46results about How to "Reduce the chance of water leaks" patented technology

A basement engineering waterproof and drainage method is provided. The wall footing of the outside wall in basement engineering is embedded in watertight or micro-watertight soil rock layer or cement soil layer. The wall footing intercepts water by a thin-part structure. The cushion of the basement engineering soleplate and the falling layer of the top board are composed of combined water-proof layers. The late poured band, the movement joint and the horizontal construction joint at the lower part of the outside wall are treated by a water-proof structure combined with waterproofing measures. The basement engineering is provided with a drainage system. The groundwater and surface water at the soleplate are drained into city drainage pipelines via a soleplate part of the drainage system. The rainwater of overburden layer bottom of the top board is then drained into city drainage pipelines via the indoor part of the drainage system. The invention is designed by adopting a one-body method of arranging the basement engineering waterproofing, drainage and anti-floating as well as underground engineering space enclosing structure and pipelines, thereby shortening the construction period, reducing the engineering cost, increasing the durability and reliability of underground building space enclosing structure and waterproof layer as well as pipelines.

The invention discloses an uncured polyurethane waterproofing coating and a preparation method thereof, belonging to the technical field of polyurethane waterproofing coatings. The uncured polyurethane waterproofing coating is prepared from the following raw materials in percentage by weight: 13-20% of prepolymer, 30-65% of asphalt, 1.0-1.5% of latent curing agent, 3-15% of compatilizer, 2-9% of thermoplastic elastomer and 0-3% of powder stuffing, wherein prepolymer is a substance synthesized by reaction between polyether and isocyanate. The uncured polyurethane waterproofing coating mainly aims to improve the material proportion and polymerization process of polyurethane, and the problem that a hot-melted asphalt material is needed to be heated by using a machine is solved; the uncured polyurethane waterproofing coating is convenient in construction and good in flowability; the viscosity of the constructed material can be automatically enhanced, so that the constructed material can become an elastic plastic body and a favorable waterproofing layer without internal stresses; in addition, the uncured polyurethane waterproofing coating can be well bonded with a coiled material and can be compounded to be waterproof so as to form a waterproofing layer capable of overcoming tension fracture caused by basement layer cracking and preventing puncturing; the uncured polyurethane waterproofing coating is simple and convenient in process, rapid in construction, free of maintenance, high in working efficiency and capable of becoming the development direction of building waterproofing in the further.

The invention relates to building roof structure s, in particular to a drainage structure of a planted roof. The drainage structure of the planted roof comprises a roof structure layer, a plant soil layer directly or indirectly arranged on the roof structure layer, a water drainage opening formed in the plant soil layer, a rainwater hopper connected at the bottom of the water drainage opening and inlaid in the roof structure layer, and a water drainage pipe for communicating the plant soil layer with the water drainage opening so as to drain infiltrating water in the plant soil layer to the water drainage opening, wherein the water drainage opening is formed by surrounding of a well wall on the roof structure layer. By the drainage structure of the planted roof, overland flows on the planted roof and the infiltrating water under plant oil on the planted roof can be converged and drained together with rainwater, so that the number of the rainwater hoppers is decreased, engineering cost is saved, and roof leakage probability is decreased.

The invention discloses a construction method for treating a rock mass cavity without formworks in tunneling. The method includes the following steps of firstly, arranging an inner protection layer and an outer protection layer; secondly, constructing a protection arch, wherein concrete is poured between the inner protection layer and the outer protection layer to form the protection arch; thirdly, conducting chamber excavation and preliminary support construction, wherein tunneling chamber excavation and preliminary support construction are conducted under protection of the protection arch, water leakage holes and hydraulic reclamation holes which are communicated with the protection arch are reserved in a preliminary support, and water leakage pipes and hydraulic reclamation pipes are embedded in the holes respectively; fourthly, forming a graded broken stone buffer layer through hydraulic reclamation, wherein hydraulic reclamation should be sequentially conducted on graded broken stone from bottom to top, and the whole hydraulic reclamation work is completed step by step; fifthly, forming a secondary lining through pouring. By means of the method, construction risks caused by tunnel rock mass cavity section collapse, stone falling and other disasters can be effectively reduced, the treatment speed is increased, the engineering cost is reduced, the treating quality of the tunnel rock mass cavity is ensured, safety during tunnel operation is improved, and the maintenance cost is reduced.

