781results about How to "Smooth drainage" patented technology

The invention discloses a long tunnel fast construction process. The tunnel construction method in the direction from the entrance to the exit and the tunnel construction method in the direction from the exit to the entrance are the same and each construction section is respectively constructed from back to front. The construction process is as follows: 1, excavating construction at an initial construction section, the process is as follows: performing advance geology forecast, determining the excavating construction method for the current construction section, excavating and primary supporting; 2, excavating construction at the next construction section; 3, repeating the step 2 for multiple times until the construction tunnel is through, wherein in the tunnel construction process, found water seepage areas are timely subjected to draining treatment, and the secondary lining construction is synchronously performed on the tunnel holes formed by excavating from front to back. The long tunnel fast construction method is reasonable in design, simple and convenient in construction, safe in the construction process, short in construction process and fast in construction progress, thus effectively solving the defects and shortcomings such as large equipment investment, long construction period and slow construction progress of the existing long tunnel construction.

A medical semi-automatic urine metering storage device belongs to the technical field of medical devices. A box body 1 comprising a chamber divided into several urine storage chambers and an overflow chamber 14, a box cover 2 with a catheter interface seat 21 fixed with a catheter interface 211 above the box body 1 and on the box body 1 below is provided with the box bottom cover 3 of the discharge valve 4, the catheter interface seat 21 is located in the middle part of the box body 1, and the open position on the upper part of the catheter interface seat 21 is provided along the periphery of the catheter interface 211. Air film 212, catheter interface 211 is provided with check valve 2111; The diversion channel is provided with a discharge valve seat 37 with a discharge pipe 36 and a valve hole 35 in the middle of the box bottom cover 3; the discharge valve 4 is arranged in the valve hole 35. Advantages: Urine backflow can be prevented when the box body 1 is tilted or even lying down; the liquid can be drained smoothly when the drain valve 4 is opened; the catheter interface seat 21, the diversion channel, and the drain valve 4 are respectively arranged on the box cover 2 and the middle part of the box bottom cover 3, the box body 1 is not prone to deflection, which helps to ensure the accuracy of measurement.

The invention relates to a traditional Chinese medicine composition for treating burn, comprising an oral medicine and an externally applied medicine, wherein the oral medicine is prepared from angelica sinensis, hemlock parsley, astragali, pseudo-ginseng, sanguisorba, safflower, radix rehmanniae, spatholobus stem, baikal skullcap root, giant knotweed, oldenlandia diffusa, dangshen, tuckahoe, white atractylodes rhizome and red peony root; and the externally applied medicine is prepared from myrrh, mastic, rhubarb, pseudo-ginseng, safflower, draconis sanguis, natural indigo, gromwell, fried sanguisorba, giant knotweed, carpet bugle, borneol and phellodendron bark. The traditional Chinese medicine composition provided by the invention is convenient to use and coat on an affected part for skin absorption, is easy to wash off and convenient to change dressing, can keep the surface of a wound wet, can prevent bacterial invasion, is capable of quickly alleviating pain, diminishing inflammation and relieving itching, and can promote the surface of a wound to heal quickly and reduce scar. In addition, the traditional Chinese medicine composition has short period of treatment, an obvious curative effect and no obvious toxic or side effect, has obvious efficacies of antibiosis, alleviating pain, subduing swelling, diminishing inflammation, adsorbing, converging, removing necrosis and promoting granulation, and is used through oral administration and external application with quite good effect.

The invention provides an external traditional Chinese medicine preparation for treating chronic wounds, which is prepared from the following raw medicines in parts by weight: 10-20 parts of draconis sanguis, 10-20 parts of chuanxiong rhizome, 10-20 parts of notoginseng, 10-20 parts of fried sanguisorba, 10-20 parts of safflower, 10-20 parts of spatholobus stem, 10-20 parts of giant knotweed, 10-20 parts of oldenlandia, 10-20 parts of red sage root, 10-20 parts of herba patriniae, 10-20 parts of moutan bark, 10-20 parts of myrrh, 10-20 parts of mastic, 10-20 parts of rhubarb, 10-20 parts of natural indigo, 10-20 parts of gromwell, 10-20 parts of catechu, 10-20 parts of borneol, 10-20 parts of phellodendron bark and 10-20 parts of boneset. The external traditional Chinese medicine preparation provided by the invention can promote healing of infectious wounds, increase pus, enhance qualitative viscosity and regenerate granulation to enable the wounds to quickly heal, has an obvious effect on treating wound infection, and can be used for treating partial ulcer, removing necrotic tissue and promoting granulation, accelerating the degeneration process of the necrotic tissue, promoting dilation of capillary vessels, accelerating microcirculation of the capillary vessels and filling the wounds.

