11results about How to "Change space" patented technology

The invention discloses high-temperature and high-pressure filtrate reducer sulfonated asphalt for drilling fluid and a preparation method of the high-temperature and high-pressure filtrate reducer sulfonated asphalt, and belongs to the technical field of filtrate reducers. A comb-shaped side chain is introduced into a benzene ring of SEBS, the benzene ring is endowed with a comb-shaped structure, the structure strongly interacts with sulfonated asphalt, asphalt dispersion is optimized, agglomeration is avoided, 5-(2-hydroxyethyl) uracil is introduced, the oleophylic and hydrophilic characteristics are balanced, the acting force between asphalt particles is reduced, the reaction efficiency and uniformity of asphalt and fuming sulfuric acid are improved, and the sulfonated asphalt is prepared. The dispersant promotes uniform dispersion of asphalt, accelerates sulfonation reaction and improves sulfonated asphalt quality. The surface activity of the modified SEBS and the sulfonated asphalt form a net structure, so that the water solubility of the asphalt is enhanced, the drilling fluid is convenient to blend, the liquid surface tension is reduced, and the bubble formation condition is destroyed. A quaternary ammonium salt group is introduced, a well wall is stabilized by utilizing an opposite attraction principle, clay hydrophobicity is promoted, hydration and expansion are inhibited, and collapse is prevented. The modified sulfonated asphalt is resistant to temperature and pressure, good in filtration resistance and stable in filtration control at high temperature and high pressure.

The utility model discloses a cotton flow control device of a cotton yarn carding machine, which comprises a rack, a cotton conveying pipeline and a mounting plate, and a threaded rod is rotatably connected onto the rack. The control frame is driven by the threaded rod to move up and down in the cotton conveying pipeline, so that the space, capable of conveying cotton, in the cotton conveying pipeline is changed, the number of passing cotton flows is reduced through friction between the control frame and the inner wall of the cotton conveying pipeline, but the airflow conveying speed is not changed, and the carding machine at the rearmost end can obtain sufficient cotton. After the control frame ascends, the pressure plate descends relatively, the abutting block is extruded out of the control frame, the abutting plate on the abutting block pops up under the action of the first spring and abuts against the inner wall of the cotton conveying pipeline, and the higher the control frame moves upwards, the higher the pressure between the abutting plate and the inner wall of the cotton conveying pipeline is, the higher the pressure between the abutting plate and the inner wall of the cotton conveying pipeline is. Therefore, the purpose of protecting the control frame and the inner wall of the cotton carding pipeline attached to the control frame is achieved. The inclined plates, the telescopic rods and the sliding grooves are arranged, so that the inclined plates abut against the inner wall of the cotton conveying pipeline all the time to form inclined planes, and conveying of the cotton flow is facilitated.

The invention discloses a planar chiral [2.2] paracyclophane alkane monophosphine ligand pEPCP as well as a preparation method and application thereof, and relates to the technical field of chemical catalysis, the planar chiral [2.2] paracyclophane alkane monophosphine ligand pEPCP is characterized by comprising a racemate or an enantiomer, and the structural formula I of the monophosphine ligand pEPCP is as follows: # imgabs0 #. Different types of ether substituents are introduced into the structure of a unique large-steric-hindrance electron-rich rigid skeleton formed by connecting two benzene rings at para-positions through two ethylidene groups, so that the electron cloud density and steric hindrance of aromatic rings directly connected with phosphine ligands are changed. In addition, the ether substituent can also be used as a weak coordination group and participates in adjusting a dihedral angle of ligand chelation. The metal, the ligand and the substrate form the most appropriate coordination environment in the catalysis process, so that the corresponding catalytic reaction has the advantages of high reaction activity, good enantioselectivity, wide substrate universal application range and the like, is particularly suitable for asymmetric coupling reaction catalyzed by transition metal, and has economic practicability and industrial application prospects.

The utility model provides a sintering high-temperature furnace for electronic ceramics, which relates to the technical field of electronic ceramics and comprises a lifting mechanism, and a cooling mechanism is fixedly mounted on one side of the outer wall of the lifting mechanism. According to the device, two positive and negative motors are started through a controller, the other ends of two threaded rods rotate in two second transverse plates, and four L-shaped sliding blocks fixedly mounted at the bottom of a placement plate are movably embedded in four limiting grooves, so that the placement plate stably moves on the two threaded rods; the size of the space between the placing plate and the sintering furnace body is adjusted so that ceramic materials of different sizes can be subjected to high-temperature sintering treatment in the sintering furnace body, the practicability of the sintering high-temperature furnace is improved, and then the using effect of the sintering high-temperature furnace for electronic ceramics is improved.

This invention discloses a fully automatic PTC heater surface spraying device, including a worktable. A moving module is installed on the top of the worktable, and the output end of the moving module is connected to a material picking module. The material picking module is used to pick up, transfer, and adjust the position of the material to be sprayed. Two sets of baffles are installed on the top of the worktable, forming a spraying space between the two sets of baffles. The material picking module can move the material to be sprayed into this spraying space. This invention belongs to the technical field of heater production equipment. The technical effect achieved is as follows: by setting a work chamber composed of two fixed covers and two relatively movable frames, and cooperating with the bidirectional moving module, after the material picking module moves the material to be sprayed to the spraying station, it can automatically close to form a closed spraying environment. This closed structure, in conjunction with the holes opened on the baffles, ensures that the paint sprayed from the spray gun head can only be accurately coated on a specific area of ​​the material through the holes, effectively preventing the paint from atomizing and escaping outward.