The invention discloses a building expansion joint waterproof structure comprising an elastic cushion, a first waterproof component and a second waterproof component. The elastic cushion is fixedly installed on an expansion joint. The first waterproof component is provided with a first draining groove and a U-shaped first connecting portion. The second waterproof component is provided with a second draining groove and a U-shaped second connecting portion. The structure of the second waterproof component and the structure of the first waterproof component are symmetrical. The first waterproof component and the second waterproof component are connected in a buckled mode through a first connecting portion and a second connecting portion and fixedly installed on the elastic cushion. After the first connecting portion and the second connecting portion are connected in a buckled mode, a gap is preserved between the first connecting portion and the second connecting portion. By the adoption of the building expansion joint waterproof structure, the problem that leakage is caused due to aging, contracting and cracking of a waterproof structure, inconsistent sedimentation coefficients and other factors can be effectively solved, and the technical purpose of preventing seepage of expansion joints in a bathroom and other building spaces is achieved; in this way, a series of problems such as later-period water leakage and maintenance inconvenience can be effectively avoided, the later-period maintenance cost is effectively reduced, and the construction quality and the waterproof quality are guaranteed.

The invention provides a fixing part, comprising a body and a boss, wherein the body is of a hollow structure and comprises a front end and a tail end; the boss is arranged on the outer wall of the front end and comprises an L-shaped side face formed by a first side face and a second side face; a bulge facing to the tail end is arranged on the top end of the first side face; the bulge, the first side face and the second side face form a first groove; the height of the bulge is one fifth to three fifths of the width of the second side face; a matching face is milled in the second side face. After the technical scheme is applied, since the design of the first groove is adopted, and a seal ring is used for sealing the first groove, the anti-pressure capability is strong, and the seal performance is good; no professional and technical personnel are needed, so that the cost is low; the matching face is milled in the periphery of the second side face, the fixing part is tightly matched with other devices in the using process, the rotation is prevented, and the seal performance is good.

The invention relates to a non-curing polyurethane waterproof coating and a preparation method thereof, belonging to the technical field of polyurethane waterproof coating. It consists of the following raw materials in percentage by weight: prepolymer 13-20%, asphalt 30-65%, latent curing agent 1.0-1.5%, compatibilizer 3-15%, thermoplastic elastomer 2-9%, powder Sexual filler 0-30%, the prepolymer is a reaction composition of polyether and isocyanate. The core of the invention improves the material ratio and polymerization process of polyurethane, which overcomes the problems that hot-melt asphalt materials need to be heated by machines, etc. It is convenient for construction and has good fluidity. The waterproof layer without internal stress can also have good adhesion with the coiled material. It can be composited waterproof to form a waterproof layer that overcomes the cracking of the base layer and prevents puncture. The process is simple and can be quickly constructed. It needs maintenance and has fast work efficiency, which can become the development direction of building waterproofing in the future.

The invention discloses a drainage riser connector of a caisson-type toilet. The drainage riser connector comprises a riser connecting pipe, wherein a lead-in pipe connecting opening is formed in the upper part of the riser connecting pipe; a lead-out pipe connecting opening is formed in the lower part of the riser connecting pipe; the riser connecting pipe is of a structure with an annular waist base extending outwards around the middle section and an annular waist leakage liquid lead-in channel formed on the annular waist base; the annular waist leakage liquid lead-in channel comprises an annular waist leakage liquid collection opening formed in the top surface of the annular waist base, an annular waist leakage liquid lead-in opening which introduced into the riser connecting pipe from the lower part of the annular waist leakage liquid collection opening, and an annular waist leakage liquid diversion cavity connected between the annular waist leakage liquid collection opening and the annular waist leakage liquid lead-in opening; the riser connecting pipe is provided with a diversion baffle for preventing down water from flowing backward into the annular waist leakage liquid lead-in opening in the inner wall corresponding to the position above the annular waist leakage liquid lead-in opening. Compared with the prior art, the secondary drainage problems of drainage caissons at the same layer can be thoroughly solved.

