118results about How to "Guaranteed water pressure" patented technology

The invention discloses a method for extracting residual coal bed gas in multiple layers of goafs by drilling a well from the ground and penetrating through residual coal pillars. The method comprises the following steps: drilling the well from the ground to the construction floor of the residual coal pillars, and penetrating through all the residual coal pillars; when the residual coal pillars are relatively narrow, drilling the well from the ground, penetrating through the residual coal pillars, and then directly connecting with the goafs; when the residual coal pillars are relatively wide, drilling the well from the ground, penetrating through one of the residual coal pillars to a bottom plate of the residual coal pillar, inserting a steel pipe, which is externally fixed with a high-pressure bag, to the bottom of the residual coal pillar into the well from the ground, connecting a high-pressure hose with the high-pressure bag to extend to the ground, pressing water into the high-pressure bag through the high-pressure hose to form a hole-sealing section, then injecting high-pressure water into the well through the steel pipe, fracturing the residual coal pillar, and then draining and depressurizing the high-pressure bag; continuously penetrating through the other residual coal pillars, inserting an extraction pipe into the well from the ground, and extracting the residual coal bed gas in the goafs. According to the method, the mode of drilling the well from the ground and penetrating through the residual coal pillars is adopted. The method has the advantages of low construction difficulty and low accident occurrence rate.

The invention discloses a testing device for the anti-erosion performance of a pavement base material and a testing method. The testing device is characterized in that a double-layer cylindrical transparent plastic drum is arranged on a vibrating platform; four pipes capable of adjusting the water feeding pressure are arranged at the periphery of an erosion barrel so as to pressurize water in the erosion barrel and provide pressure for water flow; the inner wall of the drum is circumferentially and vertically provided with adjustable-direction water spraying nozzles; the end parts of the water spraying nozzles are provided with positioning devices, testing time-rotating direction programming is carried out on a positioning system, and the erosion action of raindrops on the material is simulated by computer-program control. The up-down movement of a pressing rod is guaranteed by arranging up-down movement of an arranged pneumatic piston, a spring is compacted and impacted by the pressing rod, the compressing and impacting force directly act on a pressing plate and a rubber plate to simulate the instantaneous impacting action of an automobile hub on the material, and the size of the impacting force of the automobile hub on the pavement material is simulated by adjusting the moving amplitude of the pneumatic piston. The indexes for evaluating the anti-erosion performance comprise the percent of an erosion material in the total mass and the percent of the strength of the eroded test piece and the strength of the original test piece. The testing device and the testing method are worth of being promoted.

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 belongs to the technical field of shield tunneling machines, and relates to equipment for testing the airtightness and pressure resistance of a shield tail brush of a shield tunneling machine. The equipment comprises a motor base, a core rod which is horizontally fixed above a motor base, a testing pipe piece sleeving the core rod, a transmission screw rod parallel to a side of the core rod, and an assembly tool disposed at a side of the testing pipe piece. The transmission screw rod passes through the testing pipe piece, and the testing pipe piece is fixedly provided with a threaded sleeve engaged with the transmission screw rod. An assembly tool is in a cylindrical structure, wherein one surface, facing the testing pipe piece, of the cylindrical structure is opened. The assembly tool comprises a disc body, and the core shaft and the transmission screw rod pass through the disc body. The assembly tool also comprises a cylinder fixed at one side of the disc body, and the disc body is provided with a water injection mouth which is connected with a water injection pipe. The water injection pipe is provided with a water pressure meter, and the cylinder is provided with a plurality of pressure meters. The equipment can simulate the working state of the shield tail brush, and carries out the testing of airtightness and pressure resistance.

The invention discloses a water supply system of medical purified water with high quality. The water supply system comprises a quartz sand filter, a full-automatic softener, a raw water tank, a booster pump, a plate heat exchanger, an active carbon filter, a precision filter, a primary high-pressure pump, primary RO (reverse osmosis) devices, a secondary high-pressure pump, a secondary RO device, a buffer water tank, a buffer water pump, an EDI (electrodeionization) device, a purified water tank and a circulating water supply device, which are communicated with a water inlet in sequence, wherein the quantity of RO membranes of the primary RO devices is more than that of the RO membranes of the secondary RO device. The water supply system has the beneficial effects that the primary RO devices and the secondary RO device are ensured to work normally through matching of the quantities of the RO membranes; a middle water tank between the primary RO devices and the secondary RO device is reduced, thus reducing the risk of water pollution; the EDI device is adopted, thus ensuring the effluent quality of purified water; and pure steam sterilization is adopted as the sterilization method of a purified water circulating pipeline, so that the sterilization effects are good.

