66results about How to "Ensure normal drainage" patented technology

The invention discloses a pressure-balanced floor drain, and relates to the technical field of floor drains. The technical scheme thereof is as follows: the floor drain comprises a cylinder and a reset device, wherein the upper end of the cylinder is a water inlet, the lower end of the cylinder is a water outlet, the reset device is arranged at the lower end of the cylinder, a sealing cover is arranged between the reset device and the cylinder, the reset device can apply a pre-tightening force to the sealing cover, so that the sealing cover is close to the water outlet and seals the water outlet, a stroke chamber is arranged on the sealing cover, a through hole 1 connected to a sewer pipe is arranged below the stroke chamber, a through hole 2 connected to the outside is arranged above the stroke chamber, a floating member is arranged in the stroke chamber, and the floating member can seal the through hole 1 by its own gravity. The floating member rises under the action of the air pressure difference, so that the air pressure of the lower sealing section is the same as or close to the outside air pressure, so as to ensure that the sealing cover can move up and down normally, and achieve the purpose of relatively smooth discharge of accumulated water at the water inlet.

The invention provides a low-rolling-resistance and high-wet-grabbing pneumatic radial tire, which belongs to the technical field of tires, and comprises a tread and a circumferential groove extending along the circumferential direction of the tread, the contour between the highest point of the tread and the end point of one side of the tread is sequentially divided into a first arc section, a second arc section, a third arc section and a fourth arc section, the radius TR1 of the first section of arc, the radius TR2 of the second section of arc, the radius TR3 of the third section of arc and the radius TR4 of the fourth section of arc meet the following relation: TR1: TR2: TR3: TR4 = 2.3: 1.9: 1.6: 1; the number of the circumferential grooves is five, the five circumferential grooves sequentially comprise a central water-drop-shaped pattern groove, two pattern grooves close to the center and two shoulder water-drop-shaped pattern grooves from the center to the two sides of the tread, and the central water-drop-shaped pattern groove and the shoulder water-drop-shaped pattern grooves are grooves which are self-closed in a loading state; according to the invention, the tire structure design, the pattern design and the formula design are optimized, so that the tire has the ultimate durability, low rolling resistance and full-life-cycle high-wet-grip performance at the same time.

The invention discloses a road gutter inlet grate structure convenient for municipal administration, the road gutter inlet grate structure comprises an upper grate, a lower grate structure and an adjusting mechanism, the lower grate structure comprises louver boards, and two adjacent louver boards are engaged with each other; a plurality of transmission gears are arranged at each end of the louver boards side by side, and wheel shafts of the transmission gears are rotationally connected with the side wall of the gutter inlet; the adjusting mechanism comprises a power source and a driving shaft, a pair of driving gears are arranged at the two ends of the driving shaft, racks meshed with the driving gears are arranged in a pair of side walls of the gutter inlet, and a rack meshed with the driving gears is arranged above each row of transmission gears. The grate structure is of a double-layer structure, and the upper grate is fixed to the gutter inlet and can intercept sundries and bear loads. In non-rainy days, the louver boards are connected together and can seal the gutter inlet, so that the behavior of pouring garbage into the gutter inlet disorderly by merchants is fundamentally eradicated, and a certain safety protection effect is achieved; in rainy days, the adjusting mechanism drives the louver boards to rotate in the same direction at the same time, so that the lower grate is in an open state, and drainage is facilitated.

The utility model discloses a water-driven self-pressure-relief buried telescopic sprinkling irrigation device, and belongs to the technical field of agricultural irrigation. The water-driven self-pressure-relief buried telescopic sprinkling irrigation device comprises an outer pipe assembly, an inner pipe is arranged in the outer pipe assembly in a sliding mode, the upper end and the lower end of the inner pipe are fixedly provided with a spray head and a sliding base respectively, the sliding base divides the interior of the outer pipe assembly into a first inner cavity and a second inner cavity, and the spray head extends to the exterior of the outer pipe assembly; a self-pressure-relief assembly is arranged in the sliding seat in a sliding mode, and a plurality of connecting holes matched with the self-pressure-relief assembly are formed in the sliding seat. According to the technical scheme, the buried telescopic sprinkling irrigation device can be driven up and down through water resources, and meanwhile, pressure self-relief can be achieved.

