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

The invention discloses a time domain reflection technology-based moisture transport measuring device. The device comprises a soil accommodating cylinder, a water accommodating base, a technical data report (TDR) soil moisture quick measurer and a water supply device, wherein a soil body sample is filled in the soil accommodating cylinder; the bottom end of the soil accommodating cylinder is matched with the top end of the water accommodating base; the middle part of the water accommodating base is a cavity; a water-permeable support component is arranged in the cavity; a water inlet pipe and a water level observing pipe are arranged outside the water accommodating base; the TDR soil moisture quick measurer comprises a probe, a wire and a host; the probe is embedded in the soil body sample of the soil accommodating cylinder; one end of the wire is connected with the probe; the other end passes through a through hole on the wall surface of the soil accommodating cylinder and can be connected with the host; the water supply device comprises a water supply tank and a base plate; the water supply tank is positioned above the base plate; an elastic bearing device is connected between the water supply tank and the base plate; and the water outlet of the water supply tank is connected with the water inlet pipe of the water accommodating base by a conduit. The moisture content in the soil body can be accurately measured in real time by the moisture transport measuring device.

The invention discloses a multi-stage constant-pressure compressed air energy storage device, which comprises a water storage tank, a compression pipeline, a power generation pipeline and at least twostorage chambers with height difference along a vertical direction. A height difference exists between the storage tank and the storage chamber along the vertical direction; The storage tank is downwardly connected to each storage chamber through a water pipe, and each storage chamber is also respectively connected to a compression pipeline capable of compressing and storing air in the storage chamber and a power generation pipeline capable of discharging air in the storage chamber for power generation through the power generation pipeline. The invention provides a multi-stage constant-pressure compressed air energy storage device, which has the advantages that the output pressure is constant, the multi-stage pressure storage improves the energy utilization rate, the low-pressure high-efficiency storage improves the system efficiency, the storage chamber is stable and easy to control, and has good popularization prospect.

The invention relates to a domestic normal pressure heat pump water heater and a control method thereof. The domestic normal pressure heat pump water heater comprises a heat preservation water tank, a heat exchanger, a heat pump system, an electric three-way adjusting valve, a water pump, a flow sensor and a water level sensor; the electric three-way adjusting valve is provided with an a end opening, a b end opening and a c end opening; the a end opening is communicated with a water outlet hole of the heat preservation water tank; the b end opening is communicated with a water flow channel through a water pump; the c end opening is communicated with a water inlet pipe; the flow sensor is arranged at the b end opening; the water level sensor is arranged inside the heat preservation water tank; a pressure switch, a water flow switch and a hot water outlet pipe are arranged between a water outlet hole of the heat preservation water tank and the a end opening. The domestic normal pressure heat pump water heater can control a water pump and achieve circulating heating operation in combination with the water level, the water pressure and the water flows and also can control the water flowing speed through the electric three-way adjusting valve to directly heat water entering the heat exchanger to be in the set temperature and store the water to the heat preservation water tank to enable the water outlet temperature and the water pressure to be constant.

The invention, which relates to the infiltration field, provides an infiltration experimental device and a method for determining the infiltration and extraction degree. The experimental device comprises an infiltration bottle, a micro pressure pump, and a suspension bracket. Water and a core sample are arranged in the infiltration bottle having an open end; a test tube is arranged at the open endand is marked with scale lines from top to bottom; and the water level in the infiltration bottle is not lower than the bottom scale line of the test tube. The micro pressure pump is used for providing water with a predetermined pressure intensity in the infiltration bottle. The suspension bracket is arranged at a gravity sensing device connected with a data acquisition system electrically. A water inlet is formed in the infiltration bottle and is connected with the micro pressure pump by a connecting device; the connecting device includes a hydraulic control valve; when the hydraulic controlvalve detects that the pressure intensities at the two sides are not equal, the valve is opened; and when detecting that the pressure intensities at the two sides are equal, the hydraulic control valve is closed. The infiltration experimental device has advantages of great convenience in assembling, high measurement precision and wide application range.