The present invention discloses a same-floor drainage system. Said same floor drainage system includes the following several portions: main pipe passed through all the floors, multi-channel adaptors, branch pipes, toilet connectors, multifunctional floor drains and three-way valves. Said invention also provides the concrete connection mode of all the above-mentioned portions and the concrete working principle of said same floor drainage system.

The invention relates to fuel battery guiding board which is not easy to stop water, the guiding board is guiding two-way board, said guiding two-way board comprises positive air guiding groove, negative hydrogen guiding groove, middle cooling flow interlayer, said flow hole which air or hydrogen in and out is single hole for in, two or more hole for out, guiding groove and connecting groove which connects guiding groove are set between flow hole for air or hydrogen, the guiding groove and connecting groove are all designed to direct flow groove or nearly direct flow groove; said flow hole for cooling liquid is single hole or double holes or more holes for in, two holes or more holes for out, guiding groove and connecting groove which connects guiding groove are set between flow hole for cooling liquid, the guiding groove and connecting groove are all designed to direct flow groove or nearly direct flow groove. Comparing with current technique, the invention can make liquid flow on liquid field evenly, freely; jam of guiding groove can be avoided.

The invention relates to a medical drainage tube, and especially relates to an anti-blocking abdominal cavity perfusion chemotherapy drainage tube; the drainage tube comprises an inner tube used for washing and an outer tube sleeved outside the inner tube and used for draining; a plurality of fixing sheets are arranged between the outer wall of the inner tube and the inner wall of the outer tube; the end wall of one end, extending into human body abdominal cavity, of the outer tube is arranged in an arc surface extruding outwards, and the center of the arc surface is provided with a front drainage hole; the side wall of the outer tube extending into the human body abdominal cavity is provided with a plurality of side drainage holes arranged in a spiral shape on the outer tube in the axial direction; the opening of one end of the inner tube is close to the front drainage hole, and can correspondingly wash the front drainage hole; the side wall of the inner tube is provided with a plurality of washing holes corresponding to the side drainage holes. The anti-blocking abdominal cavity perfusion chemotherapy drainage tube is reasonable in structure, big in washing scope, good in drainage effect, smooth and anti-blocking, convenient in usage, so patients can be comfortable in treatment, thus better carrying out abdominal cavity heat perfusion chemotherapy.

The invention discloses a constant-pressure water jet cavitation test device which comprises a water return tank, a constant-pressure variable-frequency water supply device, a pressure tank, a base, a bottom plate, a jet chamber, a nozzle fixing pipe, a jet nozzle, a silicone mat sealing ring, a transparent organic glass plate, a pressing top plate, a sample, a sample fixing pipe and a drainage flange, wherein the transparent organic glass plate is arranged at the upper end face of the jet chamber; the pressing top plate is arranged on the transparent organic glass plate; the bottom plate is arranged at the lower end face of the jet chamber; the bottom plate is arranged on the base; the nozzle fixing pipe and the sample fixing pipe are both arranged on the pipe wall of the jet chamber; the jet nozzle is arranged on the nozzle fixing pipe; the sample is arranged on the sample fixing pipe; the sample oppositely and directly corresponds to the position of the jet nozzle, and the jet nozzle is communicated with the constant-pressure variable-frequency water supply device and a diaphragm pressure cavity. The jet test device disclosed by the invention is compact and reasonable in structure and strong in generality, can be used to flexibly and simply dismantle the sample, and can carry out different cavitation degree tests on a plurality of groups of sample materials by adjusting the jet speed and jet distance.

