166results about How to "Improve maintenance effect" patented technology

The invention, which relates to the technical field of landscaping maintenance, discloses a landscaping maintenance control system comprising a data acquisition module, a data transmission module, a calculation processing module, a maintenance adjustment module and a monitoring optimization module. According to the system, various environmental data of landscaping can be collected in real time, a maintenance strategy is automatically customized in combination with the actual condition of landscaping maintenance, the control system can accurately control the humidity of soil, the irrigation strategy can be dynamically adjusted, efficient utilization of resources is achieved, and the system is suitable for large-scale popularization and application. And self-adaptive optimization and adjustment of the system are carried out based on data acquired in real time and comprehensive calculation and evaluation results, so that the system has the effects of intelligence and practicability.

The invention discloses an electric power infrastructure project-based concrete monitoring and curing device, which comprises a positioning frame fixedly placed at the periphery of a concrete infrastructure, the upper surface of one end of the positioning frame is fixedly connected with a rectangular frame, and the inner wall of the rectangular frame is movably connected with a threaded sleeve which performs lifting reciprocating motion; one side of the threaded sleeve is fixedly connected with a moving frame wrapping the periphery of the concrete infrastructure, the inner wall of the moving frame is fixedly connected with an annular pipe, and the inner wall of the annular pipe penetrates through and is fixedly connected with a plurality of atomizing nozzles for spraying a water source to the surface of the concrete infrastructure; rectangular plates are fixedly connected to the symmetrical positions of the two sides of the positioning frame correspondingly, the rectangular frame is provided with an adjusting mechanism for driving the movable frame to do lifting reciprocating motion, and the rectangular plates are provided with auxiliary mechanisms for covering the concrete infrastructure. And the curing effect on the concrete infrastructure is improved.

The invention relates to the technical field of workpiece maintenance, in particular to a processing and maintenance device and method for a concrete prefabricated part. The technical problem that when an existing curing device is used for curing a concrete prefabricated part, curing liquid is not in sufficient contact with the prefabricated part, the prefabricated part is difficult to sufficiently absorb the curing liquid, and the curing effect on the prefabricated part is poor is solved. The invention discloses a processing and curing device and method for a concrete prefabricated part. The processing and curing device comprises an outer frame, a maintenance plate, a supporting frame and the like. Maintenance plates are mounted on the two sides of the outer frame correspondingly, and supporting frames are fixedly connected to the two sides of the inner wall of the outer frame correspondingly. An electric sliding block is driven by an electric sliding rail so that maintenance liquid can be sprayed to the surface of the prefabricated part, a first rack enables the shielded part of the prefabricated part to be exposed through a first gear and a conveying roller, and the shielded bottom face of the prefabricated part is exposed and the maintenance liquid is sprayed while secondary spraying is conducted on the prefabricated part; and therefore, spraying on the surface of the prefabricated part is more sufficient, and the maintenance effect on the prefabricated part is enhanced.

The present invention relates to the technical field of concrete curing, and specifically to a concrete curing device for building construction, comprising a base and a placing bin arranged on the base, wherein an L-shaped supporting plate is movably arranged on the placing bin, a placing assembly is symmetrically arranged on the L-shaped supporting plate, a plastic film is arranged on the placing assembly, a water tank is arranged on the placing bin, and the placing assembly comprises a baffle plate symmetrically arranged on the L-shaped supporting plate, a placing plate arranged on one side of the baffle plate, a rotating plate movably arranged on the placing plate, and a movable seat movably arranged on an end of the rotating plate away from the placing plate. The present invention can provide a relatively closed environment for the plastic film, effectively isolate it from external moisture and dust, thereby protecting the plastic film from moisture and dust, so that it can be taken and used at any time, and at the same time, it can also avoid the risk of interaction with other construction equipment during the taking process, which may cause injury to the staff.

