66results about How to "Quick Replacement Repair" patented technology

The invention discloses a fabricated RC structure beam-column connection joint convenient to maintain rapidly after an earthquake, and relates to fabricated RC structure connection joints. A column joint pre-buried steel piece is provided with a first connecting bulge, a beam joint pre-buried steel piece is provided with a second connecting bulge, a column end positioning steel plate is installed at the outer end of the first connecting bulge in a matched and buckling mode and fixedly connected through a plurality of pulling-resistant bolts, and a beam end positioning steel plate is installed at the outer end of the second connecting bulge in a matched and buckling mode and fixedly connected through a plurality of pulling-resistant bolts; and a column end lug plate is fixed to the column end positioning steel plate, a beam end lug plate is fixed to the beam end positioning steel plate, the column end lug plate is hinged to the beam end lug plate, one end of each buckling-proof dissipative member is detachably and fixedly connected with the column end positioning steel plate and the first connecting bulge, and the other end of each buckling-proof dissipative member is detachably and fixedly connected with the beam end positioning steel plate and the second connecting bulge. According to the fabricated RC structure beam-column connection joint convenient to maintain rapidly after the earthquake, a good energy-dissipating capacity is achieved, the probability of the situation that a structure is seriously injured is reduced when the earthquake intensity is relatively low, and replacing and maintaining can be conducted rapidly when the earthquake intensity is relatively high.

The invention relates to a high-energy-consumption exposed steel column foot capable of being quickly repaired after an earthquake and a construction and maintenance method thereof. The high-energy-consumption exposed steel column foot comprises a concrete foundation, a mortar cushion, a steel column bottom plate and outer bottom plates which are arranged on the periphery of a steel column, wherein the concrete foundation, the mortar cushion, the steel column bottom plate and the outer bottom plates are arranged from bottom to top. The outer bottom plates are connected with the concrete foundation through angle steel; the top corner and one edge of each piece of angle steel are located on the concrete foundation; one end of each outer bottom plate is connected with the steel column bottomplate, the other end of each outer bottom plate is connected with the other edge of the corresponding angle steel; inner foundation anchor bolts penetrate through the steel column bottom plate and themortar cushion to be pre-embedded into the concrete foundation; and outer foundation anchor bolts penetrate through the angle steel to be pre-embedded into the concrete foundation. The high-energy-consumption exposed steel column foot capable of being quickly repaired after the earthquake has good earthquake-resistant performance and energy consumption capability, and the quick repairing capability, is easy to construct, controllable in damage, high in energy consumption capability and capable of reducing structural damage under the earthquake effect, and has high engineering application value.

The invention provides an anti-crack-type hinged tunnel used for crossing a movable fault zone and application thereof. The tunnel structure comprises a primary lining, section inner linings and annular flexible hinges between the adjacent section inner linings, and the annular flexible hinges are arranged at different intervals in a fault broken zone section and a fault broken zone affected section. Prestress steel bars are annularly arranged in the section inner linings of the tunnel, the annular flexible hinges are composed of corrugated steel pipes, rubber cushion layers, steel bar nets and flexible anti-crack concrete layers from the inner wall of a tunnel lining outwards. The corrugated steel pipes and the section inner linings are connected through the prestress steel bars. The tunnel waterproof effect is ensured through multi-layer waterproof measures, and PVC waterproof plates, geomembranes and back-attached-type water stop straps are included. An ultrahigh-toughness cement-based composite material is selected for the flexible anti-crack concrete layers and has good anti-permeability and durability. A diastrophism quantity generated by a movable fault is met, the safety ofthe tunnel crossing the movable fault is ensured, local damage to the annular flexible hinges is easy to rapidly repair, and the normal using function of the tunnel can be ensured after diastrophismof the movable fault.

