72results about How to "Guaranteed ability" patented technology

The invention discloses an automobile rear torsion beam hub connecting support assembling surface machining device for milling and machining a plane containing two space angles. The automobile rear torsion beam hub connecting support assembling surface machining device comprises a fixture, a base and a milling and machining mechanism; the milling and machining mechanism comprises two parts which are arranged symmetrically at the left side and the right side of the fixture, wherein each part comprises a milling power head, a hydraulic sliding table, a guide rail, a milling power head tilt angle regulating mechanism and a guide rail angle regulating mechanism; the milling power head is installed on the hydraulic sliding table which is matched with the guide rail; and the guide rail is installed on the base. The automobile rear torsion beam hub connecting support assembling surface machining device provided by the invention has the characteristics of stable product machining quality, high guarantee capability and low manufacturing cost; the working efficiency is improved by 60% above compared with that of the traditional machining mode; the manufacturing cost is only one tenth of that of the traditional machining equipment; the mass production requirement is met; the automobile part production rhythm is accelerated; and the production capability of enterprises is improved.

The invention relates to the field of pesticide preparations, and provides a special suspension agent for flight plant protection. The special suspension agent includes, by mass percentage, 30-75% ofpesticide active ingredient, 1-10% of sodium bacillus subtilis, 5-20% of wetting agent dispersing agent, 1-10% of anti-evaporation agent, 1-5% of anti-drift agent, 1-3% of viscosity modifier and the water for supplementing to 100%. The special suspension agent for flight plant protection has good dispersion stability, spreadability, anti-drift and anti-evaporation performance.

The invention discloses selenium-enriched bacillus bifidus micro-capsules. The selenium-enriched bacillus bifidus micro-capsules are prepared by adopting a method comprising the following steps: uniformly mixing a sodium alginate solution with selenium-enriched bacillus bifidus thallus and calcium carbonate powder so as to obtain a mixture; dropwise adding the mixture into vegetable oil containingan emulsifier, and carrying out stirring so as to obtain an emulsion; sequentially adding vegetable oil containing glacial acetic acid and an emulsifier solution into the emulsion, carrying out stirring, and allowing standing; and then, separating oil phase so as to obtain aqueous phase, and centrifuging the aqueous phase so as to obtain the selenium-enriched bacillus bifidus micro-capsules. By screening reagents, materials and dosage ratio adopted in micro-capsule preparing, coating and freeze-drying processes, embedding rate of the selenium-enriched bacillus bifidus micro-capsules disclosedby the invention are improved. The embedding rate of the selenium-enriched bacillus bifidus micro-capsules is up to 98% while the particle size is smaller than 200 microns and the freeze-drying survival rate is up to 85%. According to normal-temperature stability results, viable number of the selenium-enriched bacillus bifidus micro-capsules is still about 10<8> cfu / g within 180 days.

The invention discloses a method for rapidly preparing high-quality two-dimensional black phosphorus crystals through seed crystal induction. The method comprises the following steps: a red phosphorusraw material, a catalyst and a transport agent are weighed and are placed at the bottom (a raw material end and a hot end) of a single-head sealed quartz tube in an inert atmosphere, the internal ofthe single-head sealed quartz tube is separated by using a porous gasket, a black phosphorus seed crystal is weighed and is placed at the top (a nucleating end and a cold end) of the single-head sealed quartz tube, and the above reaction raw materials are sealed in the quartz tube by using a vacuum tube sealing system; and then the quartz tube is heated through optimized programmed heating and cooling, and the high-purity and high-quality two-dimensional black phosphorus crystal is finally prepared after the reaction is finished. Compared with a traditional preparation method without using crystal seeds, the method of the invention has the advantages of significant reduction of the reaction temperature and the reaction time in the synthesis process, reduction of the energy consumption, effective reduction of the introduction amounts of the catalyst and the transport agent required by the reaction, and cost saving. The black phosphorus crystals synthesized by the method have the advantages of few impurities, high purity, good quality, and facilitation of industrial large-scale preparation of the black phosphorus crystals.

