32results about How to "Easy to preheat" patented technology

The invention discloses a valve cleaning device which comprises cleaning basins, a bottom plate and a valve holding device; a supporting rod is vertically fixed to one end of the top of the bottom plate; a control table is mounted at the other end of the top of the supporting rod; a single chip microcomputer is arranged inside the control table; a motor is mounted at the top end of a supporting plate; a locating block is fixed to the bottom end of the motor by means of a rotating shaft; a reserving groove is formed in the bottom end of the locating block; the valve holding device is fixed to the bottom end of the locating block; and an output end of the single chip microcomputer is electrically connected with input ends of an electric slide rail, the motor and an air pump through a wire. The motor is arranged, the locating block is fixed to the output end of the motor by means of the rotating shaft, the valve holding device is fixed to the bottom end of the locating block, the bottom end of the valve holding device is spirally connected with a bioprosthetic valve, and when the motor works, the valve holding device is conveniently driven to rotate, so that the bioprosthetic valve isfavorably cleaned, preserving fluid on the surface of the bioprosthetic valve is favorably cleared away, and the personnel cost is favorably reduced.

The invention discloses a blowout type spraying device. The device comprises a driving wheel (1), a driving belt (3), a pre-heating storeroom (5) and a spraying well (6), and is characterized in that the driving wheel (1) is arranged on an actuating shaft (2), the driving wheel (1) is matched with the driving belt (3), the driving belt (3) penetrates through the pre-heating storeroom (5), and the output side of the driving belt (3) is provided with the spraying well (6), and a hoisting component (11) is arranged above the driving belt (3) and the spraying well (6); the hoisting component (11) comprises a fixed tower (12), a connecting piece (10), a rope (9) and a hook (7); the connecting piece is movably mounted on the fixed tower (12), the lower end of the connecting piece (10) is provided with the rope (9), the rope (9) is connected with a pulley (8), and the hook (7) is arranged on the pulley (8). The spraying device disclosed by the invention is uniform in spraying, efficient and convenient, economical and environment-friendly.

The invention discloses an efficient heat pump system, which comprises a compressor, a four-way valve, a first condenser, a second condenser, a throttling device and an evaporator, wherein the first condenser is connected in series between the compressor and the four-way valve. The heat pump system can be switched between a low-temperature heating mode and a high-temperature heating mode. The efficient heat pump system has the advantages that the heating efficiency is high, the water temperature fluctuation range is small, the compressor and the four-way valve are effectively protected, and the like.

The invention discloses a jelly sealing machine with a heat recycling function and a jelly filling and sealing process. The jelly sealing machine comprises a fixed frame, a conveying belt, a shell placing block, a feeding groove and a sealing block. A heat conduction mechanism is fixedly arranged at the bottom end of the sealing block, heat preservation covers are symmetrically hinged to the heat conduction mechanism, the two heat preservation covers are fixedly connected through a through-flow pipe, a ventilation pipe is embedded in the top of one side of each heat preservation cover, and one end of each ventilation pipe is fixedly connected with a dustproof cover; a drying pipe is further installed at the bottom end of the ventilation pipe through a flow guide pipe and a heat conduction pipe, and an outlet of the drying pipe faces the conveying belt. Through cooperation of the heat conduction mechanism and the energy-saving mechanism, the uniform heat conduction process of the pressing plate and the pressing block and the heat recycling process, the sealing efficiency of the jelly sealing machine is effectively improved, and the jelly sealing machine is more efficient and saves more energy.

The invention discloses a welding preheating device applicable to steel structures in various shapes. The device comprises a walking track, a supporting beam, a rotary positioning beam and a plurality of flame spraying guns, wherein the supporting beam is slidingly arranged on the walking track; the rotary positioning beam is arranged at the top of the supporting beam; the flame spraying guns are fixedly arranged on the rotary positioning beam; the walking track comprises a circular track and a horizontal track arranged inside the circular tack and communicated with the circular track; and the top end of the supporting beam is connected with the rotary positioning beam through a positioning rotating shaft. According to the device, the flame spraying guns used for preheating welding positions can move on the walking track; when an arc-shaped steel structure or a circular steel structure is preheated, the flame spraying guns move on the circular track and preheat the welding positions of the arc-shaped steel structure or the circular steel structure along the track orderly; when a straight steel structure is preheated, the flame spraying guns move on the horizontal track and carry out flame preheating; and the flame spraying guns can be turned over according to actual use requirements. The welding preheating device is suitable for preheating steel-structure materials in various shapes; the application range is wide; and the use is convenient.

