130 results about "Porous pipe" patented technology

The invention belongs to the technical field of hydrogen production, and particularly relates to a double-tank metal hydride hydrogen purification device which comprises a first tank body, a second tank body, a primary exhaust pipe, a gas communicating pipe, a first liquid passing bathroom, a second liquid passing bathroom, a circulating liquid bath chamber and a liquid communicating pipe. A first perforated pipe and a first metal hydride are arranged in the first tank body; and a second perforated pipe and a second metal hydride are arranged in the second tank body. The primary exhaust pipe is communicated with the first perforated pipe, and the gas communication pipe is communicated with the primary exhaust pipe and the second perforated pipe. And the first tank body and the second tank body are coated with the first liquid passing bathroom and the second liquid passing bathroom respectively. And the first liquid passing bathroom, the circulating liquid bath chamber, the second liquid passing bathroom and the liquid communicating pipe are communicated in sequence to form a liquid pipeline. Through the design of the circulating liquid bath chamber and the liquid communicating pipe, the hydrogen absorption and heat release process and the hydrogen desorption and heat absorption process are mutually compensated, the heat utilization efficiency is improved, the external heating and cooling requirements are reduced, and the energy consumption in the hydrogen purification process is reduced.

A composite capsule-based control apparatus and method for actively controlling soil deformation, comprising deformation bodies (2), a porous pipeline, a sealing cover and a medium injection control system. The deformation bodies (2) are connected by means of a sawtooth interface (3), and connecting portions are provided with pores. A deformation body (2) has two states: for use in laying new embankments, both sides are folded inward along an edge to ultimately form a rectangular flat shape, and multiple deformation bodies (2) are arranged in sequence along the longitudinal direction of an embankment; for operational repair implantation, bundled deformation bodies (2) that are initially cylindrical are implanted into reserved holes. The sealing cover is used to seal reserved holes on the embankment after the deformation bodies (2) are laid on a new embankment, to ensure that the outer appearance is the same as the embankment slope. The medium injection control system is used to monitor and control the injection of a medium. The porous pipeline has a single inlet and multiple outlets, the inlet of the porous pipeline being connected to a medium injection pipe (1), and the porous pipeline being uniformly disposed within the deformation bodies (2), to achieve uniform medium injection and ensure that lifting force remains stable during a control process.

The invention relates to the technical field of cone valve multi-mode air supply-energy dissipation cooperative cavitation reduction devices and control methods, and discloses a fluid control device named'cone valve multi-mode air supply-energy dissipation cooperative cavitation reduction devices and control methods'. The conical valve aims to solve the problems that an existing conical valve is serious in cavitation under the working condition of high pressure difference, air supply and energy dissipation functions are separated, and response lags. The device is characterized by comprising three stages of energy dissipation perforated pipes which are arranged at the outlet end of a valve body in a gradient mode, negative pressure injection air supply pipes which are symmetrically arranged outside a flow guide cover and flow guide fins which are welded to the inner wall of a cone, and the three stages of energy dissipation perforated pipes, the negative pressure injection air supply pipes and the flow guide fins cooperate to achieve pressure gradient pressure relief, self-adaptive air supply and flow state stability; the control method dynamically adjusts the air supply intensity based on the opening degree, the pressure difference and the vibration signal. According to the technical scheme, cavitation inception and collapse impact are remarkably restrained, vibration noise is reduced, the service life of the valve is prolonged, an external air source is not needed, the system pressure drop is controllable, and the system is suitable for ultrahigh pressure difference and large-flow hydroelectric working conditions.

The invention provides an anti-waterlogging drainage structure for a village in city low-lying area. The anti-waterlogging drainage structure comprises a porous permeable drainage layer and a water storage permeation unit. The surface of the porous water-permeable drainage layer is in a micro-slope design, and a porous pipeline is embedded in the porous water-permeable drainage layer, can be arranged in the slope direction or in the direction perpendicular to the slope direction and is connected to an external drainage system. The water storage permeation unit comprises an upper permeation area and a lower water storage area, and the upper permeation area is filled with sandy soil and permeable vegetation and used for slowing down the flow velocity of rainwater and filtering impurities. The lower layer water storage area is provided with a hollow structure, and the hollow structure is connected with an external irrigation system and used for storing and recycling rainwater. According to the anti-waterlogging drainage structure for the village in city low-lying area, the pressure of a drainage system can be remarkably reduced under the rainstorm condition, meanwhile, a water source is provided for follow-up irrigation, and compared with a traditional single drainage or water storage structure, the higher comprehensive management efficiency is achieved, and the higher rainwater storage and staged treatment capacity is achieved.

