33results about How to "Guaranteed neutral" patented technology

The invention relates to an impact loading mechanism comprising two sets of bracket arms, two bracket arm splints, an installation barrel, a seal cover, two sets of thrust force bearings, two sets of movable loading cones, a threaded sleeve, a spline shaft, two flange splines, two loading arms, two rod end joint ball bearings, two support columns, two impact loading rods and a joint ball bearing.The impact loading mechanism can convert the torque of the load input end of the spline shaft into the thrust force of the movable loading cones and apply the thrust force of the movable loading cones to the impact loading rods, and the impact loading mechanism can directly apply the thrust force or pull force of the load input end of the spline shaft to the impact loading rods through the first loading arm. Because mobile blocks on the movable loading cones can be movable or static, the distance between two loading points on a single impact loading rod can change along with time or keep unchanged. Thus, the dynamic synchronous multi-point movement simulation impact loading of the impact loading rods can be realized, and random dynamic or static shearing force and torque can be obtained at the roots of the impact loading rods.

The invention provides a process for refining battery-grade nickel sulfate from crude nickel sulfate. The process comprises the following steps: dissolving crude nickel sulfate with high-temperature water according to a certain ratio, carrying out solid-liquid separation to remove a part of calcium and magnesium impurities in crude nickel sulfate in a precipitation form, adjusting the pH value ofa solution obtained after water dissolution to a proper value by using calcium hydroxide, allowing iron to form an iron hydroxide precipitate and allowing calcium to form a calcium sulfate precipitate; according to different precipitation coefficients of sulfides of arsenic, copper, zinc and nickel, adding a certain amount of sodium hydrosulfide to enable copper sulfide, arsenic sulfide and zinc sulfide precipitates to be formed in the solution so as to remove impurity elements including copper, arsenic and zinc; adding sodium fluoride with a certain excess coefficient into a sulfurized solution to form calcium fluoride and magnesium fluoride precipitates and a fluorinated solution; adding sodium carbonate into the fluorinated solution to adjust a pH value, thereby forming a nickel carbonate precipitate and wastewater; adding dilute sulfuric acid with a certain concentration into nickel carbonate to partially dissolve the nickel carbonate so as to form a pure nickel sulfate solution and undissolved nickel carbonate, wherein the nickel sulfate solution is neutral, the undissolved nickel carbonate returns to a dissolving procedure, and subjecting the nickel sulfate solution to high-temperature evaporation crystallization to obtain battery-grade nickel sulfate meeting national standards in China.

The invention relates to a fan strip label shaping and shearing device, which has the advantages of simple structure, convenient use, one-step shaping and the like. The device comprises a female die and a male die, wherein contours of the two dies are consistent with the peripheral shape of a shaped label; a fit clearance is reserved between the two dies; the male die is connected with a datum plate; the shearing device is arranged on the datum plate; the datum plate is arranged on a guiding device; the male die is matched with a discharging plate; the discharging plate is connected with the datum plate; and a resetting device is arranged between the discharging plate and the datum plate.

The invention discloses a connecting device for inner and outer pipes of an MQL (Minimal Quantity Lubrication) system and belongs to the field of machining. The connecting device for the inner and outer pipes of the MQL system comprises a connecting housing A, a connecting housing B, a connecting inner core A, a connecting inner core B, a quick female adapter A, a quick female adapter B, a connecting inner core O-type sealing ring, a connecting inner core O-type sealing ring and a copper washer. The connecting housing A and the connecting housing B are in threaded connection with each other to ensure the alignment of the pipes and the stability and efficiency of connection. The connecting device can be in direct plug-in connection with the inner and outer pipes, the connecting housings and the connecting inner cores can be used in random combination during mounting, the connection is quick and stable, and the sealing is tight and reliable. Lubrication media have good transport flowability in the connecting device, and the connecting device cannot be blocked easily and has no leakage loss. Meanwhile, the connecting device can well isolate the lubrication media transported in the inner and outer pipes, avoids the phenomenon of mixing of the inner and outer lubrication media. The connecting device is small in size, light in weight, low in material consumption and cost and suitable for batch production.