The invention discloses a low-temperature and low-salt tank type fermenting preparation method of broad bean sauce halves. The method comprises the following steps of A, pretreatment of broad bean halves; B, preparation of a fermenting material of the broad bean halves; C, tank type fermenting of the fermenting material of the broad bean halves: sending the fermenting material of the broad bean halves into a fermenting tank, controlling the water content in the fermenting material of the broad bean halves in the fermenting tank to be smaller than or equal to 50% and the content of edible salt to be 8 to 11%, and fermenting by controlling the temperature to 15 to 20 DEG C; after fermenting for 13 to 15 days, adding lactobacillus powder; after 3 to 4 days, adding saccharomyces rouxii powder and torulopsis powder to continue to ferment; fermenting for 76 to 180 days in total, so as to obtain the broad bean sauce halves. The method has the advantages that the quality requirements are met, the fragrance and delicate flavor of a product are further improved, and the problem of pollution in the preparation process is solved; the particular flavor of the traditional fermented sauce halves is reserved, the land occupation area is small, the method is suitable for large-scale industrialized production, and the market demand amount of Pixian bean halves is met.

The invention reolates to a rotary roller device for cleaning textile machine comprising a freely rotated cleaning piece (20) mounted on roller which is movably supported by guide piceces (21,22,24). In order to improve the cleaning effect and prolong the maintenance period, it is suggested that the cleaning piece should be constructed by brush roller (20).

The invention discloses an intelligent audio system. The intelligent audio system comprises a digital signal processor (DSP), a power amplifier and a horn, wherein the DSP integrates a horn model; the horn model is used for describing relationships between the output power of the power amplifier and the amplitude of a horn diaphragm and between the output power of the power amplifier and the temperature of the horn diaphragm; and the DSP controls real-time output power of the power amplifier based on the horn model so as to control the output volume of the horn. Therefore, the intelligent audio system can ensure that sound distortion or horn damage is not caused when the horn performance is played as far as possible.

The invention discloses a diode artificial circuit model which comprises a forward direction diode model, and further comprises a voltage-controlled current supply and a parasitic resistor, wherein the voltage-controlled current supply and the parasitic resistor are connected between an end P and an end N of the diode model in series, reverse breakdown current of the forward direction diode model is zero, and the current valve of the voltage-controlled current supply is as follows. According to the diode artificial circuit model, model precision and flexibility of reverse characteristics of the diode are improved, both good registration accuracy of forward working current of the diode and good registration accuracy of backward breakdown current of the diode are achieved.

The invention discloses a creep compound feed for piggies and a preparation method of the creep compound feed. The creep compound feed comprises the following components in parts by weight of 20-40 parts of corn, 5-15 parts of puffed corn, 5-15 parts of whey powder, 5-10 parts of puffed soybeans, 5-15 parts of soybean meal, 1-5 parts of fermented soybean meal, 2-5 parts of nonfat dry milk powder,3-5 parts of whole milk powder, 1-5 parts of cane sugar, 1-5 parts of fish meal, 0.5-2 parts of soybean oil, 0.1-0.2 part of a composite microecological preparation, 0.05-0.2 part of glyceryl tributyrate, 0.5-1.5 parts of an organic composite acidulant, 0.5-1.0 part of organic mineral premix agents, 0.02-0.05 part of a vitamin premix agent, 0.05-0.2 part of a composite enzyme preparation, 0.3-0.8part of stone powder, 0.6-1.5 parts of calcium hydrogen phosphate, 0.1-0.4 part of table salt, 0.8-1.5 parts of amino acids, 0.05-0.3 part of choline chloride and 0.03-0.08 part of a mildewproof agent. The compound feed disclosed by the invention can help the piggies to establish a stable microflora as soon as possible, can effectively stimulate development of the intestinal tracts of the piggies,can help repairing of intestinal tract damage of the piggies, and can relieve postweaning diarrhoea of the piggies.

The invention discloses a biodegradable Zn-Mg-Zr alloy material. The biodegradable Zn-Mg-Zr alloy material is characterized in that the Zn-Mg-Zr alloy material comprises, by mass, 0.0001-10% of Mg, 0.0001-5% of Zr and the balance Zn. The alloy material is low in cost, nontoxic, excellent in mechanical property, low in degradation rate and excellent in biocompatibility. The invention further discloses a preparation method of the biodegradable Zn-Mg-Zr alloy material. The method is easy to implement and low in cost, plate-shaped and rod-shaped materials with different size and cross section requirements can be prepared as required, and the method can be used for preparation of bone lamellas, bone nails and other bone implantation materials as well as cardiovascular stents and other medical materials.