The invention belongs to the technical field of ground experiments for liquid propellant rocket engines and discloses an array self-impact type water-mist cooling device with the aim of resolving theproblem in the prior art of incomplete cooling of a cooling device. The device comprises a fire hydrant, a main liquid supply pipeline and a drainage drum. The drainage drum comprises a drum body andannular liquid collection cavities arranged at two ends of the drum body. One end of the main liquid supply pipeline communicates with the fire hydrant and the other end thereof communicates with oneof the annular liquid collection cavities. At least four injection pipes are arranged between the two annular liquid collection cavities and fixed on the inner wall of the drum body along the axial direction and extend from one end of the drum body to the other end thereof. Lines of main injection holes are arranged along the length directions of the injection pipes. The main injection holes are slant hole passages communicating with the injection pipes. The center lines of two adjacent slant hole passages intersect at one point. After the point of intersection departs from the inner wall of the drum body, two main injection holes firstly intersecting with each other become a pair. Center lines of the main injection holes intersect to form an included angle A. The angular bisector of the included angle A is vertical to pipe walls of the injection pipes.

The invention discloses a detergent composition special for an automatic dishwasher, relating to the technical field of daily chemical industry. The composition is prepared from 0.01 to 20 parts of apolyether surfactant, 0.01 to 20 parts of a nonionic surfactant, 0.01 to 20 parts of another surfactant, 0.1 to 30 parts of a copolymer dispersant, 0.1 to 40 parts of an amino acid derivative chelating agent, 0.1 to 10 parts of an enzyme preparation and 0 to 80 parts of an additive; wherein the nonionic surfactant at least contains two fatty alcohol alkoxylates, including a fast-emulsified fatty alcohol alkoxylate and a slow-emulsified fatty alcohol alkoxylate, and the weight ratio of the polyether surfactant to the fatty alcohol alkoxylates is 1: (0.1 to 1.5). The detergent composition for the automatic dishwasher, provided by the invention, has good emulsification and dispersion removal effects on oil stain and food dirt, effectively reduces foam in a washing process, and improves the cleaning ability of the detergent.

The present application discloses a nozzle for a high-pressure cleaning machine, which includes a main body, the main body is formed with a hollow cavity along the axial direction, and two injection holes are opened on the main body, and the two injection holes are symmetrically distributed on the On both sides of the main body, the two injection holes communicate with the cavity, the angle between the two injection holes is 154-158°, and the opening formed by the intersection of the two injection holes faces away from the hollow space. cavity. The two injection holes of the present invention form a certain included angle, which can greatly reduce cleaning blind spots when entering deep holes for cleaning, improve product quality, and achieve ideal cleaning effects.

The invention discloses a rail-mounted water spraying device for municipal administration and relates to the technical field of water spraying equipment for municipal administration. The rail-mounted water spraying device for municipal administration comprises a main pipeline, a C-shaped supporting frame installed on the inner wall of the main pipeline, and a traveling mechanism installed on the outer wall of the main pipeline. Through holes are evenly formed in the positions, corresponding to the C-shaped supporting frame, of the pipe wall of the main pipeline in the length direction. In the main pipeline, each through hole is provided with a taper plug in a sealed fit mode. A rack is installed on the outer wall of the main pipeline in the length direction. The traveling mechanism comprises a supporting hoop, a power device installed on the left side of the supporting hoop, an ejecting device installed on the right side of the supporting hoop, and a control cabinet installed on the top of the supporting hoop. The ejecting device comprises a sliding sealing block installed at the lower right end of the supporting hoop. A water collection groove is formed in the middle of the concave arc face. A guide tube communicating with the water collection groove is formed in the outer side face of the sliding sealing block. According to the rail-mounted water spraying device for municipal administration, water is sprayed evenly, the stable water pressure can be maintained, and no area is left.

