42results about How to "Effective anti-corrosion" patented technology

The invention discloses a pork fresh-keeping agent with an excellent fresh-keeping performance. The pork fresh-keeping agent is characterized by comprising the following materials in parts by weight: 20-40 parts of clove and cinnamon compound extracting solution, 5-15 parts of pomegranate extracting solution, 2-5 parts of chitosan, 3-6 parts of trehalose, 2-6 parts of propolis, 3-8 parts of lysozyme, 1-4 parts of tea polyphenol, 2-5 parts of Epsilon-polylysine, 1-4 parts of acetic acid, 1-3 parts of sodium lactate, 1-3 parts of grape-seed essential oil, 1-3 parts of orange essential oil and 2-4 parts of bacillus natto. The invention also discloses a preparation method of the pork fresh-keeping agent with the excellent fresh-keeping performance. The pork fresh-keeping agent disclosed by the invention has excellent preservative and fresh-keeping performances.

The invention relates to a novel environment-friendly building brick and a preparation method, and belongs to the technical field of waste disposal. The building brick comprises silicate cement, gypsum, a GCY activating agent, an MSZ168-C additive, coarse slag, fine slag and magnetized water. The preparation method comprises steps as follows: firstly, slag discharged by a slag waste incineration power plant is subjected to a series of pretreatment of hydrolytic tank washing, crushing screening, magnetic separation, flotation separation and screening of 3-15 cm particles, the slag and the MSZ168-C additive are added into an agitation tank by using a forced mixer according to a set proportion, the GCY activating agent is diluted in the magnetized water magnetized by a magnetizer, the mixture and cement are jointly added for agitation, and maintenance is performed after compression molding, so that a finished product is obtained. According to the novel environment-friendly building brick and the preparation method, the slag is prepared into a mold brick without firing, the preparation time is shortened, the burning energy consumption is reduced, emission of harmful gas in a burning process is avoided, and the environment protection effect is remarkable; and the manufactured brick is high in strength, light in weight and good in thermal insulation property, and the requirement for light mass, energy conservation and thermal insulation of wall materials of a modern building can be met.

Disclosed is a chromate-free passivation treatment process for aluminum profile material. The chromate-free passivation treatment process specifically comprises the steps of ash removal, deslagging rinsing, oil removal degreasing, activation degreasing, rinsing, hot dip galvanizing, rinsing, chromate-free passivation and rinsing. The process is simple and orderly. Degreasing and galvanizing are added based on a traditional process, so that the life of the profile material is prolonged, and the surface strength of the profile material is increased; the profile material is oxidation-resistant for a long time; meanwhile, a layer of thin film is formed on the surface of the profile material, and the thin film protects the surface of the profile material effectively, so that the profile material is oxidation-resistant and corrosion-resistant. The process makes the chromate-free passivation treatment on the profile material more perfect.

The invention discloses a method for rapidly restoring a foreshore wetland outside a levee. The method includes the steps: restoring a foreshore area with serious wind wave erosion and great difficulty in vegetation restoration outside the levee; lifting a base close to a levee area to form a rapid restoration area suitable for wetland plant growth, laying grass planting bags and planting reed wetland plants to rapidly form wetland vegetations; constructing a permeable dam at the outer edge of a grassed area, impacting the permeable dam by gentle water flow and densely covering the outer edge with pine piles to stabilize the permeable dam; densely covering an outer base of the permeable dam with pine piles in a circular form, lifting the base in a circle to form a plurality of plant island hills serving as an ecological conservation area, planting meadow rushes and local cattail wetland plants in the island hills and densely covering the outer sides of the plant island hills with wave dissipation piles. After the wetland vegetations in the ecological conservation area are mature, the ecological conservation area can serve as a provenance, and natural extension of surrounding wetlands is promoted. By technological means of multilayer wave dissipation and earthwork balance, the foreshore wetland with serious wind wave erosion outside the levee is rapidly restored, and stability of a wetland ecological system and functions is improved.