The invention a periodic permanent magnetic focusing structure and assembling components. The assembling components comprise a fixed baseboard, a zigzag positioning board, a plurality of set screws, and a plurality of extrusion screws. The fixed baseboard and the zigzag positioning board are provided with a plurality of holes separately. The zigzag positioning board is located on the fixed baseboard. The set screws are arranged in the holes and the zigzag positioning board is fixed on the fixed baseboard. The periodic permanent magnetic focusing structure is arranged on the fixed baseboard at the middle portion. The zigzag positioning board is provided with a zigzag slot. Two ends of the zigzag positioning board are provided with two screw holes separately. The extrusion screws pass through the screw holes in two ends of the zigzag positioning board to extrude and restrain the focusing structure in the y direction to make magnetic steels and magnetic boots in the focusing structure are in close fit, and make the zigzag positioning board 22 used to limit the positions of the magnetic steels and the magnetic boots in the x direction and maintain the degree of freedom of the magnetic steels of the magnetic boots in the y direction; a gasket is arranged between the fixed baseboard and the positioning board, and the focusing structure is pushed out by screwing the set screws successively.

The invention provides a drivepipe type purification device capable of efficiently removing pesticide residuals of an agricultural field water body. The drivepipe type purification device structurally comprises a hollow organic glass outer tube, a PVC transparent inner tube, an organic glass tank, an organic glass clapboard, a moving type arresting barrier and a clamping trough, wherein the PVC transparent inner tube is arranged in the hollow organic glass outer tube, and the moving type arresting barriers are arranged on two ends of the hollow organic glass outer tube; the hollow organic glass outer tube and the PVC transparent inner tube are assembled to form a purification drivepipe which is positioned in the organic glass tank, the clamping trough is arranged on the inner wall of the organic glass tank, and the organic glass clapboard is fixedly arranged on the clamping trough; a nanocatalyst loading layer is covered on the outer surface of the hollow organic glass outer tube, and pesticide degradation bacteria loading layers are arranged on the inner surface and the outer surface of the PVC transparent inner tube. The drivepipe type purification device has the advantages of improving the efficiency of removing pesticide residuals of an agricultural field water body, being convenient to apply, low in cost and capable of being repeatedly used for many times.

The invention provides a low-temperature and low-salt tank type circulating fermentation preparation method of thick broad-bean sauce. The method comprises the following steps: A, carrying pretreatment on broad beans; B, making broad bean koji; C, carrying out tank type fermentation on the broad bean koji: sending the broad bean koji into a fermentation tank, enabling the water content of the broad bean koji in the fermentation tank to be less than or equal to 50%, enabling the salt content of the broad bean koji to be 8-11%, controlling the temperature to be 15-20 DEG C, and carrying out fermentation; when fermentation is carried out for 13-15 days, adding 1-4 per thousand of lactobacillus powder for carrying out fermentation, continuously fermenting for 3-4 days, and then adding 1-4 per thousand of yeast powder for continuously fermenting; fermenting for 76-180 days in total so as to obtain the thick broad-bean sauce. The preparation method of the thick broad-bean sauce not only can meet the requirement for quality and avoid the external pollution in a making process, but also maintains the unique flavor of the traditional fermented bean sauce; the preparation method is less in land occupation and suitable for large-scale industrial production, and meets the market demand of Pixian bean sauce.

The invention relates to a cosmetics composition, a washing care agent comprising the cosmetics composition, application of the washing care agent and a use method of the washing care agent. The cosmetics composition comprises a polymerization product, wherein the polymerization product is obtained through the reaction of a system comprising an anionic polymer, an amphoteric polymer and water, theweight ratio of the anionic polymer to the amphoteric polymer is 1:100-100:1, the weight sum is not less than 0.1%. The cosmetics composition is prepared from, by weight, one optional cationic polymer, one optional active ingredient, one optional additive and one optional medium accepted by cosmetics.