The present invention relates to the technical field of prefabricated box beams, and specifically to a prefabricated box beam maintenance device, comprising a bottom box and a recovery box, a water supply pump is horizontally arranged on the side of the bottom box, an input end of the water supply pump is provided with a connecting pipe, a maintenance box is provided on the top of the bottom box, a maintenance plate is slidably installed inside the maintenance box, a plurality of hydraulic jacks are provided at the internal bottom end of the maintenance box, and output ends of the plurality of hydraulic jacks are connected with the bottom of the maintenance plate, a beam body is horizontally placed on the top of the maintenance plate, an extrusion plate is slidably installed inside the bottom box, two extrusion columns are symmetrically arranged on the top of the extrusion plate, and the top ends of the two extrusion columns are connected with the bottom of the maintenance plate, a plurality of water spray pipes are provided on the outer walls on both sides of the bottom box, a first spray head is provided on the top end of the water spray pipe, and a maintenance mechanism for spraying the top and side surfaces of the beam body is also provided on the top of the bottom box. The present invention realizes the maintenance of the top, side and bottom surfaces of the beam body, and the maintenance effect is good.

The invention relates to the technical field of concrete curing, and particularly discloses a concrete tower column curing system which comprises a data acquisition module, a data monitoring module, an analysis control module, a data storage module and an automatic water spraying system which are connected in sequence. The data monitoring module is used for acquiring environment data in real time and sending the environment data to the analysis control module, and the environment data comprises wind speed, wind direction and humidity parameters; the wind field construction module is used for constructing canyon wind field information; the analysis control module comprises an analysis judgment unit and a mode switching unit; the analysis and judgment unit is used for judging whether the wind speed is larger than the set wind speed or not, if yes, the mode switching unit controls the automatic water spraying system to work in a spraying mode, and if not, the mode switching unit controls the automatic water spraying system to work in a spraying mode. The invention aims to solve the problem of poor water spraying maintenance effect of the concrete tower column due to the fact that the wind environment of the canyon where the existing tall tower column is located is complex and spray is blown away.

The invention discloses a natural gas engine performance monitoring system and method, and relates to the technical field of engines, and the system comprises a controller, a quality sensor and a pressure sensor; the quality sensor comprises an engine oil quality sensor and an air outlet flow quality sensor; the engine oil quality sensor is used for detecting oil product information of engine oil in a static state; the gas outlet flow quality sensor is used for detecting the gas leakage amount of the engine and the gas quality information of the gas in the static state and the dynamic state; the pressure sensor is used for detecting the pressure of the crankcase in a static state and a dynamic state; in the static state, the controller judges whether engine oil of the engine is replaced or not according to data collected by the engine oil quality sensor and judges whether the engine can start or not according to data collected by the air outlet flow quality sensor and the pressure sensor; in the dynamic state, the controller can judge whether the dynamic measurement value of the engine is within the pressure difference range or not according to data collected by the air outlet flow quality sensor and the pressure sensor, and if the dynamic measurement value exceeds the pressure difference range, torque limiting is conducted.

The utility model relates to the technical field of concrete electric poles, and discloses a concrete electric pole production energy-saving maintenance device which comprises a maintenance mechanism, an adjusting mechanism is installed on the inner wall of the maintenance mechanism, a supporting mechanism is arranged in the maintenance mechanism, and a concrete electric pole body is installed on the inner wall of the supporting mechanism. A steam mechanism is installed on the inner wall of the curing mechanism, a drainage mechanism is installed on one side of the curing mechanism, the adjusting mechanism comprises a supporting frame, the outer portion of the supporting frame is fixedly connected to the inner wall of the curing mechanism, and a first motor is fixedly connected to the top of the supporting frame. According to the electric pole steam spraying device, gas in the steam box is sucked through the draw-off pump, enters the flow dividing pipe through the connecting pipe and is finally sprayed out through the spraying head, the first motor drives the rotating plate to rotate, drives the follow-up plate to move and controls the limiting block so as to adjust the positions of the flow dividing pipe and the spraying head, and it is guaranteed that steam is evenly sprayed to the surface of an electric pole.

The utility model relates to the technical field of maintenance, in particular to a maintenance device for crack control of a large prefabricated part, which comprises a maintenance shed, a moving component and a spraying component, the upper parts of two ends of the maintenance shed are connected with electric rolling gates, the lower end of the maintenance shed is provided with a plurality of groups of ground rails, and the upper ends of the ground rails are connected with the moving component. A spraying assembly is connected to the inner wall of the curing shed, exhaust fans are arranged on the two sides of the upper end of the curing shed, air inlet fans are arranged on the lower portions of the two sides of the outer portion of the curing shed, a controller is arranged on one side of the curing shed, and the moving assembly is composed of a fixed frame, a first hydraulic rod, a moving frame, a bottom frame, a connecting frame, a second hydraulic rod, moving wheels and a frame. The spraying assembly is composed of a U-shaped pipe, a transverse pipe, a spraying head, a multi-head connector, a supporting frame, a water inlet connector and a limiting hoop.

