32results about How to "High energy saving and environmental protection efficiency" patented technology

A multifunctional window structure is composed of a window frame sectional material, a primary shaft main body, glass and a protective frame, a clean-free window screen, a primary shaft system, glass for cleaning indoors and outdoors automatically, an electric / manual switching mechanism locking state, an air filtering decompression device, a transparent, insulting, soundproof flexible rolling window which can be rolled up, double-layer flexible transparent curtain, a theft-proof telescopic guard rail, separated glass of the transparent insulating curtain, a transparent, insulating and soundproof flexible rolling door which can be rolled up. Glass (39) with the glass protective frame (40), a gland strip (70), a window sill bracket (36), a music promoting alarm (186) for opening and closingwindow, and a decorative cover (153) are installed in the separated window frame (3). The fully invisible window screen (42) and the glass (39) are connected actively. The steel cable (19) is installed on the glass protective frame (40). The upper bright band (180) is installed on the window frame sectional material (13).

The invention relates to a dynamic compactor which is provided with a working component, a walking component and an operating platform. The operating platform is arranged on the walking component, the working component is installed on the dynamic compactor and comprises a main winch and a driving mechanism thereof, the main winch driving mechanism is provided with an engine, a coupler device and a speed reduction box assembly. The speed reduction box assembly is connected with the main winch. The dynamic compactor is characterized in that the engine and the coupler device are fixed to be a whole and form an engine coupler assembly, and the engine coupler assembly and the speed reduction box assembly are coaxially installed. The invention further comprises a method for controlling the dynamic compactor. The dynamic compactor is simple in structure and convenient to use, construction data of the dynamic compactor can be automatically detected, and working efficiency and safety are improved.

The invention relates to a special-purpose solid cleaning agent of a dish-washing machine and a preparation method thereof. The special-purpose solid cleaning agent consists of the following substances in percent by weight: 20%-50% of sodium hydroxide or / and potassium hydroxide, 15%-30% of sodium carbonate, 10%-20% of sodium metasilicate, 3%-6% of sodium dichloro isocyanurate or imidazolidinedione, 4%-8% of EDTA (Ethylene Diamine Tetraacetic Acid), 1%-5% of sodium citrate, 5%-10% of a dispersing agent PAA (Poly Acrylic Acid), 1%-5% of borax and the balance of water. The preparation method of the special-purpose solid cleaning agent comprises the following steps of preparing the solid substances according to a proportion of the formula; starting up a reaction kettle, and respectively adding the solid materials under stirring; adding water after all solid materials are added and uniformly stirred; starting to heat up inside the reaction kettle with the addition of water, so that the materials generate reaction; stirring reactants for cooling to 50 DEG C-60DEG C, and starting to discharge; metering and pouring moving materials to a product container when the moving materials are hot, cooling and forming to obtain a finished product. The preparation method disclosed by the invention is low in reaction temperature, good in reactant mobility, easy for finally forming, energy-saving, environment-friendly and high in efficiency.

The invention belongs to the technical field of robots, and particularly relates to a symmetrical robot joint. The symmetrical robot joint comprises a base, a waist seat, a big arm, a three-axis assembly, a small arm, a wrist shaft assembly, and an end flange which are rotatably connected in sequence, wherein a five-axis driving mechanism and a six-axis driving mechanism are symmetrically arrangedin the small arm, the five-axis driving mechanism is connected with the wrist shaft assembly and used for driving the wrist shaft assembly to rotate around a fifth axis relative to the small arm, thesix-axis driving mechanism is connected with the end flange and used for driving the end flange to rotate around a sixth axis, and the sixth axis is perpendicular to the fifth axis. A precision speedreducer of the symmetrical robot joint is transferred from the six-axis axis position to the five-axis axis position, the hollow performance, the miniaturization and the flexibility of the six-axis are improved, and therefore, the transmission viscous resistance is small, the energy-saving and environment-friendly efficiency is high, the inertia is small, and the control difficulty is low.

An ice making evaporator is added on an air source heat pump, multiple loops can be formed, multiple modes and multiple working conditions of air source heating, ice making heating, heat storage, icemaking cold storage, and direct refrigeration are operated, a cooling tower does not need to be matched, ice making heating can be achieved, a water source facility is not needed, ice treatment measures are not needed, one device is adopted to achieve the aims of efficient clean heat supply, peak clipping valley filling energy-saving cold supply and efficient heat supply under the ultra low temperature environment, the distribution low cost direct cold heat energy storage mode is achieved, the energy-saving and environment-friendly aims of the cold and heat supply can be achieved in an economic manner, and the effective buffering and stable foundation is provided for new energy power generation efficient running.