The utility model relates to the technical field of reservoir arc gates, and discloses a reservoir water level and arc gate linkage system which comprises a water level gauge, a plurality of reservoir arc gates, a computer monitoring system, an arc gate communication machine and an arc gate control system which are installed in an upstream reservoir, and the water level gauge is used for measuring the water level of the upstream reservoir; linkage of the water level in front of the dam and the radial gate is achieved, automatic starting and stopping are carried out according to the formulated radial gate opening target and scheme, the achieved functions are complete, automatic starting and stopping of the radial gate can be achieved at the necessary moment, and the phenomenon that reservoir water overflows the dam due to the fact that attenders do not pay attention in place can be effectively eradicated; the computer monitoring system and the radial gate control system are organically combined through control over the water level, radial gate linkage under the emergency condition is achieved, cost is saved, related control parts do not need to be independently arranged, the construction cost can be effectively saved, the outer wall of the reservoir radial gate is cleaned, and the phenomenon that water drainage is affected due to attachment of aquatic plants is avoided.

The invention discloses a large-void open-graded asphalt mixture as well as a preparation method and application thereof, according to the mass percentage, the passing rate of 13.2 mm sieve pores of the large-void open-graded asphalt mixture is 95-100%, the passing rate of 9.5 mm sieve pores of the large-void open-graded asphalt mixture is 39.2-39.6%, the passing rate of 4.75 mm sieve pores of the large-void open-graded asphalt mixture is 7.0-7.2%, and the passing rate of 2.36 mm sieve pores of the large-void open-graded asphalt mixture is 6.2-6.4%. The large-porosity open-graded asphalt mixture is prepared from the following components in parts by mass: 6.0 to 6.2 parts of high-viscosity and high-elasticity modified asphalt, 0.3 to 0.5 part of basalt fiber, 95 to 105 parts of mixed aggregate and 0 to 2 parts of mineral powder, the mixed aggregate comprises the following components in parts by mass: 45-50 parts of a first coarse aggregate with the thickness of 10-15mm, 45-50 parts of a second coarse aggregate with the thickness of 5-10mm and 5-10 parts of a fine aggregate with the thickness of 0-3mm. According to the open-graded asphalt mixture with the large void ratio, the technical problems that in the prior art, a drainage asphalt pavement formed by paving the open-graded asphalt mixture with the large void ratio is poor in pavement performance such as drainage performance, rutting resistance and cracking resistance and poor in durability are effectively solved.

The invention discloses an expressway slope structure in a high-water-level area and a construction method of the expressway slope structure. The technical problem that in the prior art, the reinforcement and drainage effects are poor is solved. The expressway slope structure in the high-water-level area comprises a concrete grid, a slope layer and a slope layer, the first flexible grid is laid on the soil matrix; the porous water guide layer is laid on the first flexible grid; the second flexible grid is laid on the porous water guide layer; the concrete grid is laid on the second flexible grid; the elastic water guide layer is laid on the second flexible grid and is filled in the cavity; the filter layer is laid on the elastic water guide layer; the water plugging layer is arranged above the filtering layer, and a water storage cavity is formed between the water plugging layer and the filtering layer; the drainage mechanism is used for draining the clear liquid filtered by the filter layer in the water storage cavity into the drainage groove; and the fixing mechanism is used for fixing the concrete grid on the soil matrix.

The invention discloses a traditional Chinese medicine health-preserving decoction dreg recycling treatment method and device, and relates to the technical field of environment-friendly treatment of decoction dregs, the device comprises a tank body, a feeding pipe mounted on the outer wall of one side of the tank body, a drainage pipe mounted on the outer wall of one side of the tank body, two dryers mounted on the front side and the back side of the tank body respectively, and a first rotating disc, a plurality of filter cartridges are rotationally connected into the first turntable; the comprehensive auxiliary mechanism is used for assisting dehydration treatment, primary drying treatment, crushing treatment, secondary drying treatment and discharging treatment of the medicine residues; the crushing mechanism is used for performing crushing treatment on the medicine residues subjected to primary drying; an automatic adjusting mechanism; according to the traditional Chinese medicine health-preserving decoction dreg recycling treatment method and device, the effects of dehydrating, primary drying, crushing and secondary drying of decoction dregs are improved at the same time, and the problem that a filter cartridge is easily blocked due to the fact that the blades crush the decoction dregs in advance in the stages of dehydrating and primary drying of the decoction dregs is solved by controlling folding and unfolding of the blades.