The invention discloses a water-saving control valve for tap water, which comprises a valve body, a water inlet and a water outlet. The valve also comprises a valve rod arranged in the valve body, a sealing ring fixedly arranged on the valve rod, a sealing grid arranged on the valve body, a check base, a check spring, a floating diaphragm, a diaphragm gland and a pressure regulating elastic device. When the water is used, the water pressure under the floating diaphragm is decreased, the floating diaphragm pushes the valve rod to move downwards under the action of the pressure regulating elastic device, the valve rod drives the sealing ring to move, the sealing ring leaves the sealing grid, the tap water flows to the water outlet through the gap between the valve rod and the sealing grid, and at the moment, the water pressure is decreased and the impact of the tap water on a water using device is decreased. When the water is not used, the water pressure under the floating diaphragm is increased, the floating diaphragm moves upwards, the valve rod moves upwards under the action of the check spring, and the sealing ring and the sealing grid are clamped together so as to cut off the tap water, decrease the probability of water leakage, lower the corrosion rate, and greatly decrease the explosive probability of the water using device.

The invention relates to a novel high-pressure manifold device. The novel high-pressure manifold device comprises a linear center manifold. A discharging port is formed in the rear end of the center manifold. A series connection-in port is formed in the front end of the center manifold, the rear end of the upper side of the center manifold is vertically connected with a first liquid inlet channel,and the front end of the lower side of the center manifold is vertically connected with a second liquid inlet channel. The center manifold is in a linear shape, the reducing area and friction lossesof the center manifold are reduced, sand setting of the high-pressure manifold is reduced, and the fracturing construction safety coefficient is improved. In addition, the included angle between the first liquid inlet channel and the center manifold and the included angle between the second liquid inlet channel and the center manifold are right angles, and accordingly erosion abrasion to the novelmanifold device from high-pressure fluid can be effectively reduced. The first liquid inlet channel and the second liquid inlet channel are arranged in a staggered manner, the vortex state of the high-pressure fluid in the center manifold can be reduced, and vibration caused by high-pressure manifold impacts due to the high-pressure fluid is reduced.

The invention provides a pressurized pipeline type water purifier and a packaging method thereof. The pressurized pipeline type water purifier comprises a front composite filter element and a composite RO (reverse osmosis) membrane reverse osmosis filter element, wherein a tap water inlet is formed in the front end of the front composite filter element; a pure water outlet and a concentrated water outlet are formed in the rear end of the composite RO membrane reverse osmosis filter element. Pure water is obtained through matched use of the front composite filter element and the composite RO membrane reverse osmosis filter element, the two filter elements are directly connected or connected through a connection pipeline, common PE (polyethylene) pipeline connection in an RO filtering machine is eliminated, water leakage points and the number of filter flasks are reduced, and the assembly efficiency of the water purifier is improved. The front composite filter element is connected with a pressurizing device, during quick water production, initially filtered water enters the pressurizing device from a low-pressure water outlet for pressurization and then flows into the composite RO membrane reverse osmosis filter element through a central high-pressure water outlet pipe, the water production capacity is improved, an RO membrane can be washed, and the service life of the RO membrane is prolonged.