The invention provides toughened anti-cracking and anti-corrosion solid waste concrete and a preparation method thereof. Mixing the cement, the fly ash, the slag and the natural aggregate; sequentially adding water, a weakly alkaline regulator and an additive solution containing a polycarboxylic acid water reducer to obtain concrete slurry; and curing to obtain the product. According to the invention, fly ash, slag solid waste and natural aggregate are used as aggregate, a water reducer is added to reduce the water consumption of concrete and improve the fluidity of concrete, and specially-made weakly-alkaline conditioning agent particles are introduced, so that the self-water-absorption-water-release behavior and bridging effect of the particles are utilized to improve the concrete fluidity. The early-stage and later-stage continuous hydration ability of a rubber material in the concrete is enhanced, the self-shrinkage and drying shrinkage resisting effects are achieved, the compactness and corrosion resistance of the concrete are improved, and then the anti-cracking ability of the all-solid waste concrete is improved. The surface of an obtained test piece is free of cracks, the 28d compressive strength reaches 46.6 MPa, the 28d breaking strength reaches 8.5 MPa, the self-shrinkage rate is 0.035%, and the drying shrinkage rate is 0.01%.

The utility model discloses a still kettle for autoclaved curing of concrete blocks, which relates to the technical field of processing of concrete blocks and comprises a kettle body, a hollow movable plate arranged inside the kettle body, rollers mounted at the bottom of the movable plate, a plurality of rotating frames rotatably mounted on the top wall of the movable plate, and a plurality of placing frames mounted on the rotating frames. The multiple placing frames are arranged at equal intervals in the vertical direction of the rotating frame. The concrete block placing device has the beneficial effects that the multiple placing frames are installed on the rotating frame and used for placing concrete blocks, the placing frames are driven by the rotating frame to do circular motion, the concrete blocks are made to move, placing plates in the placing frames are made to rotate through an auxiliary mechanism while the rotating frame rotates, and therefore the concrete blocks rotate automatically; therefore, in the autoclaved curing process, the concrete blocks rotate while doing circular motion, each concrete block can make full contact with steam, the uniformity of the curing quality is guaranteed, and the curing effect is improved.

The invention discloses a rail transit vehicle structure simulation demonstration and maintenance practical training system, relates to the technical field of simulation demonstration education, and solves the technical problem that the complex structure, various fault types and different maintenance processes of a vehicle cannot be comprehensively and deeply simulated. The rail transit vehicle model constructed through the three-dimensional modeling technology can accurately present detailed construction information of the vehicle, the system can accurately evaluate and analyze simulation operation of trainees according to a preset standard operation process for different fault simulations, and in multi-type fault simulations, the simulation efficiency of the trainees is greatly improved. The system can simulate static and dynamic fault phenomena respectively, allows students to perform operation training in a complex fault scene, enhances the ability of the students to deal with complex and changeable fault conditions in actual work, and combines a new fault scene according to other possible faults to allow the students to perform simulation operation again, thereby improving the training efficiency. Therefore, the fault processing knowledge and skills of students are continuously expanded, and the comprehensive maintenance capability is improved.

The invention provides an electric power information management method, which relates to the technical field of electric power information management, and remarkably improves the operation safety of an electric power system by comprehensively applying the steps of monitoring area division, electric power parameter safety threshold setting, data preprocessing, maintenance priority evaluation, maintenance personnel grade matching and the like. Key equipment can be maintained in time; meanwhile, the configuration of maintenance resources is optimized, the maintenance efficiency and effect are improved, the waste of the resources is avoided, the safety risk in the operation process is reduced, the decision support capability of a power enterprise is enhanced, and a scientific decision basis based on data is provided for a management layer.