The utility model belongs to the technical field of road construction, and particularly relates to a water supply and drainage project roadbed grooving device which comprises a box body. A combination seat is fixedly connected to the bottom of the middle of the box body, a sleeve is fixedly installed at the bottom of the combination seat, a telescopic rod is movably installed at the bottom of the sleeve, a dust cover is fixedly connected to the surface of the telescopic rod, a dust suction pipe is movably connected to one side of the top of the dust cover, and a dust suction head is fixedly connected to the bottom of the dust suction pipe. A dust suction pump is fixedly connected to the top of the dust suction pipe, a dust suction box is fixedly connected to the other side of the dust suction pump, a supporting plate is fixedly connected to the bottom of the telescopic rod, and a cutter is arranged on the inner wall of the supporting plate. Through the arrangement of the dust suction pipe, the dust suction head, the dust suction pump and the dust suction box, dust generated in the grooving process can be effectively collected, dust diffusion and pollution are reduced, the time for an operator to be exposed in a dust environment is shortened, and harm to the health of the operator is reduced.

The utility model provides an energy storage air conditioner, which comprises a plate heat exchanger, a first heat exchanger and a second heat exchanger, a liquid cooling channel is arranged in the liquid cooling part; a first liquid pump; a refrigerant in the first refrigerant channel exchanges heat with liquid in the first liquid channel, so that the energy storage equipment is cooled or heated by the liquid cooling part; the liquid supplementing device comprises a liquid box, a liquid supplementing device and a liquid supplementing device, the liquid inlet end of the second liquid pump is connected with the liquid outlet, and the liquid return port and the liquid outlet end of the second liquid pump are connected between the liquid cooling channel and the first liquid pump; the power supply module is used for converting alternating current into direct current; the energy storage air conditioner comprises a liquid supplementing contactor connected with a power supply module so that the power supply module can be powered on or powered off through power-on and power-off of the liquid supplementing contactor; the power module is connected with the second liquid pump to enable the second liquid pump to be powered on or powered off; and under the driving of the second liquid pump, the liquid in the liquid box enters the liquid cooling loop so as to supplement the liquid to the liquid cooling loop. Automatic liquid supplementing and stopping of liquid supplementing can be achieved, and cost is saved.

The utility model belongs to the technical field of garden drainage structures, and discloses a garden construction drainage structure which comprises a drainage channel and a well lid detachably connected to the top of the drainage channel, a water leakage groove penetrating through the well lid is formed in the well lid, and a filter plate is obliquely arranged in the drainage channel. A water leakage hole penetrating through the filter plate is formed in the filter plate, a mounting groove is formed in the filter plate, and a collecting assembly used for collecting sundries falling from a water leakage groove and rolling along the filter plate is arranged in the mounting groove. According to the device, when sundries such as deadwood and fallen leaves fall onto the filter plate from the water leakage groove, due to the fact that the filter plate is obliquely arranged, the sundries such as the deadwood and the fallen leaves can roll into the collecting assembly through the filter plate, and when the sundries such as the deadwood and the fallen leaves in the collecting assembly need to be cleaned, only the well lid needs to be detached, and the well lid is convenient to clean. Sundries such as deadwood and fallen leaves in the collecting assembly can be cleaned, normal drainage of the drainage ditch is guaranteed, and the probability that the drainage ditch is blocked is reduced.

The utility model discloses an ecological slope protection device for water and soil conservation, which relates to the technical field of ecological slope protection and comprises a plurality of groups of slope protection support plates, reinforcing plates are fixedly mounted at the tops of the plurality of groups of slope protection support plates, and a group of fixing mechanism is arranged in the middle of every six groups of slope protection support plates. The fixing mechanism comprises a fixing block, a fixing bolt, a first bolt and six sets of second bolts, and a limiting groove is formed in the top of the fixing bolt. By arranging the multiple groups of slope protection supporting plates and the fixing mechanisms, the whole fixing mechanisms and the six groups of slope protection supporting plates are fixed to the top of soil through the splicing type slope protection supporting plates and the fixing bolts by adopting modular components, damage to the original terrain can be reduced, only vegetation rhizomes on the outer walls of the fixing bolts can be damaged in the dismantling process, damage to vegetation is small, and the slope protection supporting plates are convenient to use. Components of the spliced slope protection supporting plate can be combined and adjusted according to needs, and the requirements of different gradients and terrains are met.