The invention relates to a cleaning type solar water heater convenient to dismount and mount. The cleaning type solar water heater comprises a mounting plate, two water tanks and at least two heat collection pipes, and further comprises a dismounting and mounting mechanism and a cleaning mechanism. The dismounting and mounting mechanism comprises two sliding rods, two drive blocks, two drive assemblies and at least two mounting assemblies. Each mounting assembly comprises two mounting units. Each mounting unit comprises a sealing sleeve pipe, a first airbag, a second airbag, an air conveying hole, a limiting ring and a supporting sleeve pipe. The cleaning mechanism comprises a flow guide pipe, a purification box, a filter screen, a water pump, a one-way valve, a water conveying pipe and two ultrasonic transmitters. Each drive assembly comprises a lead screw and a motor. In the cleaning type solar water heater convenient to dismount and mount, through the dismounting and mounting mechanism, dismounting and mounting convenience of the heat collection pipes is improved, maintenance convenience of the solar water heater is improved, descaling can be carried out on the solar water heater through the cleaning mechanism, and the heating efficiency of the solar water heater is improved.

A construction method for preventing diaphragm wall from streaming comprises the following steps of: filling a plurality of sand bags behind an I-beam of a primary slot section, wherein the sand bags are small-volume normal woven bags filled with 1 / 3 volume of sand, bag mouths are tied firmly and the bags are paved, the sand in the bags are loose, and the bags are arranged behind the I-beam, and beaten and compacted by a steel box hammer so that the sand bags are filled behind the I-beam completely; repeating the operation till the whole process is finished; and taking out the filled sand bags when drilling during a secondary slot section. With the adoption of the method, the purpose of tight connection between the concrete of the secondary slot section and the I-beam joint in the diaphragm wall construction is achieved. The construction method has the characteristics of being convenient in construction and easy in operation, the streaming of concrete is avoided, the concrete of the secondary slot section is tightly combined with the I-beam joint, and the water leakage rate of the underground diaphragm wall is reduced.

The invention discloses a water tank with a dual water valve and a humidifier. The water tank comprises a water storing cavity, a first water valve, a water draining cavity, a second water valve and aforce transmission mechanism; the cavity bottom of the water storing cavity is provided with a first water draining channel; the first water is arranged in the first water draining channel; the waterdraining cavity communicates with the first water draining channel, and the cavity bottom of the water draining cavity is provided with a second water draining channel arranged to be not coaxial to the first water draining channel; the second water valve is arranged in the second water draining channel; and the force transmission mechanism is used for controlling a first valve element of the first water valve to enable the first water valve to be opened after the second water valve and closed before the second water valve, and the force transmission mechanism is arranged under the first valveelement. According to the water tank with the dual water valve and the humidifier, the dual water valve structure is adopted, therefore, the dual water draining protection effect can be truly achieved, the water draining sealing effect is greatly improved, and the water leakage probability is extremely low.

The invention provides a die device. The die device comprises a die holder, at least one die core, a plurality of fluid pipelines and at least one guide plate, wherein the die holder is provided witha first side and a second side which are opposite to each other, a groove is formed in the first side of the die holder, and the die core is arranged between the first side and the second side; the fluid pipelines are arranged on the die holder in a penetrating mode to generate fluid circulation changing the temperature of the die core, and the ends, corresponding to the first side, of the fluid pipelines are positioned in the groove; and the guide plate is fixed to the die holder, at least one flow channel is defined by the guide plate and the first side of the die holder, and the ends, corresponding to the first side, of the fluid pipelines communicate with the flow channel.

The invention discloses a construction device and a construction method of a lock catch type steel pipe pile cofferdam, The device is a cofferdam ( which is in an axial direction parallel mold ) whichis formed by connecting a plurality of locking notch steel pipe piles in parallel, C-shaped female locking notches and T-shaped profile steel are welded to the outer side walls of the two sides of the steel pipe piles along the axis directions of the steel pipe piles correspondingly. According to the device and the method, the structure construction speed is fast, the manufacturing and installingprocess are simple, large mechanical equipment is not needed, and floating facilities are not needed; a male and female joint is adopted by a steel pipe pile joint, so that the number of lock catchesis reduced, and the water leakage probability of the cofferdam is reduced; the water plugging effect can be achieved by simply adopting bentonite processing and the like in the lock catches, the recycling of the steel pipe piles can be ensured, steel is saved, and economy and affordability are achieved.