The invention discloses a high-strength steel column-common steel beam steel brace-low-yield-point steel coupling beam restorable structure which comprises a low-yield-point steel coupling beam, a common steel brace, a common steel framed beam and a high-strength steel framed column, wherein one end of the low-and-medium-yield-point steel coupling beam in each layer is connected with the common steel framed beam, the other end of the low-and-medium-yield-point steel coupling beam is connected with another common steel framed beam or the high-strength steel framed column; the upper end of the common steel brace is connected with the end part of the common steel framed beam, the lower end of the common steel brace is connected with a connecting node of another common steel framed beam or themiddle part of another high-strength steel framed beam; and one end of the common steel framed beam is connected with the low-yield-point steel coupling beam, and the other end of the common steel framed beam is connected with high-strength steel framed column or another low-yield-point steel coupling beam. The high-strength steel column-common steel beam steel brace-low-yield-point steel coupling beam restorable structure not only can meet the rigidity and strength demand of the structure, but also can effectively ensure that a gradient energy dissipation mechanism with good ductility is formed under the geological process, and the antiseismic performance and function restorability of the overall structure system can be greatly improved.

The invention relates to a heating furnace structure. The heating furnace structure comprises a furnace body with an opening formed in the lower portion and a furnace pipe assembly penetrating through the furnace body from bottom to top. The furnace body is arranged on a heating installation platform of a box chamber. The furnace pipe assembly comprises a furnace pipe and a lifting furnace platform arranged in the furnace pipe. A furnace pipe flange is arranged on the periphery of the lower portion of the furnace pipe. The upper end of the furnace pipe flange is tightly matched with the bottom of the furnace body. The lower end of the furnace pipe flange is connected with a furnace door flange located on the box chamber. The bottom of the furnace platform is tightly matched with the furnace door flange. A furnace pipe sealing ring is arranged between the furnace pipe flange and the furnace door flange. A furnace mouth sealing ring is arranged between the furnace door flange and the furnace platform. By means of the heating furnace structure, materials can be heated in a closed environment, and an adverse effect of toxic or radioactive diffusion on the environment is avoided. Quick cooling can be achieved after heating, and work efficiency is improved; parts can be quickly overhauled and replaced, and time is saved.

The invention relates to a using method for a bag type dust collector. After entering an inlet of the dust collector, gas downwards enters a tapered body, the dust is subjected to preliminary centrifugal separation, and then the gas subjected to preliminary centrifugal separation enters the above filter bag to perform secondary separation; during dust removal, an intermittent gas supply source is used for supplying intermittent gas to a gas filling tube through an intermittent gas inlet (7); under the action of the intermittent gas, the gas filling tube keeps intermittent deformation change to drive the filter bag to vibrate to realize dust removal. According to the using method for the bag type dust collector disclosed by the invention, the impact effect of the pulse-gas dust removal to the filter bag in the prior art can be effectively avoided, and the service life of the filter bag is prolonged.

The invention relates to a bag type dust collector. The bag type dust collector comprises a dust collector inlet (1), a dust collector outlet (13), a gas distributing plate (6), a gas filling plate upper board (8), a gas filling plate lower board (9), a gas filling head (10), a plurality of gas filling tubes (11) and a filter bag (12). The gas filling tubes (11) with equal length are connected to a gas filling opening (21) in a sealing mode, so that the uniformly-distributed gas filling tubes (11) form a bag cage; the filter bag sleeves the bag cage. The bag type dust collector is simple in structure, the impact effect of pulse-gas dust collection to the filter bag in the prior art is avoided, and the service life of the filter bag is prolonged.