The present application relates to the field of plunger pump, disclose a kind of slurry separation structure and plunger slurry pump, including pump body, flow guide pipe is equipped in pump body, the middle part of flow guide pipe is equipped with the isolation ring that follows plunger movement and moves up and down with action.Pumper upper part side end is equipped with plunger channel with medium oscillation cavity communication, plunger channel is connected with packing box, packing box is equipped with plunger, which can reciprocate transversely in plunger channel, flow guide pipe is located outside the lateral of plunger activity range.The present application can separate slurry medium, and effectively avoid the full turbulence of backwash medium and slurry medium, and plunger can be removed from the front end of pump body for maintenance, due to the existence of turbulence isolation ring, effectively shorten the size of pump body, improve the reliability of pump, maintainability, reduce manufacturing cost and improve the service life of spare parts.

The utility model discloses a civil air defense door maintenance device, and relates to the technical field of civil air defense doors. The cleaning device comprises a base, a cleaning assembly and a water spraying assembly, the top of the base is fixedly connected with a mounting frame, the top of the mounting frame is fixedly connected with a lifting mechanism, the front side of the lifting mechanism is fixedly connected with a cleaning plate, and the cleaning assembly is arranged on the rear side of the cleaning plate and comprises an adjusting plate. The rear side of the adjusting plate penetrates through the cleaning plate and is fixedly connected with a brush plate. Through the arrangement of the cleaning assembly, an eccentric wheel can be driven by a rotating motor to rotate, so that the eccentric wheel is matched with an adjusting plate to control a brush plate to rapidly reciprocate left and right, and the brush plate can rapidly clean dirt on the surface of the civil air defense door in the moving process; dirt which cannot be cleaned in the water washing process is brushed off, the surface of the civil air defense door is prevented from being corroded by the dirt, the strength of the civil air defense door is improved, and the service life of the civil air defense door is prolonged.

The utility model discloses a concrete test block curing box which comprises a box body, a plurality of servo motors arranged at equal intervals are installed on the outer side wall of the box body, the output ends of the servo motors are fixedly connected with linkage screws, the linkage screws are in threaded connection with linkage sliding blocks, and the tops of the linkage sliding blocks are fixedly connected with a supporting plate. By arranging the servo motor, the linkage screw rod, the T-shaped plate and other components, when a concrete test block needs to be placed on the supporting plate in the box body or taken out of the supporting plate, the supporting plate can be moved to the outside of the box body under the action of the servo motor, and at the moment, although the weight of the concrete test block is large, the concrete test block can be moved out of the box body. However, due to the sufficient space, the concrete test blocks can be taken and stored more conveniently, and due to the arrangement of the servo motor, the linkage screw and the like, the moving speed of the supporting plate can be effectively increased under the condition that the large-weight concrete test blocks are borne, so that the storage and taking efficiency of the concrete test blocks is higher.

The invention discloses a salsa sedge lipstick and a production process thereof, and relates to the field of lipstick; in order to improve the effect of repairing lip skin; the lipstick specifically comprises 15-25 parts of natural pigments, 20-35 parts of natural oils and fats, 15-30 parts of natural beeswax, 5-8 parts of natural plant essential oils, 30-40 parts of tridecyl trimellitate, 20-30 parts of diisostearyl malate, 12-18 parts of octyldodecanol, and 15-25 parts of triisostearate; the production process of the lipstick comprises the following steps: taking each raw material by weight for standby use; mixing and grinding the winged salsa sedge extract and the natural oils and fats into a mixed solution A. The invention selects the natural winged salsa sedge extract as the lipstick pigment, thereby ensuring the safety of use, and having no irritation to the skin, and is suitable for audiences with various sensitive skins, and because the salsa sedge seed extract oil is added to the ingredients, based on the health care function, it can repair the lip cells when used.

The utility model provides a concrete curing device, which aims to solve the technical problem that the concrete curing effect is poor when a cotton felt, a cotton quilt, a grass curtain and the like are used for heat preservation, and comprises a curing chamber, a mist unit, a concrete curing unit, a temperature adjusting box, an air inlet unit and a rotating unit, the mist unit comprises a mist box and an ultrasonic nebulizer; the concrete curing unit comprises a supporting plate, a rotating motor, a first rotating rod, a second rotating rod and a third rotating rod, the rotating motor is connected with the first rotating rod, the second rotating rod is arranged on the first rotating rod in the circumferential direction of the first rotating rod, the third rotating rod is arranged on the second rotating rod in the circumferential direction of the second rotating rod, the supporting plate is connected to the end of the third rotating rod, and a bearing groove is formed in the top of the supporting plate; the temperature adjusting box is communicated with the mist box; the air inlet unit is communicated with the temperature adjusting box; the rotating unit comprises a rotating motor and a rotating impeller which are connected through a rotating shaft, the rotating impeller is provided with a third containing cavity, the third containing cavity communicates with the second containing cavity, the rotating impeller is provided with an air outlet pipe, and the maintenance effect is good.