The invention provides a chlorine stop valve which relates to a valve. The chlorine stop valve comprises a valve body, and an inlet passage and an outlet passage at the lower end of the valve body, wherein a valve cover is arranged at the upper end of the valve body; a valve rod penetrates through the valve cover; the upper end of the valve rod is connected with a hand wheel assembly; the lower end of the valve rod is connected with a valve clack assembly; a gland packing and a pressing plate are arranged between the valve rod and the valve cover; a corrugated pipe is arranged at the lower section of the valve rod; one end of the corrugated pipe is welded on the valve cover and the other end thereof is welded on the valve rod; and a valve clack is matched with a valve port sealing surface between the inlet passage and the outlet passage. The chlorine stop valve is characterized in that the valve cover is short; the valve body adopts a long neck design; the total height of the short valve cover is less than the maximum outside diameter of the valve cover; and the vertical distance from an upper plane of a middle flange of the long neck valve body to the highest point of a side flange of the valve body exceeds 1.5 times the diameter of a flow passage. The chlorine stop valve has the advantages that the chlorine stop valve is self-cleaning, long in service life, higher in overall safety, and convenient to dismount, maintain and replace.

The invention discloses a novel antibacterial and antiviral preparation, a resin, a decorative paper and a plate, and belongs to the technical field of furniture plates. A preparation method of the novel antibacterial and antiviral plate is simple, polyether alkali metal salt is prepared by catalyzing ring opening of ethylene oxide, polyether sulfonate is prepared and synthesized by catalyzing ring opening of 1, 3-propane sultone, the polyether sulfonate is compounded with an antifungal agent and a plant extract to prepare an antibacterial and antiviral preparation, and the ratio of all components is reasonably adjusted to synthesize the melamine formaldehyde resin, so that the resin is compatible with a preparation, and the plate with antibacterial and antiviral effects is prepared by utilizing a gum dipping process and a high-temperature and high-pressure pressing process. The preparation process is simple, green and environmentally friendly and has remarkable economic benefits, and the preparation, the resin, the decorative paper and the plate have long-acting antibacterial and antiviral performance, are environmentally friendly and healthy, effectively resist corrosion and dirt and prolong the service life of board furniture.

The invention discloses an environment-friendly fireproof coating, the coating is prepared from the following components in parts by weight: 10-20 parts of vinyl-modified hyperbranched polyphosphate,5-10 parts of acrylate-modified p-aminophenyl calixpyrrole, 50-70 parts of 1, 3-bis (oxiranylmethyl)-5-(2-propenyl)-1, 3, 5-triazine-2, 4, 6 (1H, 3H, 5H)-triketone / 3, 3 '-diamino-4, 4'-difluorodiphenyl sulfone polycondensate, 0.5-1.5 parts of an initiator, 15-25 parts of an inorganic filler, 1-3 parts of a defoamer and 1-3 parts of a dispersant. The invention also provides a preparation method ofthe environment-friendly fireproof coating. The environment-friendly fireproof coating disclosed by the invention is good in comprehensive performance, remarkable in fireproof and flame-retardant effects, good in water resistance, decoration and storage stability, environment-friendly and pollution-free.

The invention relates to a cathodic protection system for a wet desulfurized funnel, which is used for the treatment of corrosion on the wet desulfurized funnel in a thermal power plant. The wet desulfurized funnel comprises a basal body surrounding the funnel, wherein the basal body is provided with an inner wall and an outer wall, an outlet of the wet desulfurized funnel is formed at the end part of the basal body. The cathodic protection system of the wet desulfurized funnel comprises an acid resisting layer which is arranged along the inner wall, an anode screen which is laid in the acid resisting layer, a reference electrode which is embedded in the acid resisting layer, and a measurement grounding device, a cathode and a constant potential rectifier which are arranged on the outer wall of the wet desulfurized funnel, wherein the reference electrode, the measurement grounding device, the cathode, and the anode screen are respectively led out by cables and are connected with the constant potential rectifier. Since the cathodic protection is combined based on the acid resisting layer, corrosion can be effectively resisted, and the acid resisting property is excellent; and meanwhile, the acid resisting layer is compact, flaws are not easy to occur, and the leakage resisting property is good, the load of the funnel can be reduced after the cathodic protection is applied, the service life of the funnel is long, and economic benefits are significant.