The invention discloses a tangent pump for ships, comprising a motor, a bracket, a pump body, a pump shaft, a seal expansion piece, a mechanical seal, a gland, an impeller, a pump cover and a nut, wherein the bracket is directly connected with the motor and the pump body; the pump shaft is provided with the mechanical seal and the seal expansion piece; the gland and the pump body are matched so as to position the mechanical seal axially and form a seal cavity for storing lubricating oil; the impeller is arranged on the end part of the pump shaft and screwed by the nut to form a structure rotating along with the motor; and the gland and the pump body are matched to form a pump chamber for accommodating the impeller. In the invention, the impeller is in an open structure, and is gear-shaped along the axial direction; 8-16 long and short radial blades are exposed and evenly distributed on the lateral plate surface of the impeller in an alternating mode, an axial balance hole is arranged between the short blade and the long blade, and each radial blade has wider inside and narrower outside; the impeller disk friction loss is small, the axial force is small, the structure strength is high, and the impact force resistance is strong; and the cooling condition of the mechanical seal is favorable, thus an oversize temperature difference between the mechanical seal and a medium can not occur and the mechanical seal can not be damaged easily.

The invention discloses a multifunctional high-efficiency water-saving tap, relating to a water-saving tap, which comprises a valve body, a valve core, a hand wheel device and an auxiliary device, wherein the valve core is of a screw plug type and comprises a valve core inner sleeve, a valve core screw plug, a valve core screw rod, a screw rod yoke, a fixed screw cover, a screw rod clamping shoulder, a sealing water line plug, a water line plug connecting rod , a connecting rod through hole, and an clearance water gap; the handle wheel device comprises a hand wheel and a fixed bolt; the auxiliary device comprises a blocking prevention nano filer screen, a water-saving nozzle, and a microfiltration oxygen increaser; and a valve core outer sleeve is located in the middle of the valve body, the valve core inner sleeve is arranged in the valve core outer sleeve, the valve core screw plug is located in the valve core inner sleeve and can move up and down in the valve core inner sleeve, the water line plug connecting rod is connected with the bottom of the valve core screw plug and the top of the sealing water line plug, and one end of the valve core screw rod is connected with the handle wheel and the other end of the valve core screw plug and used for switching the sealing water line plug through a rotary hand wheel. The multifunctional high-efficiency water-saving tap has the characteristics of superior technical performance, constant pressure and current stabilization, microfiltration for dirt cleaning, favorable water quality, high-efficiency water saving, wide adaptation, firmness, durability, and advanced comprehensive cost performance.

The invention discloses a hydraulic automatic balance water supply system capable of keeping the water pressure of each floor of a building constant, comprising: a water supply main pipe coordinating with the height of the building; The branch pipes are respectively provided with variable frequency water pumps on the main water supply main pipes at the lower end of each floor of the building. The advantage is: when the above-mentioned hydraulic automatic balance water supply system is used on a building, the speed of the frequency conversion motor can be changed according to the actual water flow change, so that the water pressure of each floor of the building is constant, and the constant pressure and no negative pressure water supply of each floor can be realized, saving energy. consumption.

The invention discloses non-negative pressure variable frequency water supply equipment, and belongs to the technical field of water supply equipment. The equipment includes a constant current compensator, a controller, a variable frequency control cabinet, a pressure sensor a, a pressure sensor b and a water pump, wherein the constant current compensator is directly connected in series with a municipal pipe network; the controller is connected with the constant current compensator; the pressure sensor a, the water pump and the variable frequency control cabinet form a closed control system; one end of the closed control system is connected with the municipal pipe network; the closed control system is also connected with a user pipe network via the pressure sensor b. The equipment has the benefits that when the pressure of the municipal pipe network is higher than preset pressure, the water pump is in a stopped state; when the water supply pressure of the pipe network is lower than the preset pressure, the rotation speed of the water pump and the number of the water pumps put into operation are continuously adjusted via the closed control system formed by the pressure sensor a, the water pump and the variable frequency control cabinet, so that the water supply pressure is kept constant and the electric energy is saved to the greatest extent; the constant current compensator starts special operations to inhibit generation of negative pressure, so influences on the municipal pipe network can be avoided.