The invention relates to the technical field of injection molds, and discloses an efficient cooling device for an injection mold. The efficient cooling device for the injection mold comprises an installing plate, a fixed mold and a movable mold; the upper end of the installing plate is connected with the movable mold through a lifting device and provided with an installing groove matched with thefixed mold, and two adjusting mechanisms are symmetrically connected to the upper end of the installing plate and connected with the left side and the right side of the fixed mold correspondingly; a water outlet pipe is fixedly connected to the left side of the installing groove through a circular hole, and a connecting pipe is fixedly connected to the right side of the installing groove through an installing hole; and a water tank is fixedly connected to the left side of the installing plate, a water pump is fixedly connected to the interior of the water tank, a right-end pipe port of the connecting pipe penetrates through the side wall of the water tank and extends into the water tank, and the left side of the lower end of the water tank communicates with a water inlet pipe. According tothe efficient cooling device for the injection mold, contact cooling can be directly conducted on cooling oil and the mold, cooling is quick and uniform, and the mold cooling speed can be adjusted according to the environment temperature.

The invention discloses an assembly type decoration panel convenient to disassemble, and relates to the technical field of decoration panels. The assembly type decoration panel comprises a first mounting plate, a second mounting plate, a decoration plate and a connecting block, wherein the two mounting plates are connected through the connecting block; two symmetrically-arranged clamping columns are slidably connected to the front end face of the first mounting plate; one of the ends of the clamping columns extends into the first mounting plate and is fixedly connected with a top block; extrusion springs are arranged on the inner side wall of the first mounting plate; the two ends of the extrusion springs are connected with the side walls of the top blocks and the inner side wall of the first mounting plate respectively; grooves are formed in the other ends of the clamping columns and extend into the decoration plate; extrusion blocks are slidably connected in the grooves; sliding blocks are slidably connected to the upper surface and the lower surface of the decoration plate; sliding grooves are formed in the upper surface of the decoration plate; the sliding blocks extend into the sliding grooves; the extrusion blocks extend into the sliding grooves and are slidably connected with the sliding grooves; and telescopic springs are arranged in the grooves. According to the assembly type decoration panel, the problem that an existing decoration panel is difficult to disassemble and assemble is solved.

The invention discloses a real-time monitoring device and an operation determination method for a hob status during shield construction. A laser monitoring method is introduced into a cutter head system during shield construction, and related data such as tool wear can be effectively monitored by laser measurement feedback, which not only solves the problem of hob running status monitoring duringthe construction process, but also effectively avoids the disadvantages such as impact wear of the rock slag on the sensor during the construction process. In order to avoid the dirt, oil and other stains from adhering to the lens during the operation, resulting in affecting the sensitivity and accuracy of the laser sensor detection, the sealing strips on the protective lens and the protective device can move relative to one another to scrape off the stains on the protective lens and ensure the cleanness of the lens. The operation determination method for the hob status collects the hob wear data through the hob operation data monitoring device, analyzes the operation status of the hob, determines that the hob is in a normal status such as regular wear, or in an abnormal status, such as side grinding, chipping and jamming, finds the abnormal status of the hob in time, and carries out quick replacement and repair.

An inner hole sleeve pulling device comprises a cylindrical pulling base. The axis of the pulling base is in the longitudinal and horizontal directions, a cylindrical cavity is arranged in the middle of the front end surface of the pulling base, the outer side wall of the pulling base is fixedly connected to the inner ends of a plurality of pulling plates, the pulling plate are distributed on the circumference of the pulling base in a surrounded manner, the surface of each pulling plate extends outwardly and radially, and pulling bolts are rotationally installed on the surfaces of the pulling plates in the longitudinal and horizontal directions; a round press cover is fixed to the front end surface of the pulling base, a plurality of guide grooves are radially formed in the rear end surface of the press cover and are distributed surrounding the circumference of the press cover evenly, and limiting rods are arranged in the middle of the guide grooves in the longitudinal and horizontal directions and are fixed to the front end surface of the pulling base. According to the device, a liner, a sealing sleeve and a bearing outer ring in a blind hole can be disassembled efficiently and rapidly, and the relevant parts are prevented from damage.

