56results about How to "Guaranteed temperature environment" patented technology

The invention relates to a novel normal-pressure room-temperature plasma induced mutation breeding device. The novel normal-pressure room-temperature plasma induced mutation breeding device comprises a sample processing system, a cooling system, a control system and a detection system; the sample processing system comprises a clean working chamber without bioactive contaminants; a step motor and an object stage are arranged in the clean working chamber; the object stage is arranged on the step motor; at least one sterilizing device mounting position is reserved in the inner cavity or on the wall of the clean working chamber; the detection system comprises a gas flow controller, a temperature sensor and a position sensor; and the control system comprises an operating panel and a controller, and the controller is used for controlling the step motor to realize rising and falling or horizontal rotation of the object stage so as to automatically process a plurality of samples. The novel normal-pressure room-temperature plasma induced mutation breeding device is capable of realizing the functions of continuous automatic processing, automatic sterilization, automatic monitoring and control on the samples, and also capable of completing the plasma induced mutation breeding in the normal pressure and room temperature environment at higher efficiency.

The invention discloses a hydro-thermo-mechanical coupled subgrade dynamic response testing device and a method thereof. The device comprises a subgrade body, a water supply system, a loading system,a temperature control system and a data acquisition and processing system. The method comprises the following steps: connection of a data acquisition unit; consolidation and stabilization of the subgrade body; the vacuum insulation process; setting of water supply conditions and operating temperature of a bottom thermostat; the freezing process of the subgrade body; the melting process of the subgrade body; and hydro-thermo-mechanical coupled subgrade dynamic response testing and data acquisition and processing. According to the testing device and the method provided by the invention, by the utilization of a loading frame, a pressure chamber, a constant temperature system, the water supply system and the data processing system and by combining the dynamic loading technology with differentaxial frequencies, the large-scale subgrade loading technology of applying dynamic loads with different frequencies in the axial direction of the subgrade and adding confining pressure transversely isrealized, the experimental results provide accurate physical parameters for the establishment of a realistic hydro-thermo-mechanical coupled subgrade dynamic response model, and the subgrade materialcan be optimized.

The invention provides a method for reproducing baby rabbits in burrows. The burrow is provided with an entrance, an exit, a reproduction cavity and cover and a born rabbit tray, which is fabricated in situ or prefabricated, and is placed underground, semi-underground or on the ground at one side of a cage. The female rabbits give birth in the reproduction cavity and the baby rabbits grow and develop in the reproduction cavity. The burrows adopted in the method can simulate the ecological environment of the natural caves so as to be warm in winter and cool in summer and have appropriate humidity, are convenient for repetitive fabricating and factory production, are convenient for cleaning, washing and sterilizing, overcome artificial interference, can improve growth and development as well as growth velocity and health level of the baby rabbits and reduce occurrence of diseases. The female rabbits can give birth for multiple times in the burrows in a year, thus increasing the reproductive output. The method of the invention is suitable for rabbit breeding and reproduction.

The invention discloses a constant-temperature motherwort powdering processing device which comprises a base. A powdering tank is connected to the top part of the base through a bolt; a cover plate isconnected to the top end of the powdering tank through a bolt; a feed hopper is connected to the top end of the cover plate through a bolt; an upper grinding ring is connected to the top end of the inner part of the powdering tank through a bolt; a feed chute port is formed in the top end of the upper grinding ring; a grinding chamber with a tapered structure is arranged at the bottom end of theupper grinding ring; a grinding pattern groove is formed in the inner wall of the grinding chamber; and a water bath chamber is formed among the upper grinding ring, the powdering tank and the cover plate. According to the constant-temperature motherwort powdering processing device provided by the invention, in the powdering process, heat-preservation hot water is fed into the inner part of the water bath chamber through a water bath pipe, so that a constant-temperature constant-humidity environment in the grinding chamber is kept. According to the constant-temperature motherwort powdering processing device provided by the invention, the temperature environment of the inner part of the grinding chamber is kept by directly utilizing a water bath manner, so that the temperature variation existed in the grinding and powdering process is avoided, and the motherwort processing quality is improved.