The invention discloses an anti-blood coagulation stirring system, and belongs to the technical field of stirrers. The anti-blood coagulation stirring system comprises a sample injection arm assembly,a stirrer is fixedly connected to the bottom of the front face of the sample injection arm assembly, a hemolysis cleaning pool is fixedly connected to the front face of the bottom of the sample injection arm assembly, and a liquid passing pipe communicates with the right end of the top of an inner cavity of the hemolysis cleaning pool. According to the invention, the sample injection arm assemblyand the stirrer are arranged, the sample injection arm assembly sucks a sample from the blood collection tube and adds the sample into the hemolysis cleaning pool, the stirrer is driven to move up and down, a user can conveniently stir blood at a constant speed, and coagulation and layering of the blood sample are prevented; and, through cooperation of the hemolysis cleaning pool, the cleaning liquid pump and the cleaning liquid bottle, a user can conveniently clean the hemolysis cleaning pool, sample carrying pollution is prevented, the sample detection accuracy is improved, and the problemsthat a traditional anti-blood coagulation stirring system cannot stir samples at a constant speed and cannot clean the samples after the samples are collected are solved.

The present invention provides a flux-filled wire capable of obtaining a weld metal having excellent low-temperature toughness, having high welding efficiency, and capable of omitting or simplifying preheating for suppressing low-temperature cracking. The filler wire contains one or more of CaF2, BaF2, SrF2, MgF2, and LiF. When the total content of these is α, the above-mentioned α is expressed in mass % with respect to the total mass of the above-mentioned flux filler wire. Calculated as 2.0 to 7.0%; the filler metal wire contains one or more of Ti oxides, Si oxides, Mg oxides, Al oxides, Zr oxides, and Ca oxides. When their total When the content is β, the above-mentioned β is 0.2 to 0.9% by mass with respect to the total mass of the above-mentioned flux-filled wire; the ratio of the above-mentioned CaF2 content to the above-mentioned α is 0.90 or more, and the ratio of the above-mentioned α to the above-mentioned β is 3.0 Above and below 15.0.

The invention discloses a cement kiln capable of realizing waste gasification outside the same and a gasification method thereof. The cement kiln capable of realizing waste gasification outside the same comprises a cement kiln, wherein a gas inlet of the cement kiln is communicated with a gas outlet of a waste gasification furnace; a feed port of the waste gasification furnace is positioned below an outlet of a waste conveying device; an inlet of the waste conveying device is positioned in a waste material shed; and a waste grabbing device is arranged in the waste material shed. An operating method of the cement kiln capable of realizing waste gasification outside the same is characterized in that heat generated by burning part of waste in the waste gasification furnace is used to heat the rest of the waste in the waste gasification furnace, so that the rest of the waste can be gasified. According to the invention, the defect that domestic waste is high in water content and contains complicated components is overcome, the pretreatment procedure can be greatly simplified, the treatment cost is greatly lowered, and the domestic waste treatment scale is expanded; and furthermore, no auxiliary fuel is needed. Besides, the waste feeding uniformity can be ensured, thereby being beneficial to uniform distribution in the waste gasification furnace.

The invention relates to the technical field of molecular distillation, and discloses an improved tray-packed rectification tower for molecular distillation, which includes a tower body, a discharge heat exchanger is arranged on one side of the bottom end of the tower body, and the bottom of the tower body There is a reboiler on the other side of the end, and a feed heat exchanger is installed outside the middle of the tower body, and the middle part of the top of the tower body is connected with a gas phase discharge pipe, and the other end of the gas phase discharge pipe is connected to a top heat exchanger. , the inside of the tower body is provided with an inner chamber, the inside of the inner chamber is surrounded by a first circulation pipe, the inside of the tower body is distributed from bottom to top with several trays, and the inside of the tower body runs through the center of the trays. central tube. The invention realizes the recovery and utilization of heat, facilitates the heat preservation of the tower body, avoids the heat loss of the tower body, and can preheat the materials, and utilizes the cooperation of the central tube and the gas ring to facilitate the formation of several steam layers in the tower body , to ensure better contact between the steam and the material, and improve the rectification efficiency of the material.