The invention relates to a frame type low-position draining system tunnel lining structure. The frame type low-position draining system tunnel lining structure comprises a primary arch wall support structure, a secondary arch wall lining structure and a base plate which are sequentially arranged in an arch wall range from outside to inside and a water preventing and draining system located between the primary arch wall support structure and the secondary arch wall lining structure, wherein a tunnel bottom frame structure formed by foundation beams, short columns and crossbeams is arranged below the base plate to serve as the transverse bearing structure of the secondary arch wall lining structure and the vertical bearing structure of the base plate. The lower end of the draining system is arranged in a longitudinal tunnel draining channel in the internal space of the tunnel bottom frame structure in an oriented manner. The frame type low-position draining system tunnel lining structure has the advantages that a traditional tunnel lining tunnel bottom structural form is modified, the stress form of the tunnel bottom structure is changed, the effect of underground water on the tunnel lining bottom structure is reduced even eliminated, draining outside the lining structure is achieved at the same time, and accordingly the safety of the tunnel lining structure during operation especially in rainy and flood seasons is guaranteed.

Disclosed are a medicament for the treatment of burns and sore and ulcer diseases, and a wound plaster made of the same. The invention belongs to the technical field of traditional Chinese medicine, and specifically relates to a medicament for the treatment of burns and sore and ulcer diseases. The medicament mainly comprises, by weight, 35 to 65 parts of rosin, 20 to 40 parts of borneol, 30 to 90 parts of beeswax and 500 to 1000 parts of sesame oil. All the components in the invention are in reasonable allocation and complement each other. The utilization of the invention enables effective treatment of burns and scalds and skin ulcer, alleviating pains of patients.

The invention discloses a frame support arch tunnel lining structure. The side wall structure cracking damage due to insufficient drainage capacity when underground water increases dramatically in rainy and flood seasons is effectively avoided, the action of underground water on a tunnel lining bottom structure is reduced or even eliminated, and thus the damage risk of underground water to the lining structure in rainy and flood seasons is eliminated. The frame support arch tunnel lining structure comprises a primary arch wall supporting structure, a secondary lining structure body and a waterproofing and drainage system located between the primary arch wall supporting structure and the secondary lining structure body. The secondary lining structure body comprises an arch crown section, side wall sections and an inverted arch section. The side wall sections are side wall frame support structures and are used as bearing structures of the arch crown section. The inverted arch section is a tunnel bottom frame structure with an internal cavity. A bottom plate is laid on the top face of the tunnel bottom frame structure. An annular end opening of the waterproofing and drainage system is led to the internal cavity of the tunnel bottom frame structure.

The invention relates to a meshed blind drain leading and draining water method for groundwater in landfill life waste site, and installs a meshed directing blind drain on an entire warehouse bottom and a side slope which is grade separated with the anchoring groove of every layer opening. An upper opening is up to the planning regional of the landfill site, while a lower opening is connected with an annular directing blind drain. A main groundwater drain is longitudinal installed on the lowest part of the warehouse bottom, and a fishbone-shaped directing blind drain is spread between the main groundwater drain and the annular directing blind drain. The outlet end of the main groundwater drain is positioned at the warehouse dam which is equipped with actinoform fan-shaped draining pipes at the forward. The invention drains out the water timely and ordered via the groundwater influence channel with the meshed directing blind drain, and prevents overflowing, forming water collection and ballooning bag, thereby guaranteeing the soil of the warehouse keeping hard, protecting impervious layers, and eliminating water contamination accidents. The invention guarantees the base and the impervious layer of the warehouse in working order, thereby preventing the water contamination and keeping safety and healthy.

To improve an output of a fuel cell and power generation efficiency by enhancing drainage of the fuel cell upon actuation below freezing temperature. In a fuel cell system that generates power by supplying fuel gas and oxidant gas, the output of the fuel cell is measured when a temperature of the fuel cell after the actuation below freezing temperature exceeds 0 degree, and if a value of the output is equal to or less than a reference output value, pressure pulsation is applied to a cathode electrode to drain water built up in the fuel cell.