The invention discloses a stainless steel surface treatment method capable of improving the anti-corrosion capacity. The stainless steel surface treatment method comprises the following steps that a steel sample with the size being 15*15*10 mm is cut to serve as a base material, and AlN is selected to serve as a source electrode material; the steel sample is subjected to abrasive paper grinding and mechanical polishing many times and then sequentially cleaned and dried; and aluminum diffusion treatment is conducted through a double-layer glow plasma surface alloying vacuum furnace, a stainlesssteel cylinder serves as an auxiliary cathode, the base material and the AlN are placed in the auxiliary cathode, surface treatment begins to be conducted, and the sample is cooled to be the indoor temperature with a furnace after treatment. According to the stainless steel surface treatment method capable of improving the anti-corrosion capacity, operation is easy, the implementation process isenvironmentally friendly and free of pollution, and the combining force between a diffusion layer and a base body is increased; AlN is selected to serve as the source electrode material and can generate N2 in a reaction, other oxidation reactions are avoided, and the cleanliness of the surface layer of steel is improved; and an anti-corrosion aluminium oxide surface layer can be formed on the surface of the stainless steel with the passage of time, after an oxidation film is formed on the surface, further infiltration of oxygen atoms can be effectively prevented, and the overall surface performance is stable.

The invention relates to a low smoke zero halogen composite material with functions of water resistance, fire protection and flame retardance. The material comprises the following raw materials in percentage by weight: 70-80 polyethylene (PE) resin, 10-20 plasticizer, 2-5 stabilizing agent, 2-3 lubricant, 5-10 flame retardant, 1-2 PE (Polyethylene) foaming agent, 2-3 hydrophobing agent, 10-20 carbonizing agent, 1-3 elastomer (TPE) and 10-20 PE synthesizing agent. The composite material can be produced to corresponding products or functional structure layers of the products through the extrusion moulding, and is mainly applied in the products or the functional structure layers, such as outer sheath layers of electric cables and electric wires, floors, wall plates, ceilings, fire resisting shutters and the like. The composite material has the advantages of excellent water resistance, fire protection, heat insulation, smoke prevention, ageing resistance, corrosion resistance and the like.

The invention provides a chemical wastewater high-efficiency green treating agent and a preparation method thereof, and relates to the technical field of chemical wastewater treatment. The chemical wastewater high-efficiency green treating agent is prepared from the following raw materials: sepiolite, nano-powder, bamboo fibres, proteolytic enzyme, boric acid, a deodorant, activated carbon, medicine residues, calcium bisulfite, a coupling reagent, calcium hypochlorite and deionized water. The chemical wastewater high-efficiency green treating agent disclosed by the invention is wide in pollutant treatment range, good in effect, wide in production raw material source, environment-friendly and non-toxic, good in effluent quality, can effectively remove polluted matters, such as COD (ChemicalOxygen Demand), heavy metal, sulphur-containing substance and particulate matters, from chemical wastewater, and moreover, can effectively remove offensive odour from the wastewater; the wastewater treatment efficiency is high; the treatment range is wide.

The invention discloses a steel part with a corrosion-resistant impregnating layer. 304 stainless steel serves as a base material. The surface of the base material is coated with a corrosion-resistantlayer. The thickness of the corrosion-resistant layer is 50-80 microns. The corrosion-resistant layer comprises, by weight, 20-30% of NiAl and 70-80% of Ni3Al. The quality of the corrosion-resistantimpregnating layer is good. AlN is adopted as a source electrode material can generate N2 during the reaction to play a role of shielding gas and prevent other oxidizing reactions. It is guaranteed that the surface layer of steel has higher cleanliness. The surface of the steel part mainly comprises NiAl and Ni3Al. The bonding force between the impregnating layer and a base body is increased. A complete and compact corrosion-resistant AlO surface layer can be formed on the surface of the stainless steel over time. Accordingly, the steel part can effectively resist corrosion.