The invention discloses a drip-proof shower head capable of quickly draining residual water. The drip-proof shower head comprises a rear cover, a water outlet face cover, a water distributing cavity,an opening-closing device, wherein the rear cover is provided with a water inlet; the water outlet face cover is provided with a first water outlet hole and a second water outlet hole; the water distributing cavity is formed between the rear cover and the water outlet face cover; the opening-closing device comprises a first plugging piece used for opening and closing the second water outlet hole so as to open and close the communication between the second water outlet hole and the water distributing cavity; and the water distributing cavity communicates with the first water outlet hole. When the shower head is opened, the opening-closing device closes the second water outlet hole, and water enters the water distributing cavity from the water inlet and flows out from the first water outlethole; and when the shower head is closed, the opening-closing device opens the second water outlet hole, so that residual water in the water distributing cavity can be discharged from the second wateroutlet hole. By the adoption of the technical scheme, residual water in an inner cavity can be rapidly discharged after water supply of the shower head is cut off, continuous water dripping of the shower head is prevented, large-particle impurities of the shower head are rapidly discharged, dirt is removed, and water outlet holes of the shower head are prevented from being blocked.

The invention discloses a water conservancy reaming system which comprises a water source, a connecting pipe, a water pump, a water supply connector, a drill bit and a drill rod, wherein the drill bit and the water supply connector are mounted at the two ends of the drill rod; the water supply connector is connected to the outlet of the water pump; the water inlet of the water pump is communicated with the water source through the connecting pipe. According to the water conservancy reaming system, the performance of the whole system is improved by improving parts in the integral structure, and the technical problems caused by specific parts are solved.

The invention relates to a drill pipe water supply device. The drill pipe water supply device comprises a water supply mechanism, a water supply connector and a drill pipe; the drill pipe is connected to an outlet of the water supply mechanism through the water supply connector. By means of the drill pipe water supply device, the performance of a whole system is improved by improving components in the whole structure, and technical problems caused by the specific components are solved.

The invention discloses a pump and valve integrated single-motor double-acting pressure flow precise control valve for flower watering. When a pressure sensor in a water tank detects that a water pressure is insufficient or does not reach a preset value, a device automatically switches on an air pump traction electromagnet, an air compression pump works to compress air into the water tank; if the pressure detection in the water tank meets the requirement of the preset value, the air compression pump stops pumping the air; precise control of flow is realized by utilizing a long and narrow micro-channel among an upper hole of a flow adjustment valve, a lower hole of the flow adjustment valve, and an intermediate adjustment hole corresponding to a flow adjustment rod according to the soil moisture content given by a humidity sensor in a flowerpot; the precision of flow control is guaranteed by constant pressure and fine adjustment of the displacement of a slit. According to the pump and valve integrated single-motor double-acting pressure flow precise control valve for flower watering, flower watering water supply and flow adjustment are integrated; the constant pressure of the water tank is realized through the air compression pump; precise control of a watering water amount is realized through the flow adjustment; an air pumping cylinder and the flow adjustment valve are integrated, so that air pumping and watering double-acting switching control is realized through one power source.

The invention belongs to the field of household appliances, and particularly relates to a self-heating pressure-stabilizing intelligent water heater. The self-heating pressure-stabilizing intelligentwater heater comprises a box body which is internally provided with a heating device; the upper end and the lower end of the box body fixedly communicate with a water feeding pipe and a water discharging pipe; the inner side wall of the box body is slidably connected with a horizontally-arranged heat insulation plate in a sealed mode; the density of the heat insulation plate is smaller than that of water, an water exchanging hole which is through in the vertical direction is formed in the heat insulation plate, and temperature difference semiconductors are fixedly installed in the positions, on the two sides of the water exchanging hole, of the heat insulation plate; the heat insulation plate is internally provided with two sliding cavities, and electromagnets are slidably connected into the sliding cavities and fixedly sleeved with springs. According to the self-heating pressure-stabilizing intelligent water heater, according to the difference between the temperature of water above and below the heat insulation plate, the temperature difference semiconductors generate electric energy, opening and closing of the water exchanging hole are controlled, the pressure of water in a waterbox keeps constant, and the situation that cold water and hot water are mixed, thus, the water discharging temperature of a water discharging pipe is reduced, and normal using of a user is influencedis avoided.

The invention belongs to the field of tire cooling, and especially relates to a cooling device for automobile tires. For the problems of tire burst caused by temperature rising of automobile tires dueto long-time driving, the following schemes are provided as follows: the device includes an installation rack, a support, a water storage tank, a water pump, a first water pipe, a connecting pipe, asecond water pipe, a nozzle, a driving device, a cam, a boss, an adjusting rod, an elastic member, a temperature sensor and a controller; the water pump is arranged on the water storage tank; one endof the second water pipe communicates with the nozzle; the two ends of the connecting pipe communicate with the first water pipe and the second water pipe; the connecting pipe is provided with an adjusting port; the driving device is arranged on the installation rack and in transmission connection with the cam; the cam is connected to the boss; the boss is connected to the adjusting rod; the adjusting rod successively passes through the support and the adjusting port in the connecting pipe in a direction away from the boss and is slidingly connected to the support and the connecting pipe; andthe elastic member is arranged at the periphery of the adjusting rod. Water can be sprayed to the surface of tires from the nozzle to perform cooling processing.

