41results about How to "Short self-priming time" patented technology

The marine bidirectional pump of the present invention is composed of a pump body, a rotor, a piston, a spacer tongue sleeve, a spacer tongue and an eccentric shaft. The axis of the eccentric shaft has an eccentricity E1 to the axis of the inner chamber of the pump; one end of the eccentric shaft is directly connected to the extension shaft of the motor. , the other end is inserted into the eccentric sleeve mounted on the waist of the piston, and is keyed to it; the axis of the eccentric sleeve has an eccentricity E2 to the axis of the eccentric shaft. The invention utilizes the principle of eccentric mechanism to realize the suction and discharge function of the pump. When the rotor rotates, the piston reciprocates along the radial through hole while rotating under the action of the eccentric shaft, sucking liquid from the suction chamber and then discharging liquid from the discharge chamber. The barrier of the diaphragm creates a pressure difference between the discharge chamber and the suction chamber. The effect of the present invention is: the motor can send liquid in both directions in forward and reverse directions, has strong self-priming performance, has the function of "self-recovery after cut-off", is highly efficient and energy-saving, and has strong adaptability to the inclination and swing of the hull. A safety valve to prevent the motor from being overloaded and burned.

The invention discloses a self-absorption centrifugal pump with a water return hole capable of being closed automatically. According to the self-absorption centrifugal pump, a coaxial water return hole automatically-closing device is arranged right in front of the water return hole of the pump. The self-absorption centrifugal pump is mainly composed of a cylinder sleeve and a piston moving in the cylinder sleeve. When self-absorption is started by the pump, the piston resets under action of a compression spring; the water return hole is opened, and self-absorption water conveying is conducted; once the self-absorption process is completed, pressure water generated at an outlet of the pump enters a rear cavity of the piston through a pipe; and the piston is driven to advance to block the water return hole, and leakage is eliminated. The self-absorption centrifugal pump has the positive effects that self-absorption time of the pump is shortened; no leakage can be generated; volume losses are reduced; and efficiency of the pump is improved. To prevent the pressure water from damaging the structure, the piston drives a round bar to block the water return hole through the compression spring instead of direct blocking, and therefore if impurities such as sand grains are contained at a conical opening of the water return hole, the situation that leakproofness is lost due to damage of the conical opening can be avoided as a result of protection of the compression spring; and reliable and normal operation of the pump is guaranteed.

The invention relates to a no-leakage full-power sealed vertical self-priming pump, comprises a motor, a clutch, a pump holder, a pump shell, a pump axis, a blade wheel, a baffle, a pump inlet and a pump outlet, wherein the main axis of the motor is connected with the pump axis and the blade wheel via the clutch, the invention also comprises a full-power sealed device, a power gas-sealed device, a gas-liquid separating chamber, a liquid storage chamber and a guide blade gas-liquid mixing machine. The full-power sealed device is arranged on the connection position of the pump axis and the pump holder, comprising an axial power sealed device and a radial power sealed device, wherein the motor drives the full-power sealed device to rotate with high speed, and axial power sealed device produces an upward pumping effect to prevent the outside air into the pump, while the radial power sealed device produces an outward radial pumping effect to prevent the liquid in the pump leakage out of the pump and realize no-leakage full-power sealing. The self-priming pump of the invention has the advantages of reliable operation, convenient repairing, short self-priming time, high pumping efficiency, no liquid leakage, full power characteristic and meeting the saving energy and protection environmental requirements.

The invention relates to a portable fire pump comprising a petrol engine (1) and a pump body (2), wherein the pump body (2) comprises a sealing base (4), a pump shell (3), a main shaft (5), three-level centrifugal impellers and two-level guide blades, wherein the sealing base (4) is connected with the petrol engine (1); the pump shell (3) is fixedly connected with the sealing base (4); the main shaft (5) is arranged in the center of the pump shell (3); the three-level centrifugal impellers are sequentially fixed with the main shaft (5); the two-level guide blades are sequentially fixed in thepump shell (3); the main shaft (5) is coaxially connected with an output shaft of the petrol engine (1); and the sealing base (4) is internally provided with a sealing device (6). The invention solves the technical problems of large size, heavy weight, high energy consumption and easy damage of the traditional fire pump, has the advantages of small size, light weight, portability, low energy consumption and technical effect of the portable fire pump which can automatically close the petrol engine (1) under the condition of an insufficient water source.