SOLUTION: A method includes steps of: performing MJS cavity filling reinforcement for soil under the floor of an existing station; setting a required cutter head using hob cutter data obtained from an analysis, and setting tunneling parameters of a shield machine cutting in a stratum based on the tunneling parameters of a shield machine cutting in the air; performing secondary grout injection when cutting the diaphragm wall, in addition to synchronous grout injection and secondary grout injection; observing vertical displacement of a station ballast bed, vertical and horizontal displacement of a station side wall, and vertical displacement of a tunnel vault, and adjusting push speed and silo pressure in real time; performing secondary grout injection for segments within 10 rings from a door of a receiving shaft of a newly built station; and injecting grout from grout injection holes of porous segments after the shield machine has passed through.EFFECT: The present invention saves manpower and ensures the safety of an existing station structure above.SELECTED DRAWING: Figure 1

The invention relates to the technical field of hollow fiber membranes, and discloses a preparation method of a dynamic MBR (membrane bioreactor) hollow fiber membrane component, which comprises the following steps: hollowly connecting an impeller framework with a rim pipe by using a connector to obtain an impeller type membrane component; a plurality of hollow fibers are cast into hollow fiber bundles, one ends of the hollow fiber bundles are cast on the reserved opening of the porous pipe sleeve of the impeller framework, the other ends of the hollow fiber bundles are bundled and cast on the hollow rim, and a blade type hollow fiber membrane assembly is prepared; connecting a hollow rim of the blade type hollow fiber membrane module with a rim pipe of the impeller type membrane module to obtain a dynamic MBR hollow fiber membrane assembly; arranging a plurality of dynamic MBR hollow fiber membrane assemblies on a water guide pipe, and connecting in series to form a wheel row; and arranging a plurality of wheel rows in a staggered manner to complete the preparation of the dynamic MBR hollow fiber membrane module. The invention can solve the problems of low packing density of the existing rotary membrane component and easy blockage and pollution of the root of the existing curtain type membrane component, and greatly prolongs the service life of the membrane.

The invention relates to a sorption module for CO2 sorption, comprising: - a porous and tubular sorbent, for sorbing CO2 in a first state, and for desorbing sorbed CO2 from the sorbent in a second state; - a first and a second support, connected to and supporting the sorbent at opposing spaced apart ends of the sorbent, supporting a central part of the sorbent extending between the first and second support through respective end parts of the sorbent abutting against the first and second support, wherein the central part of the sorbent is suspended between, and only supported through, the opposing spaced apart ends of the sorbent which sorption module is configured for allowing a gaseous composition comprising CO2, such as ambient air, to flow between an interior and an exterior through the tubular sorbent.

The invention relates to a preparation method of an internal thread of a low-density heat-proof material. The method comprises the following steps: processing a threaded hole bottom hole in the low-density heat-proof material layer; a bottom hole seepage pipe with a porous pipe wall is installed in a bottom hole of the threaded hole, and then structure reinforced resin is injected into the bottom hole seepage pipe and permeates into the low-density heat-proof material layer through the porous pipe wall of the bottom hole seepage pipe; curing the treated low-density heat-proof material layer, and tapping a heat-proof layer thread in the bottom hole of the threaded hole by adopting a tapping device; a threaded seepage pipe with a porous pipe wall is installed in a bottom hole of the threaded hole, then structure reinforcing resin is injected into the threaded seepage pipe and permeates into threads of the heat-proof layer threads through the porous pipe wall of the threaded seepage pipe, and then curing and thread finishing are conducted, so that preparation of the low-density heat-proof material internal threads is completed. The defects that the low-density heat-proof material is low in strength and effective threads cannot be formed are overcome, and the purpose of threaded connection of the low-density heat-proof material is achieved.