The invention relates to a target cooling back plate and a preparation method thereof. A base of the target cooling back plate adopts an integrated design of flange connecting pieces of a water inletand a water outlet as one part of the base, and correspondingly, an inclined water way is formed between a cooling water way in the base and the water inlet/ outlet, so that the leakage problem in thewater inlet/outlet is effectively prevented. The preparation method comprises the following steps that: the thickness of a cover plate of the target cooling back plate is increased to 4.5-5mm; the sand blasting treatment is performed on the inner surface of the cooling water way of the base; the cover plate and the base are welded by vacuum brazing to obtain a target cooling back plate crude product; and then, the machining is performed by dint of support and fixation of bosses with the same heights to obtain the target cooling back plate, so that the excellent welding condition can be guaranteed, the machining is convenient, and the repeated utilization rate of the target cooling back plate can be effectively increased.

The invention relates to an indoor karst subsurface erosion simulation device, which comprises a pedestal, a water tank, a soil loading container and a soil catching container. The water tank and the soil loading container are positioned on the pedestal. An open end of the water tank is communicated with one end of the soil loading container. A first filter screen is arranged at the junction of the water tank and the soil loading container. One end of the soil loading container, far from the water tank, is successively provided with a second filter screen and a sealing plate from the inside to the outside. A top cover for sealing the water tank and the soil loading container is arranged at the top of the water tank and the soil loading container. A water inlet pipe is connected onto the top cover, corresponding to the position of the water tank. The soil catching container is positioned below the outside of one end of the soil loading container, far from the water tank. The invention has the following beneficial effects: the device is used for simulating karst subsurface erosion at different hydraulic head pressures and under different water path conditions, and is beneficial to the research on the karst subsurface erosion mechanism.

The invention discloses a space twisting plastic impeller type well submersible pump comprising a shell, a water outlet pump head, a check valve, a bearing seat, a sliding bearing, an adjusting ring,a multi-stage impeller assembly including a hexagonal pump shaft, a guiding impeller, a shaft sleeve, an impeller, a blower inlet casing and a pump shaft bearing frame, a coupling, a water inlet baseand a wire trough; and the guiding impeller is formed by welding a guide vane seat and a fairing which are obtained through injection molding, the impeller is formed by welding a main impeller and animpeller front cover plate which are obtained through injection molding, the guide vane seat includes a conical bottom cover designed according to the Bezier curve and seven spiral guide vanes, the main impeller includes a conical back cover plate designed according to the Bezier curve and six spiral blades, the spiral direction of the blades is opposite to the spiral direction of the guide vanes,the protruding water inlet of the blower inlet casing is in clearance fit with a water inlet of the impeller front cover plate, and an annular groove surrounding the protruding water inlet is in transition fit with the end of a water outlet of the fairing for positioning. The space twisting plastic impeller type well submersible pump has the beneficial effects of being large in flow rate and highin lift, being capable of reducing the pressure loss, improving the water pump efficiency and being low in cost.

The invention relates to a multi-section scrotum lens. The multi-section scrotum lens comprises sheath bodies used for endoscopy and treatment. There are at least two sections of sheath bodies. Rubber water bags are arranged between the sheath bodies, every two adjacent sections of sheath bodies are communicated with the space in the corresponding rubber water bag, and the ends, facing to each other, of every two adjacent sections of sheath bodies are each provided with a connecting structure allowing the two sections of sheath bodies to be connected. The multi-section scrotum lens has the advantages that 1, water pressure in the perididymis cavity is maintained, so that the perididymis cavity can be in a full state; 2, water is prevented from entering a tissue space between perididymis and outer skin of the scrotum, subcutaneous tissue oedematous is avoided, and operation space in the perididymis cavity can be maintained easily.