The invention relates to a thermal grain-sized dicing technology for phenolic moulding plastic. The technology includes the following steps that firstly, a raw material is pretreated; secondly, a ball grinding mill is used, ceramic balls are added into the ball grinding mill, and pretreated phenolic resin, a catalyst and a release agent are put into the ball grinding mill to be subjected to ball grinding for 10 h to 24 h; thirdly, burdening and mixing are conducted; fourthly, extruding is conducted; fifthly, rolling is conducted; sixthly, conveying and slitting are conducted; and seventhly, screening and packaging are conducted. The technology has the beneficial effects of being reasonable, high in production efficiency and stable in product quality.

The invention provides a processing device for a fabric production process, belongs to the technical field of weaving and aims at solving the problems of nonuniform fabric dyeing and the like in the prior art. The processing device for the fabric production process comprises a base, wherein a low-temperature processing mechanism and a drying device are arranged on the base; the low-temperature processing mechanism comprises a rack; a left rotating shaft and a right rotating shaft are arranged on the rack; a low-temperature box is also fixed on the rack; a cold air inlet hole is formed in the upper part of the low-temperature box; a cold air inlet pipe is arranged in the cold air inlet hole; the other end of the cold air inlet pipe is communicated with a refrigerator; the drying device is arranged at the side part of the low-temperature processing mechanism; the drying device comprises a bracket; a drying oven is arranged on the bracket; a winding mechanism is also arranged on the bracket; and the winding mechanism comprises a winding roller and a winding motor. The processing device has the advantage that the fabric dyeing uniformity can be ensured.

The invention discloses a gas engine lubricating oil composition and a preparation method thereof, the gas engine lubricating oil composition is prepared from mineral base oil, an anti-oxidation and anti-corrosion additive, a pour point depressant, a rust and corrosion resistant agent, an ashless friction modifier, an anti-wear agent, an extreme pressure agent, an anti-foaming agent, an antioxidant, a clearing dispersing agent and a demulsifier as raw materials by strictly controlling the proportion of each component, a traditional lubricating oil formula is changed, the pour point depressantis a chemically-synthesized polymer or condensate, the molecule of the pour point depressant generally contains a polar group (or an aromatic nucleus) and an alkyl chain similar to a paraffinic hydrocarbon in structure, the pour point depressant is a common chemical compound, is simple in preparation process and low in production cost, the anti-wear agent is added to facilitate formation of a filmon a friction surface under light load and medium load conditions from the gas engine lubricating oil composition to prevent wear and tear, the antioxidant is added to inhibit formation of a high temperature sediment and reduce generation of carbon deposit in a cylinder so as to avoiding plugging of a spark plug, and the gas engine lubricating oil composition can be used in lubrication of gas engines.

The invention relates to a cement setting time tester. The cement setting time tester comprises a bottom shell, a top shell, a support, two testing bins and a machine head. The support is arranged between the bottom shell and the top shell. The top of the support is fixedly connected with the top shell. The bottom of the support is movably connected with the bottom shell. The two testing bins are fixedly arranged at the portions, at the two sides of the support, of the bottom shell respectively. The machine head is arranged at the bottom of the top shell. The accuracy of the test result can be effectively improved, the workload of experimenters can be effectively reduced, and the working efficiency is improved.

The invention discloses a composting device and a composting method for organic garbage, and relates to the technical field of organic garbage treatment. The composting device comprises an outer shell, a heat exchange assembly, an air inlet pipe, an air outlet pipe and a leachate collecting assembly.The upper end of the outer shell is provided with an opening, the opening is connected with a covering film, the covering film can open or close the opening, and the outer shell is used for containing the organic garbage; the heat exchange assembly is used for heating the interior of the outer shell, the air inlet pipe and the air outlet pipe can communicate with an inner cavity of the outer shell and the outside, the end, away from the outer shell, of the air inlet pipe is used for communicating with the induced draft fan, the air inlet pipe is used for introducing oxygen into the outer shell, and the air outlet pipe is used for guiding out waste gas generated in the outer shell; and one end of the leachate collecting assembly is located in the outer shell, the other end of the leachate collecting assembly extends out of the outer shell, and the leachate collecting assembly is used for guiding percolate generated by composting to the outside. According to the composting device and the composting method for the organic garbage, oxygen can be supplied to a pile body while the temperature of the pile body is ensured.