The application provides a concentrated brine interface evaporation device for anti-salt crystallization, comprising a photothermal evaporation unit, the photothermal evaporation unit comprises a hydrophilic hollow porous tube and a photothermal material layer coated on the outside of the hydrophilic hollow porous tube, the hollow axial direction and the diameter direction of the hydrophilic hollow porous tube form a three-dimensional multi-directional evaporation channel, on the one hand, the photothermal evaporation rate is improved, on the other hand, the salt ions in the photothermal material layer are quickly exchanged through the convection effect, and then flow into the inner layer low-concentration water, so that the photothermal layer is prevented from appearing salt crystallization. The inner layer and the peripheral wall of the hydrophilic hollow porous tube are formed with a porous structure through the hydrophilic hollow porous tube, the convection effect of the liquid in the hollow tube is enhanced, the evaporation amount of the device is evenly distributed to the surrounding through the three-dimensional structure design, the concentration of the evaporation surface is prevented from being too high, and the synergistic effect makes the device effectively inhibit the crystallization of salt in the device during the evaporation process.

The utility model discloses a farmland liquid level meter which comprises a perforated pipe, a vertical rod, a water filtering layer, a waterproof shell, a liquid level sensor, an acquisition communication module, a water guide strip and a power supply system. A sealing cover is arranged at the bottom of the perforated pipe, more than one hole is uniformly distributed on the pipe body, and the water filtering layer is wrapped outside the perforated pipe; the top of the perforated pipe is connected with the vertical rod, the top of the vertical rod penetrates through the waterproof shell, the collection communication module is installed in the waterproof shell, the power supply system supplies power to the liquid level sensor and the collection communication module, the number of the water guide strips is at least one, and the water guide strips are fixed to the outer side of the water filtering layer. The field liquid level monitoring device has the advantages of being energy-saving, small and exquisite and convenient to install, can be installed on a ridge of a farmland, and can accurately monitor the field liquid level while the operation of an agricultural machine is not influenced.

An air inlet assembly comprises a shell, an air inlet pipe, a perforated pipe and a partition plate. The shell is provided with an air inlet cavity and comprises an end cover and a circumferential wall. The air inlet pipe at least partially protrudes out of the end cover, and the air inlet pipe comprises a first opening part, a second opening part and an air inlet channel. The perforated pipe is provided with an inner cavity communicated with the air inlet channel and at least one hole communicated with the inner cavity and the air inlet cavity. The partition plate is fixed in the air inlet pipe so as to divide the air inlet channel into a first air inlet channel and a second air inlet channel. When tail gas flows in, the tail gas can flow into the first gas inlet channel and the second gas inlet channel in a layered mode, on one hand, excessive impact of the tail gas on a local area is reduced, and durability can be improved; and on the other hand, the tail gas flowing in a layered manner is beneficial to reducing the back pressure.

The utility model discloses a kind of automobile parts cleaning device, including support frame, support frame is fixed cleaning tank and water receiving tank, first support plate is equipped in cleaning tank, and its upper portion is connected second support plate through support column, and second support plate is equipped support rod and pneumatic clamp. Pump machine and driving motor are installed on support frame, and pump machine inlet end is connected water tank, and outlet is connected porous pipe and spray pipe on first support plate through first distribution pipe, second distribution pipe. Drainage hopper is equipped in the bottom of cleaning tank, and water tank is connected by drainpipe on hopper, and top is connected cover plate by pneumatic push rod. The device is targeted cleaning by porous pipe and spray pipe, realizes water recycling, and part is fixed stable, convenient to operate, suitable for a variety of automobile parts cleaning.

The utility model belongs to the technical field of polycaprolactam polymerization production, and particularly relates to a filter in an extraction tower and a filter system in the extraction tower used for polycaprolactam production and applying the filter. The filter in the extraction tower comprises a tubular filter screen, the tubular filter screen comprises a non-porous pipe and a filter outer pipe which are coaxially arranged inside and outside, filter holes are densely distributed in the pipe wall of the filter outer pipe, the pipe wall of the non-porous pipe is smooth and non-porous, one end of the filter outer pipe is gradually reduced to form a necking opening, and the end part of the non-porous pipe is fixedly connected with the necking opening of the filter outer pipe; and the height of the non-porous pipe is lower than that of the filtering outer pipe. The extraction tower inner filtering system comprises an extraction tower, an extraction tower inner filter is mounted on a filtering mounting pipeline of the extraction tower, and a necking opening of a filtering outer pipe is communicated with an overflow pipeline. According to the utility model, the siphonic effect is effectively reduced, the blockage of the filter is reduced, the frequent cleaning caused by the blockage of the filter is avoided, the shutdown time of an extraction procedure is reduced, and the production efficiency is improved.