The invention provides a recovery and purification device for industrial sewage treatment, which comprises a chemical purification furnace, a feeding hopper, a motor, a stirring shaft, a plurality of stirring blades, an intermittent discharging mechanism, a pump body, an annular drainage pipe and a pressure stabilizing mechanism, a furnace door is hinged to the side surface of the chemical purification furnace, and the feeding hopper is connected to the top of the chemical purification furnace; the motor is welded to the top of the chemical purification furnace, the stirring shaft is rotationally connected to the top of the chemical purification furnace and is driven by the motor to rotate, the stirring blades are annularly distributed on the annular side face of the stirring shaft at equal intervals, and the intermittent discharging mechanism is located in the chemical purification furnace. A pumping pipe of the pump body is connected with the inner bottom of the chemical purification furnace, a water outlet pipe of the pump body is connected with an annular drainage pipe through a pressure stabilizing mechanism, the contact area of industrial wastewater and chemical agents is increased, the purification speed is increased, and the purification efficiency is improved.

The invention discloses a flushable ultra-filter water purifier, comprising a machine head part and a filter core part; the machine head part is provided with a connecting structure, wherein the connecting structure comprises a connecting water inlet, a connecting water outlet and a rotating base; the rotating base can be rotated between a dismounting position and a mounting position in relative to the machine head part; through mounting or dismounting the filter core part, the rotating base is located at the mounting position or the dismounting position; the rotating base is provided with a connecting water path, a raw water path and a clean water path; both ends of the connecting water path of the rotating base at the dismounting position are connected with the connecting water inlet and the connecting water outlet; the raw water path of the rotating base at the mounting position is connected with the connecting water inlet, the purified water path is connected with the connecting water outlet; the filter core inlet of the filter core part is connected with the raw water path, and the filter core outlet is connected with the purified water path; the filter core part is further provided with a discharge water opening, and the discharge water opening is provided with a switch valve. The flushable ultra-filter water purifier has the advantages of flushing the filter core part, being simple and convenient to operate, and few in consumed time.

The invention provides a drainage method enabling an underground comprehensive pipe gallery to penetrate through a canal in a dry season. The drainage method includes the following steps that 1, a drainage channel and a water passing pipe are built at a position parallel to the position where a foundation pit passes through the original canal; 2, a water injection test is performed on the water passing pipe and the drainage channel; 3, after the water passing pipe and the drainage channel pass the water injection test, water in the original canal is drained to the drainage channel and the water passing pipe, and then two ends of the original canal are blocked to achieve safe canal diversion; 4, after canal diversion is completed, foundation pit excavation and subsequent pipe gallery structure construction are performed; 5, foundation pit backfilling is performed; 6, the canal is restored to allow water to flow through the canal; and 7, drainage channel backfilling is performed. According to the drainage method, the water passing pipe is erected on the upper portion of the pipe gallery foundation pit to drain the water in the canal from an upstream position to a downstream position,double-layer profile steel is adopted for supporting the water passing pipe, and it is avoided that the water passing pipe is damaged by excessive stress; hoisting is easy; and the cooperative designof steel sheet pile and steel support erection at the water passing pipe is used for ensuring that water passing pipe bearing platforms do not move, and it is guaranteed that the drainage method is safe and reliable.

The invention discloses a water injection control system and method, a cloud server and a clothing processing device. The water injection control system comprises the clothing processing device, at least one water using terminal and the cloud server, wherein the clothing processing device is used for obtaining water injection pressure; the water using terminals are used for obtaining correspondingwater using pressure; the cloud server is in communication with the clothing processing device and the water using terminals to correspondingly receive the water injection pressure and the water using pressure, and when the clothing processing device is in the water injection state, and at least one water using terminal is in the water using state, the cloud server adjusts the water injection pressure of the clothing processing device according to the corresponding water using pressure. According to the water injection control system, the water pressure of the water using terminals can be effectively kept, and water using experiences of users are improved.

The invention relates to a new energy automobile damping power generation device, which belongs to the technical field of energy reutilization devices. The new energy automobile damping power generation device comprises a pressure cylinder filled with liquid, a piston which is arranged in the pressure cylinder in a sliding manner, and a control component which is used for driving the piston to move and connected with a vehicle main beam, one end of the control component is connected with the piston, the other end of the control component is connected with the vehicle main beam, and the vehiclemain beam drives the piston to reciprocate in the pressure cylinder through the control component to pressurize; the device further comprises a constant-pressure water tank, and the input end of theconstant-pressure water tank is communicated with the output end of the pressure cylinder; the device further comprises a water turbine, the input end of the water turbine is communicated with the output end of the constant-pressure water tank, and the output end of the water turbine is communicated with the input end of the pressure cylinder. According to the new energy automobile damping power generation device, vibration generated by automobile running is used for generating power, the power is collected to charge an automobile, energy consumption is reduced, power generation is stable, andfluctuation is avoided.