The invention discloses a novel split type heating device for fiber splicer and the fiber splicer. The novel split type heating device for the fiber splicer comprises a circuit board, a first heating sheet and a second heating sheet. The first heating sheet and the second heating sheet are mounted on the circuit board to be used for the heat contraction of the sleeving pipes and the two heating sheets are independent from each other. The two ends of the circuit board in the length direction are provided with positioning fastener sheets to have the two ends of the first heating sheet and the second heating sheet fixedly arranged on the circuit board at the same time. The outer side faces of the first heating sheet and the second heating sheet are further provided with heating resistors for the heat contraction of the sleeving pipes wherein the resistance values of the heating resistors are large in the middle but small at two sides. In addition, the fiber splicer of the invention comprises the novel split type heating device. Compared with the prior art, the heating device of the invention has a simple structure, costs less to manufacture and maintain, can be replaced and maintained conveniently and provides safe and reliable performances.

The invention discloses a portable foundation pit monitoring device. The device comprises a protection tube formed by connecting a plurality of protection sub-tubes by connectors, wherein at least twocentralizers are fixed on the outer wall of each protection sub-tube, guide rails are arranged on the inner walls of the protection sub-tubes, and a monitoring module is arranged in at least one of the protection sub-tubes and sleeves the guide rails in a sliding manner; limit structures are arranged between the inner walls of the protection sub-tubes and the corresponding monitoring modules; thenumber and the position of the monitoring modules arranged in the protection tube and the number and the position of the centralizers are defined by users; the monitoring modules transmit monitoringdata through a data transmitter. The monitoring modules are designed in a modular manner, the users can increase or decrease the number of the monitoring modules in the designated area, the number ofthe monitoring modules can be properly increased or decreased according to monitoring requirements, and thus, the cost is reduced, and measurement accuracy is improved.

The invention belongs to the technical field of seismic resistance of building engineering, and provides an assembled steel column base with controllable damage. The steel column base includes a steelfoundation, an anchor bolt, a steel column bottom plate, energy absorbers and a steel column. On the premise of ensuring the bearing capacity and the rigidity of an exposed steel column base, the assembled exposed steel column base with controllable damage and quick replacement of the energy absorbers is provided by arranging the energy absorbers. The steel column base of the invention has the advantages of strong energy consumption capacity and controllable damage, can control the damage to exposed parts which can be easily repaired and replaced such as the energy absorbers and can improve the repairing capacity of the column base after an earthquake. After the earthquake, the energy absorbers can be quickly replaced to realize local quick repair. The column base has the advantages of easy construction, strong energy dissipation capacity in the earthquake and controllable damage and can be quickly repaired.

The invention provides an adjustable inclined sand screening device for constructional engineering site construction. The device comprises a blowing sand fixing plate, a sand screening net and a finesand outflow plate, the bottom of the device body is arranged as a movable fixing platform, the blowing sand fixing plate is rotationally installed on the inner side of the top end of a supporting column, a secondary sand screening device is arranged on the upper side face of the blowing sand fixing plate, the sand screening net is fixed to the upper side of the blowing sand fixing plate through abolt, the fine sand outflow plate is arranged on the bottom side face of the blowing sand fixing plate, the bottom end of the blowing sand fixing plate is provided with a blowing sand angle adjustingdevice, and the bottom end of the blowing sand fixing plate is supported on the upper side face of the movable fixing platform through the blowing sand plate angle adjusting device. The adjustable inclined sand screening device for constructional engineering site construction is provided with the sand screening net which is detachably arranged, accordingly, the sand screening net can be rapidly replaced and repaired when damaged, and can be replaced according to the sand thickness degree, and the using effect of the device body is effectively improved.