The invention relates to the technical field of road maintenance, and particularly discloses a road bridge and tunnel construction device which comprises a movable base, a water storage tank fixedly connected with the movable base, a mounting box with an opening in the bottom and an adjusting mechanism arranged in the mounting box. The mounting box is fixedly connected with the water tank, and air ports are formed in the two sides of the mounting box; the maintenance mechanism comprises a vertical pipe, a transverse pipe and adjusting assemblies symmetrically arranged on the two sides of the vertical pipe in the length direction of the vertical pipe. The vertical pipe is fixedly connected with the mounting box and is communicated with the water tank; the transverse pipe is communicated with the free end of the vertical pipe; the adjusting assembly comprises an adjusting pipe, an atomizing nozzle, a maintaining part, a side hole formed in the vertical pipe, a top hole formed in the transverse pipe, an adjusting block used for sealing the top hole and a driving part used for driving the adjusting block to do reciprocating motion in the length direction of the transverse pipe. The problem that an existing spraying device cannot carry out dust falling treatment on dust dispersed on a road surface is solved.

The invention discloses a concrete curing device for road construction, and relates to the technical field of concrete curing, the concrete curing device comprises a bottom plate, four telescopic pieces are arranged below the bottom plate, moving wheels are connected below the telescopic pieces, the left end of the bottom plate is connected with a traction block, a water tank is arranged on the bottom plate, and a filling port is formed in the water tank; first ends of two connecting pipes are respectively connected below the bottom plate below the water tank, second ends of the two connecting pipes are connected with the same distributive pipe, a plurality of nozzles are respectively arranged below the distributive pipe, the first ends of the two connecting pipes respectively penetrate through the bottom plate and are communicated with the bottom wall of the water tank, and a cleaning mechanism for cleaning a road surface is arranged below the bottom plate on the left side of the distributive pipe; collecting mechanisms for collecting cleaned sundries are arranged on the two sides of the cleaning mechanism, and the collecting mechanisms are driven by the cleaning mechanism; two first fixing plates are arranged below the bottom plate on the right side of the water distribution pipe, and a first rotating shaft is rotationally arranged between the two first fixing plates; the device is simple and reliable in structure, good in concrete curing effect, convenient to control and suitable for popularization.

This invention relates to the field of railway bridge pier maintenance technology, specifically a smart maintenance system for high-speed railway bridge piers. It includes two symmetrically locked, arc-shaped support frames on the upper arc-shaped structure of the pier. Each support arc-shaped support frame is connected to a spraying component. Locking components are provided on the sides of the support arc-shaped support frames corresponding to the pier for securing them to the pier. This system can perform comprehensive spraying maintenance on bridge piers of different models. Simultaneously, the locking components in this system can stably lock the support arc-shaped support frames to the arc-shaped structure at the upper end of the pier and its top connecting protrusion, thus preventing the spraying pipes from loosening. The system can automatically control the system to perform timed spraying maintenance on the bridge piers through a central control module. A humidity sensor can determine whether it is raining; spraying maintenance will not be performed during rainy weather, and spraying maintenance will stop if rainfall occurs during the spraying process.

This invention discloses a health insole containing Atractylodes lancea and its manufacturing process, comprising a breathable surface layer, an Atractylodes lancea functional layer, and an elastic base layer arranged sequentially from top to bottom. The Atractylodes lancea functional layer contains microcapsules containing active ingredients, enabling the slow release of these active ingredients and their efficacy. The Atractylodes lancea functional layer employs a "locally thickened Atractylodes lancea functional layer" design in key areas such as the sole and heel of the insole to enhance the herbal care effect. The breathable surface layer has ventilation channels to achieve "strong antibacterial effect during use and energy-saving and efficacy-preserving effect when idle." This application solves the problems of easy attenuation of the efficacy of traditional Chinese medicine in existing insoles, rapid release of medicinal properties, lack of targeted care for key areas, and poor prevention and treatment effects. It precisely matches the foot health function needs under different states of idle and active use, balancing wearing comfort and health practicality.