The invention discloses a biological preparation containing liver stem cells. The biological preparation contains the following raw materials in parts by weight: 5ml-7ml of the liver stem cells, 2ml-4ml of peripheral blood stem cells, 3ml-5ml of albumin, 2g-4g of glucose, 2ml-3ml of 50% ethanol, 1g-1.2g of vitamin A and 100ml-120ml of a solvent. The solvent is a 0.9% sodium chloride; stem cells are primitive cells for forming each tissues and organs of mammals, cell nucleuses are mostly euchromatins and have relatively high telomerase activity, the stem cells can be divided into embryonic stemcells and adult stem cells, and the liver stem cells, the peripheral blood stem cells and the albumin are combined to be prepared into a stem cell biological preparation, so that the tissue regeneration of injured parts of livers can be effectively promoted, and a relatively good liver injury treatment effect can be achieved; and a preparation process is simple, and a water-bath heating manner isadopted, so that the water temperature can be controlled, the temperature environment of the preparation is guaranteed, the biological preparation has relatively stable performance, and the activityof the stem cells is guaranteed.

The invention discloses an energy-saving production device for emulsified asphalt. The energy-saving production device comprises a base; two symmetrical support plates are arranged on the upper side of the base, and an emulsification box is arranged between the support plates; an annular fixing boss is arranged on one outer side of the emulsification box; a second servo motor is arranged in the lower middle position of the emulsification box; an output shaft of the second servo motor is connected with one end of a main shaft through a coupler, and the other end of the main shaft extends into the emulsification box and is connected with a shaft connecting plate through a bearing. The energy-saving production device has the advantages that asphalt and emulsions can be rapidly and uniformly mixed through interaction between a first spiral stirring rib and a second spiral stirring rib; the annular fixing boss is internally provided with an annular water-bath tube which can guarantee the temperature environment during mixing; the mixed emulsified asphalt can be quickly and conveniently taken out through interaction between a first servo motor and an arc-shaped support plate.

The invention discloses preservation liquid. The preservation liquid comprises, by weight, the following components of 3-5 parts of astragalus polysaccharide, 3-5 parts of polyving akohol, 2-5 parts of aluminum sulfate, 0.001-0.002 part of glutaraldehyde, 0.2-0.5 part of zinc sulfate, 0.5-0.8 part of saccharose and 20-40 parts of water. When the preservation liquid is used, a mixture of the components is sprayed to the preservative bottom of a cellar or the pit bottom of a soil pit, celery is stood in bunches after spraying is completed, the cellar or the soil pit is sealed, and preservation is performed. The preservation liquid is simple in proportion, convenient to use and good in preservation effect, and the preservation time can be prolonged to 40-60 days.

The invention provides a human mechanics intervention instrument. The human mechanics intervention instrument comprises a support fixing structure, a mechanical driving mechanism, a mechanics acting end and an operation and control system. The human mechanics intervention instrument has the advantages that an abdominal mechanics intervention process is accurately controlled; the human mechanics intervention instrument is suitable for multiple parts of the back part, lower limbs and the like of a human body, and the different parts of the human body can be intervened according to straight line, circumference and helix tracks; the interference speed, pressure and action range of the instrument can be freely adjusted, the mechanics acting end maintains proper temperature through a heating sheet, and the proper warm and heat irritation is applied to an acted part; the temperature and pressure of the acted part are monitored and displayed in real time through a temperature sensor and a pressure sensor; a suitable temperature environment is formed and maintained by an auxiliary heating module generating larger warm and heat irritation to the acted part; the whole instrument can be flexibly moved and fixed according to working requirements, and the convenience in use is realized.