The invention discloses a printing and dyeing auxiliary, printing and dyeing ink for a textile and an integrated device and a preparation method thereof. The printing and dyeing auxiliary is prepared from N-methyl-2-pyrrolidone, dyes, urea, dodecylbenzene sodium sulfate and deionized water, and the preparation method comprises the following steps: weighing and placing the N-methyl-2-pyrrolidone, the dyes, the urea, the dodecylbenzene sodium sulfate and the deionized water into corresponding containers according to weight percentage, placing the spare N-methyl-2-pyrrolidone and dyes into a stirred vessel to stir and mix uniformly, standing, then placing the spare urea, dodecylbenzene sodium sulfate and deionized water in the stirred vessel of the spare N-methyl-2-pyrrolidone and dyes to stir and mix uniformly, and filtering an obtained mixture to obtain the finished printing and dyeing auxiliary for the textile. The printing and dyeing auxiliary, the printing and dyeing ink for textile and the integrated device and the preparation method thereof avoid the complicated process of high temperature steaming, boiling and cleaning treatment of the textile, save energy, protect environment, are high in efficiency, are free from waste water discharge, and capable of reducing product cost.

The invention belongs to the technical field of robots, and particularly relates to a front-loaded drive type robot joint. The front-loaded drive type robot joint comprises a base, a lumbar seat, a big arm, a three-shaft component, a small arm, a wrist shaft component and a tail end flange which are connected in sequence, wherein a five-shaft driving mechanism connected to the wrist shaft component is arranged in the small arm and is used for driving the wrist shaft component to rotate around a fix-shaft axis; a six-shaft driving mechanism connected to the tail end flange is arranged in the wrist shaft component and is used for driving the tail end flange to rotate around a six-shaft axis; and the six-shaft axis is perpendicular to the fix-shaft axis. A six-shaft motor is transferred fromthe position of a conventional small arm to the position of the wrist shaft component, so that the hollowness, miniaturization and flexibility of six shafts are improved; and the front-loaded drive type robot joint has small transmission viscosity resistance, high energy saving and environmental protection efficiency, small inertia and low control difficulty.

The invention discloses a heat exchange enhancement floor heating system which comprises a heat source device, a control device and a floor heating pipeline. The floor heating pipeline comprises round pipe segments; the round pipe segments are connected with oval pipe segments through oval transitional segments; all the round pipe segments are equal in length; all the oval pipe segments are equal in length; the cross angle of long axes of ovals of the sections of every two adjacent oval pipe segments ranges from 15 degrees to 90 degrees; the shape of the cross section of each oval transitional pipe segment is a standard oval or an approximate oval or a flat circle formed by two straight lines and two arcs or a symmetric or nearly symmetric flat circle formed by fitting multiple arcs or a circle; all the oval transitional segments are equal in length; round pipe joint segments are arranged at the two ends of the floor heating pipeline; the inner walls of the round pipe joint segments are smooth; and the inner diameter of the round pipe joint segments is the same as that of the round pipe segments. The heat exchange enhancement floor heating system is simple in structure, the balance of a speed field and a temperature gradient field is effectively and reasonably coordinated, and energy conservation and environment protection efficiency is high.

The invention relates to carbon-rich coal which comprises the components of a natural raw coal synthetic base material, a modified plant optimization material, an environmental-friendly purificant, an energy polymerization accelerant and the like. The carbon-rich coal is formed through chemical and physical transformation processes and scientific matter rearrangement. The finished product of the carbon-rich coal not only has significant change and optimized rearrangement in structure, properties, performance and quality, but also achieves the purposes of increment of combustion value and thermal efficiency, energy saving and environmental protection. The reproducibility of the carbon-rich coal is strong, the original coal energy source can be saved to a large extent, and the saving rate is as high as 50-80%; the carbon-rich coal has the calorie as high as 6000-7200, contains only 0.2-0.5% of sulfur and 50-65% of fixed carbon, has the Ringelmann number of 20-40%, is excellent and clean, and has high quality, thereby being called as carbon-rich coal. The carbon-rich coal can be widely applied to industry and civil use and has wide application, great significance and extreme perfectness.