The embodiment of the invention provides a flexible bend-resisting sucker rod and a manufacturing method for the sucker rod and belongs to the technical field of oil exploitation equipment. The flexible bend-resisting sucker rod comprises an elastic macromolecular protective jacket and a steel wire rope, wherein the macromolecular protective jacket is made from an elastic and anti-corrosion material; the steel wire rope is formed by winding multiple strands of steel wires; the elastic macromolecular protective jacket is embedded into and sleeved on the steel wire rope in the manner of injection molding. The steel wire rope is formed by winding multiple strands of steel wires and the elastic macromolecular protective jacket is embedded into and sleeved on the steel wire rope in the manner of injection molding, so that the service life of the flexible bend-resisting sucker rod is greatly prolonged and the applicability in practical use is greatly promoted.

The invention relates to a traditional-Chinese-medicine composition for treating the psoriasis by oral administration and external applying and belongs to the traditional-Chinese-medicine composition for treating the psoriasis. A medicine for oral administration comprises the following components in parts by weight: 50-60 parts of radix rehmanniae, 50-60 parts of bighead atractylodes rhizome, 50-60 parts of honeysuckle, 50-60 parts of duckweed, 40-50 parts of salvia miltiorrhiza, 40-50 parts of cortex moutan, 40-50 parts of angelica sinensis, 40-50 parts of cortex dictamni, 40-50 parts of belvedere fruit, 40-50 parts of fructus forsythiae, 40-50 parts of burdock, 30-40 parts of radices lithospermi, 30-40 parts of cortex kadsurae radicis, 30-40 parts of radix paeoniae rubra, 30-40 parts of scutellaria baicalensis, 30-40 parts of golden cypress and 30-40 parts of poria cocos; a traditional Chinese medicine for external applying comprises the following components in parts by weight: 20-30 parts of hydnocarpus hainanensis, 20-30 parts of radix stemonae, 15-20 parts of golden cypress, 15-20 parts of radix sophorae flavescentis, 10-15 parts of realgar, 3-5 parts of chalcanthite, 3-5 parts of venenum bufonis and 1-3 parts of musk. The traditional-Chinese-medicine composition adopts oral administration and external applying, can treat both symptoms and root causes; the pills of the traditional-Chinese-medicine composition for oral administration have the effects of clearing heat and removing toxicity, cooling blood and dispelling wind, activating blood and dissolving stasis and promoting dampness; simultaneously, by combination with the traditional-Chinese-medicine composition preparation for external applying, the effects of dispelling wind, eliminating dampness, removing toxicity, eliminating inflammation, alleviating pain and itching can be achieved, the psoriasis can be removed, the health of the skin is restored and the relapse is not easy to occur.

The invention provides a corrosion-resistant metal plate which comprises a carbon steel plate body, a corrosion-resistant ally layer and a corrosion-resistant coating in sequence from inside to inside, wherein a sealed space is formed between the carbon steel plate body and the corrosion-resistant ally layer. The metal plate is applicable to pavement of oil-gas pipelines and is good in corrosion resistance, excellent in mechanical property and simple in preparation process.

The present invention discloses one kind of waterproof bridge floor material and its construction process. The waterproof bridge floor material consists of cement 55-85 weight portions, No. 1 road hole material 10-25 weight portions, No. 707 glue 5-25 weight portions, cellulose or short fiber 0.5-1.5 weight portions and aluminum silicate 1-2.5 weight portions. The present invention is used for waterproofing of cement concrete on bridge floor, and can form hydrophobic interpenetrating polymer network on the surface of cement concrete to block water and increase the service life of bridge floor. It is applied through simple smearing.