The invention relates to a heat radiator, formed by at least one radiation fin, wherein said fin comprises two end posts, and middle radiation tube; said post has post cap and post cover, while the post cap is punched chamber whose one end is open and another end is sealed, and the open of post cap is welded with post cover shaped in the same as open; the post cover has through hole; the post cover and post cap are welded into one body; the post has radiation tube connecting through hole; the post through hole is the post cover through hole; the open of radiation tube is welded with the post cover through hole; the side surface of post cap has through hole, as the connecting through hole between radiation fins, to be connected via the connecting tubes, to form a group of radiators.

The invention discloses a water outlet pipe assembly of an engine. The water outlet pipe assembly comprises a large circulating pipe and a small circulating pipe which can be used as a warm air water return pipe; and the inlet end of the large circulating pipe and the inlet end of the small circulating pipe are connected to a public flange and are connected with an engine cylinder block by the public flange. The large circulating pipe, the small circulating pipe and the warm air water return pipe in an engine cooling circulation system can be integrated to form the integrated water outlet pipe assembly of the engine, so that the amount of special parts of the engine is reduced, meanwhile, a cooling loop is enabled to be simpler, the cost is lower, and the water leakage probability of a cooling system is reduced.

The invention discloses a wire drawing system for drawing a steel wire. The wire drawing system comprises a wire drawing machine, a guide roller frame and a rotary wire drawing device which are arranged in sequence, the wire drawing machine comprises a pay-off rack, the pay-off rack comprises a machine base and a pay-off channel arranged on the machine base, one end of the pay-off channel is connected with the wire drawing machine, and a bearing cover plate is arranged at a port of the other end of the pay-off channel; a pay-off roller is arranged on one side of the bearing cover plate; the guide roller frame comprises a machine base, a fixed box body arranged on the machine base and a guide roller set, the guide roller set is arranged in the fixed box body, and a steel wire passing opening is formed between guide rollers in the guide roller set; the rotary wire drawing device comprises a base and a box body arranged on the base, a barrel is arranged in the box body, a wire drawing cavity and a wire drawing die are sequentially arranged in the barrel body, the barrel body is sleeved with a worm gear, and the worm gear is connected with a worm. The rotating service life is prolonged, the workload of machine maintenance workers is reduced, the maintenance cost is reduced, the stopping maintenance time is shortened, and the working efficiency is improved.

The invention discloses a water-leakage-proof upward water adding humidifier. Opening and closing of a water outlet of a water tank are controlled by using double valve bodies by the water-leakage-proof upward water adding humidifier, so that the possibility of water leakage of the water tank is reduced, and the space occupied by the double valve bodies is reduced; and the upward water adding humidifier comprises the water tank, a water discharging part used for communicating with an atomization cavity is arranged on the water tank, a first water outlet hole and a second water outlet hole which are connected in series are formed in the water discharging part, a first valve body is arranged at the first water outlet hole, a second valve body is arranged at the second water outlet hole, thecritical point lies in the fact that a through hole is formed in an valve element of the second valve body, an valve element of the first valve body penetrates through the through hole, a detecting and driving mechanism is further arranged on the upward water adding humidifier, the detecting and driving mechanism controls the first valve body and the second valve body to act in a mode that the valve element of the first valve body and the valve element of the second valve body are driven to move, the first valve element is arranged with an auxiliary sealing ring in a sleeve mode, and when thefirst valve body and the second valve body are both closed, the auxiliary sealing ring abuts against the end face of the valve element of the second valve body.