The invention discloses an improved heat exchange enhanced radiator which comprises a heat exchange tube. The heat exchange tube comprises round tube sections which are connected with elliptical tube sections through elliptical transitional sections, wherein the round tube sections are equal in length, the elliptical tube sections are equal in length, and the crossing angle of long axes of section ellipses of every two adjacent elliptical tube sections ranges from 15 degrees to 90 degrees. The cross section of each elliptical tube section is shaped like a standard ellipse or an approximate ellipse or an oblate circle formed by two straight lines and two arcs or a symmetric or approximately symmetric oblate circle or circle formed by fitting multiple sections of arcs. The elliptical transitional sections are equal in length. The two ends of the heat exchange tube are provided with round tube joint sections with the smooth inner walls. The internal diameter of the round tube joint sections is the same with the internal diameter of the round tube sections. The improved heat exchange enhanced radiator is simple in structure, the speed field and the temperature gradient field are effectively and reasonably coordinated to be balanced, and the improved heat exchange enhanced radiator saves energy and is environment-friendly and high in efficiency.

The invention discloses a heat exchange reinforcement radiator which comprises a heat exchange pipe. The heat exchange pipe comprises round pipe segments. The round pipe segments are connected with oval pipe segments through oval transition segments. All the round pipe segments are equal in length. All the oval pipe segments are equal in length. The cross angle of section oval long axes of every two adjacent oval pipe segments ranges from 15 degrees to 90 degrees. The cross section of the oval transition pipe segments is in the shape of a standard oval or the shape similar to an oval or the shape of a flat round formed by two straight lines and two arcs or the shape of a symmetric and approximately symmetric flat round or round formed by fitting a plurality of segments of arc lines. All the oval transition pipe segments are equal in length. Round pipe connector segments are arranged at the two ends of the heat exchange pipe. The inner walls of the round pipe connector segments are smooth. The inner diameter of the round pipe connector segments is equal to that of the round pipe segments. The heat exchange reinforcement radiator is simple in structure, balance of a speed field and a temperature gradient field is effectively and reasonably coordinated, and the energy saving and environment protecting efficiency is high.

The invention discloses a novel heat exchange enhanced radiator, which comprises a heat exchange tube, and the heat exchange tube includes a circular tube section; the circular tube section is connected to an elliptical tube section through an elliptical transition section; each circular tube section has the same length; each elliptical tube section has the same length; The intersecting angle of the elliptical major axes of two adjacent elliptical pipe sections is 15°~90°; the cross-sectional shape of the elliptical transitional pipe section is a standard ellipse or an approximate ellipse or an oblate circle or multiple sections formed by two straight lines plus two arcs Symmetrical and approximately symmetrical flat circles or circles fitted by arcs; each ellipse transition pipe section is equal in length; the two ends of the heat exchange tube are provided with circular pipe joint sections; the inner wall of the circular pipe joint section is smooth; the circular pipe joint section It is the same as the inner diameter of the circular pipe section. The invention has a simple structure, effectively and reasonably coordinates the balance of the velocity field and the temperature gradient field, and has high energy saving and environmental protection efficiency.

The invention discloses a novel heat exchange enhanced floor heating, which includes heat source equipment, control equipment and floor heating pipes. The floor heating pipes include round pipe sections; Equal length; the intersection angle of the elliptical major axes of two adjacent elliptical pipe sections is 15°~90°; the cross-sectional shape of the elliptical transition pipe section is a standard ellipse or an approximate ellipse or an oblate circle formed by two straight lines and two arcs Symmetrical and approximately symmetrical flat circles or circles fitted with a shape or multiple arcs; each ellipse transition pipe section is equal in length; the two ends of the floor heating pipeline are provided with a round pipe joint section; the inner wall of the round pipe joint section is smooth; the round pipe The inner diameter of the joint section is the same as that of the circular pipe section. The invention has a simple structure, effectively and reasonably coordinates the balance of the velocity field and the temperature gradient field, and has high energy saving and environmental protection efficiency.