The invention provides a brake and a rotating device with the brake, and belongs to the technical field of brakes. The brake comprises a brake stator, a brake plate and a brake rotor, wherein the brake plate and the brake rotor are opposite and are arranged at an interval; the brake plate can be arranged on the brake stator in a sliding mode in the direction close to or away from the brake rotor in the axial direction; after the brake plate slides towards the direction close to the brake rotor, the brake plate is connected with the brake rotor in a clamping manner; and after the brake plate slides in the direction away from the brake rotor, the brake plate and the brake rotor are not clamped. According to the brake provided by the invention, the brake rotor is braked in the mode that the brake plate is connected with the brake rotor in a clamped mode, so that compared with friction braking and clamping braking, too much powder cannot be generated, and the internal environment of a module is ensured to be clean.

The invention relates to a phenolic moulding plastic hot dicing process. The phenolic moulding plastic hot dicing process comprises the following process steps: 1) raw materials are pretreated; 2) a ball mill is used; ceramic balls are added in the ball mill; and pretreated phenolic resins, catalysts and demolding agents are put in the ball mill for ball milling by 10-24 hours; 3) the ingredients are mixed; 4) the extrusion is performed; 5) the rolling is performed; 6) cut strips are conveyed; and 7) the screening and the packing are performed. The phenolic moulding plastic hot dicing process has the advantages of reasonable process, high production efficiency and stable product quality.

The invention discloses a production process of a wear-resistant and corrosion-resistant WPC floor. The production process has the advantages that waste cartons, sawdust, rice husks, bagasse, wheat straw, corn straw, bagasse, pine bark, modified urea resin, a defoaming agent and a flame retardant are used as the raw materials, the proportion of the components is controlled strictly, a traditionalWPC floor formula is changed, the waste cartons, sawdust, rice husks, bagasse, wheat straw, corn straw, bagasse and pine bark are wide in source and cheap, and accordingly raw material cost is saved;a layer of wear-resisting agent formed by aluminum oxide is evenly pressed to surface layer of a large floor block, so that good corrosion resistance and long service life are achieved; water temperature can be easily controlled by a water-bath heating manner, and the required temperature environment of production is guaranteed; materials are subjected to ultraviolet sterilizing before being packaged by a packaging machine, and the mixture which is not sieved is allowed to pass a sieve in a repeated forceful grinding manner to avoid material waste; the production process is simple and suitablefor being popularized and used.

The invention discloses a protection method of a red clay undisturbed sample. The protection method comprises the following steps: coating the adopted red clay undisturbed sample by using flow plastic red clay mud; putting the undisturbed sample coated with the mud in sampling barrels, and sealing by using an adhesive tape; burying the sealed sampling barrels into a pit at a shade place, and watering the surface; manufacturing a soil sample box capable of ventilating, and putting an anti-vibration plate at the bottom of the soil sample box; taking out the sampling barrels in the pit and putting the sampling barrels in the soil sample box, and preserving gaps between the sampling barrels; filling the gaps with soaked crops densely, covering with a box top plate, and bundling firmly; and transporting to a laboratory. The red clay undisturbed sample is stored and transported by using the protection method disclosed by the invention, so that the red clay undisturbed sample is long in storage life, simple and convenient in operation, low in cost, good in anti-vibration effect and easy to transport, and the effective protection time is up to 20 days ormore than 20 days.

The invention relates to the technical field of medical instruments, in particular to a cryopexor for treating a preauricular fistula. The cryopexor comprises a liquid nitrogen bottle, a low-temperature compensation bottle, a cryopexor head, a controller and a micro vacuum pump II; the liquid nitrogen bottle is connected with the low-temperature compensation bottle, a hose is connected to an inputport of a micro vacuum pump I, the cryopexor head is connected with an output port of the micro vacuum pump I, the micro vacuum pump II is arranged on a pipe I, a refrigerative electric pile is arranged in the low-temperature compensation bottle, and the controller is electrically connected with the micro vacuum pump I and the micro vacuum pump II. By means of the cryopexor, the temperature riseof liquid nitrogen can be reduced to the greatest degree, the original temperature environment of the liquid nitrogen is kept, and therefore the liquid nitrogen can achieve the optimal cryotherapy effect; the stability of the liquid nitrogen is ensured; through a transparent cover, the liquid nitrogen sprayed by the cryopexor head can be prevented from escaping out of the transparent cover and canstay in the transparent cover for a long time, and therefore better cryotherapy is conducted on the preauricular fistula and surrounding chronic infection foci of a patient.