The invention discloses a permanent magnet motor for a new energy automobile. The permanent magnet motor comprises a lower box body and an upper box body, wherein the bottom of the upper box body is movably connected with the top of the lower box body, the inner cavity of the lower box body is fixedly connected with a bearing plate, the surface of the bearing plate is fixedly connected with a motor body, and the inner cavity of the motor body is rotatably connected with an output shaft. The invention relates to the technical field of permanent magnet motors. According to the invention, duringwork, the output shaft rotates and drives the disc to rotate at the same time, the disc drives the air suction groove and the flow guiding plate to rotate so as to form vortex flow, external air is pumped into the air suction groove along the air suction groove and is filtered by the first filter screen, the filtered air is introduced into the lower box body and the upper box body along the annular groove, the hot air in the upper box body and the lower box body is exhausted along the air inlet groove, and air exchange is performed, so that air exchange treatment can be performed while working, the balance between the temperature in the box bodies and the outside can be kept, the motor body is prevented from working at high temperature for a long time, and the motor body does not need to be driven by an additional power source.

The invention discloses a rice screening device with a dustproof function, and relates to the technical field of rice production. The rice screening device with the dustproof function comprises a base, a screening box is arranged above the base, a dust removal box and an air inlet box are fixedly installed on the outer walls of the two sides of the screening box correspondingly, a dust discharging opening is formed in the bottom of the dust removal box, vent holes are formed in the outer walls of the two sides of the screening box correspondingly and communicate with an inner cavity of the dust removal box and an inner cavity of the air inlet box correspondingly, and a shaking mechanism is arranged on the top of the base. According to the rice screening device with the dustproof function, dust generated in the screening process can be sucked through a dust suction mechanism, air can be filtered, the influence of the dust on the respiratory tract of an operator is reduced, and the body health of the operator is improved. Dust accumulated on a dust removal net can be swept and removed through a dust cleaning mechanism, and the situation that the dust removal net is blocked by too much accumulated dust, and the dust removal efficiency of the dust suction mechanism is affected is avoided.

The invention discloses a multi-stage telescopic mechanism for carrying glass in liquid crystal glass substrate production. The multi-stage telescopic mechanism comprises a first-stage telescopic support arm assembly, an end part fixed connecting arm frame rod is fixedly arranged at one end of the first-stage telescopic support arm assembly, and a second-stage telescopic support arm assembly is telescopically arranged in the first-stage telescopic support arm assembly. A third-stage telescopic support arm assembly is telescopically arranged in the second-stage telescopic support arm assembly.A U-shaped second-stage telescopic support arm frame plate telescopically moves in a U-shaped first-stage telescopic support arm frame plate through left-right reciprocating movement of an inner threaded pipe on a threaded rod, and when the U-shaped second-stage telescopic support arm frame plate telescopically moves in the U-shaped first-stage telescopic support arm frame plate, a plate body of arectangular tertiary telescopic support arm frame plate telescopically moves in the U-shaped second-stage telescopic support arm frame plate through the matching of a rotating gear, a first-stage rack plate and a third-stage rack plate.

The invention discloses high-performance and safe urban comprehensive corridor power distribution equipment, which comprises a power distribution cabinet body, a first mounting frame and a second mounting frame are sequentially arranged in an inner cavity of the power distribution cabinet body from front to back, and mounting plates are fixedly connected to inner cavities of the first mounting frame and the second mounting frame from top to bottom in sequence. Wire holders are sequentially arranged on the surface of the mounting plate from left to right, an adjusting mechanism matched with the first mounting frame and the second mounting frame for use is arranged on the rear side of the inner cavity of the power distribution cabinet body, and an electric push rod provides a driving source through the adjusting mechanism; through cooperation of a limiting sliding groove, a limiting sliding frame, a push-pull rod, an auxiliary sliding groove, an auxiliary sliding block and a connecting rod, when internal parts of the power distribution cabinet body are damaged and broken down, the first mounting frame and the second mounting frame are synchronously expanded and adjusted outwards, the maintenance work space between the first mounting frame and the second mounting frame is expanded, and the maintenance efficiency is improved. Therefore, maintenance personnel can quickly maintain and replace the internal parts of the power distribution cabinet body.