The invention relates to the technical field of plastic film detection, and discloses a plastic film detection device which comprises a detection box, a controller is arranged outside the detection box, the controller is connected with the detection box, an adjusting motor is further arranged on the outer side of the detection box, the adjusting motor is connected with the detection box, the output end of the adjusting motor is provided with an adjusting disc, the adjusting disc is connected with the output end of the adjusting motor, the outer side of the adjusting disc is provided with an adjusting rod, the adjusting rod is connected with the adjusting disc, and one end of the adjusting rod is provided with a push rod. The plastic film detection device provided by the invention can be used for conveniently detecting a plastic film, and compared with a common detection device, the detection device provided by the invention can assist in film transmission, avoid film stretching and detect defects of the film, and the position of the detection sensor can be conveniently adjusted.

Belonging to the technical field of environmental geotechnical engineering, the invention discloses an integrated method for high organic silt high-efficiency dehydration and nutrient soil preparation. The method includes: adding 8%-10% by mass of ground phosphate rock into silt subjected to flocculating setting, and performing stirring to obtain a first silt mixture; adding 6%-8% by mass of dried crushed straw and 2%-4% of dried furfural residue into the first silt mixture, and performing stirring to obtain a second silt mixture; adding 1%-3% by mass of quick lime into the second silt mixture, and performing stirring to obtain a third silt mixture; subjecting the third silt mixture to dehydration treatment so as to obtain a mud cake; and mixing the mud cake with humus and kitchen garbage, and then performing crushing. The method provided by the invention synthesizes the integrated processing steps of high organic silt high-efficiency dehydration and nutrient soil preparation enhances the dehydration efficiency and is based on organic silt nutrient soil fertility, and the obtained nutrient soil has nutrient content close to the national organic fertilizer standard.

The invention discloses a high-centering precision clamp connecting device for a mechanical testing machine. The high-centering precision clamp connecting device for the mechanical testing machine comprises a clamping part, a fixing part and a connecting part, wherein a positioning convex conical surface is arranged on the end surface of one end, connected with the connecting part, of the clampingpart; a positive-tooth external thread is close to the positioning convex conical surface, and is used for connecting and locking the connecting part in a matching manner; a positioning concave conical surface is arranged on the end surface of the other end, connected with the fixing part, of the connecting part; a reverse-tooth external thread is close to the positioning concave conical surface,and is used for connecting and locking the connecting part in a matching manner; the connecting part is a connecting thread sleeve with a positive-tooth external thread and a reverse-tooth external thread at the two ends respectively. The high-centering precision clamp connecting device for the mechanical testing machine is compact in structure, light, convenient, low in production cost and easyto operate; meanwhile, extremely high centering precision of a clamp and a pull rod of the testing machine can be guaranteed during an experiment, and connection is steady; compared with the conventional flange plant connection, the connection way adopted by the invention can have the advantage that the axial position of the clamp is continuously adjustable.

The invention provides a motor. The motor comprises a rotating shaft, a rolling piece and an elastic piece; the rotating shaft is provided with a positioning part and a limiting part; the rotating shaft is sleeved with the rolling piece; the rolling piece is provided with a barrel and a rolling body; the rolling body is arranged between the barrel and the positioning part in a rolling mode; and the rotating shaft is sleeved with the elastic piece; and the two ends of the elastic piece abut against the limiting part and the rolling piece correspondingly. According to the motor of the invention,the assembling structure of the rotating shaft and the rolling piece is reasonably arranged, so that centering performance of the assembly of the rolling body relative to the rotating shaft is ensured, and therefore, the friction loss of the rolling piece during the operation of the motor is reduced, the service life of the rolling piece is prolonged, and the vibration noise of the motor is reduced, the operation stability and reliability of a product are improved; the initial pre-pressure of the motor in a start-stop stage is guaranteed through the assembly structure of the elastic piece, sothat the rolling body is prevented from being in an irregular free sliding state, and therefore, abnormal noise generated by the rolling piece during the start and shutdown of the motor is effectively avoided.