The invention belongs to the technical field of air spring products, and particularly discloses an air spring structure provided with an auxiliary air chamber. The air spring structure comprises an upper cover, a flanging upper compression ring, a rubber air bag body, a lower compression ring and a piston which are sequentially connected according to the order of sequence, an opening part at the upper end of the rubber air bag body is installed on the upper cover through the flanging upper compression ring, an oblique bulge is arranged on the upper cover, and an opening part at the lower end of the rubber air bag body is installed on the piston through the lower compression ring; and a piston cover is further arranged at the top of the piston, a buffer block is installed on the piston cover in a matched mode, an orifice is formed in the buffer block, and the buffer block divides a cavity formed by the rubber air bag body and the piston into a main air chamber of the interior of the rubber air bag body and the auxiliary air chamber of an inner cavity of the piston. According to the air spring structure, the damping effect of driving cabs of trucks, especially medium-sized trucks orheavy-type trucks with the load capacity being large can be effectively improved, a failure protection mechanism is designed, the safety and the comfort of the air spring structure are greatly improved, and the requirement of a market for light weight is met.

The invention relates to a method for controlling the aging of an ultrafiltration membrane by strengthening chemical cleaning through a micro-nano bubble technology. According to the invention, a contact area between a chemical cleaning agent and membrane pollutants is enhanced by using the characteristics of stability, large specific surface area, high mass transfer and the like of micro-nano bubble colloids; and meanwhile, active oxygen generated due to high interface charge and cavitation reacts with pollutants to facilitate desorption of organic pollutants. The invention mainly relates tothree steps, namely pure water spray washing and backwashing, cleaning of an ultrafiltration membrane by using an appropriate exposure-dose chemical cleaning agent enhanced by the micro-nano bubble technology, and pure water re-washing, wherein the cleaning time of each step is within the range of 10-180 minutes. According to the method, required membrane cleaning effect is achieved, and the initial performance of the membrane is recovered; compared with conventional chemical cleaning, a membrane flux recovery rate is increased by 0.5-2.6 times; and most importantly, the irreversible influenceof chemical agents on physical / chemical characteristics and filtering performance of the membrane in a conventional chemical cleaning process of the ultrafiltration membrane at present is effectivelyrelieved, the service life of the ultrafiltration membrane is prolonged and the aging process of the membrane is further controlled.

The invention discloses a pot type fermentation preparation method of dark reddish brown broad bean paste. According to the pot type fermentation preparation method, a broad bean brewing material is sent into a fermenting tank, the lower portion of which is arranged with partition plate in radial direction to enable a moisture content of the broad bean halves yeast material in the fermenting tank to be smaller than or equal to 50wt% and a salt content to be 8 to 15wt%, temperature is controlled as 15 to 40 DEG C to ferment, lactic acid bacteria powder is added when fermenting is performed on the 13th to 15th day, then saccharomyces rouxii powder and torulopsis utilis powder are added to ferment continuously after 3 to 4 days, fermenting temperature is increased to 35 to 50 DEG C 30 days before fermentation finishes, glucose is added at the same time, and the dark reddish brown broad bean paste can be obtained after fermenting for total 45 to 180 days. The pot type fermentation preparation method disclosed by the invention has the advantages of not only meeting the requirement on quality, but also further improving fragrance and delicate flavor of a product, avoiding the problem of pollution in a manufacturing process, meanwhile obtaining the dark reddish brown broad bean paste through biological coloring, enriching product varieties, keeping unique flavor of traditional fermented bean paste, meeting different application and market requirements of Pixian horsebean chili paste, realizing small land occupancy and being suitable for large-scale industrial production.

The invention relates to the technical field of agricultural microorganisms, ecological planting, aquaculture and microbial agents, and especially relates to a long-acting quality-guaranteeing compound microbial agent and a preparation method thereof. The composite microbial agent comprises a liquid aerobic microbial agent and a liquid anaerobic microbial agent, and the liquid aerobic microbial agent comprises a liquid Streptomyces microflavus agent, a liquid Bacillus subtilis agent, a liquid Bacillus amyloliquefaciens agent and a liquid Bacillus mucilaginosus agent; and the liquid anaerobic bacteria agent comprises liquid photosynthetic bacteria, a liquid Saccharomyces cerevisiae agent, a liquid Lactobacillus plantarum agent and a liquid Lactobacillus acidophilus agent. The composite microbial liquid agent and the preparation method thereof solve the problems of single strain, short storage life and unobvious fertilizer efficiency of microbial agents.