The invention relates to the technical field of water supply networks, in particular to a tail end supercharging device applied to a pipeline network of tap water. The tail end supercharging device applied to the pipeline network of the tap water comprises a main pipeline network of the tap water, a water supply pipeline network, a supercharging pipeline network and a control cabinet. The main pipeline network of the tap water is respectively communicated to the water supply pipeline network and the supercharging network, and a self-suction type pipeline pump A, a turbulent flow tank, a constant pressure water supply device and a water purifying tank are connected on the supercharging pipeline network in sequence. A water quality monitoring inductor and a U-type pneumatic tube are arranged in the turbulent flow tank. The self-suction type pipeline pump A, a self-suction type pipeline pump B, the water quality monitoring inductor, a solenoid valve A, a solenoid valve B, a solenoid valve C, a water pressure gauge A and a water pressure gauge B are all connected with the control cabinet. The tail end supercharging device applied to the pipeline network of the tap water is reasonable in structural design, the two self-suction type pipeline pumps are adopted to achieve constant water pressure of water input and output of the turbulent flow tank, the control cabinet receives the pressure values of all sections of pipelines and controls the water input and output of the turbulent flow tank intelligently, pollution-free secondary water output of a traditional turbulent flow tank is achieved, water output pressure is constant, and normal use of all water consumption equipment of users is guaranteed.

The invention relates to a concrete permeability detection device and method. The concrete permeability detection device comprises a funnel, a pressure cylinder and a hydraulic bag; a concrete sampleis put in the pressure cylinder; a sealing structure for realizing clearance sealing between the concrete sample and the pressure cylinder is arranged on the inner wall of the pressure cylinder; the funnel is detachably connected to the bottom of the pressure cylinder; the bottom of the funnel is sealed; the hydraulic bag is communicated with outside through a water pipe; the water pipe is provided with a water valve; the opening at the lower end of the hydraulic bag is connected with the inner wall of the pressure cylinder; a piston used for extruding the hydraulic bag is arranged at the upper part of the pressure cylinder; one end of a pressure spring is fixed; the other end drives a second rack to move; the second gear is meshed with a second gear; the second gear is connected with a conical reel; a columnar reel and the conical reel are rotatably connected onto the pressure cylinder; furthermore, the columnar reel and the conical reel are mutually driven through a transmission rope; the columnar reel is connected with a first gear; the first gear is meshed with a first rack; and the first rack is fixedly connected with the piston. The cost is low. The water pressure can be controlled to be constant without connection of a power supply.

The invention discloses multi-path full-compensated type tank-type non-negative pressure-superposed water supply equipment, which comprises a negative pressure inhibiting fluid director, a flow stabilizing tank, a full-compensated type compensating tank, a negative pressure inhibitor, a large-capacity small-flow high pressure compensating tank, variable frequency water supply pumps, a compensating booster pump, a plurality of pressure sensors and a controller. According to the water supply equipment provided by the invention, the generation of negative pressure is inhibited from a plurality of paths; by virtue of the compensating tank, 100% compensation can be achieved; the water supply equipment, as non-negative pressure-superposed water supply equipment, which is capable of compensating steady pressure for a long time at a large flow when pressure of a municipal pipe network drops, is capable of isolating air and is free from dead water during running; a water supply mode can be automatically adjusted regardless of the status of water supply pressure of the municipal running water pipe network, and under the precondition of guaranteeing constant water pressure at a user side, pressure-superposed water supply can be achieved by virtue of the pressure of the original pipe network on the basis of the principle of compensating for any deficiency; and the water supply equipment can run in accordance with the principles of saving energy to the greatest extent, achieving full compensation, avoiding the generation of negative pressure, avoiding a dead angle in a water flow and isolating air.

The invention discloses a dynamic variable-diameter impeller for a constant-pressure pump. The impeller comprises a wheel disc, a hub arranged in the center of the wheel disc and a plurality of bladesconnected with one side face of the wheel disc and the peripheral face of the hub, wherein a variable-diameter device is arranged on the other side face of the wheel disc, the variable-diameter device comprises an upper end cover assembly and a lower end cover assembly, the upper end cover assembly comprises a plurality of upper fan-shaped plates which are evenly distributed in the circumferential direction, protrusions are arranged on bottom surfaces of the upper fan-shaped plates, the lower end cover assembly comprises a plurality of lower fan-shaped plates which are evenly distributed in the circumferential direction, the protrusions are located between every two adjacent lower fan-shaped plates, the upper fan-shaped plate and the lower fan-shaped plate can move outwards and inwards inthe radial direction relative to the wheel disc, springs are arranged between the hub and the upper fan-shaped plate and between the hub and the lower fan-shaped plate, and the springs always have outward elasticity on the upper fan-shaped plate and the lower fan-shaped plate. The impeller is advantaged in that purposes of changing the water outlet flow and keeping constant pressure are achievedby changing the diameter of the water pump impeller.