The crude adipic acid thickening device provided in this embodiment of the invention features a central tube and a first porous tube that can move relative to each other. When blowing away the solid portion of the crude adipic acid slurry adhering to the outer filter screen, the central tube and the first porous tube are initially in a closed position. In this state, high-pressure gas cannot escape and remains inside the central tube, causing the pressure inside the central tube to continuously increase until a preset value is reached. Then, the central tube and the first porous tube move from the closed position to the open position. At this time, high-pressure gas is simultaneously and instantaneously released from various points on the first porous tube, blowing away the solid portion of crude adipic acid adhering to the outer filter screen. Compared to direct backflushing of high-pressure gas without accumulation, this embodiment of the invention achieves higher gas pressure inside the central tube. Furthermore, because multiple filter holes on the first porous tube open simultaneously, the pressure of the emitted gas is more uniform, resulting in a better blowing effect.

The invention relates to the field of gas-liquid uniform mixing equipment, and discloses a gas-liquid uniform mixing device for a multiphase multiphase pump, which comprises an outer shell sleeve, an outer shell and an inner shell, the outer shell sleeve is arranged on the outer wall of the upper end of the outer shell, the inner shell is coaxially arranged in the outer shell, the outer shell is provided with a baffle plate, the inner wall of the outer shell is provided with a guide plate, and the middle part of the lower end of the outer shell is provided with an extension pipe. A perforated pipe is arranged on the outer wall of the inner shell, an opening is formed in the upper end of the perforated pipe, a gap is formed between the inner wall of the perforated pipe and the outer wall of the inner shell, a plurality of jet flow holes are formed in the outer wall of the perforated pipe, and a concave pipe is arranged at the lower end of the perforated pipe and extends into the lower end of the inner shell; the spiral flow guide plate can remarkably prolong the motion path and the retention time of fluid, the jet flow holes formed in the outer wall of the porous pipe can enable a liquid phase to enter a gap between the inner wall of the porous pipe and the outer wall of the inner shell in a high-speed jet flow state, strong shearing force and a negative pressure adsorption effect are formed, and a gas phase obtained after preliminary separation is efficiently sucked into the gap; and secondary mixing of gas and liquid is realized.

The invention relates to the technical field of underground water level monitoring, and discloses a magnetostriction float type underground water level meter and an underground water level measuring method and device. Comprising a coiled pipe body, and the cross section of the coiled pipe body is provided with a central large circular hole and a plurality of small circular holes which are symmetrically distributed; a water inlet hole blocked by permeable stone is formed in the bottom of the pipe body capable of being coiled; the electronic bin is in sealed connection with the top of the pipe body capable of being coiled, the electronic bin is fixedly connected with the ground protection pipe through a tensile steel wire rope, and scale information is arranged on the surface of the tensile steel wire rope; the floater assembly is arranged in the central large circular hole and comprises a hollow floating body and a built-in permanent magnet; the waveguide sensing assembly is characterized in that a closed-loop measuring loop formed by a waveguide sensing wire and a cable is arranged in a small circular hole, and the closed-loop measuring loop generates a torsion wave signal through an excitation circuit in an electronic bin; the magnetostriction signal processing module is arranged in the electronic bin; and acquiring the extension length of the measured tensile steel wire rope, and calculating the underground water level according to the extension length and the relative displacement.

The utility model relates to the technical field of pervious pipes, and discloses an anti-clogging combined pervious pipe which comprises a first pervious perforated pipe, the outer wall of the first pervious perforated pipe is fixedly connected with a second pervious perforated pipe, and the outer wall of the second pervious perforated pipe is fixedly connected with a supporting spring frame. Geotechnical cloth is connected to the outer wall of the supporting spring frame in a winding mode, a supporting grid is fixedly connected to the outer wall of the geotechnical cloth, the pipe shell is in threaded connection to the outer wall of the right end of the supporting grid, a fixing plate is fixedly connected to the right side of the top end of the pipe shell, and a baffle is connected to the bottom end of the fixing plate through a connecting assembly. And external impurities are prevented from entering the permeable pipe. According to the permeable pipe, the permeable pipe has high strength and hardness, meanwhile, the permeable pipe has good water permeability, the structural property and practicability of the permeable pipe are improved, and external impurities can be prevented from entering the permeable pipe to block the permeable pipe and affect the drainage effect of the permeable pipe.