The invention provides an integrated water heater. The integrated water heater comprises an inner container, a water inlet pipe and a water outlet pipe, wherein a connecting port is formed in the inner container, and the upper end of the water outlet pipe penetrates through the connecting port, and extends into the inner container; the water inlet pipe sleeves the water outlet pipe and is fixed with the connecting port; a first water inlet channel is formed between the water inlet pipe and the water outlet pipe, and the first water inlet channel communicates with the inner container; and the water inlet pipe is connected with a water inlet, and the water inlet communicates with the inner container through the first water inlet channel. According to the integrated water heater, connecting ports between the water inlet pipe and the inner container, and between the water outlet pipe and the inner container are reduced, so that the water leakage probability is reduced, and the product quality is improved.

The invention belongs to the field of dish-washing machines, and discloses a dish-washing machine. The dish-washing machine comprises a liner and a water channel. The connecting part of the liner andthe water channel is sunken downwards in a cylindrical shape. A planar filtering net is placed in the sunken part of the liner. A supporting piece is annularly arranged between the planar filtering net and the bottom face of the sunken part and used for supporting the planar filtering net. According to dish-washing machine, the connecting part of the liner and the water channel is sunken downwardsin the cylindrical shape, the planar filtering net is placed in the sunken part, thus compared with that of an existing liner structure with two steps, the space occupied by a water way can be reduced, and accordingly, the space utilization rate of the bottom of the liner is increased; through the liner structure, the manufacturing cost can be reduced; and by arranging the supporting piece, fastening force between the water channel and the liner is more balanced, the probability of water leakage is decreased, and meanwhile, a gap between the planar filtering net and the bottom face of the sunken part of the liner is enlarged, so that the water flow is smoother.

The invention relates to building roof structure s, in particular to a drainage structure of a planted roof. The drainage structure of the planted roof comprises a roof structure layer, a plant soil layer directly or indirectly arranged on the roof structure layer, a water drainage opening formed in the plant soil layer, a rainwater hopper connected at the bottom of the water drainage opening and inlaid in the roof structure layer, and a water drainage pipe for communicating the plant soil layer with the water drainage opening so as to drain infiltrating water in the plant soil layer to the water drainage opening, wherein the water drainage opening is formed by surrounding of a well wall on the roof structure layer. By the drainage structure of the planted roof, overland flows on the planted roof and the infiltrating water under plant oil on the planted roof can be converged and drained together with rainwater, so that the number of the rainwater hoppers is decreased, engineering cost is saved, and roof leakage probability is decreased.

The invention relates to a communication base station with a water leakage prevention function. The communication base station comprises a body, a base, a waterproofing mechanism and a repairing mechanism, wherein the repairing mechanism comprises a guiding rod, a second moving assembly, a nozzle, a material delivery pipe, a high-pressure pump, a material storage box, two guiding rails and two first moving assemblies, and the repairing mechanism further comprises a driving assembly, a rotary shaft, a first gear, two first transmission rods, two reinforcing sleeve tubes and two transmission assemblies. According to the communication base station with the water leakage prevention function, the nozzle can be driven to move on the station through the repairing mechanism, asphalt is sprayed onthe station through the nozzle, so that the repairing of cracks on the top of the communication base station is achieved, the possibility of water leakage occurrence of the communication base stationis reduced and the practicability of the communication base station is improved, through the repairing mechanism, the communication base station can be driven to lift up and lower down, so that the possibility that accumulated water flows into the communication base station is reduced, and the practicability of the communication base station is further improved.

The invention provides a water baffle plate mechanism of a water condensation part of an air conditioning unit. The mechanism comprises the air conditioning unit, a top plate, a water receiving disc,channel steel, a first connecting part, C-shaped steel, a connecting pipe, a connecting piece, a pipe fixed clamping base, an upper water baffle plate, a lower water baffle plate, a second connectingpart, a third connecting part and a side plate. The mechanism is characterized in that the upper water baffle plate and the lower water baffle plate are both arranged in the air conditioning unit; thetop plate is arranged at the upper end of the side plate, and is fixedly connected with the side plate; the upper water baffle plate is arranged at the upper end of the lower water baffle plate; theupper end of the upper water baffle plate is connected with the top plate through the channel steel; the C-shaped steel is arranged between the upper water baffle plate and the lower water baffle plate; and the C-shaped steel is fixedly connected with the upper water baffle plate. The mechanism has the advantages of low water leakage probability, lower pressure to the water baffle plates, convenience to install and low production and installation costs.