The invention discloses a heat exchange enhanced radiator, which comprises a heat exchange tube, and the heat exchange tube includes a circular tube section; the circular tube section is connected to an elliptical tube section through an elliptical transition section; each circular tube section is of equal length; each elliptical tube section is of equal length; The intersecting angle of the elliptical major axes of two adjacent elliptical pipe sections is 15°~90°; the cross-sectional shape of the elliptical transition pipe section is a standard ellipse or an approximate ellipse or an oblate circle or multiple arcs formed by two straight lines plus two arcs. Symmetrical and approximately symmetrical flat circles or circles fitted by lines; each ellipse transition pipe section is equal in length; the two ends of the heat exchange tube are provided with a circular pipe joint section; the inner wall of the circular pipe joint section is smooth; the circular pipe joint section and The inner diameters of the circular pipe sections are the same. The invention has a simple structure, effectively and reasonably coordinates the balance of the velocity field and the temperature gradient field, and has high energy saving and environmental protection efficiency.

The invention discloses an improved heat exchange enhanced water heater. A heat source device of the improved heat exchange enhanced water heater comprises a heat exchange pipe. The heat exchange pipe comprises round pipe sections. The round pipe sections are connected with oval pipe sections through oval transition sections. The round pipe sections are equal in length. The oval pipe sections are equal in length. The cross angle of section oval long axes of the two adjacent oval pipe sections is 15-90 degrees. The cross sections of the oval transition pipe sections are in the shape of a standard oval or the shape similar to the oval or the shape of a flat round formed by two straight lines and two circular arcs or the shape of the symmetric and similarly-symmetric flat round or circle formed through fitting of multiple sections of arcs. The oval transition pipe sections are equal in length. The two ends of the heat exchange pipe are provided with round pipe connector sections. The inner walls of the round pipe connector sections are smooth. The round pipe connector sections and the round pipe sections are equal in inner diameter. The improved heat exchange enhanced water heater is simple in structure, the balance of a speed field and a temperature gradient field is effectively and reasonably coordinated, energy saving and environment friendliness are achieved, and efficiency is high.

The invention discloses an improved heat exchange enhanced floor heating, which includes heat source equipment, control equipment and floor heating pipes. The floor heating pipe includes a circular pipe section; the circular pipe section is connected to an elliptical pipe section through an elliptical transition section; each circular pipe section is equal in length; Equal length; the intersection angle of the elliptical major axes of two adjacent elliptical pipe sections is 15°~90°; the cross-sectional shape of the elliptical transition pipe section is a standard ellipse or an approximate ellipse or an oblate circle formed by two straight lines and two arcs Symmetrical and approximately symmetrical flat circles or circles fitted with a shape or multiple arcs; each ellipse transition pipe section is equal in length; the two ends of the floor heating pipeline are provided with a round pipe joint section; the inner wall of the round pipe joint section is smooth; the round pipe The inner diameter of the joint section is the same as that of the circular pipe section. The invention has a simple structure, effectively and reasonably coordinates the balance of the velocity field and the temperature gradient field, and has high energy saving and environmental protection efficiency.

The invention relates to a special-purpose solid cleaning agent of a dish-washing machine and a preparation method thereof. The special-purpose solid cleaning agent consists of the following substances in percent by weight: 20%-50% of sodium hydroxide or / and potassium hydroxide, 15%-30% of sodium carbonate, 10%-20% of sodium metasilicate, 3%-6% of sodium dichloro isocyanurate or imidazolidinedione, 4%-8% of EDTA (Ethylene Diamine Tetraacetic Acid), 1%-5% of sodium citrate, 5%-10% of a dispersing agent PAA (Poly Acrylic Acid), 1%-5% of borax and the balance of water. The preparation method of the special-purpose solid cleaning agent comprises the following steps of preparing the solid substances according to a proportion of the formula; starting up a reaction kettle, and respectively adding the solid materials under stirring; adding water after all solid materials are added and uniformly stirred; starting to heat up inside the reaction kettle with the addition of water, so that the materials generate reaction; stirring reactants for cooling to 50 DEG C-60DEG C, and starting to discharge; metering and pouring moving materials to a product container when the moving materials are hot, cooling and forming to obtain a finished product. The preparation method disclosed by the invention is low in reaction temperature, good in reactant mobility, easy for finally forming, energy-saving, environment-friendly and high in efficiency.

