238results about How to "Improve vacuum efficiency" patented technology

A cyclone comprises a cyclone chamber having an air inlet, an air outlet, a first end wall, a second end wall and a sidewall, the air inlet has an inlet end having a shape and a cross sectional area in a plane transverse to a direction of airflow through the air inlet, and the air inlet is provided at a first juncture of the sidewall and the first end wall, wherein the first juncture downstream of the inlet is configured to at least approximate a portion of the shape of the air inlet that is adjacent the first juncture.

A cyclone comprises a cyclone chamber having an air inlet, a vortex finder, a first end wall, a second end wall and a sidewall, the air inlet has an inlet end having a shape and a cross sectional area in a plane transverse to a direction of airflow through the air inlet, and the air inlet is provided at a first juncture of the sidewall and the first end wall, the vortex finder has a wall that meets one of the first and second end walls at a second juncture, wherein the second juncture extends at an angle to both the wall of the vortex finder and the end wall on which the vortex finder is provided.

A cyclone comprises a cyclone chamber having a first end having a first end wall, a second end having a second end wall, a sidewall, an air inlet at the first end, an air outlet and a first central insert member extending away from a center of the second end wall into the cyclone chamber wherein the first central insert member comprises a central member wall extending away from the second end wall and the central member wall and the second end wall meet at a first juncture that extends at an angle to both the central member wall and the second end wall

A cyclone comprises a cyclone chamber having an air inlet, an air outlet, a screen upstream of the air outlet, a longitudinal axis, a first end wall, a second end wall and a sidewall, the air inlet having a cross sectional area in a plane transverse to a direction of airflow through the air inlet and the screen having an inner end spaced longitudinally inwardly from the air outlet and having a cross-sectional area transverse to the cyclone axis that is less than the cross sectional area of the air inlet.

A vacuum box system for laser processing mainly comprises a shielding gas system, a vacuum chamber, a vacuum obtaining system, a cooling system, a three-dimensional worktable, a powder delivering system, a computer control system and an electronic control system. The three-dimensional worktable is fixed in the vacuum cavity; the shielding gas system, the powder delivering system and the vacuum obtaining system are connected with the vacuum chamber through tubes; the cooling system is in system connection with the vacuum chamber and the vacuum through tubes; and the computer system and the electronic control system are connected with the vacuum chamber, the powder delivering system and the vacuum obtaining system through electric wires. The vacuum box system adopts manual manner to control processes of vacuumizing and charging shielding gas; the operation process is simple, safe and reliable; and the vacuum box system can realize laser processing in three-dimensional space under vacuum environment or shielding gas environment.

The invention discloses an electronic vacuum pump for a new energy vehicle brake vacuum booster. The electronic vacuum pump comprises a motor assembly, a supporting base, a pump chamber lower cover, a driving sleeve, a pump rotor, blades, a pump chamber, a pump chamber upper cover, a pump body cover and fixing pins, wherein a left side air feeding slot of the pump chamber lower cover, a left side air feeding through hole of the pump chamber and a left side air feeding slot of the pump chamber upper cover are communicated with one another to form an air passageway; a right side air feeding slot of the pump chamber lower cover, a right side air feeding through hole of the pump chamber and a right side air feeding slot of the pump chamber upper cover are communicated with one another to form an air passageway; a flow guide slot of the pump chamber lower cover is communicated with an inner cavity of the pump chamber; an air discharging slot of the pump chamber upper cover is communicated with the inner cavity of the pump chamber; the flow guide slot of the pump chamber lower cover and the air discharging slot of the pump chamber upper cover are symmetric. When the vacuum pump works, an air path with four air inlets and two air outlets is formed; therefore, the air feeding resistance is greatly reduced, and the air feeding amount of the pump chamber is increased; under the equal energy consumption, the vacuumizing efficiency of the vacuum pump provided by the invention is higher.

The invention discloses a processing method for reinforcing a soft clay ground through vacuum preloading in combination with electro osmosis. According to the method, solid airtight separate vacuum preloading in combination with electric osmosis in which reinforcing steel bars are taken as the electro osmosis electrodes are adopted for reinforcing the ground. During the arrangement of vacuum preloading systems, by using a separate seal joint, a sealed water pipe, a sealed main pipe and a vacuumizing device, plastic water drainage plates which are inserted into the soil and plastic water drainage plates which are paved on the surface of the soil form two sets of separate airtight vacuum systems which can be separately controlled to turn on or off, and the vacuum degrees of the two vacuum systems can be separately regulated. After the vacuum systems are arranged, rebar electrodes are inserted in rows in the gaps between the plastic water drainage plates inserted in the soil, and then the perforations between the rebar electrodes and the vacuum preloading airtight systems are sealed. With the processing method, the vacuum transfer and utilization efficiency is improved, the water drainage effect of deep-layer soil is improved, the soil processing uniformity is remarkably improved, the overall soil reinforcing effect is improved, and fast, efficient and energy-saving hybrid reinforcement construction is realized.