A mobile modular housing system includes a base plate system, a roof frame system, a wall frame system, a roof system, and assembly kits. The wall frame system is vertically installed on the outer side of the base plate system, the roof frame system is installed at the upper end of the wall frame system, the roof system is installed between the roof frame systems, and the assembly kits cover the wall frame system and the roof frame system. The housing designed by this invention can be easily moved, its internal space can be freely combined and can be quickly installed, and its comfort and applicability are significantly better than existing temporary buildings.

The utility model relates to frozen equipment technical field, concretely relates to a turnover vacuum precooling device, including the freezing storehouse, the left side rotation of freezing storehouse is connected with the door plant, the front end fixed connection of freezing storehouse has the control panel, the upper end of freezing storehouse is equipped with the freezing assembly, the inside of freezing storehouse is equipped with the space change mechanism, the space change mechanism includes the hydraulic rod fixed connection in the right side of freezing storehouse, a plurality of the output fixed connection of hydraulic rod has the moving plate, the inside fixed connection of moving plate has the cylinder, the left side of cylinder is equipped with the round hole, through the air pressure reduction of freezing storehouse inside, make piston block drive support rod, and then make rubber block can closely with the inner wall of freezing storehouse and adhere, can improve the friction of moving plate and freezing storehouse, make moving plate be in stable state, can improve the sealing between moving plate and freezing storehouse simultaneously, change the space of freezing storehouse working cavity, and then the refrigeration efficiency is higher.

The utility model discloses a high-temperature steam cleaning machine which comprises a water tank, a water pumping pipe is arranged in the water tank, the top end of the water pumping pipe is connected with a water pump, the output end of the water pump is connected with an input pipe, the top end of the input pipe is connected with a steam generating device, and the output end of the steam generating device is connected with an output pipe. A spray gun is arranged at the top end of the output pipe, and an adjusting mechanism is arranged between the output pipe and the spray gun and comprises a connecting sleeve, a rotating sleeve, a connecting pipe, a matching sleeve, a screw rod, a connecting frame, a flow blocking piece, a guide groove, a supporting plate, a guide block and a limiting mechanism. The steam output quantity can be accurately adjusted between the spray gun and the output pipe through cooperation of a connecting sleeve, a rotating sleeve, a connecting pipe, a matching sleeve, a screw rod, a connecting frame, a flow blocking piece, a guide groove, a supporting plate, a guide block and other components.

The present application belongs to the field of environmental protection, and relates to a preparation method and application of a bimetallic single atom / attapulgite composite catalyst material. The present application first modifies attapulgite by using hydrogen peroxide, then weighs and ultrasonically dissolves palladium salt and transition metal salt in ethylene glycol solution, mixes the modified attapulgite with the palladium salt and transition metal salt solution, and uniformly stirs to obtain a mixed solution; the mixed solution is transferred to a reaction kettle for microwave solvothermal reaction, and finally transferred to a muffle furnace for calcination and grinding to obtain a PdM / ATP bimetallic single atom catalyst. The PdM / ATP bimetallic single atom catalyst prepared by the present application is uniformly loaded, which not only overcomes the low atom utilization rate of traditional Pd catalysts, but also overcomes the shortcomings of complex preparation and processing technology and high cost of single atom catalyst carriers, and has a good promoting effect on the catalytic oxidation of VOCs.

The utility model discloses a cavity convenient for equipment installation, which belongs to the technical field of cavities, and comprises a cavity and a second belt pulley, the top surface of the cavity is fixedly connected with an installation plate, one side of the installation plate is fixedly connected with a motor, an output shaft of the motor is fixedly connected with a first belt pulley, the outer wall of the first belt pulley is in sliding connection with a belt, and the second belt pulley is fixedly connected with a second belt pulley. The outer wall of the second belt wheel is in sliding connection with the belt; according to the utility model, the baffles are arranged inside, in the process of installing equipment, when the space in the cavity is relatively small, the bolts are screwed off to separate the corner connectors from the baffles and the cavity, and the round rods are drawn out from the space between the baffles, so that the baffles are taken out, and through the design, the change of the space in the cavity is realized; through the detachable baffle plate, the space in the cavity can be changed, so that proper space can be provided for different devices, and the installation difficulty is reduced.

This utility model relates to the field of respiratory rehabilitation technology and discloses a respiratory rehabilitation auxiliary training device. It includes a mouthpiece installed at one end of a first tube, a second tube threadedly connected to the end of the first tube away from the mouthpiece, a rotating disk threadedly connected to the bottom of the second tube, a retaining ring fixedly connected to the inner wall of the first tube, and an adjustment component installed inside the first tube for cooperating with the retaining ring to adjust gas flow. This utility model, through the setting of the adjustment component, rotates the mouthpiece, causing the connecting frame and rotating ring to rotate, thereby driving the screw to rotate and moving the circular plate. This changes the gap between the circular plate and the inner wall of the first tube after gas diversion, thus altering the gas flow resistance and achieving different levels of respiratory training.