The invention provides an automatic control efficient multi-oxygen combustion ultra-low emission industrial kiln. The industrial kiln is provided with a kiln hole, a kiln vehicle, kiln vehicle operation tracks and driving mechanisms. The kiln hole is in an approximate prism shape and provided a first branch hole and a second branch hole, a first connection hole and a second connection hole are formed, and the kiln vehicle operation tracks which communicate mutually and the driving mechanisms are arranged in the branch holes and the connection holes correspondingly. A preheating zone, a firingzone and a cooling zone are sequentially arranged in the first branch hole. A blank feeding zone 7, a drying zone 2 and a separation zone 8 are arranged in the second branch hole. A first kiln vehicletrack transfer mechanism is arranged in the first connection hole, a second kiln vehicle track transfer mechanism is arranged in the second connection hole, a first induced draft fan and a second induced draft fan are further arranged, and a fuel gas pipe, a fuel gas spray head, a combustion-supporting gas pipe, a combustion-supporting gas spray head and an igniter are arranged in the firing zone. Compared with a conventional combustion method, flue gas emission is reduced by 70% or more, flue gas basically contains no nitric oxide, energy consumption is reduced, the heat utilization rate ishigh, the heating firing efficiency and the product production efficiency are improved, the energy conservation and environment protection effect is good, gas fuel consumption is reduced, the purposesof energy conservation and environment protection are achieved, automatic control is flexible, and the operation cost is greatly reduced.

The invention belongs to the technical field of robots, and particularly relates to a hinge type robot joint. The hinge type robot joint comprises a bottom seat, a waist seat, a large arm, a three-axis driving component, a small arm, a wrist shaft component and a tail end flange, wherein the waist seat is arranged on the bottom seat and is rotatably connected with the bottom seat; one end of the big arm is rotatably connected with the waist seat; the other end of the big arm is rotatably connected with the three-axis driving component; one end of the small arm is rotatably connected with the three-axis driving component; the other end of the small arm is rotatably connected with the wrist shaft component; the tail end flange is rotatably connected with the wrist shaft component and is hinged to the small arm; and the three-axis driving component is used for driving the small arm to rotate relative to the three-axis driving component, the wrist shaft component to rotate relative to thesmall arm, and the tail end flange to rotate relative to the wrist shaft component.

The invention discloses a novel heat exchange enhanced pipe. The novel heat exchange enhanced pipe comprises round pipe sections. The round pipe sections are connected with oval pipe sections through oval transition sections. The round pipe sections are equal in length. The oval pipe sections are equal in length. The cross angle of section oval long axes of the two adjacent oval pipe sections is 15-90 degrees. The cross sections of the oval transition pipe sections are in the shape of a standard oval or the shape similar to the oval or the shape of the flat round formed by two straight lines and two circular arcs or the shape of the symmetric and similarly-symmetric flat round or circle formed through fitting of multiple sections of arcs. The oval transition pipe sections are equal in length. The two ends of the novel heat exchange enhanced pipe are provided with round pipe connector sections. The inner walls of the round pipe connector sections are smooth. The round pipe connector sections and the round pipe sections are equal in inner diameter. The novel heat exchange enhanced air conditioner is simple in structure, the balance of a speed field and a temperature gradient field is effectively and reasonably coordinated, energy saving and environment friendliness are achieved, and efficiency is high.

The invention discloses a novel heat exchange enhanced water heater. The heat source device includes a heat exchange tube, and the heat exchange tube includes a circular pipe section; the circular pipe section is connected to an elliptical pipe section through an elliptical transition section; each circular pipe section has the same length; each elliptical pipe section, etc. Long; the intersection angle of the elliptical major axes of two adjacent elliptical pipe sections is 15°~90°; the cross-sectional shape of the elliptical transition pipe section is a standard ellipse or an approximate ellipse or an oblate circle formed by two straight lines and two arcs Symmetrical and approximately symmetrical flat circles or circles or multi-section arc fitting; each ellipse transition pipe section is equal in length; the two ends of the heat exchange tube are provided with a round pipe joint section; the inner wall of the round pipe joint section is smooth; the round pipe The inner diameter of the joint section is the same as that of the circular pipe section. The invention has a simple structure, effectively and reasonably coordinates the balance of the velocity field and the temperature gradient field, and has high energy saving and environmental protection efficiency.