The utility model relates to a BOG compressor inlet filter and liquid collecting tank purging device which comprises a liquid separation tank, a liquid collecting tank and a plurality of compressors, the top of the liquid separation tank is communicated with one end of a gaseous natural gas pipeline, and the top of the liquid separation tank is further communicated with inlets of the compressors through a first pipeline; an outlet of the compressor is communicated with one end of a pipeline II; a filter is mounted on the pipeline I; the top of the liquid collection tank is communicated with one end of a nitrogen pipeline and is communicated with the bottom of the liquid separation tank through a pipeline III, and the bottom of the liquid collection tank is communicated with one end of a discharge pipeline; the pipeline II is communicated with the corresponding part of the pipeline I through a gas return pipeline I, and the part of the pipeline I corresponding to the position between the filter and the liquid separation tank is communicated with the nitrogen pipeline through a gas return pipeline II. According to the utility model, the filter at the inlet of the compressor is reversely purged to the filtering tank to be circulated back to the inlet of the BOG compressor for reuse, BOG is introduced by using the outlet of the BOG compressor to replace nitrogen to carry out pressurization emptying on the liquid collecting tank, the energy is saved, the consumption is reduced, and the production is safe.

The utility model discloses a collapsible loess site municipal road sponge city drainage system, which belongs to the technical field of drainage systems and comprises two cutoff walls arranged side by side and drainage systems mounted on the inner sides of the cutoff walls and used for collapsible loess site municipal roads. A plurality of water diversion pipes are inserted into the upper portion of the cutoff wall on one side side by side, two mounting plates are mounted on the inner wall of the cutoff wall on the side side by side, a connecting frame is arranged between the two mounting plates, an anti-leakage net is mounted on the inner side of the connecting frame in an embedded mode, and rotating shafts are mounted in the middles of the outer walls of the two symmetrical sides of the connecting frame; the rotating shafts are movably connected to the corresponding sides of the mounting plates in an inserted mode, a servo motor is mounted on the outer side of the mounting plate on one side, and the servo motor is coaxially connected with one rotating shaft. According to the collapsible loess site municipal road sponge city drainage system, the water diversion pipe connected with the road is more convenient to maintain, and the arrangement is convenient under the condition that the drainage performance is ensured.

The utility model relates to the technical field of drainage ditches, in particular to a permeation drainage ditch for a sponge city, which comprises a drainage mechanism, the drainage mechanism comprises two limiting shells and a bag net, a permeation base is fixedly connected between the two limiting shells, and the opposite sides of the two limiting shells are rotationally connected with limiting frames. According to the device, the first filter screen plates are rotationally connected to the opposite sides of the two limiting shells, the two first filter screen plates are matched to filter and collect sundries, the first filter screen plates are driven to rotate through the inflatable floating sleeve after rain and water are stored, and the first filter screen plates incline to pour the sundries into the collecting shell to be collected; when the two first filter screen plates incline, the pocket net blocks a gap between the two first filter screen plates, sundries are prevented from penetrating through the pocket net, fragments of the lower water plate can be collected when the lower water plate is damaged, subsequent replacement of the lower water plate is more convenient, the sundries penetrating through the lower water plate are convenient to collect, the drainage performance of the permeation base is convenient to maintain, and use is convenient.

The application discloses a washing machine and a control method thereof. The filter is arranged in the accommodating groove and below the end cover. The filter forms a filter groove. Water in the end cover can be introduced into the filter groove and filtered through the filter groove. The filtered water is introduced into the accommodating groove and discharged from the accommodating groove. The cleaning brush is at least partially arranged in the filter groove. The cleaning brush is in contact with the inner wall of the filter groove and can rotate around the rotating shaft in the filter groove. The top of the cleaning brush is provided with a pushing part. The water in the end cover impacts the pushing part during the introduction into the filter groove, so that the pushing part pushes the cleaning brush to rotate, so that the cleaning brush brushes the inner wall of the filter groove through rotation. Therefore, during the water entering the filter groove, the water flow impacts the pushing part to push the cleaning brush to rotate and brush the filter groove, so that the filter can be well cleaned to prevent the filter from being blocked, and the normal drainage of the washing machine is ensured.