The invention refers to a filtering unit and ballast water production equipment provided with same. The filtering system (1) in ballast water production equipment in a ship (S) is provided with a filtering unit (4) for filtering raw water (RW) taken into the ship (S) and supplying the filtered raw water to a ballast tank (6), a gas supply path (12) for supplying compressed air (A) to a depth filter (10) that forms a filtering membrane in the filtering unit (4) to thereby clean the depth filter, and a discharge path (14) for discharging the compressed air (A) that has cleaned the depth filter (10), together with the raw water (RW) in the depth filter (10), to the outside of the ship (S), the discharge path being connected to the filtering unit (4), wherein the pore diameter of the filtering membrane that forms the depth filter (10) falls within the range of 1-25 [mu]m.

The invention discloses a chemical siltation resisting drainage device for a tailing dam, comprising a drainage pipe, a siltation resisting trough, water seepage holes, water seepage troughs and geotextiles. The invention is characterized in that the drainage pipe is a circular pipe, and the end part of the pipe is provided with the water seepage troughs and the water seepage holes, and the water seepage troughs are tightly wrapped by the geotextiles; the siltation resisting trough is a rectangular box body having no cover, and the front end of the box body is provided with a circular hole having the same pipe diameter as the drainage pipe; the drainage pipe is obliquely arranged in the siltation resisting trough of the box body at an inclination angle so as to prevent the geotextiles from generating chemical siltation and ensure that the dam body can drain normally. The chemical siltation resisting drainage device has the advantages of simple structure, high effectiveness, low cost and convenient use, and ensures that the geotextiles do not alternate between saturation and nonsaturation, thus preventing the geotextiles from generating chemical siltation. By using the chemical siltation resisting drainage device, the drainage capability of the dam is reinforced, thus ensuring smooth drainage, reducing the seepage line of the dam effectively and accordingly lowering the operation risk of the tailing dam.

A reinforced concrete assembly type cable duct is formed by connecting sections of U-shaped duct bodies, each U-shaped duct body is formed by splicing two half L-shaped duct bodies in left-and-right symmetry, a plurality of steel bar connection sleeves arranged inwards respectively are correspondingly and transversely reserved on the spliced edges, at the spliced parts, of bottom plates, and when every two half L-shaped duct bodies are spliced together, short steel bars performing the functions of positioning and connecting are inserted in the steel bar connection sleeves corresponding to the two half L-shaped duct bodies. The manufacturing method comprises the steps of factory fabrication, positioning paying off, earth excavation, bedding layer construction, in-place hoisting, connecting joint pouring, cable support fixation, cable laying and cover plate laying. The reinforced concrete assembly type cable duct has the advantages of being convenient to convey, easy and convenient to splice, reliable in water resistance, smooth in water drainage, capable of being assembled on site and the like.

The invention relates to a tunnel siphon water drainage system and a construction method thereof. The water drainage system comprises a drilling hole which is formed in a water seepage point in the wall of a tunnel, a water reservoir arranged on the bottom of the drilling hole, a siphon sleeve communicated with the water reservoir, a water storage barrel and a longitudinal water drainage ditch, wherein an included angle between the drilling hole and a vertical direction is 45-75 degrees; one end of the siphon sleeve is inserted into the drilling hole and is communicated with the water reservoir, and the other end of the siphon sleeve is vertically guided out from the drilling hole, and is arranged in the water storage barrel; a water outlet of the siphon sleeve is lower than the water reservoir by 40-60 cm; during construction, drilling is firstly carried out, the water reservoir and the water storage barrel are arranged, and the two ends of the siphon sleeve are separately inserted into the water reservoir and the water storage barrel. Compared with the prior art, the tunnel siphon water drainage system has the advantages that underground water near the water seepage point in the tunnel wall can be discharged timely, power is not needed to be additionally provided in a water drainage process, water drainage flow and a flow process are automatically controlled by water level changes, and smooth water drainage is effectively guaranteed.