The application discloses a porous tubular methanol solid oxide fuel cell with a closed end, which is a tubular solid oxide fuel cell (SOFC) cell stack, and a plurality of tubular SOFC single cells are contained in the tubular SOFC cell stack; the bottom end of the inner tube of the tubular SOFC single cell is open, the top end is closed, the inner tube wall is provided with a plurality of closed sections and a plurality of open sections, and the plurality of closed sections and the plurality of open sections are arranged alternately in sequence along the moving direction of fuel in the inner tube. The inner tube structure of the tubular SOFC single cell can effectively improve the uniformity of the distribution of methanol on the anode surface of the solid oxide fuel cell, thereby effectively overcoming the serious problem of carbon deposition caused by the uneven distribution of methanol on the anode surface of the solid oxide fuel cell.

The utility model discloses a full mixed flow reactor, which relates to the technical field of chemical equipment and comprises a reaction container, a support frame is fixedly mounted on the outer wall of the reaction container, a discharge gate valve is fixedly connected to the center of the bottom of the reaction container, and a top plate is fixedly mounted at the top of the reaction container. The top of the top plate is fixedly connected with a raw material adding cylinder, the top plate is provided with a rapid flow mixing mechanism, the rapid flow mixing mechanism comprises a rotating adapting pipe and a lifting seat, and the rotating adapting pipe is rotatably connected to the inner wall of the top plate. Through the transmission of the gear disc, the rotary adapting pipe can be driven to rotate, and the vertical square pipe is synchronously driven to rotate in the inner cavity of the reaction container, so that reactants can be uniformly discharged into the inner cavity of the reaction container by the perforated pipe, and materials in the reaction container can be stirred through the rotating stirring fins; the function of rapid complete flow mixing is achieved, the high efficiency of the structure is improved, and the reaction effect between materials is improved.

The utility model discloses a kind of microbial sewage treatment devices of feeding type, it is related to sewage treatment technical field, including microbial bed ontology, aerator and microbial inoculant filling mechanism, the microbial bed ontology includes drawer type microbial filler bin and the microbial carrier arranged in the microbial filler bin, the bin bottom of the microbial filler bin is equipped with a plurality of air holes, the aerator is fixedly connected below the microbial bed ontology, the microbial inoculant filling mechanism includes microbial feeder and microbial delivery porous pipe, the microbial delivery porous pipe is set in the upper of the microbial filler bin, the bottom discharge port of the microbial feeder is communicated with the microbial delivery porous pipe, a plurality of delivery channels are connected on the microbial delivery porous pipe, each the delivery channel is dispersedly arranged in the upper of the microbial filler bin.The utility model is convenient for the addition and replacement of microbial carrier and the bed of microorganism.

Device for introducing air into water flowing through a spiral tube, comprising a Schauberger spiral tube (10), the casing of which is rotationally deformed to form beads (11, 12) pointing alternately inwards and outwards, which run along the length of the spiral tube (10), characterized by a device for selectively introducing air into water flowing through the spiral tube (10), wherein the device for selectively introducing air into the spiral tube (10) comprises a porous tubular element (13) in the form of a porous hose or a porous tube, which element (13) is arranged coaxially to the spiral tube (10) in the latter at its longitudinal center and is connected to a compressed air source, with which air is introduced through the porous casing of the porous element (13) into the water flowing in the spiral tube (10).

The utility model discloses a porous pipeline for a condenser and an evaporator of a refrigerator, which comprises a cylindrical pipe body and is characterized in that a plurality of refrigerant hole channels arranged in parallel are arranged at the core part of the cylindrical pipe body and comprise a central hole channel and an outer ring hole channel, the central hole channel is positioned at the center of the pipe body, and the outer ring hole channel is positioned at the center of the pipe body. The outer ring hole channels surround the center hole channel and are evenly distributed. The heat exchange surface area of the pipeline is increased, the heat exchange efficiency is improved, uniform distribution of fluid is promoted, dead zones and turbulence phenomena are reduced, the flowing efficiency is improved, energy loss is reduced, shock absorption and sound insulation can be achieved, the use comfort of equipment is improved, temperature uniformity can be kept, local supercooling is reduced, and frosting and condensation are prevented.