The utility model relates to the technical field of modular box type houses, in particular to a modular box type house main body box drainage component which comprises a first top main beam assembly, a second top main beam assembly, a top box corner and a top frame corner connecting piece, and the top box corner and the top frame corner connecting piece are arranged between the first top main beam assembly and the second top main beam assembly. The two sides of the top box corner and the two sides of the top frame corner connecting piece are fixedly connected with the first top main beam assembly and the second top main beam assembly respectively. And sealed and communicated channels are formed among the first top main beam assembly, the second top main beam assembly, the top box corners and the top frame corner connecting pieces. According to the drainage component of the modular box-type house, drainage of the modular box-type house is well guaranteed, the phenomena of unsmooth drainage or water leakage and water seepage of the roof of the modular box-type house are avoided, and the phenomenon that the inner wall and the outer wall of the modular box-type house are polluted by sewage is reduced.

The embodiment of the utility model provides a cast-in-place concrete slope protection forming template capable of adjusting gradient, which relates to the technical field of concrete slope protection processing and comprises a side plate and a top plate arranged at the upper end of the side plate, a positioning hook is arranged on one side of the top plate, a rotating shaft is further arranged on one side of the upper end of the top plate, and a supporting piece is arranged on the other side of the top plate. When the side plates are used for machining the concrete slope protection, the transverse baffles and the vertical baffles are spliced, then the top plate at the upper end is installed, after the top plate is adjusted to the proper gradient, concrete is poured into the top plate for forming, and then the slope protection can be conveniently made into the proper gradient for use.

This invention relates to the field of flood control manhole cover technology, and proposes an anti-clogging manhole cover for flood control emergency use in municipal engineering. The cover includes: a cover body with several vertically extending drainage windows; several flaps that open and close within the drainage windows, each flap having an upward-lifting portion. When the flap is open, the upward-lifting portion rotates to the top of the cover body and is tilted. Moving objects on the road press down on the flaps, causing them to close; a filter cover located below the upward-lifting portion, with an anti-clogging channel inside. When the flap is open, the upper part of the filter cover passes through the drainage windows and rotates to the top of the cover body, while the lower part of the filter cover is located inside the drainage windows or below the cover body; and an actuating element that drives the flaps to rotate and open. This technical solution solves the problem in the prior art where manhole covers in motor vehicle lanes cannot effectively participate in drainage during flood control emergencies, thus affecting traffic flow.

The utility model relates to the technical field of glass fiber products, in particular to a light-gram-weight biaxial flow guide fabric which comprises a first main yarn layer, a second main yarn layer and a framework layer laid between the first main yarn layer and the second main yarn layer, and the laying angles among the first main yarn layer, the second main yarn layer and the framework layer are different. Due to the existence of the framework layer, a gap exists between the first main yarn layer and the second main yarn layer, resin can permeate conveniently, the flow guide effect is achieved, and the flow guide and combination effects of a final product between pultrusion plates are effectively guaranteed; the framework layer serves as an auxiliary layer and plays a role in supporting the fabric and preventing the fabric from deforming, the adjacent first main yarn layer and the second main yarn layer have certain supporting force, the problem that the biaxial fabric is prone to deformation is solved, optimization of the blade structure is achieved, the blade can keep a stable shape when bearing wind power and other external acting force, and the service life of the blade is prolonged. And the structural strength and stability of the blade are improved.

The application relates to the technical field of nursing, in particular to a breast tumor postoperative nursing belt which comprises two protective belts, an inflation mechanism is arranged between the two protective belts, the lower edge of each protective belt is connected with an extension belt, the front surface of the extension belt is fixedly connected with a soft belt, the upper edge of the front surface of the soft belt is fixedly connected with a hard plate, a sliding opening is arranged in the front surface of the hard plate, a connecting seat is slidably connected to the inner side of the sliding opening, an elastic sheet is arranged at the rear end of the connecting seat, pulling mechanisms are arranged at the two sides of the front surface of the elastic sheet, and a binding mechanism is arranged at the side away from each other of the two protective belts. The drainage tube is led out from the rear of the elastic sheet, the problem that the drainage tube is squeezed can be avoided, the drainage is ensured, when the protective belt is inflated, the rear end of the elastic sheet is well limited, and the elastic sheet is prevented from being easily slid and displaced in the later use.