The invention discloses a heat exchange enhanced pipe. The heat exchange enhanced pipe comprises round pipe sections. The round pipe sections are connected with oval pipe sections through oval transition sections. The round pipe sections are equal in length. The oval pipe sections are equal in length. The cross angle of section oval long axes of the two adjacent oval pipe sections is 15-90 degrees. The cross sections of the oval transition pipe sections are in the shape of a standard oval or the shape similar to the oval or the shape of the flat round formed by two straight lines and two circular arcs or the shape of the symmetric and similarly-symmetric flat round or circle formed through fitting of multiple sections of arcs. The oval transition pipe sections are equal in length. The two ends of the heat exchange enhanced pipe are provided with round pipe connector sections. The inner walls of the round pipe connector sections are smooth. The round pipe connector sections and the round pipe sections are equal in inner diameter. The heat exchange enhanced pipe is simple in structure, the balance of a speed field and a temperature gradient field is effectively and reasonably coordinated, energy saving and environment friendliness are achieved, and efficiency is high.

The invention discloses waste gas circulation purification equipment for biomass particle combustion, which comprises a dry filter, a fan communicated with the left side of the dry filter, a spray tower arranged on the left side of the fan and communicated with the fan, and a driving motor in transmission connection with the fan; the right side of the spray tower is fixedly connected with a spiral pump body; the input end of the spiral pump body is communicated with the surface of the spray tower, the output end of the spiral pump body is communicated with a lifting pipe, and the right side of the spray tower is fixedly connected with a treatment box. Spraying liquid is pumped by the spiral pump body through the lifting pipe and injected into the treatment box, the spraying liquid is filtered through the filter screen and injected into the spray tower again through a backflow pipe to form circulation, and the problems that existing waste gas purification equipment is poor in circulation effect, single in structure and function, high in efficiency and the like are solved. The effect of reducing the waste gas treatment cost cannot be met, and the device is inconvenient to use in various environments.

The invention discloses an improved heat exchange enhanced radiator, which comprises a heat exchange tube, and the heat exchange tube includes a circular tube section; the circular tube section is connected to an elliptical tube section through an elliptical transition section; each circular tube section has the same length; each elliptical tube section has the same length; The intersecting angle of the elliptical major axes of two adjacent elliptical pipe sections is 15°~90°; the cross-sectional shape of the elliptical transitional pipe section is a standard ellipse or an approximate ellipse or an oblate circle or multiple sections formed by two straight lines plus two arcs Symmetrical and approximately symmetrical flat circles or circles fitted by arcs; each elliptical transition pipe section is equal in length; the two ends of the heat exchange tube are provided with circular pipe joint sections; the inner wall of the circular pipe joint section is smooth; the circular pipe joint section It is the same as the inner diameter of the circular pipe section. The invention has a simple structure, effectively and reasonably coordinates the balance of the velocity field and the temperature gradient field, and has high energy saving and environmental protection efficiency.

The invention discloses a novel heat exchange enhanced air conditioner. A heat exchanger of the novel heat exchange enhanced air conditioner comprises a heat exchange pipe. The heat exchange pipe comprises round pipe sections. The round pipe sections are connected with oval pipe sections through oval transition sections. The round pipe sections are equal in length. The oval pipe sections are equal in length. The cross angle of section oval long axes of the two adjacent oval pipe sections is 15-90 degrees. The cross sections of the oval transition pipe sections are in the shape of a standard oval or the shape similar to the oval or the shape of the flat round formed by two straight lines and two circular arcs or the shape of the symmetric and similarly-symmetric flat round or circle formed through fitting of multiple sections of arcs. The oval transition pipe sections are equal in length. The two ends of the heat exchange pipe are provided with round pipe connector sections. The inner walls of the round pipe connector sections are smooth. The round pipe connector sections and the round pipe sections are equal in inner diameter. The novel heat exchange enhanced air conditioner is simple in structure, the balance of a speed field and a temperature gradient field is effectively and reasonably coordinated, energy saving and environment friendliness are achieved, and efficiency is high.

The invention discloses a novel heat exchange enhanced floor heating system. The novel heat exchange enhanced floor heating system comprises a heat source device, a control device and a floor heating pipeline. The floor heating pipeline comprises round pipe sections. The round pipe sections are connected with oval pipe sections through oval transition sections. The round pipe sections are equal in length. The oval pipe sections are equal in length. The cross angle of section oval long axes of the two adjacent oval pipe sections is 15-90 degrees. The cross sections of the oval transition pipe sections are in the shape of a standard oval or the shape similar to the oval or the shape of the flat round formed by two straight lines and two circular arcs or the shape of the symmetric and similarly-symmetric flat round or circle formed through fitting of multiple sections of arcs. The oval transition pipe sections are equal in length. The two ends of the floor heating pipeline are provided with round pipe connector sections. The inner walls of the round pipe connector sections are smooth. The round pipe connector sections and the round pipe sections are equal in inner diameter. The novel heat exchange enhanced floor heating system is simple in structure, the balance of a speed field and a temperature gradient field is effectively and reasonably coordinated, energy saving and environment friendliness are achieved, and efficiency is high.