The invention relates to the technical field of polymer plugging materials, and discloses a macromolecular fireproof and moistureproof plugging material, which comprises a first plugging layer and a second plugging layer; the exterior of the first plugging layer is fixedly connected with a first inner bonding layer, and the other side, far away from the first bonding layer, of the first plugging layer is fixedly connected with a first outer sealing strip; a first waterproof layer is fixedly connected to the inner side of the first outer sealing strip, a first inflaming retarding anti-corrosionlayer is fixedly connected to the outer portion of the first waterproof layer, a first outer bonding layer is fixedly connected to the outer portion of the first inflaming retarding anti-corrosion layer, and a second inner bonding layer is fixedly connected to the outer portion of the second blocking layer. The macromolecular fireproof and moistureproof plugging material is simple in overall structure and convenient for effective flame retardance, corrosion resistance and external protection under the condition of good plugging performance, so that the problem that the plugging performance ofthe macromolecular plugging material is difficult to guarantee when the macromolecular plugging material is used for a long time in an environment with large temperature difference or severe environment is effectively solved.

The invention provides a composite metal tube. The metal tube sequentially comprises a carbon steel tube body, a corrosion-resisting alloy layer and an anti-corrosion coating from the interior of the axis of a tube body to the outside. Closed space is formed between the carbon steel tube body and the corrosion-resisting alloy layer. The metal tube is suitable for oil-gas tube laying and has good corrosion-resisting performance and excellent mechanical performance, and the preparation process is simple.

The invention discloses a water, moisture and corrosion preventing electric control box, which comprises a box body, a box door covered at the front of the box body, a radiator arranged at the back of the box body, and an electric control component installed in the box body, and is characterized in that the bottom part of the box body is provided with a wire inlet and a wire outlet, the wire inlet and the wire outlet are internally provided with a waterproof joint; the outer periphery of the front end of the box body is provided with a water release slot in a concave mode, and the bottom part of the box door is provided with water release holes corresponding to the water release slot; a waterproof sealing strip is installed between the front end of the box body and the box door; the radiator is fixed at the back of the box body, the periphery of an installation surface of the radiator is provided with a plurality of grooves, the grooves are internally provided with waterproof slow drying flexible glue, and a joint surface of the radiator and the back of the box body is sealed by the waterproof slow drying flexible glue. Because of the multiple waterproof measures, water does not get into the box body even in a raining environment outdoor, thereby effectively preventing water, moisture and corrosion, and being particularly applicable to field operation environments such as offshore platforms, mines, pits and the like.

The invention provides a water recovery pipe column and a water recovery method for a water source well cable-laying nonmetal coiled tubing. The pipe column comprises a standard wellhead, a ground control system arranged outside the standard wellhead, the cable-laying nonmetal coiled tubing mounted at the lower end of the standard wellhead, a liquid level monitoring device, an electric submersiblepump and a motor, wherein the cable-laying nonmetal coiled tubing is connected with the standard wellhead through a tubing nipple; the ground control system is electrically connected with the upper end of the cable-laying nonmetal coiled tubing; the liquid level monitoring device, the electric submersible pump and the motor are sequentially connected to the lower end of the cable-laying nonmetalcoiled tubing; and the liquid level monitoring device, the electric submersible pump and the motor are electrically connected with the ground control system. The water recovery pipe column has the advantages of being capable of effectively resisting corrosion and abrasion, few in joint, small in friction resistance, high in construction speed and long in service life by adopting the cable-laying nonmetal coiled tubing, friction between a cable and a well wall can be avoided, the problem of cable abrasion is fundamentally solved, the accident rate of a water source well is reduced, and the service life of the submersible pump is prolonged.