The present invention discloses a sensitive voltage ranging device for drilling cracks and a method for using the device, which belongs to the field of underground engineering technology. It includes a main rod body and a sensitive transformer. The main rod body is a hollow porous tubular structure. The outside of the main rod body is wrapped with an insulating shell. The end of the main rod body is provided with a discharge structure and multiple high-voltage nozzles. It is also provided with a movable annular sensitive voltage ranging device. After the slurry is fully sprayed into the cracks in the anchor hole, the electrode sheet is used to inject current into the slurry. The annular sensitive voltage ranging device detects the voltage generated from the inner surface of the crack to the device. The greater the voltage generated, the farther the distance. The voltage data of different sections are converted into position data by a data processor. Finally, the position data is used to perform crack imaging calculation, thereby detecting the size and distribution of the anchor hole cracks. The structure of the invention can detect the development and direction of the cracks, and has the advantages of accurate detection, reasonable structure, stable function, and economical applicability.

The utility model provides a filter element of a suction filtration kettle, and belongs to the technical field of filter elements. The problem that an existing filter element is low in filtering efficiency is solved. The filter element of the suction filtration kettle comprises a sintering pipe with micropores and a non-porous pipe located in the sintering pipe, the open end of the sintering pipe is fixedly connected with a connector, the top end of the non-porous pipe is fixedly connected with the connector in a sealed mode, a gap is formed between the bottom end of the non-porous pipe and the closed end of the sintering pipe, and a certain distance is formed between the outer circumferential wall of the non-porous pipe and the inner circumferential wall of the sintering pipe. The filter element of the suction filtration kettle has the advantages that enough pressure difference exists inside and outside the filter element, and the filtering efficiency of the filter element is improved.

The invention discloses a combustion heating type reforming hydrogen production reactor with low heat loss, which is of a multilayer tubular communicating and wrapping structure which is coaxially and hermetically spaced, and comprises an inner perforated pipe, a surface combustor, a combustion chamber, a reforming chamber, a raw material cavity, a fuel secondary preheating cavity, a smoke exhaust chamber and a fuel primary preheating cavity which are coaxially and fixedly arranged at intervals from inside to outside. According to the low-heat-loss combustion heating type reforming hydrogen production reactor, the combustion chamber, the reforming chamber, the fuel second-stage preheating cavity, the smoke exhaust chamber and the fuel first-stage preheating cavity are integrated to serve as heat conduction components to work cooperatively, the structure is compact, the size is small, the weight is light, and compared with an electric heating reforming device, the low-heat-loss combustion heating type reforming hydrogen production reactor can achieve multi-stage preheating; heat utilization of all stages of chambers can be remarkably improved, so that heat dissipation loss and smoke exhaust heat loss are reduced to the maximum extent, meanwhile, medium and low temperature waste heat in reforming reaction products can be fully recycled, secondary waste of high-quality heat energy is reduced, the overall energy utilization efficiency of the system can be remarkably improved, and the system is particularly suitable for reforming hydrogen production.

The invention discloses porous tubular graphite phase carbon nitride, a photocatalyst and a preparation method and application thereof, and the preparation method of the photocatalyst comprises the following steps: (2.1) adding acetic acid into a melamine aqueous solution to obtain a mixed solution; (2.2) carrying out hydrothermal reaction on the mixed solution, then filtering, and washing and drying the obtained filter residue to obtain a carbon nitride precursor; (2.3) mixing the carbon nitride precursor with Mn-MOF, and performing grinding treatment to obtain mixed powder; and (2.4) calcining the mixed powder. The preparation process and the operation method are simple, a pre-assembly-thermal polymerization strategy is adopted to introduce Mn single atoms into a hexapox cavity of a graphite phase carbon nitride 3-s-triazine structure, the electron migration rate of the graphite phase carbon nitride is effectively improved, meanwhile, the porous tubular graphite phase carbon nitride is constructed, and the performance of the porous tubular graphite phase carbon nitride is improved. Therefore, the catalyst has more efficient performance of photocatalytic degradation of antibiotic pollutants and decomposition of water to produce hydrogen.