The invention relates to the field of demolition of buildings, in particular to a dust prevention and noise reduction device for concrete reconstruction chiseling and a using method thereof. The dustprevention and noise reduction device for concrete modification chiseling comprises a breaking hammer (1) and is characterized by further comprising a sleeve (2), a drill rod (3) and a rubber sleeve (4), wherein the top end of the sleeve (2) is embedded in the bottom end face of the breaking hammer (1), the top end of the drill rod (3) is movably arranged in the sleeve (2) and blocked by the bottom end of the sleeve (2), and the rubber sleeve (4) is hooped on the outer side surface of the drill rod (3). The using method of the dust prevention and noise reduction device for concrete reconstruction chiseling is characterized by being implemented according to the following steps in sequence of: 1, mounting the breaking hammer; 2, mounting the rubber sleeve; 3, crushing; and 4, dismantling. According to the device and the method, noise is reduced, and dust is reduced.

The invention discloses a cross oval section and round face heat exchange enhanced pipe. The cross oval section and round face heat exchange enhanced pipe comprises round pipe sections. The round pipe sections are connected with oval pipe sections through oval transition sections. The round pipe sections are equal in length. The oval pipe sections are equal in length. The cross angle of section oval long axes of the two adjacent oval pipe sections is 60-90 degrees. The cross sections of the oval transition pipe sections are in the shape of a standard oval or the shape similar to the oval or the shape of the flat round formed by two straight lines and two circular arcs or the shape of the symmetric and similarly-symmetric flat round or circle formed through fitting of multiple sections of arcs. The oval transition pipe sections are equal in length. The two ends of the cross oval section and round face heat exchange enhanced pipe are provided with round pipe connector sections. The inner walls of the round pipe connector sections are smooth. The round pipe connector sections and the round pipe sections are equal in inner diameter. The cross oval section and round face heat exchange enhanced pipe is simple in structure, the balance of a speed field and a temperature gradient field is effectively and reasonably coordinated, energy saving and environment friendliness are achieved, and efficiency is high.

The invention belongs to the technical field of robots, and particularly relates to a hinge-type robot joint. It includes a base, a waist seat, a large arm, a three-axis drive assembly, a small arm, a wrist shaft assembly and an end flange. The waist seat is arranged on the base and is rotatably connected to the base. One end of the big arm is rotatably connected to the waist seat, and the other One end is rotatably connected with the three-axis drive assembly, one end of the forearm is rotatably connected with the three-axis drive assembly, the other end is rotatably connected with the wrist shaft assembly, the end flange is rotatably connected with the wrist shaft assembly, and is hinged with the forearm, the three-axis drive assembly It is used to drive the rotation of the forearm relative to the three-axis drive assembly, the rotation of the wrist shaft assembly relative to the forearm, and the rotation of the end flange relative to the wrist shaft assembly. The invention adopts the hinge structure, which simplifies the joint structure, has low transmission viscous resistance, and has high energy saving and environmental protection efficiency; meanwhile, the inertia is small and the control difficulty is low.

The invention discloses an improved heat exchange enhanced air conditioner. The heat exchanger includes a heat exchange tube, and the heat exchange tube includes a circular pipe section; the circular pipe section is connected to the elliptical pipe section through an elliptical transition section; each circular pipe section is equal in length; each elliptical pipe section Equal length; the intersection angle of the elliptical major axes of two adjacent elliptical pipe sections is 15°~90°; the cross-sectional shape of the elliptical transition pipe section is a standard ellipse or an approximate ellipse or an oblate circle formed by two straight lines and two arcs Symmetrical and approximately symmetrical flat circles or circles fitted with a shape or multiple arcs; each ellipse transition pipe section is equal in length; the two ends of the heat exchange tube are provided with a circular pipe joint section; the inner wall of the circular pipe joint section is smooth; the circle The inner diameter of the pipe joint section is the same as that of the circular pipe section. The invention has a simple structure, effectively and reasonably coordinates the balance of the velocity field and the temperature gradient field, and has high energy saving and environmental protection efficiency.