The invention discloses a sulfur-containing natural gas sampling system which comprises a neutralizing tank, a neutralizing solution is contained in the neutralizing tank, a neutralizing gas inlet pipeline extends into the neutralizing solution, and the end, extending into the neutralizing solution, of the neutralizing gas inlet pipeline is connected with a gas distributor capable of dispersing sulfur-containing natural gas into a plurality of small bubbles. Aiming at the particularity of sulfur-containing natural gas sampling, the gas distributor capable of dispersing sulfur-containing natural gas into a plurality of small bubbles is connected to the end part of the neutralizing solution extending into the neutralizing box from the neutralizing gas inlet pipeline so that the sulfur-containing natural gas discharged in the sampling process is in full contact reaction with the neutralizing solution in the neutralizing box; the desulfurization effect is good, the sulfur content of natural gas discharged into the atmosphere is low or even zero, and the system is environmentally friendly and beneficial to ensuring that sampling operation is safely and smoothly carried out.

The invention discloses an embedded bolt for a slab type ballastless track turnout of a high-speed railway, and relates to an embedded part. The embedded bolt comprises a bent steel bolt, a sleeve and a protective cover, wherein one end of the sleeve is connected with the protective cover, and the other end of the sleeve is connected with the bent steel bolt through a connecting plate; supporting plates are symmetrically arranged on side surface of the sleeve; and screw holes are formed in the supporting plates. The embedded bolt is higher in accuracy, the fixation strength is increased relatively, and the embedded bolt is not prone to corrosion.

The invention discloses a water-based sealing protective agent and a preparation method thereof, belonging to the technical field of auxiliaries. The water-based sealing protective agent comprises thefollowing raw materials in parts by weight: 3 to 5 parts of citric acid, 3 to 5 parts of butylated hydroxyanisole, 1 to 3 parts of bi-component waterborne polyurethane resin, 1 to 3 parts of waterborne epoxy resin, 1 to 2 parts of a coupling agent, 5 to 7 parts of polyquaternium and 50 to 100 parts of water. The preparation method of the water-based sealing protective agent is simple in process and easy to operate, has remarkable effect, can tolerate neutral salt mist for 275 hours, and is non-toxic, harmless, non-irritant to human bodies and free of damage to base materials.

To provide an electric wire with a terminal and a wire harness which can easily ensure high anticorrosion performance even if the thickness of the resin material constituting the resin covering part which covers the electrical connection part between the terminal part and the electric wire conductor is reduced. cover. It is assumed that the terminal part (1) is as follows: the terminal part (5) and the electric wire (2) covered with the outer periphery of the conductor with the insulating coating layer (4) are electrically connected at the electrical connection part, and the terminal part (5) is made of a resin material and has an electrical connection. The resin covering part (7) covered by the connection part, wherein the resin covering part (7) has a first covering layer (8) and a second covering layer (9), and the first covering layer (8) and The surface of the terminal part (5) is arranged in contact with the area covering at least a part of the terminal part (5), the second covering layer (9) covers at least part of the first covering layer (8), and the first The cladding layer (8) has a recess covered by the second cladding layer (9).

The invention discloses a steel piece surface treatment method which comprises the following steps of cutting out a steel sample in a size of 10*10*5mm as a substrate, and selecting massive pure aluminum as a source material; and after performing multi-pass sanding and mechanism polishing on the steel sample and sequentially cleaning and drying the steel sample, performing alumetizing treatment with a double glow plasma surface alloying vacuum furnace, using a stainless steel cylinder as an auxiliary cathode, placing the substrate and the massive pure aluminum in the auxiliary cathode, starting surface treatment, and cooling the treated sample to a room temperature with the furnace. The steel piece surface treatment method is simple to operate, is environmentally friendly without pollutionin the implementation process and is liable in control of technology and good in alloying layer quality with the surface main components being NiAl and Ni3Al, so that the binding force between an alloying layer and a matrix is improved. By adopting the steel piece surface treatment method, a more intact and dense aluminum surface layer is formed on the surface of stainless steel, so that corrosion can be effectively resisted; and after the surface is formed with an oxide film, oxygen atoms can be effectively from further permeating into the surface, and the whole surface performance is stable.