The present application relates to the technical field of medical equipment, and more particularly to a pancreatic anastomosis intelligent negative pressure drainage system for pancreatic fistula monitoring, which comprises: a baseline construction module for constructing an individual reference baseline data set within a preset time period; an enzyme concentration detection module for detecting whether the pancreatic amylase concentration in the drainage fluid exceeds an abnormal trigger threshold; a tube state identification module for determining a tube state identification result through tube state visual identification and flow rate consistency verification when the enzyme concentration abnormal duration exceeds a threshold; a saturation compensation module for extracting the plateau of the pancreatic amylase concentration curve and judging whether the saturation sequence of each detection point meets the requirements; and a correction module for correcting the initial negative pressure when the saturation sequence requirements are not met. Through the cooperation of multiple modules, the present application realizes real-time and accurate monitoring of the pancreatic anastomosis fistula, improves the reliability and response speed of postoperative complication identification, and provides intelligent drainage state judgment and early warning support for clinical use.

The invention discloses a thyroid cancer postoperative drainage device. The thyroid cancer postoperative drainage device comprises a double-cavity tube and a fixing mechanism. The double-cavity tube comprises a flushing tube and a drainage tube which are arranged side by side, the pipe diameter of the flushing tube is smaller than that of the drainage tube, the head end of the flushing tube is shorter than that of the drainage tube, and the double-cavity tube is sleeved with an inflatable and deflatable air bag. The fixing mechanism comprises a limiting seat, a fixing belt, a pressing plate and a manual adjusting part, the limiting seat is fixed to the human body through the fixing belt, a pipe penetrating groove is formed in the limiting seat, the double-cavity pipe penetrates through the pipe penetrating groove, the air bag is located in the pipe penetrating groove, and the pressing plate is movably arranged in the pipe penetrating groove and connected with the manual adjusting part. The manual adjusting piece is used for driving the pressing plate to move, and the air bag is extruded to be elastically deformed so that the double-cavity tube can be locked at the preset position in the tube penetrating groove. Through cooperation of the air bag and the pressing plate, lossless and accurate-positioning stable fixing of the drainage tube is achieved, the risk that the tube is displaced, disengaged or squashed is effectively avoided, and the safety and convenience of postoperative drainage are improved.

The present invention relates to a spliced ​​chamfering device, comprising a base and a plurality of thin tooth plates; all of the thin tooth plates are fixedly spliced ​​on the side wall of the lower part of the base to form a conical chamfering body, and the lower parts of all of the thin tooth plates extend to the bottom of the base, and the lower parts of all of the thin tooth plates are pressed against each other on the side close to the base, and a drainage groove connecting the water hole inside the base is formed between two adjacent thin tooth plates. The beneficial effects of the present invention are as follows: the chamfering device is spliced ​​by a plurality of thin tooth plates, and a drainage groove is formed between each two adjacent thin tooth plates, so that the working surface of the chamfering device is densely distributed with drainage grooves, and the cooling water discharged outward from the drainage groove can cover the entire working surface, thereby improving the working efficiency and extending the service life of the chamfering device; at the same time, the deformation rates of the radial points are relatively close, the deformation problem is alleviated, and the service life of the chamfering device is extended.

The invention discloses a water pan system with double water pumps and a control method of the water pan system, and relates to the technical field of heat exchange equipment. The water pan system of the double water pumps comprises a first water pan, a first drainage pump, a second drainage pump, a water level detection assembly and a control assembly. Wherein the first water pan is used for receiving and storing condensate water; an inlet of the first draining pump is communicated with the first water receiving disc so as to suck condensed water in the first water receiving disc; an inlet of the second draining pump is communicated with the first water receiving disc so as to suck condensate water in the first water receiving disc, and the second draining pump and the first draining pump are arranged in parallel; the water level detection assembly is used for detecting the water level of condensate water in the first water pan; the control assembly is in signal connection with the first drainage pump, the second drainage pump and the water level detection assembly so as to control starting and stopping of the first drainage pump or starting and stopping of the second drainage pump according to the detection result of the water level detection assembly, the water pan system can effectively guarantee continuous normal drainage, and the situation of water overflowing is reduced and avoided.