The invention discloses a permanent magnet variable frequency shield pump. The permanent magnet variable frequency shield pump comprises a pump body, an impeller, a magnetoelectric driver, an isolation assembly and a frequency converter; the magnetoelectric driver comprises a casing, a stator assembly and a rotor assembly (a central shaft, a rotor, a magnetic shielding layer and a permanent magnet); the isolation assembly is provided with a rotor sheath sleeving the outside of the permanent magnet, an isolation sheath sleeving the outside of the rotor sheath, and a front separator plate and asealing rear plate which correspondingly block two ends of the isolation sheath, the isolation sheath is fixedly connected with the front separator plate and abuts against the sealing rear plate, thefront separator plate is detachably connected with the casing, a second end of the isolation sheath is sleeved with an isolation sleeve sizing block, and an annular sealing gasket is arranged betweenthe sealing rear plate and the inner wall of the isolation sheath; and a liquid passing gap is arranged between the rotor sheath and the isolation sheath, a liquid passing channel is arranged on the central shaft, and a pump cavity, the liquid passing channel and the liquid passing gap communicate with one another. The permanent magnet variable frequency shield pump can adjust the output torque and the output frequency, and is energy-saving, efficient and environment-friendly; and the permanent magnet variable frequency shield pump is of a detachable structure and is easy to disassemble and maintain; and full sealing is achieved, and leakage is avoided.

The invention relates to a heating furnace comprising a furnace shell with a lower opening and a furnace pipe assembly arranged in the furnace shell in a penetrating manner. The furnace pipe assembly comprises a furnace pipe and a furnace table arranged in the furnace pipe and capable of ascending and descending; the position between the periphery of the lower portion of the furnace pipe and the bottom of the furnace shell is sealed through a lower sealing assembly; the upper portion of the furnace pipe is provided with a furnace pipe top connection pipe; the position between the periphery of the furnace pipe top connection pipe and a top plate of the furnace shell is sealed through an upper sealing assembly; and a plurality of heating elements inserted from the top of the furnace shell are arranged between the inner wall of the furnace shell and the furnace pipe. The heating furnace can heat radioactive materials in a closed environment and can utilize the rest of heating bodies to continue to complete heating under the condition that part of heating bodies lose efficacy; in a weak sealing link, a structure capable of performing double sealing and pressure detection is designed, and sealing reliability is improved; after heating ends, forced cooling can be performed, cooling time is saved, and the production efficiency is improved; and a modular structure is adopted, gradation is distinct, fast overhaul and replacement of parts are achieved, and time is saved.

The invention provides a handle fixing device with adjustable posture, which enables the user to change the spatial posture of a handle at multiple degrees of freedom relative to the initial setting under the constraints of sitting posture, habits, spatial restrictions and other conditions, so as to achieve good operation experience. The device is mainly composed of three parts: pitch attitude adjustment, azimuth and altitude attitude adjustment and a quick dismantling structure. The pitch attitude adjustment assembly is located at the top of the device, can be equipped with two handles at most, and can support synchronous or relatively independent pitch adjustment of the two handles. The azimuth attitude adjustment and the altitude attitude adjustment are realized by a same device locatedat the bottom of the device, and the azimuth and altitude attitude adjustment device can be linked to the pitch attitude adjustment assembly for movement and can also be relatively and independentlyfixed. The quick dismantling structure is located in the middle of the device, and enables the user to store the handles and a carrier platform separately and to quickly reassemble the device in caseof emergency. The device of the invention has the characteristics of convenient operation, rich adjustment selection, strong space adaptability and maintainability, and the like.