The invention discloses an instant energy-saving vertical self-priming pump. The instant energy-saving vertical self-priming pump is characterized in that a water inlet pipe and a water outlet pipe are arranged on the left and right sides of a pump body respectively; a liquid filling port is formed in the water inlet pipe; a valve is arranged on the liquid filling port; a water pressing chamber is formed on the upper part in the pump body, and a water sucking chamber is formed on the lower part in the pump body; an impeller chamber is positioned in the water pressing chamber; the impeller chamber consists of a side wall and a back cover; a plurality of fine through holes communicated with the water pressing chamber are formed in the back cover of the impeller chamber; a water sucking short pipe is arranged on the lower part of the impeller chamber; the water sucking short pipe is communicated with the water sucking chamber; the water outlet pipe is communicated with the impeller chamber; the water inlet pipe is communicated with the water pressing chamber; an impeller in the impeller chamber is fixedly arranged at one end of a pump shaft; the pump shaft is connected with a motor output shaft; a cylindrical upper sealing gland and a lower sealing gland are arranged outside the pump shaft from top to bottom in a sleeving way; a negative-pressure sealing device is arranged on the pump shaft. The instant energy-saving vertical self-priming pump is easy to operate, contributes to energy saving, is durable, and can be used instantly.

The invention provides a novel dry starting self-sucking pump, which comprises a liquid storage chamber, outer self-sucking chamber and inner self-sucking chamber which are sequentially arranged fromoutside to inside, wherein the inner self-sucking chamber is provided with a main shaft and three-leaf partition plates which are rotatably mounted on the main shaft, the top of the leaf of each partition plate is tightly jointed with the inner wall surface of the inner self-sucking chamber, three identical contraction grooves are arranged on the outer side of the inner self-sucking chamber, a spring and a separation baffle are arranged in each contraction groove, one side of each contraction groove is provided with an exhaust pipe, and the other side of the contraction groove is provided witha suction pipe, the exhaust pipe is communicated with the liquid storage chamber and the outer self-sucking chamber, the suction pipe is communicated with the inner self-sucking chamber and the outerself-sucking cavity, the bottom end of the outer self-sucking chamber is provided with a pump inlet pipe along the tangential direction, a check valve is arranged in the pump inlet pipe. According tothe invention, the problem that water is needed when the self-sucking pump is firstly started is solved, the dry starting of the self-sucking pump is achieved, the self-sucking pump can work normallywhen started again, nine times of self-sucking can be completed when the three-leaf plates rotate for one circle, the working efficiency is obviously improved, and the operation process is greatly simplified.

The invention discloses a gas-liquid separation device for enhancing the self-suction of a self-suction multistage centrifugal pump. The gas-liquid separation device is arranged inside the self-priming centrifugal pump. The gas-liquid separation device is mainly composed of two parts: an annular bracket and a ring-shaped spiral channel installed close to the annular bracket. The surface of the spiral channel is uniform Coated with hydrophobic materials to form a ring-shaped spiral tube channel on the hydrophobic surface supported by a ring bracket; the above-mentioned gas-liquid separation device is installed between the cavity of the pump casing and the pump casing, and the inner and outer rings are tightly fitted to the cavity and the pump casing respectively. The top and bottom of the gas-liquid separation device are provided with fan-shaped openings, the top is the exhaust port, and the bottom is the water return port; the above-mentioned gas-liquid separation device is installed in the area near the pump outlet, so that the gas-liquid separation device The exhaust port faces the pump outlet, and the return port The water port is located at the bottom of the pump. The annular gas-liquid separation device of the present invention has the advantages of simple structure, convenient installation, low processing difficulty, light weight, easy access to raw materials, and broad application prospects.