The invention relates to the technical field of medical apparatuses, in particular to a cryopexor for treating a pre-auricular fistula. The cryopexor comprises a liquid nitrogen bottle, a low-temperature compensation bottle, a PTC heater and a controller, wherein the liquid nitrogen bottle is connected with the low-temperature compensation bottle, a hose is connected to an input port of a miniature vacuum pump, a cryopexor head is connected to an output port of the miniature vacuum pump, and the PTC heater is arranged in a transparent hood; the transparent hood is further internally provided with a temperature sensor, a refrigeration electric pile is arranged in the low-temperature compensation bottle, and the controller is in controlled connection with the miniature vacuum pump, the PTC heater and the temperature sensor. By means of the cryopexor, the temperature rise of liquid nitrogen can be lowered to the greatest extent, and the original temperature environment of the liquid nitrogen is maintained so that the liquid nitrogen can achieve the best cryotherapy effect; the stability of the liquid nitrogen is guaranteed; through the arrangement of the transparent hood, the situation that the liquid nitrogen sprayed out of the cryopexor head escapes out of the transparent hood can be avoided so that the liquid nitrogen can be in the transparent hood for a long time, and thus thepre-auricular fistula and a surrounding chronic infection focus of a patient are subjected to better cryotherapy.

The invention discloses a livestock breeding excrement recycling treatment device, and belongs to the field of animal husbandry; the device comprises a treatment box; a pre-storage tank is arranged inthe treatment box; a feeding pipe is arranged at the top end of the pre-storage tank; a rotating roller is arranged in the pre-storage tank; hook rakes are uniformly arranged on the outer wall of therotating roller; two groups of crushing rollers are arranged in the pre-storage tank; crushing teeth are uniformly arranged on the outer walls of the crushing rollers; the two groups of crushing rollers are meshed with each other through the crushing teeth; a stirring motor is mounted on the treatment box; an output shaft of the stirring motor is connected with a rotating shaft; stirring blades are mounted on the rotating shaft and arranged in the treatment box; a water tank is arranged on the treatment box; a water conveying pipe is arranged on the water tank; a spraying disc is arranged atthe outlet end of the water conveying pipe; an exhaust pipe is arranged at the top of the treatment box, an inclined guide plate is arranged at the bottom of the treatment box, and a discharging pipeis arranged at the lowest end of the inclined guide plate. The livestock breeding excrement recycling treatment device improves the livestock breeding excrement treatment effect and efficiency, guarantees the livestock breeding excrement treatment safety, facilitates the livestock breeding excrement treatment effect and efficiency, and is convenient to use.

The invention relates to an improved reaction kettle, which comprises a reaction kettle shell, a feed port and a discharge port. The lower end of the kettle shell, the bottom of the reactor shell and the upper end of the discharge port are provided with stirring rollers. The inner wall of the reactor body is staggered with reaction plates. The reaction plates on each side extend to the outside of the reactor body through the rotating shaft and are connected to the motor. The upper end is provided with a liquid pipe. The advantages of the present invention are: the use of the reaction plate can make the materials adhere to the reaction plate, so that the contact and reaction between the materials are sufficient, and the motor is used to drive the rotating shaft, so that the reaction plate is rotated downward to make the materials after the reaction fall. The outlet can be stirred by the stirring roller, so that the unreacted materials can be contacted again, further ensuring the full reaction between the materials.