The invention discloses a management method based on steelmaking continuous casting production management optimization. A cutting supporting frame is placed on one side of an air cooling box, a fixedconnecting rod is welded to the bottom end of a movable mounting block, a concave connecting block is welded to the bottom end of the fixed connecting rod, and a cutting fixing plate is embedded intothe bottom end of the concave connecting block; and the cutting fixing plate and the concave connecting block are connected through a clamping pin, a cutting threaded pipe is welded to the bottom endof the cutting fixing plate, a cutting gun is rotatably clamped to the bottom end of the cutting threaded pipe, a fixed protection ring is welded to one end of the cutting threaded pipe, and a movableprotection ring is hinged to one end of the fixed protection ring. By separating the concave connecting block from the cutting fixing plate, a worker can conveniently and rapidly replace the cuttingthreaded pipe, by separating an air pipe from the cutting gun, the cutting gun can be quickly replaced when needing to be replaced, meanwhile, a pipeline and the surface of the cutting gun are protected through the protection rings, the replacement frequency of is reduced, and the production effect and efficiency are guaranteed.

The invention discloses a standardized service terminal based on sewage discharge, which comprises a processor, the input end of the processor is electrically connected with a flow velocity sensing module, the input end of the processor is electrically connected with a monitoring module, and the input end of the processor is electrically connected with a turbidity sensing module. The input end of the processor is electrically connected with a first preprocessor. The flow velocity sensing module, the monitoring module, the turbidity sensing module, the sewage collection module, the water quality detection unit and the preprocessor are used for detecting and collecting the water quality of sewage, then the environment detection unit is used for detecting and collecting the air quality at a sewage discharge position, and finally the processor is used for displaying data through the display module and the operation module. Therefore, the standardized service terminal has the advantage of automatic detection and display, and solves the problems of low automation degree, low collection and detection efficiency and high data collection difficulty caused by manual collection and detection when treated sewage is discharged.

The invention relates to notebook computer battery elements which comprises a basic plate and dual batteries. Wherein, the batteries are fixed on the basic plate via the covering sheath and connected to the plugs via the battery connector; the battery connector is connected electrically to the battery, while it comprises a fuse plug; the fuse plug comprises two connection points which are insulated to each other; the switch between two connection points depends on the electrical connection between the battery and the battery plug, when the fuse is inserted into the fuse plug, the fuse connects two connection points, the battery is electrically connected to relative plug on the notebook computer, and when the fuse leaves the fuse plug, the connection points are unconnected to cutoff the computer.

The invention provides an antifreeze and drainage device for mine shafts. The antifreeze and drainage device for mine shafts includes: a device body, which is in the shape of a "U" tube. One nozzle is provided with a water outlet; two heaters, the two heaters are respectively arranged in the two nozzles of the device body, and are fixed to the device body through a fastening device and a connecting device, wherein the two heaters The heaters are respectively connected with the control switch, and the switch controls the two heaters to heat the feed water in the device body. It has a simplified structure and is easy to realize, and can replace the underground artificial ice-breaking method to control the water freezing, and realize rapid and continuous treatment. Significantly reduce labor intensity, improve the underground construction environment, and ensure construction safety.

The invention discloses a heating furnace with stable performance. The heating furnace comprises a furnace body, wherein a shell is arranged on the outer side of the furnace body, a furnace cover is arranged on the upper portion of the shell, a third flange is arranged on the lower portion of the shell, a filling cavity is formed between the furnace body and the shell, a heat preservation filler is arranged in the filling cavity, a furnace pipe assembly is arranged in the furnace body, a heating element is arranged between the furnace body and the furnace pipe assembly, a box body is arrangedon the lower portion of the furnace body, the furnace pipe assembly comprises a furnace pipe, a coil base is arranged in the furnace pipe, a first flange is arranged on the lower portion of the furnace pipe, a second flange is arranged on the box body, a furnace pipe sealing ring is arranged between the first flange and the second flange, and a furnace mouth sealing ring is arranged between the second flange and the coil base. The heating furnace is simple in structure and high in furnace body stability, can heat materials in a closed environment, protects the environment, can achieve rapid cooling after heating, and improves the working efficiency.