The invention discloses an air-conditioner air supplier and a floor air conditioner. The air-conditioner air supplier comprises a plurality of hollow air guiders with air inlets and air outlets, the air guiders are arranged front and back in sequence and through air passages running through front and back are formed between the air guiders. Heat exchange air passages are formed between every two adjacent air guiders, a supplier mixed air outlet and a supplier non-heat-exchange air inlet are formed in the front end and the rear end of the air-conditioner air supplier respectively, and drainage portions extending outwards away from the through air passages and guiding the airflow into the heat exchange at least form the front air guiders of the mixed air outlet in the air guiders. The air guiders of the air-conditioner air supplier are provided with the drainage portions, the airflow can be stably, smoothly and orderly guided into the heat exchange air passages of the supplier, flow velocity of the airflow is increased and air feed noise is reduced.

The invention discloses a permanent and temporary combined anti-freezing drainage structure and method for a high altitude severe cold rich water tunnel. A parallel pilot pit is arranged on the side lower than a tunnel cavity body section and communicated with the tunnel through a transverse channel. Full section grouting is conducted on a tunnel cavity opening section full section to form a superfine cement full section grouting blocking solidification ring. Two inclined drainage holes are formed in the outside of the blocking solidification ring at the positions lower than two sides of a cavity opening. At least one end of the parallel pilot pit is communicated with the outer portion of the tunnel through a drainage cavity arranged in an inclined mode. According to the tunnel running wind flowing characteristic of high altitude severe cold zones, the parallel pilot pit which is excavated in advance in a construction period and lower than the main line tunnel position is utilized to achieve main line tunnel bottom embedded heat insulation transverse drainage, and a tunnel vertical reversed V-shaped drainage pipe is matched to improve drainage of tunnel surrounding rock water. Smooth drainage of the high altitude severe cold rich water tunnel is achieved by means of the small cavity diameter and the large-slope drainage hole which are formed through a directional drilling and hole expanding technology by water in the tunnel and matched with the middle parallel pilot pit, and safety and stability of the tunnel structure are ensured.

The invention discloses a novel floor drain; a liquid level sensor is arranged on the inner sidewall of a drain basket; the liquid level sensor is used for detecting whether the floor drain can achieve drainage; a water stopper is used for plugging a water seal main body, so that the emission of odor in a sewer pipe is prevented; and when the liquid level sensor detects the drainage, the water seal main body is opened by the water stopper and water is discharged into the sewer pipe. With the adoption of the structures, the interior of the water seal main body of the floor drain is simple, and the drainage speed of the floor drain is not affected, so that smooth drainage of the floor drain is guaranteed.

The invention relates to a no-fan flame multilayer oxygen supply energy saving burner, comprising a combustion tray and a shunt, wherein the upper part of the combustion tray is successively provided with a central combustion chamber and at least one stage of external combustion chamber from center to periphery, and the lower part of the combustion tray is provided with connecting holes which are respectively and correspondingly communicated with the central combustion chamber and at least one stage of external combustion chamber; the shunt is successively provided with a central air inlet and at least one stage of external air inlet from center to periphery, the central air inlet corresponds to the connecting hole of the central combustion chamber and is connected with the connecting hole of the central combustion chamber by an air inlet sleeving; the external air inlet corresponds to the connecting holes of each stage of external combustion chamber on the combustion tray one by one and is connected with the connecting holes of each stage of external combustion chamber by a gas pipe; gas is respectively led into the central air inlet and the external air inlet by a central inlet pipe and an external inlet pipe; the center of the combustion tray is provided with a midstream ring in which an oxygen supply pipe is spliced; and the oxygen supply pipe is installed in the air inlet sleeving and downwards passes through the shunt. The invention has reasonable and artful structure, energy saving, no noise pollution, sufficient combustion and wide application range.

The invention discloses an integrated biliary tract internal irradiation balloon drainage tube, which comprises a biliary tract drainage tube and an internal irradiation balloon. The drainage tube is characterized in that: the biliary tract drainage tube is a double-cavity drainage tube, and comprises a bile drainage cavity and an internal irradiation balloon connecting cavity next to the inner wall of the bile drainage cavity; the internal irradiation balloon is arranged on the outer wall of the double-cavity drainage tube and connected with the front end of the internal irradiation balloon connecting cavity; the outer walls of the double-cavity drainage tube on two sides of the internal irradiation balloon are provided with side holes, and the side holes are communicated with the bile drainage cavity; the front end of the double-cavity drainage tube is provided with an end hole communicated with the bile drainage cavity; the tail end of the double-cavity drainage tube is in a Y-shaped structure consisting of a straight arm and an oblique arm, the straight arm is provided with a drainage tube outer interface connected with the tail end of the double-cavity drainage tube, and the drainage tube outer interface is communicated with the bile drainage cavity; and the oblique arm is provided with an internal irradiation balloon outer interface connected with the internal irradiation balloon connecting cavity. By short-range radiotherapy in the cavities, obstructive jaundice is avoided and local tumors are effectively controlled simultaneously, and the curative effect can be improved; and the drainage tube is simple in operation, high in safety and low in expense.