The invention relates to a hybrid energy cabinet air conditioning system which comprises a waterproof air conditioner, an equipment bay and a battery tank, wherein the equipment bay and the battery tank are arranged side by side left and right; and the waterproof air conditioner is positioned at one side of the battery tank, which is far away from the equipment bay. The invention provides the cabinet air conditioning system which ensures the dust degree to be reduced, has balance power supply, good outdoor adaptability and suitable volume.

The invention relates to a hot bending machine. The hot bending machine comprises a frame, a forming furnace, a hot bending structure and a driving mechanism, wherein the forming furnace is mounted onthe frame; the hot bending structure is arranged in the forming furnace; the hot bending structure comprises a male die and a flexible part configured to be in a tensioned state; the male die is provided with a forming cambered surface; the driving mechanism is used for driving at least one of the flexible part and the male die to move relative to the other, so the flexible part and the male diecan extrude glass, the glass can be bent to be attached to the forming cambered surface, and a cavity is formed in the male die. The hot bending structure is simple in structure, the forming furnace has heat preservation and sealing functions, a desired hot bending temperature and a desired clean environment in the furnace can be guaranteed, and cost reduction, energy consumption reduction, hot bending efficiency improvement and product yield improvement are facilitated.

The invention discloses oxidation and absorption particles for treatment of rust-removing pickling waste liquid, and a production method of the oxidation and absorption particles. Aluminium polychlorid, limestone, iron-free aluminum sulfate powder, iron sulfate, sodium hypochlorite, bentonite, activated carbon and distilled water are used as raw materials, the proportion of all the components is strictly controlled, and the traditional way of separately using an oxidant and an adsorbent is changed; the prepared particles have the functions of oxidation and absorption at the same time, so thatthe treatment cost is greatly reduced; the bentonite is wide in source; the finished product material is granular, and is easy to store, long in shelf life, simple in the preparation process and goodin use effect; the water temperature is easily controlled by using a water bath heating way, so that the temperature environment of preparation is guaranteed, and the performance of the finished product is more stable; a drum type mixer is used for continuously overturning so as to effectively prevent the particles with higher density from sinking into the lower layer, thus guaranteeing the mixingquality; the mixture, which does not pass through a sieve, is enabled to pass through the sieve in a way of being repeatedly ground with force, so that material waste is avoided.

The invention discloses an oxidant for municipal wastewater treatment. The oxidant comprises raw materials in parts by weight as follows: 2-4 parts of polyaluminum chloride, 4-8 parts of calcium oxide, 8-10 parts of iron-free aluminum sulfate powder, 3-5 parts of iron sulfate, 4-6 parts of ferric chloride, 50-70 parts of bentonite, 2-4 parts of activated carbon and 20-24 parts of distilled water.Proportion of the components is controlled strictly, formula of the traditional oxidant is changed, the bentonite is widely sourced, the activated carbo component is added, and the oxidant has certainadsorption and purification effects; the finished oxidant is granular, convenient to store and long in shelf life; the preparation process is simple, the oxidation effect is good, water-batch heatingis adopted, water temperature is controlled easily, temperature environment for preparation is guaranteed, performance of the oxidant is more stable, tumbling is performed by a drum type stirrer, granules with higher density are effectively prevented from settling down to the lower layer, and mixing quality is guaranteed.

The invention relates to a design method for the air supply flow of a low-temperature liquid rocket blow-off branch pipe. Comprising the following steps: determining the temperature of a propellant, geometric parameters of a cabin section and physical property parameters of materials forming the cabin section according to total input, and determining a target average temperature designed by air in the cabin section; according to the total input, determining the environment temperature and the ground average wind speed of the launching day; according to the input parameters, calculating the convective heat transfer coefficient outside the bulkhead; valuing the convective heat transfer coefficient in the bulkhead; building a cabin section thermal grid model; and establishing a heat balance equation based on the gas supply flow min for each heat grid, and performing simultaneous solution according to the input conditions of the steps to obtain the gas supply flow. The design method is rapid, simple and convenient, the design result precision is high, the branch pipe air supply flow can be rapidly calculated according to the environment condition of the launching day and equipment parameters of the rocket cabin section, input conditions are provided for ground air supply and distribution, and therefore the temperature environment of cabin section single-machine equipment is guaranteed.

