potassium carbonate, potassium tetrafluoroborate, and diatomaceous earth are added. , clay, cerium oxide. The method for preparing mechanically sensitive glass by two-step ion exchange is: put the glass sheet in the first step of tempered molten salt for ion exchange, the time of ion exchange is 24-28h, and the temperature is T1; then place it in the second step of tempered molten salt Carry out ion exchange, the time of ion exchange is 15-60min, the temperature is T2, T1=T2. The two-step ion-exchange mechanically sensitive glass prepared by the invention has good performances. While obtaining the required strength, it has good fracture concentration, and the glass has the characteristic of multiple cracks as a fracture warning.

The invention relates to the technical field of numerical control machining of leather and other materials, in particular to a method for surging and punching leather and other materials by adopting a numerical control surging and punching machine, aiming to protect a bedplate from hole defects after multiple machining and improve the machining efficiency. The method comprises the following stepsof: (1) placing at least three layers of cardboards on the machining bedplate of the numerical control surging and punching machine; (2) drawing a profile line on the top cardboard by the numerical control surging and punching machine; (3) fixing a machining material according to the line profile drawn on the top cardboard; (4) surging and punching by the numerical control surging and punching machine; and (5) replacing and moving the cardboard in the middle layer after the surging and punching operation is completed, and executing the step 3 and the step 4 once more, and machining the next batch of the machining material. Therefore, a whole process method for complete numerical control surging and punching machining is formed, the bedplate can be effectively used for a long term, and themachining efficiency is improved.