The invention discloses a roadbed subsidence grouting treatment structure and a construction method thereof. The roadbed subsidence grouting treatment structure comprises a plurality of rows of grouting pipe groups which are arranged on both sides of a central division strip of a roadbed and inserted at the interior of the roadbed horizontally from the outer side of the roadbed, wherein each row of grouting pipe groups comprise a plurality of grouting pipes; a plurality of grouting pipes in the same row are exposed at one end of the outer side of the roadbed and are communicated with one side of a same connecting pipe; the other side of the connecting pipe is communicated with a grouting main pipe; and drainage sewers in the same direction as the grouting pipes are arranged between two adjacent rows of grouting pipe groups. The grouting effect of a plurality of grouting pipes can be ensured, and accumulated water in the roadbed is drained in time; and moreover, the construction technology is simple, and the manufacturing cost is low.

The invention discloses an integrated silt loosening and sucking device for removing silt, which comprises a high-pressure water inlet pipe, a high-pressure water nozzle, a silt suction head cap and asilt outflow pipeline, wherein the silt suction head cap is connected with one end of the silt outflow pipeline; the high-pressure water inlet pipe comprises a first water outlet and a second water outlet; a high-pressure water flow passage is arranged in the silt outflow pipeline; the inlet of the high-pressure water flow passage is connected with the second water outlet; the outlet of the high-pressure water flow passage is communicated with the inner cavity of the silt outflow pipeline and is in the same direction of the silt outflow pipeline; the high-pressure water nozzle is arranged onthe silt suction head cap; and the water inlet of the high-pressure water nozzle is connected with the first water outlet of the high-pressure water inlet pipe. Compared with the prior art, the devicehas the advantages of reasonable and simple integral structure, light weight, convenient transportation and no movable components, has the functions of modularized unit combination and the like and is free of maintenance; the specification and the performance of the device conform to the dredging standard; the device is peculiar in structural design, and can regulate the optimal flow rates for suction and spraying according to the characteristics of the silt; the device can drain flow smoothly; and the pipe cavity is not easily blocked.

The invention relates to a vacuum-exhausting-type screw barrel. A heating layer is arranged on the outer wall of the barrel, a feeding screw is arranged in the barrel, a hopper mounting hole and a vent hole are formed in the barrel, the vent hole is connected with a vacuum pump, the feeding screw is divided into a metering feeding plastifying section, a forcedly-pressurizing plastifying section, a feeding pressure-reduction plastifying section and a forcedly-feeding plastifying section, the vent hole is arranged in the feeding pressure-reduction plastifying section, three grooves are formed in the inner wall of the barrel, the lengths of three grooves are consistent to a distance from the hopper mounting hole to the rear end part of the barrel, and an electric heating coil is arranged above the vent hole and at the lower end of the vacuum pump. Compared with the prior art, the vacuum-exhausting-type screw barrel is provided with the three grooves, the lengths of the three grooves are consistent to the distance from the hopper mounting hole to the rear end part of the barrel, and the electric heating coil is arranged above the vent hole and at the lower end of the vacuum pump. The vacuum-exhausting-type screw barrel is used for an exhaust-type injection molding machine.