The invention discloses an acid washing waste liquid treatment method for recycling and rust removal of hardware. A traditional acid washing waste liquid treatment method is changed and the waste liquid treatment effect is greatly improved through two times of dosing and deposition and two times of dosing and neutralization treatment; the proportion of each component and the reaction temperature are strictly controlled; a water bath heating manner is adopted and the water temperature is easy to control, so that a temperature environment for preparation is ensured; the components are added while stirring and the treatment efficiency is improved; after waste liquid is treated to reach standards, the waste liquid is discharged, so that a water resource is prevented from being polluted; compared with a traditional technology, the method is improved and the treatment efficiency and the treatment quality are greatly improved; sludge is heated by utilizing an air heater and a resistance heating wire so that the sludge is dried and caked and the caked sludge is collected; environment protection requirements are combined and a flocculation medicine solution and a sodium hydroxide solution are made; a preparation technology is simple and the cost is reduced.

The invention discloses a production technology of a rubber material for producing a friction plate of an automobile clutch. Natural rubber, nitrile rubber, oil-extended styrene-butadiene rubber, zincoxide, stearic acid, microcrystalline wax, an accelerator, an antiager, tackifying resin, carbon black, wollastonite, a rubber activator, sulfur, a rubber softener, a rubber plasticizer and a preservative are used as raw materials, specific weights of all the components are strictly controlled and a traditional rubber material formula is changed; the rubber activator is added in the raw materialsfor improving the performance of the formed rubber material; the preservative is dehydroacetic acid, is degraded into acetic acid in an aqueous solution and has no toxicity to a human body; by avoiding a vulcanization technology, the pollution to the environment is prevented; the preservative is the dehydroacetic acid and has no toxicity to the human body; the nitrile rubber replaces butadiene styrene rubber in an existing formula, so that high temperature resistance of the rubber material is greatly improved; by adopting a water bath heating mode, water temperature is easily controlled, theprepared temperature environment is ensured and the performance of the rubber material is more stable.

The invention discloses a flocculant for urban sewage treatment. The flocculant is prepared from the following raw materials in parts by weight: 2-3 parts of polycarbonate, 2-4 parts of aluminum sulfate, 5-9 parts of aluminum chloride, 4-8 parts of iron sulfate, 4-6 parts of ferric chloride, 8-10 parts of inorganic silicate, 2-4 parts of inorganic phosphate, 3-5 parts of activated carbon, 50-70 parts of bentonite, 3-5 parts of zinc oxide, 8-10 parts of ethanol and 20-24 parts of distilled water. The proportion of the components is strictly controlled, the formula of a traditional flocculant ischanged, the source of bentonite is wide, and the component of activated carbon is added, so that a certain adsorption and purification effect is achieved; during flocculation, flocs are larger, mud-water separation is facilitated, water after treatment is clear, and flocculation effect is good. Water temperature is easily controlled by water bath heating, the preparation temperature environmentis ensured, and performance of the flocculant is more stable.

The invention discloses an adsorbent for rust-cleaning and pickling waste liquid treatment and a preparation process of the adsorbent. Coal powder, sodium chloride, SiO2-CaCO3 crystallized ores, bentonite, nut shell, orange peel, timber, pomelo peel, resin, waste asphalt, waste tire particles, an activating reagent and distilled water are taken as raw materials; the proportions of all the components are strictly controlled, and a traditional adsorbent formula is changed; sources of the SiO2-CaCO3 crystallized ores, the bentonite, the nut shell, the orange peel, the timber, the waste asphalt and the waste tire particles are wide; a finished product adsorbent is granular, and has the advantages of good use effect, convenience in preservation, long shelf life, simple preparation process and low production cost; a water bath heating mode is adopted for easily controlling the water temperature; the temperature environment of preparation is ensured, so that the performance of the adsorbent becomes more stable.