The invention discloses an environment-friendly flue gas desulfurization system. The system comprises a desulfurization tower body. A gas outlet is connected to the outer surface of the upper end of the desulfurization tower body in a penetrating mode. Four sets of supporting columns are fixedly installed at the positions, close to the edge, of the outer surface of the lower end of the desulfurization tower body. According to the device, an anti-blocking shell can be arranged, when water enters the anti-blocking shell from a water storage cavity and enters a flowing cavity through a second water inlet, the impact force of the water flow drives a fan to rotate, so that the problem that in actual work, after the furnace tail gas is filtered by a filter screen for desulfurization, fine calcium sulfate and calcium sulfite solid precipitate particles contained in the generated liquid can easily collide with and contact the surface of the filter screen and be stacked under the inertia effect when flowing along with the liquid, and a pipeline is blocked by filtered impurities after long time is avoided, it is guaranteed that the filter screen normally plays a role, and the overall practicability is improved.

The invention relates to a power-down protection lock device. The lock device comprises a lock body, a power-down protection mechanism and an unlocking mechanism; the lock body is connected with a power supply, and a door body is opened and closed through the lock body according to a control signal; the power-down protection mechanism is correspondingly connected with the power supply and the doorbody and is used for locking the door body during outage; and the unlocking mechanism is connected with the power-down protection mechanism and is used for driving the power-down protection mechanismto withdraw locking of the door body. Compared with the prior art, the power-down protection lock device has the advantages that by configuring the power-down protection mechanism, the door body canbe automatically locked during outage, so that the technical defect that an electromagnetic lock is in an out-of-control state when the power supply is powered down is overcome, the electromagnetic lock is enabled to play a role during outage, and the electromagnetic lock can be controlled in real time; and in addition, by the arrangement of the unlocking mechanism, the locking of the power-down protection mechanism can be manually relieved, and the situation that a door cannot be opened after being automatically locked is avoided.

The invention relates to the technical field of automobile air conditioners, and particularly relates to a control method of an automobile air conditioner ultraviolet lamp array, an automobile air conditioner and an automobile. The control method comprises the steps that a timer module and a timer power supply module are arranged on the mainboard of the automobile air conditioner, when the automobile air conditioner is started, the air conditioner mainboard directly controls the ultraviolet lamp array to be turned on and charges the timer power supply module, and when the automobile air conditioner is not started, the turn-on time of the ultraviolet lamp array is judged through the accumulation timing function of the timer module. The timer module can automatically accumulate shutdown timing when the air conditioner is shut down; when the shutdown timing duration reaches a threshold value, the ultraviolet lamp array is turned on for sterilization; when the ultraviolet lamp array is turned on, the timer module accumulates automatic startup timing, the ultraviolet lamp array is turned off after the automatic startup timing duration reaches a threshold value, the ultraviolet lamp array can be intelligently controlled to perform sterilization when a user does not turn on the air conditioner for a long time, the automobile air conditioner is prevented from generating peculiar smells, and the user experience is improved.

The invention discloses a flame-retardant curtain wall insulation board which comprises a board body and a board face. The board body is square, a square groove is formed in the back face of the board face, the board body is arranged in the groove in the back face of the board face, and the board body and the board face are made of a hard polyurethane foam material. A flame-retardant layer is arranged on the surface of the board face, a fire retardant layer is arranged in the board face, and the area of the fire retardant layer is larger than the surface area of the board body. A strengthened insulation layer is arranged in the board body and formed by arranging an insulation material in the middle of a cube metal box in a vacuumized mode, the board face and the back face of the board body are provided with sawtooth-shaped anti-falling grooves, and the board body and the board face are integrally formed. The insulation board is firm in bonding, not likely to peel off, good in insulation performance and flame-retardant performance and long in service life.