The invention discloses a squeezing type dewatering machine, which comprises a frame. A filter cylinder with filtering holes is fixed onto the frame, a conical screw rod with a helical blade is mounted in the filter cylinder, the filter cylinder comprises a primary filter cylinder body and a secondary filter cylinder body which are connected with each other, the primary filter cylinder body is provided with a feeding port, the secondary filter cylinder body is conically contracted along the pushing direction, and a squeezing cylinder is connected to the tail end of the secondary filter body. The conical screw rod penetrates through the primary filter cylinder, the secondary filter cylinder and the squeezing cylinder, a discharging device is arranged at the tail end of the squeezing cylinder, and the conical screw rod is driven by a power device. Materials can be dewatered for three times by means of the squeezing type dewatering machine, and since the conical screw rod is conical and the secondary filter cylinder body is conically contracted along the pushing direction, the space between the conical screw rod and the secondary filter cylinder body is small, and materials can be better dewatered. The squeezing type dewatering machine is low in required centrifugal rotation speed, high in dewatering capacity, low in noise pollution and environment-friendly.

The invention belongs to the technical field of water tanks, and particularly relates to a water tank convenient to clean. The water tank comprises a tank body, a drainage opening is formed in the bottom of the tank body, a drainage pipe communicating with the drainage opening is mounted at the lower end of the tank body, first cavities matched with the side walls of the tank body are formed in the side walls of the tank body, connectors are formed in the inner walls of the left and right ends of the first cavities correspondingly, first fixed pulleys are mounted on the top faces of the connectors and the top faces of the first cavities correspondingly, second fixed pulleys in one-to-one correspondence with the two connectors are fixedly mounted at the lower end of the tank body, scrapingrings for clearing the inner wall are arranged in the tank body, the upper ends of the scraping rings are fixedly connected with traction lines, the free ends of the traction lines sequentially penetrate through the two first fixed pulleys and the corresponding second fixed pulley and penetrates through the side wall of the drainage pipe, and a driving mechanism used for driving a water flow is arranged in the drainage pipe. The water tank has the advantages that the water tank has a self-cleaning effect, and a filter hopper can be further prevented from being blocked.

A dewatering installation, particularly a dewatering installation of a planting roof of a horizontal underground garage, of which a drain line consisting of a plurality of floor drains, a plurality of branch drain pipes, a drain pipe, a water funnel and a collecting tank is installed on the planting roof, the branch drain pipes and the floor rains are correspondingly provided, one end of the branch drain pipe is respectively communicated with the floor drains while another end thereof is respectively communicated with the drain pipe, the drain pipe is provided and communicated with the water funnel, another end of the drain pipe is communicated with the collecting tank, the upper water pipe line is mainly composed of a submersible pump, an upper water pipe and a fountain head, the submersible pump is mounted in the collecting tank, one end of the upper water pipe is connected with the submersible pump while another end thereof is communicated with a branch water pipe, and the branch water pipe is connected with the fountain head. The installation is of built-in drain type, structure is simple, and drain is smooth, the installation has not only solved difficulty in finding gradient while providing the planting roof in the underground garage, but also solved a problem of drain and ventilation of the planting roof, so that phenomenon of root rot or 'drown' of plants on the planting roof caused by too much water in the soil can be effectively avoided.

The invention relates to a large storage amount water storing and draining plate suitable for roof greening. The large storage amount water storing and draining plate comprises a plastic plate face, honeycomb water storing bottles, communicating grooves, draining holes, supporting columns, non-woven geotextiles and water absorbing belts. The plate face, the water storing bottles, the communicating grooves and the supporting columns are all made of high density polyethylene (HDPE) plastic base plates after stamping. The water storing bottles are arranged on the plate face in a honeycomb mode and connected through the communicating grooves. The water storing space is large, and meanwhile uniform water distributing is achieved. The draining holes are formed in the plate face. The supporting columns are arranged below the plate face. One layer of the non-woven geotextiles is adhered on the plate face and the bottom of the each bottle correspondingly. The water absorbing belts are arranged in the position, of the communicating grooves, of the geotextiles of the plate face and stretch in the bottoms of the bottles in the position of the water storing bottles. The structure is reasonable, forming is convenient, construction is convenient, maintenance is simple, the mechanical property is good, universality is high, system adaptability is strong, and meanwhile the multiple functions of water storing, water draining, filtering, ventilating, heat insulation, noise reduction, root thorns resisting and the like are achieved; and stored rainwater can be utilized to replenish water for a matrix.