This utility model discloses a concrete curing device for concrete preparation, belonging to the technical field of concrete curing devices. It includes a liquid storage tank, casters rotatably connected to the bottom of the tank, and a push handle welded to the end face of the tank. A support frame is welded to the end face of the tank, and a spray assembly is installed below the support frame. The tank is filled with liquid water. Construction workers push the tank, and a booster pump pressurizes the liquid water, which is then sprayed onto the concrete surface through a spray pipe and a spray hood at the bottom of an extension pipe, providing excellent curing results. The mounting base and the end of the extension pipe are fixedly connected. Depending on the span of the concrete structure, the extension plate is rotated relative to the support frame, and then the extension bolts are tightened. The insertion end of the extension bolt extends into the threaded groove, thereby adjusting and fixing the angle and position of the extension pipe, increasing its span, and improving curing efficiency during spraying.

The present invention relates to the technical field of bridge maintenance equipment, and specifically discloses a prefabricated box girder maintenance device, including a device body, wherein the device body includes a bearing mechanism and a spraying mechanism, the bearing mechanism is configured as a plurality of groups, and is arranged in an array along the length direction of the box girder, each group of the bearing mechanism includes a first support frame and a second support frame, a first driving component is provided on the bearing mechanism, the first driving component is used to drive the plurality of groups of bearing mechanisms to move along the length direction of the box girder, and to arrange the plurality of groups of bearing mechanisms equidistantly, so that the bearing mechanisms have a storage state and an expanded state, the spraying mechanism is configured as a plurality of groups, each group of the spraying mechanism includes a water pipe and a second driving component, a plurality of nozzles are provided on the water pipe, and the second driving component is used to drive the water pipe to rotate around its own axis to increase the spraying area of ​​the nozzle; the present invention can adapt the device body to the maintenance of box girders of different lengths through the expansion degree of the bearing mechanism, and can improve the maintenance efficiency.

The utility model relates to the technical field of municipal roads and bridges, and discloses a municipal road and bridge spraying device which is characterized in that a sliding groove is formed in a vehicle plate, a sliding block is connected in the sliding groove in a sliding mode, a movable plate is fixedly connected to the side, away from the sliding groove, of the sliding block, and a first rack is fixedly connected to one side of the movable plate; the other side of the moving plate is fixedly connected with a second rack, the second rack is connected with a second half gear in an engaged mode, and the second half gear is fixedly connected to a second connecting column. According to the municipal road bridge spraying device, the driving motor is arranged, the movable plate moves back and forth, then the water storage ring, the plastic water pipe, the connecting pipe and the spraying pipe are driven to move back and forth, the spraying pipe sprays back and forth, the spraying effect of municipal road bridges is better, manual back-and-forth pushing spraying can be avoided, and the portability of the municipal road bridges during spraying can be effectively improved; and dust on the ground can be more fully cleaned during spraying of municipal roads and bridges, so that the dust cleaning effect of the municipal roads and bridges is improved.

The utility model discloses a concrete structure curing device which comprises a frame. The mixing box is arranged at the top of the frame; the stirring assembly is arranged in the mixing box; the stirring assembly comprises a first motor, a rotating rod and a mixing frame; the top of the mixing box is fixedly connected with a first motor; an output shaft of the first motor is fixedly connected with a rotating rod through a coupling; the outer wall of the rotating rod is fixedly connected with a material mixing frame; and the maintenance assembly is arranged at the top of the frame. The concrete structure curing device is provided with a material pump, materials in a material mixing box can be pumped out through a material pumping pipe, curing materials can be conveyed into a spraying pipe through a connecting hose, the materials are evenly sprayed out through a plurality of spraying heads, and in addition, a second motor is arranged to drive a second bevel gear, so that the curing efficiency is improved. And a second bevel gear can drive a first bevel gear to rotate, so that the purpose of adjusting the angle of a spray pipe is achieved, the requirement of uniformly maintaining the pavement can be met, and the maintenance effect on the pavement is improved.