The invention discloses a double-main-shaft double-working-table gantry type heavy wood composite processing center comprising a bed body, double working tables, an X-Z-shaft sliding table, a double-main-shaft machine head, a vacuum pump component, a control cabinet and an electricity box, wherein the bed body comprises a base, a vertical column and a cross beam, the double working tables are arranged on a Y-shaft guide rail of the base side by side, each working table respectively comprises a sliding base, a hood cover, a working table panel component and a connecting side frame, a Y-axial sliding block is arranged at the bottom of the sliding base and is adapted to the Y-shaft guide rail, and the Y-axial sliding block and the Y-shaft guide rail are both hidden in the hood cover; and the double-main-shaft machine head is adapted to the X-Z-shaft sliding table in a sliding manner by virtue of a Z-shaft sliding plate, the X-Z-shaft sliding table is adapted to the X-shaft guide rail of the cross beam, and the double-main-shaft machine head comprises a gang drill component, two main shaft components and two tool magazine components. Therefore, processes of cutting and sawing, engraving and milling, slotting, vertical drilling and horizontal drilling of two parts can be completed by virtue of one-time clamping and continuous compounding, and moreover, the parts can be respectively processed and clamped on the two working tables synchronously, so that the manufacturing time can be saved, and the production efficiency can be improved.

A surface cleaning apparatus is provided wherein a uniflow cyclone comprises a cyclone chamber defined by a longitudinal axis, the cyclone chamber having a dirt outlet that has a variable length in the direction of the longitudinal axis. A cyclone chamber having a barrier wall facing the dirt outlet of the cyclone chamber is also provided.

An upright surface cleaning apparatus is provided wherein the upper section is provided with an openable post motor filter housing. The post motor filter may be axially removable and may be positioned below the suction motor.

A valve malfunctioning detection system for use in a vacuum sewer system including a vacuum pit in fluid communication with a vacuum station is provided. The vacuum pit includes a vacuum sewer valve that is moveable between an opened position and a closed position. The valve malfunctioning detection system may include a radio unit adapted to be carried by the vacuum pit, a gateway radio in communication with the radio unit, a hub radio in communication with the gateway radio to receive a signal transmitted by the gateway radio, and a server in communication with the hub radio. The signal transmitted by the radio unit may include an indication of a status of the vacuum sewer valve.

A dust-collecting auxiliary device is equipped on a vacuum cleaner that comprises at least a motor, a fan, a dust-collecting chamber, a suction inlet, and a driving device. Said dust-collecting auxiliary device includes at least one air pipe of which an air inlet at one end is fixed in a fan container of said fan and an air outlet is placed at the lower surface of the bottom cover of the vacuum cleaner in to the neighboring-front the suction inlet, at least two wings wherein each wing with one end fixed at the one side of the suction inlet, while the other end thereof extended forward and outward to give an increasing distance from another wing.

The invention relates to the technical field of conveying devices, in particular to a mechanical arm rotating sucker conveying device. The mechanical arm rotating sucker conveying device comprises a mechanical arm main body, a sucker assembly, an air pipeline assembly and a first air pipe, wherein the sucker assembly comprises a fixed component fixedly connected with the mechanical arm main body, a rotating component which is connected with the mechanical arm main body and rotates relative to the fixed component and a plurality of suckers which are connected with the rotating component and synchronously rotate with the rotating component; the air pipeline assembly comprises a plurality of first air pipeline structures arranged on the fixed component and a plurality of second air pipeline structures arranged on the rotating component, and the second air pipeline structures separately communicate with the suckers and an air path formed by the first air pipeline structures; and the first air pipe is connected with the first air pipeline structures of the fixed component. The service life of the mechanical arm rotating sucker conveying device is longer, economical losses can be reduced, and the production efficiency is increased.

The invention discloses a structure and a method for processing consolidation of a water pumping and air exhausting soft foundation. The structure comprises weaving cloth, a sand cushion layer, multiple long vertical water discharging plates, multiple horizontal filter pipe branch pipes, multiple horizontal filter pipe main pipes, non-woven geotextile, a sealing film, water-air separators and a vacuum pump, wherein the weaving cloth and the sand cushion layer are sequentially arranged in a soft foundation processing area, the long vertical water discharging plates are inserted into the soft foundation processing area by penetrating through the sand cushion layer and the weaving cloth, the horizontal filter pipe branch pipes and the horizontal filter pipe main pipes which are arranged in parallel are embedded into the sand cushion layer, the non-woven geotextile and the sealing film are sequentially paved on the sand cushion layer, the water-air separators are arranged by diving the soft foundation processing area into pieces, one water-air separator is arranged in each area, multiple areas are equipped with one vacuum pump, water-air inlets of the water-air separators are connected with the horizontal filter pipe main pipes through connecting pipelines, water outlets of the water-air separators are connected with water discharging pipes, and air pumping openings of the water-air separators are connected with the vacuum pump through air pumping pipes. The structure and the method for processing the consolidation of the water pumping and air exhausting soft foundation, disclosed by the invention, have the advantages that consolidation processing of the water pumping and air exhausting soft foundation is realized by utilizing the vacuum pump and the water-air separators, the cost can be reduced, and the consolidation efficiency can be effectively increased.

The invention discloses a cleaning head for a rotary cleaning tool. The cleaning head is of an impeller structure and comprises multiple cleaning blades which are distributed in the peripheral direction and used for cleaning a surface to be cleaned, wherein the cleaning blades are bent towards the rotating direction of the cleaning head during working; and channels allowing dirt to move therein are formed between every two adjacent cleaning blades, the cleaning blades bent towards the rotating direction enable dirt to make centred motion along the rotating side of the cleaning blades when the cleaning head rotates, and a dirt gathering function is realized. By the adoption of the cleaning head, the defect of ordinary rotary cleaning tools that dirt can not be gathered and is thrown away easily can be overcome effectively, so that cleaning efficiency is improved. The cleaning head can be applied to cleaning tools like a sweeper, a floor mopping machine, an electric rotary mop, a sweeping robot and an electric window cleaner.