The invention provides a swinging and collecting type spraying mechanism based on an environment-friendly watering cart and a using method thereof, belongs to the technical field of spraying mechanisms, and aims to solve the problem that after a spraying structure in a spraying mechanism on an existing environment-friendly watering cart is used up, a spraying head exposed in the external environment for a long time is very prone to being blocked by external flying dust and other sundries. The swing and collecting type spraying mechanism comprises a water tank; and a protection box body is fixed to the upper portion of the front end face of the water tank, a spraying piece is arranged in the protection box body, and four spraying heads are evenly installed at the bottom of the spraying piece. After the spraying heads are used up, a rotating shaft of a swinging and collecting motor is controlled to rotate reversely through a control switch, then a nut on the upper portion of a swinging and collecting plate drives the swinging and collecting plate, the spraying pipe and the spraying heads to move towards the interior of the protection box body, then the box door loses the thrust effect through the swinging and collecting plate moving backwards, so that the box door is closed under the gravity effect, therefore, the spraying heads cannot be exposed in the external environment for a long time, and the phenomenon of blockage caused by foreign materials such as external flying dust is avoided.

The invention discloses a waterproof structure for building expansion joints, which comprises: an elastic pad fixedly mounted on the expansion joint; a first waterproof component having a first drainage groove and a U-shaped first connecting portion; a second waterproof component, It has a second drainage groove and a U-shaped second connecting part. The structure of the second waterproof member is symmetrical to that of the first waterproof member. The first waterproof member and the second waterproof member pass through the first connecting part and the second waterproof member. The connecting parts are buckled together and fixedly installed on the elastic pad; after the first connecting part and the second connecting part are buckled together, there is a reserved gap between them. The invention can effectively solve the leakage problem caused by factors such as waterproof aging, shrinkage, cracking, and inconsistent foundation settlement coefficients, and solve the technical problem of anti-leakage of expansion joints in building spaces such as toilets, thereby effectively avoiding water leakage and damage in the later stage. A series of problems such as inconvenient maintenance can effectively reduce the cost of maintenance and repair in the later period and ensure the waterproof quality of construction.

The invention discloses an exhausting type water outlet pipe for an engine. The water outlet pipe comprises a large circulating pipe and a small circulating pipe which are fixed to each other; and an exhausting hole is formed in the wall of the large circulating pipe and is closed through an exhausting screw. According to the water outlet pipe, the large circulating pipe and the small circulating pipe of a cooling circulating system of the engine are integrated, the number of special pieces for the engine is reduced, a cooling loop is simpler, the cost is lower, the water leakage rate of a cooling system is reduced, meanwhile, the closable exhausting hole is formed in the large circulating pipe, and gas in a cooling pipeline can be effectively exhausted.

The invention discloses a construction method for treating a rock mass cavity without templates in tunnel engineering, which comprises the following steps: step 1, setting inner and outer protection layers; step 2, constructing a protective arch between the inner protection layer and the outer protection layer Pour concrete to form a protective arch; step 3, excavate the cavern and apply initial support, under the protection of the protective arch, carry out excavation of the tunnel engineering cavern and initial support construction; the initial support is reserved to communicate with the protective arch Drainage holes and blow-fill holes are pre-buried in the holes respectively. Drainage pipes and blow-fill pipes are pre-buried; step 4, blow-fill graded gravel buffer layer, blow-fill graded gravel should be blown-fill in sequence from bottom to top, and gradually complete the entire Blow filling work; step five, pouring secondary lining. The invention can effectively reduce the construction risks caused by disasters such as landslides and rockfalls in the rock cavity section of the tunnel, accelerate the treatment speed, reduce engineering costs, ensure the treatment quality of the tunnel rock cavity, improve the safety of the tunnel during operation and reduce maintenance cost.