The invention discloses an odor treatment device for garbage power generation equipment and a use method of the odor treatment device. The odor treatment device comprises a washing box, and an acid washing chamber and an alkali washing chamber which are arranged in the washing box. The odor treatment device also comprises a filter box, a scraping mechanism, a manhole, a photolysis box and a discharge chimney. The filter box is arranged on one side of the washing box, an air inlet is formed in the end, away from the washing box, of the filter box, and a filter screen is installed in the filter box; the scraping mechanism is arranged on one side, far away from the air inlet, of the filter screen; the manhole is formed in the bottom of the filter box; the photolysis box is arranged on the other side of the washing box, a containing chamber and a photolysis chamber are arranged in the photolysis box, photocatalyst carriers are installed in the containing chamber, and UV lamps are installed between the adjacent photocatalyst carriers; and the discharge chimney is arranged above one end, far away from the washing box, of the photolysis box. According to the odor treatment device, the diversity of treatment modes of the odor treatment device is realized, and a very good treatment effect can also be achieved when odor with relatively high concentration is treated.

The invention relates to the technical field of optical fiber manufacturing equipment, and discloses a heating furnace for keeping centering of an optical fiber preform, the heating furnace comprises a furnace body, a heating piece and a rotating table, the rotating table is arranged above the furnace body, the upper end of the furnace body is connected with a detection piece through the rotating table, and the rotating table comprises a rotating ring and a base. According to the heating furnace for keeping centering of the optical fiber preform and the use method thereof, the eccentricity condition of the preform is measured through the detection piece, then the preform is directly adjusted in place through the movable clamp, starting and stopping in the centering process are reduced, centering errors are reduced, early warning is conducted when the preform is about to collide with the furnace wall, the preform is prevented from colliding with the furnace wall, meanwhile, the operation of secondary delivery is reduced, and the inner diameter of the heating piece is synchronously adjusted after the detection piece detects the outer diameters of different axial positions, so that the gap between the heating piece and the preform rod is always kept at the optimal distance, the heating uniformity is improved, and the wire drawing quality is improved.

The invention relates to a clamp capable of applying a pulling/pressing cyclic load to a CT test piece. The clamp is composed of a working unit and a pin unit. The clamp is connected with the testing machine through the clamping part of the working unit, and in order to prevent the clamp from sliding during loading, the roughness of the clamping surface needs to be increased; the CT test piece is placed in the groove of the working unit, when the clamp is used for providing a pressing-pressing cyclic load, the upper surface and the lower surface of the groove are directly in plane contact with the top end and the bottom end of the CT test piece, and when the clamp is used for providing a pulling-pulling cyclic load, the pin unit needs to be used for transmitting the load. Two different types of loads can be applied to the CT test piece, and the utilization rate of the clamp is increased; meanwhile, the structural form of the clamp is optimized, a pin unit does not need to be placed during compression loading, and the clamping time of the CT test piece is saved; and the anti-skid table is additionally arranged on the CT test piece, so that the CT test piece is prevented from moving left and right when the clamp performs plane compression loading, and the load centering property is ensured.

The invention discloses an iron roughneck spinning wrench lifting mechanism which comprises a supporting frame assembly. Composite roller bearing sets are installed at the left side and the right sideof the supporting frame assembly; the supporting frame assembly moves up and down in a guide body assembly; composite roller bearings are mounted at the left side and the right side of a frame body assembly, and the guide body assembly moves up and down in the frame body assembly; the upper end of the guide body assembly is connected with a supporting oil cylinder; the lower end of the supportingoil cylinder is hinged with the frame body assembly through a pin shaft; a connecting seat is connected with the frame body assembly through a bolt; one end of a hoisting loop chain is fixed on a lock catch a through a connecting shaft a, the other end of the hoisting loop chain is fixed on a lock catch b through a connecting shaft b, and the lock catch b is fixed on the connecting seat through abolt; a grooved wheel is mounted on a grooved wheel shaft through a self-lubricating bearing; and the supporting oil cylinder stretches out or retracts back to achieve vertical movement of the supporting frame assembly and the guide body assembly, and therefore vertical movement of a whole spinning wrench is achieved. The iron roughneck spinning wrench lifting mechanism is simple in structure andconvenient to disassemble, assemble and maintain.