The invention discloses a stable corrosion-resistant stainless steel part which comprises a substrate, wherein the substrate is made of stainless steel; the surface of the substrate is covered by a corrosion resistant layer; the thickness of the corrosion resistant layer is 28-30 [mu]m; the corrosion resistant layer comprises components of NiAl and Ni3Al; the ratio of NiAl to Ni3Al is (1-5):(1-7).The stable corrosion-resistant stainless steel part is good in quality, the surface of the stable corrosion-resistant stainless steel part comprises the main components of NiAl and Ni3Al, and the binding force of a seepage layer and the substrate is improved; along with time, a relatively complete and dense corrosion-resistant aluminum oxide surface layer is formed on a stainless steel surface, and thus corrosion can be effectively prevented. After an oxide film is formed on the surface, further seepage of oxygen atoms can be effectively prevented, and overall surface property stability is achieved.

The invention discloses a nutrient solution temperature control system based on thermoelectric refrigeration technology and a method. The system comprises a main control model, a temperature detection module, a water pump module and a sensing module, wherein the temperature detection module detects temperature values of the indoor, a cultivation trough and a nutrient solution box; a sensing module is used for sensing water flow passing between a semiconductor temperature control device and the cultivation trough; and according to the temperature values and the sensing value, the main control module controls the water pump module and a solenoid valve to execute a related command. Corrosion prevention can be effectively realized, the environment is not polluted and the use is convenient; purposes of temperature reduction and heating can be realized and temperature control systems of different specifications can be designed according to different requirements; and energy can be saved, and nutrient solution temperature control can be realized high efficiently.

The invention relates to a trolley absolute value encoder transmission fixing device with a protective cover for an automatic rubber tired container gantry crane. The trolley absolute value encoder transmission fixing device with the protective cover is characterized in that the additional trolley absolute value encoder transmission fixing device comprises a transmission gear, a driven wheel, an absolute value encoder and a transmission supporting mechanism, wherein the transmission gear is fixedly connected to a shaft coupling; the driven wheel is arranged in parallel with the transmission gear and is in meshed connection with the transmission gear; the transmission supporting mechanism is connected between the driven wheel and the absolute value encoder and comprises a driven wheel shaftparallel to a trolley driving shaft, a driven wheel connecting flange, a double-flange bearing frame, a right-angle supporting plate, an encoder shaft coupling and an encoder connecting flange; one end of the driven wheel shaft is connected to the driven wheel; the other end of the driven wheel shaft is connected to the absolute value encoder through the encoder shaft coupling; and the trolley absolute value encoder transmission fixing device is provided with the detachable protective cover. The trolley absolute value encoder transmission fixing device with the protective cover has the advantages of accurately transmitting the change of the position of a trolley, enabling the trolley to be accurately positioned, being corrosion-proof and water-proof and safely operating.

The invention relates to the field of articles for daily use, in particular to an instant liquid heater which comprises a heating device 3 with the two ends separately provided with a temperature adjustment pipe water inlet 321 and a water outlet 312, a temperature adjustment device 4, and a water pump 5 connected with the temperature adjustment pipe water inlet 321. The instant liquid heater is characterized in that the heating device 3 is a temperature-adjustable water circulation system, the lower portion of a temperature adjustment pipe 32 is the temperature adjustment pipe water inlet 321, a water overflow outlet 322 is formed in the upper portion of the temperature adjustment pipe 32, the temperature adjustment pipe 32 and a circulation pipe 33 are connected through the water overflow outlet 322, a heating pipe 31 and the temperature adjustment pipe 32 are connected through a heating pipe water inlet 311 in the lower portion of the temperature adjustment pipe 32, and a backflow inlet 331 in the lower portion the circulation pipe 33 is connected with the temperature adjustment pipe water inlet 321. According to the instant liquid heater, the temperature is controlled through a pure physical and mechanical structure, the production cost is lowered, and the service life of equipment is prolonged; and the temperature-adjustable water circulation system prevents counter-flushing of hot water and cold water from affecting the water quality and the equipment, can achieve temperature control without delay, and is large in temperature adjustment interval.