The invention relates to the field of mechanical support equipment and in particular relates to a spherical support device. A pair of wearable steel balls capable of rotating universally is used as a support piece in the device. A fluorine cushion plate is laid on the contact surface of an inner ball base and the wearable steel balls. The wearable steel balls and the fluorine cushion plate form afriction pair having the characteristics of low friction coefficient and rapid rotating and sliding. The ball base is composed of inner and outer ball bases, the fluorine cushion plate, a shock absorption pad, a pressure cover, an adjustable pad, a felt, an oil cup, a screw and a ball base bottom plate. The inner and outer ball bases are installed on the ball base bottom plate through the screw. The outer ball base is used for pressing the inner ball base on the lug boss of the ball base bottom plate through the fluorine cushion plate. A rubber shock absorption pad is arranged between the lugboss of the ball base bottom plate and the groove of the inner ball base. A clearance is between the outer plane of the groove of the inner ball base and the outer plane of the lug boss of the ball base bottom plate so as to ensure that the shock absorption pad plays a role. The felt is arranged at the flange of the pressure cover. The felt surface tightly resists the wearable steel balls. The pressure cover is fixed on the outer ball base by the screw through the adjustable pad. The adjustable pad is used for adjusting the pressure of the pressure cover which is applied to the wearable steelballs. The centre line of the ball base and the vertical centre line of the spherical support device form an included angle of 15 degrees so as to be advantageously for centring and stabilizing a sleeve in the event of being disassembled and assembled.

The invention provides a large-span prefabricated ribbed prestressed hollow bidirectional laminated slab. The large-span prefabricated ribbed prestressed hollow bidirectional laminated slab comprisesprefabricated bottom plates, longitudinal ribs, transverse ribs and a post-cast layer, wherein the longitudinal ribs and the transverse ribs are arranged on the bottom plates in a staggered mode to form cells provided with light filling blocks; prestressed steel strands are arranged in the longitudinal ribs in the longitudinal direction, and steel bar meshes composed of longitudinal steel bars andtransverse steel bars are arranged in the bottom plates and positioned below the prestressed steel strands; a plurality of shear-resistant steel bars are pre-buried in the longitudinal ribs and the transverse ribs and protrude out of the upper surfaces of the longitudinal ribs and the transverse ribs, and a plurality of shear-resistant steel bars are pre-buried in the bottom plates and protrude out of the upper surfaces of the light filling blocks, and slurry leakage holes are pre-formed in the positions, provided with the shear-resistant steel bars, in the light filling blocks; connecting steel bars in lap joint with the transverse steel bars in the adjacent bottom plates are arranged in a joint area, and longitudinal through-length constructional steel bars are arranged; and laminated slab upper steel bars are arranged in the post-cast layer. The large-span prefabricated ribbed prestressed hollow bidirectional laminated slab is light in self-weight, free of reverse arches and suitable for guaranteeing cooperative work among bidirectional plates, the post-cast layer and the prefabricated plates, formwork erecting is not needed in the joint area, post-tension prestressed steel bars are not arranged, the structural stress is reliable, and the construction efficiency is high.

The invention belongs to the technical field of aluminum alloy doors and windows, and particularly relates to an aluminum alloy door and window with functions of high compression resistance, corrosionresistance and energy saving. The aluminum alloy door and window comprises hollow glass, a window frame and a dust removal device. The window frame is formed by splicing an upper frame, a lower frameand two transverse frames connected with the upper frame and the lower frame. The end of the hollow glass is embedded into a limiting groove in the inner surface of the window frame and is in close contact with the window frame. The dust removal device is arranged at the joint of the surface, close to the outdoor space, of the hollow glass and the inner surface of the window frame. According to the aluminum alloy door and window, the dust removal device is arranged at the joint of the surface, close to the outdoor space, of the hollow glass and the window frame, so that dust removal cloth wound on the outer surface of a dust removal roller acts on the surface, located outdoors, of the hollow glass, and therefore dust attached to the surface, located outdoors, of the hollow glass is effectively removed, and meanwhile the working safety of cleaning personnel is also ensured.