The invention provides a paper product, modified light calcium carbonate and a preparation method thereof. The preparation method of the modified light calcium carbonate comprises the following steps: carrying out surface charge modification treatment on light calcium carbonate; carrying out micro-polymerization treatment on the light calcium carbonate subjected to surface charge modification treatment; and carrying out pre-flocculation treatment on the light calcium carbonate subjected to micro-polymerization treatment. According to the preparation method of the modified light calcium carbonate provided by the embodiment of the invention, the light calcium carbonate is firstly subjected to surface modification (charge adjustment), then subjected to micro-polymerization (specific surface area adjustment) and finally subjected to pre-flocculation (overall form optimization), the modified PCC filler can be added into paper pulp for papermaking, and under the condition that the addition amount of the PCC filler is increased, the specific surface area of the PCC filler is increased, and the overall form of the PCC filler is optimized. The water filtering performance of the pulp is ensured, the retention characteristic is not deteriorated, and considerable paper physical property strength, surface strength and sizing performance are maintained. And on the premise of ensuring the running performance of the paper machine, the paper making raw material cost is reduced while the same paper quality is achieved.

The utility model discloses an odor-resistant floor drain core with an internal filter element with a reducing pipe diameter, which comprises a filter cartridge and an inner pipe core, the inner pipe core is detachably nested and assembled in the filter cartridge, the filter cartridge comprises a draining section and a water storage section, a filter cartridge wall of the draining section is provided with a through hole for draining water, and the water storage section is provided with a water inlet and a water outlet. The water storage section is arranged on the lower portion of the draining section, a main body of the filter cylinder is of a cylindrical structure, the filter cylinder wall of the water storage section and the bottom of the filter cylinder are both of a waterproof structure, through holes in the lowest row of the draining section are the lowest drainage position, the inner pipe core comprises an upper reducing pipe and a lower duckbilled section, and the upper reducing pipe is connected with the lower duckbilled section. A water outlet port of the lower duckbilled section is arranged below the lowest drainage position, and the length of the lower duckbilled section is matched with that of the draining section.

The present invention discloses a construction method of a floating ground anti-vibration and anti-leakage structure, wherein the structure comprises a structural floor, a retaining wall vertically connected to the four sides of the structural floor, a leveling layer connected to the top of the structural floor, a cushion connected to the top of the leveling layer, a steel plate connected to the top of the cushion, an interlayer waterproofing coiled material connected to the top of the steel plate, a floating platform connected to the top of the interlayer waterproofing coiled material, a water guide groove arranged on one side of the retaining wall, and a water collection port arranged below the floating platform. The present invention is conducive to ensuring the effective collection of ground water flow through the arrangement of the water guide groove; and the connection between the water guide groove and the water collection port ensures the efficient discharge of water flow; the flange arrangement of the steel plate at the water guide groove and the water collection port ensures the effective installation of the waterproofing coiled material and the integrity of waterproofing; and the joint arrangement of the seismic isolation pad, the elastic bracket and the strip foundation is conducive to reducing the vibration of the equipment and ensuring the smooth operation of the equipment.

The invention discloses a port channel slope protection structure which comprises a slope body which comprises an upper slope platform, a slope surface and a lower slope platform. The slope surface protection plates are arranged on the upslope platform and the slope surface in a step shape, the platform of the slope surface protection plate at the highest step is parallel to the upslope platform, and the ladder section of the slope surface protection plate at the lowest step is located at the bottommost part of the slope surface; the bench of any step of slope protection plate is located on the slope; the first water drainage channel comprises an inclined water groove formed in the slope protection plate and a horizontal water groove formed in the downhill platform through an anti-collision groove; a plurality of water seepage holes are formed in the surface of the inclined water tank, the inclined water tank is communicated with the horizontal water tank, and a water outlet is formed in the end part of the horizontal water tank; wherein a plurality of connecting inserting openings are formed in the bottom of the platform of any step of slope surface protection plate, a plurality of anchor rods are arranged on the upslope platform and the slope surface, one section of each anchor rod is inserted into the slope body, and the other end of each anchor rod extends into the corresponding connecting inserting opening. The slope protection structure can be effectively prevented from being scoured by water flow.