The present invention proposes a spherical washer, which includes a concave ball washer and a convex ball washer that are used in pairs. The concave ball washer is a hollow cylinder with a through-hole of the concave ball washer inside and communicated with the concave ball washer. A concave spherical surface with the holes connected to and concave toward the through hole of the concave ball pad; the convex ball pad is a truncated hollow spherical body, and its side surface is a convex spherical surface that protrudes outwards; wherein, the concave spherical surface and the convex spherical surface are The spherical surfaces have the same spherical radius; the concave spherical surface is matched with the convex spherical surface, so that the concave spherical pad and the convex spherical pad are inlaid into one body. When the outer working surface is inclined or uneven, the concave ball pad and the convex ball pad of the spherical washer of the present invention can contact and adjust the alignment by themselves, so as to ensure the neutrality and contact area of ​​the carrier used by the outside world, thereby ensuring the smooth operation of the anchor cable sensor. The installation improves the installation efficiency, and has the characteristics of simple structure, low cost, easy installation and convenient use.

The invention relates to a preparation method of difluorobenzodioxole, which comprises the following steps: step 1, introducing chlorine and phosphorus trichloride at 0-80 DEG C according to a molar ratio of 1: (3-9) to react to prepare phosphorus pentachloride, and after the phosphorus pentachloride is prepared, refluxing for 1-4 hours to enable the chlorine and the phosphorus trichloride to react completely so as to prevent the phosphorus pentachloride from adhering to the wall; 2, benzodioxole is dropwise added into phosphorus pentachloride for 1-24 h, and the molar ratio of benzodioxole to phosphorus pentachloride in phosphorus pentachloride is 1: (0.5-1.5); after dropwise adding, refluxing for 1-24 hours at the temperature of 50-100 DEG C; removing the phosphorus trichloride solvent to obtain dichlorobenzodioxole; and 3, reacting dichlorobenzodioxole with hydrogen fluoride according to the molar ratio of (1.8-8): 1, dropwise adding hydrogen fluoride into dichlorobenzodioxole for 0.5-24 hours, reacting at the reaction temperature of 5-40 DEG C for 0.5-24 hours after dropwise adding, adjusting the pH value to 7-14, and distilling with water vapor to obtain dichlorobenzodioxole. The method is simple and easy to implement, the difluorobenzodioxole is obtained with high yield and high purity, the cost is low, the reaction conditions are mild, and the method is suitable for industrial mass production.

The invention discloses a vertical spinning machine comprising a machine body, a spindle device, three posts, a sliding frame device and a tail ejecting device. The spindle device is installed on the machine body, and the top of the spindle device is provided with a joint platform accommodating a workpiece; the posts are distributed on the periphery of the spindle device and are provided with a longitudinal transmission device; the sliding frame device is connected to the longitudinal transmission device and comprises a frame body, a machining unit and a transverse transmission device, the frame body is in an integral triangular structure, and the transverse transmission device drives the machining unit to move on the frame body transversely; the tail ejecting device is arranged above the sliding frame device and corresponds to the spindle device in position. The spindle is not subject to partial load, the rigidity is high, the accurate cylindrical part spinning and forming are guaranteed, the centering performance of the machining unit during radial feeding is guaranteed, and difficulty in assembling and debugging is lowered.

The invention provides a roller measuring device and a using method thereof. The measuring device comprises a clamp used for being fixed to the roller, a magnetic base installed on the clamp and a swing rod connected with the magnetic base, the two ends of the roller are arranged in two bearing pedestals in a penetrating mode respectively, the clamp comprises a first clamping plate made of a magnetic conductive material, and the magnetic base is attracted to the first clamping plate through magnetic force. In the measurement process, the clamp is fixed on the roller, the magnetic base providedwith aswing rod is placed on a first clamping plate of the clamp,the first clamping plate is made of a magnetic conductive material,and the magnetic base can be attracted to the clamp through magnetic force, so that the magnetic base and the swing rod are fixedly installed on the roller so as to meet the subsequent measurement requirement, the magnetic base can also be fixedly installed on the roller when the roller is a stainless steel roller due to the installation mode, then the requirement for measuring the stainless steel roller is met, and the measurement efficiency of the roller is improved.