The invention discloses a device for adjusting the pressure of a titanium tetrachloride repository and a using method thereof, belongs to the technical field of metallurgy, and solves the problem thatthe existing exhaust gas treatment device cannot sufficiently absorb acid gas and is prone to back suction when pressing. The device of the invention includes a safety tank, a concentrated sulfuric acid absorption tank and an alkali liquid absorption tank which are sequentially connected, wherein an acid addition port is arranged on the concentrated sulfuric acid absorption tank, an alkali addition port and a vent hole are arranged on the alkali liquid absorption tank, and the safety tank is connected with an exhaust pipe of the titanium tetrachloride repository; a three-way valve is arrangedon a pipeline between the concentrated sulfuric acid absorption tank and the alkali liquid absorption tank, and the three ends of the three-way valve are respectively connected with the concentratedsulfuric acid absorption tank, the alkali liquid absorption tank and an air pipeline. When the pressure is released, the moisture and acid gas in the exhaust gas is absorbed through the safe tank, theconcentrated sulfuric acid absorption tank and the lye absorption tank and then the exhaust gas is discharged. When pressing, the air enters a repository tank through the concentrated sulfuric acid absorption tank and the safety tank. The device of the invention has the advantages of greatly reducing the emission of harmful gas in the exhaust gas, and the safety tank plays a role of back suctionprevention when pressing.

The invention discloses a method for processing a bolt hole for a framework gearbox mounting seat. The method comprises the following steps of 1) installing a first drill bit on a knife handle, and processing a first bolt hole in a first seat plate, wherein the length of installing the first drill bit and the knife handle together is smaller than a distance between the first seat plate and a second seat plate, and the outside diameter of the knife handle is smaller than equal to the pore diameter of the first bolt hole; 2) disassembling the first drill bit; 3) placing a second drill bit between the first seat plate and the second seat plate, and enabling the second drill bit to penetrate through the first bolt hole and be installed on the knife handle; 4) utilizing the second drill bit toprocess a second bolt hole in the second seat plate, and disassembling the second drill bit after drilling. The method provided by the invention can process the bolt holes of the two seat plates without adding special equipment and procedure, solves the problem that the existing standard twist drill cannot process the bolt holes of the two seat plates at the same time and reliably ensures a production takt of a production line.

The invention aims to provide a drilling and milling screw tap. By the aid of the drilling and milling screw tap, the quality of products can be improved while the internal thread machining work efficiency is effectively improved. The drilling and milling screw tap comprises a shank and an edge portion. The edge portion is mounted at an end of the shank. The drilling and milling screw tap is characterized in that the edge portion comprises a spiral hole drilling edge, a side edge and a platy cutting edge, the spiral hole drilling edge is arranged at an end of the edge portion, the side edge with threads is close to the shank, and the platy cutting edge is arranged between the hole drilling edge and the side edge and is parallel to the axis of the edge portion. The drilling and milling screw tap has the advantages that when internal threads are machined, the hole drilling edge is in contact with a workpiece at first, holes can be drilled in the workpiece, then the inner walls of the holes are finely machined by the cutting edge and become smooth, the rear-end side edge with the threads is in contact with the workpiece ultimately, the threads can be milled in the drilled holes, accordingly, tool changing can be omitted in integral work procedures, the coaxiality can be guaranteed in hole drilling procedures and thread milling procedures, and the machining efficiency and the machining quality can be improved.

The invention provides a linear motor. The linear motor comprises a shell and a vibration assembly. The vibration assembly is located in the shell. Gaps are formed between the left and right sides of the vibration assembly and the inner wall of the shell; the opening directions of V-shaped springs on the left side and the right side of the vibration assembly are opposite or in the same direction; each V-shaped spring comprises a corner end, a first connecting arm and a second connecting arm; and the end of the first connecting arm is fixed to the inner wall of the shell, the end of the second connecting arm is fixed to the outer wall of the vibration assembly, a gap is reserved between the outer wall of the corner end and the inner wall of the shell, and the space between the first connecting arm and the inner wall of the machine shell and / or the space between the outer wall of the second connecting arm and the outer wall of the vibration assembly are / is filled with first damping parts. Dampers are added between the outer walls of the springs and the shell or the vibration assembly and at the corner ends of the springs, and the dampers work independently or are matched with one another to obtain dampers with different sizes and different effects.