The utility model discloses a noise reduction type pneumatic motor, which relates to the field of pneumatic motors and comprises a motor main body, an air outlet pipeline is fixedly mounted on the motor main body, a noise reduction cover is sleeved on the motor main body and consists of a first sponge sleeve and a rubber air bag sleeve, and the rubber air bag sleeve is fixedly sleeved on the first sponge sleeve. A silencer is installed on the air outlet pipeline and composed of a shell, a second sponge sleeve, a first partition plate, a second partition plate, a third partition plate, an air inlet threaded pipe, an air outlet threaded pipe and a porous pipe, the second sponge sleeve is fixedly installed on the inner wall of the shell, and the first partition plate, the second partition plate and the third partition plate are all fixedly installed on the inner wall of the second sponge sleeve; the noise reduction cover is arranged on the motor main body, the noise reduction cover adopts a dual-structure design of the first sponge sleeve and the rubber air bag sleeve, the first sponge sleeve effectively absorbs high-frequency vibration noise, the rubber air bag sleeve blocks low-frequency noise, and the overall noise during operation of the motor main body is remarkably reduced through the synergistic effect of the first sponge sleeve and the rubber air bag sleeve.

The utility model relates to the technical field of sock processing, and discloses a shaping and drying all-in-one machine for sock processing. According to the shaping and drying all-in-one machine for sock processing, by arranging the drying mechanism, efficient and comprehensive drying and auxiliary shaping functions are achieved, hot air can be blown to the surfaces of socks from the outer side through the design of a first pump body and an air guide cover, the outer contours of the socks are covered with large-area air flow generated by the first pump body and the air guide cover, and moisture in fibers of the outer layers of the socks is promoted to be rapidly evaporated; the socks can be dried from the inner side through the design of the second pump body and the perforated pipe, the first pump body and the second pump body are used in cooperation to form vertical bidirectional and uniform hot air circulation, all parts of the socks can receive balanced heat through the unique airflow mode, the sock drying process is greatly accelerated, and the sock drying efficiency is improved. And meanwhile, the hot air flow in the vertical direction can assist steam to better permeate into fibers of the socks, and the quality and efficiency of sock processing are improved.

The utility model relates to the technical field of combustion tubes, in particular to a high-power gas combustion tube, which comprises a perforated tube, an igniter and a fan, an ignition needle box is mounted at one end of the perforated tube, the ignition needle box is connected with the fan through a mixing tube, the igniter is arranged on one side of the fan, and an electromagnetic valve and a nozzle are respectively arranged above the igniter. An electromagnetic valve is installed at one end of the nozzle, a copper pipe is installed at the end, away from the electromagnetic valve, of the nozzle, and the end, away from the nozzle, of the copper pipe is connected with a mixing pipe; an ignition needle body and a tempering induction needle are arranged at the end, close to the mixing pipe, of the ignition needle box. According to the high-power gas combustion tube, the diameter of the perforated tube is changed from a conventional 6-minute perforated tube to a 1.5-inch perforated tube, the power of the gas combustion tube can be effectively improved by using 15 rows of perforated tubes with the diameter of 1.3 mm, and the high-power gas combustion tube omits a conventional fire banking plate, so that the combustion area is larger.

The application relates to a basement anti-seepage structure for building engineering, belonging to the technical field of basement waterproofing, which comprises a cushion layer, the upper surface of the cushion layer is rigidly cast with a concrete bottom plate, the upper side of the concrete bottom plate is provided with a water-permeable concrete layer, the upper surface of the water-permeable concrete layer is flexibly bonded with a decorative panel; an anti-seepage mechanism for preventing groundwater seepage is arranged between the concrete bottom plate and the water-permeable concrete layer, and an extraction mechanism is arranged on the decorative panel. The basement anti-seepage structure for building engineering is provided with the integrated anti-seepage mechanism between the concrete bottom plate and the water-permeable concrete layer, realizes integrated protection of resistance-conduction-drainage-monitoring, and forms a double rigid-flexible barrier together with a waterproofing membrane and a microcapsule self-repairing coating, so that the initial groundwater seepage is effectively inhibited; the drainage cushion is embedded with X / Y axial porous pipes, and is communicated with a plurality of water collecting cavities through a drip pipe, so that a grid partitioned flow guiding network is formed, and it is ensured that the seepage water is quickly captured and directionally collected.