The invention discloses an air-energy water heater. The air-energy water heater comprises an evaporator, a drying tank, a heat exchange water tank and a transition water tank, wherein an isolation sealing plate is installed on the inner wall of the evaporator, and the evaporator is connected with the isolation sealing plate in a welding manner; an evaporation contact pipe is arranged at the middleof the evaporator, and a first filter plate is installed at the left side of the evaporator; the first filter plate is installed at the left side of the evaporator in an embedding manner; a filter screen is arranged in the first filter plate, and the first filter plate is fixedly connected with the filter screen; water absorption sponge is arranged in the drying tank, and the drying tank is located at the right side of the evaporator; a heat exchange pipe is installed in the heat exchange water tank, and the heat exchange water tank is located at the right side of a condensation water collection ball; and cutting plates are fixed to the upper side and the lower side of the back surface of the transition water tank, and the transition water tank is located below the right side of the heatexchange water tank. The air-energy water heater can be used in a cold environment, and is rapid in heating and stable in running.

The invention relates to the technical field of cement production, and discloses a raw material calcining device for cement production, which includes a frame, a rotary kiln is arranged on the upper end of the frame, and a preheating cylinder is connected to the front end of the rotary kiln, and The rear end of the rotary kiln is connected with a cooling cylinder, the upper end of the cooling cylinder is provided with an air suction port, one end of the preheating cylinder is connected with a preheating box, and the side of one end of the preheating cylinder and the side of one end of the cooling cylinder A liquid return pipe is provided, a compression refrigerator is provided in the middle of the liquid return pipe, a delivery pipe is provided between one end and the other side of the preheating cylinder and the other end side of the cooling cylinder, and one end of the air suction port is connected to There is an exhaust pipe. The invention fully recycles and utilizes the high temperature generated when the raw material is calcined into high-temperature clinker, and uses the recovered high-temperature heat to fully preheat the raw material to improve its calcination efficiency, avoid waste of resources, and simultaneously realize heat efficient recycling.

The invention discloses a delayed coking device and a counterflow steam pressure testing method for a coke tower. The device comprises blowing and pressure testing pipelines which are arranged at the top of a first coke tower and a second coke tower and is connected with the first coke tower and the second coke tower respectively or connected with the large oil and gas pipelines disposed at the top of the first coke tower and the second coke tower. The method comprises the steps of introducing pressure testing steam into the coke tower from the top of the coke tower, and replacing air in the coke tower from the bottom of the coke tower by flowing in the coke tower from top to bottom. With the device and the method provided by the invention, disadvantages in a conventional flow are overcome, and the operation is simple, flexible and reliable.

The invention discloses waste heat recycling equipment used in the grain and oil squeezing process. The waste heat recycling equipment comprises a grain and oil squeezing tank. An exhaust fan is welded to the top of the grain and oil squeezing tank. The bottom input end of the exhaust fan communicates with the top input end of the grain and oil squeezing tank. The output end of one side of the exhaust fan is fixedly connected with the input end of an exhaust pipe. Through starting of a circulation pump, cold water is guided into a spiral water pipe, cold water and hot water heat energy exchange is conducted, and the output end of the spiral water pipe can be connected into a domestic water pipeline. An air pump is used for guiding outside air into the spiral air pipe for heat energy exchange, the output end of the spiral air pipe guides the cold air into the bottom of the grain and oil squeezing tank, raw materials at the bottom of the grain and oil squeezing tank can be conveniently preheated, smoke can be thoroughly treated, and the dust removal efficiency is improved. Meanwhile, a smoke distribution chamber and a first smoke treatment chamber are in communication through a plurality of ventilation pipelines, and smoke treatment is more uniform.

The invention discloses a circular gravure printing and embossing production line which comprises a discharging mechanism, a collecting mechanism, a printing unit, a hot air drying mechanism and a material, wherein the hot air drying mechanism is installed on the rear side surface of the printing unit, the material is printed on the printing unit, the material is conveyed from the discharging mechanism to the collecting mechanism, a leading-in mechanism is arranged at the left end of the printing unit, and a leading-out mechanism is arranged at the right end of the printing unit. According to the circular gravure printing and embossing production line, physical plastic deformation pretreatment is conducted on the printing material through traction preheating so as to reduce the quality problem caused by thermal deformation of the printing material in the printing process, a large-pressure direct pressing mode is adopted for printing and embossing so as to ensure tension stability and the transfer rate of printing dots, the printing effect is full and real, each group of printing is independently driven by a servo motor, the tension between plates is stable and adjustable, the drying effect and the drying speed of water-based ink printing are ensured through the arrangement of a printing and top printing oven structure, and roller sticking and fading are avoided.