The invention relates to a backwash osmotic water purification machine. According to the invention, a backwashing wastewater pipe is arranged at a water inlet end of an RO reverse osmosis membrane treatment unit; a pressure tank is connected to a water outlet pipe of the RO reverse osmosis membrane treatment unit; a check valve is connected to a pipeline connecting the water outlet pipe of the RO reverse osmosis membrane treatment unit and a water storage tank. With the water purification machine, the beneficial effects that RO reverse osmosis membrane service life can be prolonged, energy consumption can be reduced, and wastewater output can be reduced are achieved.

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 discloses a female vagina washing device and relates to a medical instrument. The device comprises a liquid storage bag, a drainage tube and a washing head, and the liquid storage bag is connected with the washing head through the drainage tube; the drainage tube comprises a first drainage tube which is connected with the liquid storage bag and a second drainage tube which is connected with the washing head, a transition cavity is formed between the first drainage tube and the second drainage tube, stop slide valves are both arranged on the first drainage tube and the second drainage tube, and a voltage stabilizing tube which is communicated with atmosphere is arranged on the top of the transition cavity; the device further comprises a liquid level regulating tube, the upper end of the liquid level regulating tube is communicated with the liquid storage bag, and a water suction tube is connected to the lower end of the liquid level regulating tube; the water suction tube extends into the bottom of the transition cavity, a piston which can slide up and down is arranged in the liquid level regulating tube, and a one-way valve is arranged on the piston. According to the female vagina washing device, the height of the liquid column in the transition cavity is changed so that the water pressure of the washing head can be changed, accordingly, the height of the liquid storage bag is not needed to be changed, and the liquid storage bag can be directly suspended on a rack.

The invention relates to a self-adaptive curvature device and a facade operation robot based on permanent magnet adsorption. The device comprises a frame structure, a damping spring, a first lead screw, a sliding block, an upper connecting rod, a lower connecting rod and two motion control boxes, the frame structure extends in the height direction, a second servo motor is fixedly installed in a lower frame of the frame structure, the output end of the second servo motor is fixedly connected with the first lead screw, and the upper portion of the first lead screw is fixed to the frame structure; the first lead screw is in threaded connection with the sliding block; each motion control box is of a semi-enclosed structure; the upper connecting rod and the lower connecting rod are respectivelyhinged above and below the open sides of the motion control boxes; the other ends of the upper connecting rod and the lower connecting rod are hinged at different heights of the frame structure; thedamping spring is hinged to the sliding block and the upper ends of the closed sides of the motion control boxes. Under the same condition, the robot is high in adsorption force, can adapt to curved surfaces and planes with large and small curvatures, can be completely attached to the curved surfaces, and can efficiently complete rust removal operation.

The invention discloses a fabric humidifier for spinning machinery. The fabric humidifier comprises a box, two space plates are symmetrically and horizontally arranged in the box, and the interior ofthe box is divided into a front cavity, a middle cavity and a rear cavity through the two space plates; bottom spray rod assemblies are arranged in the front cavity and the rear cavity, the middle cavity corresponds to a fabric inlet groove and a fabric outlet groove, and a first fabric guide roller, a tension roller, a second fabric guide roller and a vibration roller are arranged in the middle cavity from left to right in sequence; a top spray rod assembly is arranged over the tension roller. According to the fabric humidifier for spinning machinery, through the top spray rod assembly and the bottom spray rod assemblies, the upper and lower faces of the fabric are humidified at the same time, compared with humidification only on one face of the fabric in the prior art, the whole fabric is more evenly humidified, more convenience is provided for following ironing operation on the fabric, based on the actual conveying angle and speed of the fabric, the angle is adjusted through the bottom spray rod assemblies, the humidification condition of the bottom face of the fabric is guaranteed, and the processing quality of the fabric in the later period is improved.