The application discloses a comprehensive concrete curing device and belongs to the field of concrete curing. The curing device comprises a curing chamber and a heat exchanger arranged at one side of the curing chamber. The curing device further comprises an air feeding pipe and an air exhaust pipe connected with the curing chamber respectively. A rotary dehumidifier is arranged between the air exhaust pipe and the heat exchanger. The inlet of the processing area of the rotary dehumidifier is communicated with the air exhaust pipe, the outlet of the processing area is communicated with the first input end of the heat exchanger, and the first output end of the heat exchanger is communicated with the curing chamber through the air feeding pipe. The rotary dehumidifier arranged between the air exhaust pipe and the heat exchanger can effectively remove the moisture in the hot and humid air exhausted from the air exhaust pipe, avoid the rusting and scaling of the internal components of the heat exchanger caused by the moisture entering the heat exchanger, improve the heat exchange efficiency and service life of the heat exchanger, guarantee the stable operation of the hot air circulation system, and further improve the concrete curing effect. Meanwhile, the hot air circulation technology is continuously used to reduce energy consumption and maintain the energy-saving and environment-friendly advantages.

The application belongs to the technical field of commercial display equipment, and discloses a supermarket flower shop display stand, which comprises a stand column, the four sides of the stand column are fixed with display stands, adjacent display stands are connected with placing seats, and the top surface of the placing seat is provided with an extension platform; a ladder platform is arranged in the display stand, the surface of the ladder platform is paved with a water absorption cloth, and a conveying pipe with discharge holes is horizontally arranged above the water absorption cloth; an installation groove is arranged in the lower part of the display stand, a water storage tank, an atomizer and a pressure water pump are arranged in the groove, the atomizer is connected with the water storage tank through a connecting pipe, and the output end is connected with the conveying pipe; the surface of the extension platform and the ladder platform is inlaid with a pressure sensor, the placing state of goods can be monitored, and a reminder can be sent to a management terminal when goods are not replenished in time. The supermarket flower shop display stand has the functions of integrated automatic atomization and moisture retention, reduces the artificial maintenance cost, can receive condensed water to avoid dripping, and has a four-side display layout which is suitable for the supermarket scene, matched lamp strips which can improve the display effect, and high practicability.

The invention provides a precast concrete unit constant-temperature curing device which comprises an upper shell and a lower shell, a first cavity is defined by the upper shell and the lower shell, a humidifying assembly is fixedly connected to the upper shell, a plurality of first open holes are formed in the two side faces of the lower shell, heating rods are fixedly embedded in the first open holes, and a curing base and a curing upper cover are embedded in the first cavity. A second cavity is defined by the curing base and the curing upper cover, the heating rod is used for heating the second cavity, and a temperature adjusting assembly is fixedly connected to the curing upper cover. According to the scheme, the temperature adjusting assembly capable of controlling the heating rod to work or not according to the temperature in the second cavity is arranged on the maintenance upper cover, so that when the temperature in the second cavity is too high, the first contact and the second contact in the temperature adjusting assembly make contact, the heating rod stops working, and when the temperature in the second cavity recovers, the heating rod stops working. And the first contact and the second contact are separated, and the heating rod recovers to work, so that the temperature stability in the second cavity is improved, and the purpose of improving the curing effect is achieved.

The maintenance device for the tunnel comprises a trolley provided with a walking assembly, a side jacking assembly and a jacking assembly, the trolley is provided with a closing assembly, and a closed maintenance space can be formed between the closing assembly and concrete to be maintained. The trolley is provided with an atomization spraying assembly capable of spraying atomized curing steam with a certain temperature into the curing space. And after the trolley moves in place, the side jacking assembly and the jacking assembly work, a closed curing space can be formed between the closing assembly and the to-be-cured concrete, and meanwhile the invention further discloses a curing method for the tunnel. Atomized curing water with a certain temperature is sprayed in a sealed curing space, so that the whole curing effect is the same as that of steam curing, but the steam curing is realized by adopting an atomizing spray head without being heated to a very high temperature or being independently equipped with special equipment, so that compared with the existing steam curing, the steam curing efficiency is greatly improved. And the cost and the energy consumption can be effectively reduced.