10results about How to "Reduce the effective volume" patented technology

This invention relates to the field of wafer processing equipment technology, and more particularly to a high-efficiency ventilation process chamber and semiconductor processing equipment, comprising a reaction chamber, an annular isolator, and a support. A dielectric window is provided on the top of the reaction chamber, and a window communicating with the dielectric window is opened on the top plate of the reaction chamber. An electrostatic chuck for supporting the wafer is provided inside the reaction chamber, and a ceramic component is arranged around the circumference of the electrostatic chuck. The dielectric window, the window, the annular isolator, the ceramic component, and the electrostatic chuck together form a wafer processing space for confining plasma. This invention avoids the disadvantages of traditional filling structures that compress the overall cavity volume, resulting in a reduction in bushing flow area and increased gas resistance, and significantly shortens the exhaust path of process waste gas, effectively solving the problem of low ventilation efficiency caused by residual gas from previous steps during the alternation of deposition and etching steps.

The invention discloses a barrel structure for a steel ball coal mill, which comprises a barrel with two closed ends, a transmission shaft and an annular bin, and the transmission shaft is coaxially positioned in an inner cavity of the barrel, penetrates through the two ends and is fixedly connected with the barrel; the annular outer wall of the annular bin is connected to the inner wall of the middle of the barrel in a bolted mode so that an inner cavity of the barrel can be divided into a first bin chamber and a second bin chamber which are equal in volume. The annular inner wall of the annular bin is fixedly arranged on the transmission shaft in a sleeving mode, and a notch is formed in the annular inner wall, opposite to the transmission shaft, of the annular bin so as to communicate the first bin with the second bin to balance the material level. The annular bin is installed in the middle of the barrel, on one hand, the annular bin can occupy the space of the barrel, then the effective volume in the barrel is reduced, and the steel ball loading coefficient is increased by reducing the effective volume of the barrel; on the other hand, the inner cavity of the barrel can be divided into two chambers with the same volume through the annular bin, the balance of the raw coal amount and the steel ball amount in the two chambers is kept through the notch, and it is guaranteed that the steel balls are separated in the two chambers.

The application discloses a kind of phosphogypsum leachate processing method and device, it is related to sewage treatment technical field, comprising: reaction tank and fixedly connected in the inside of the reaction tank support seat, the inside of the support seat is rotatably connected with stirring rod, the top of the support seat is equipped with first drive motor, and the output of the first drive motor is fixedly connected with the stirring rod;Suction aid, located in the inside of the reaction tank, for auxiliary with the sewage at the bottom of the reaction tank is pumped to top and mixed reagent discharge.The application is by being provided with suction aid, so that sewage forms the circulating flow of "bottom-top", this process can avoid the local concentration of bottom sewage due to gravity deposition (or pollutant enrichment) too high, while let top not fully mixed sewage and bottom circulating sewage again contact, so that the sewage concentration in the whole reaction tank is more uniform.

A super-large screen changing device for filtering and mixing, characterized in that it comprises an outer shell composed of an inlet plate, an outlet plate and pads clamped between the upper and lower ends of the inlet plate and the outlet plate, a slide plate type filter unit installed in a slideway composed of the outlet plate, the inlet plate and the upper and lower pads, a power mechanism for driving the slide plate type filter unit to reciprocate along the slideway is connected to one side of the slide plate type filter unit through a connecting block; the slide plate type filter unit is provided with a material channel and an integrated porous plate, and a filter screen is provided on the feed side of the integrated porous plate; a petal-type dynamic sealing disk with a hollow structure in the middle part and a sealing auxiliary spring are provided between the mating surfaces of the inlet plate and the slide plate type filter unit, and the feed port and the mixing channel of the inlet plate are of a honeycomb structure; a petal-type static sealing disk with a hollow structure in the middle part is provided between the mating surfaces of the outlet plate and the slide plate type filter unit, and the discharge port and the mixing channel of the inlet plate are of a honeycomb structure.

The utility model provides a kind of exchangeable groove cutting workbench, including upper layer frame, lower layer frame, upper layer workstation, lower layer workstation, air duct main pipe;Upper layer frame is set in the just above of lower layer frame, upper layer workstation is slidably arranged on upper layer frame, lower layer workstation is slidably arranged on lower layer frame, one pair of upper layer side air duct is provided on upper layer workstation, upper layer main air duct is connected with upper layer side air duct, one pair of lower layer side air duct is provided on lower layer workstation, lower layer main air duct is connected with lower layer side air duct, spoiler is respectively provided in upper layer side air duct and lower layer side air duct;Upper layer air duct interface and lower layer air duct interface are respectively provided on air duct main pipe, upper layer air duct interface is used to intermittently connect with upper layer main air duct, lower layer air duct interface is used to intermittently connect with lower layer main air duct.The workbench solves the problem of poor dust removal effect, uneven wind force and attenuation of traditional workbench, avoids the problem that cutting robot needs to stop and wait during the process of feeding and polishing.

The utility model provides an efficient compressed air precision filter and belongs to the technical field of filters. The efficient compressed air precision filter comprises a filter body, a compression mechanism and a flow limiting mechanism, the filter body comprises a filter cartridge, a pair of connecting grooves are formed in the outer side of the filter cartridge, an air inlet pipe and an air outlet pipe are installed in the connecting grooves respectively, flanges are installed at the free ends of the air inlet pipe and the air outlet pipe, and the flow limiting mechanism comprises a connecting plate. The connecting plate is installed in the air inlet pipe, the connecting cover is installed in the air inlet pipe, a groove is formed in one end of the connecting cover, a circular-truncated-cone-shaped groove is formed in the other end of the connecting cover, the groove is connected with the small-radius end of the circular-truncated-cone-shaped groove, a baffle is arranged in the circular-truncated-cone-shaped groove in a sliding mode, and the side face of the baffle is attached to the groove. According to the technical scheme, through the use of the flow limiting mechanism, airflow backflow can be prevented, pressurized gas can be smoothly filtered, and the gas filtering effect is improved.

The present invention relates to the field of rail transit technology, and discloses a rail transit interval drainage pump station, comprising: a first pressure drainage main pipe, arranged in a left-line interval tunnel; a second pressure drainage main pipe, arranged in a right-line interval tunnel; a roadbed water collection ditch, arranged inside the roadbed, wherein at least two submersible pump groups are arranged in the roadbed water collection ditch; a part of the at least two submersible pump groups is connected in parallel to one of the first pressure drainage main pipe and the second pressure drainage main pipe, and another part of the at least two submersible pump groups is connected in parallel and crosses the communication channel between the left-line interval tunnel and the right-line interval tunnel, and is connected to the other of the first pressure drainage main pipe and the second pressure drainage main pipe. The present invention can effectively reduce the flow rate of each submersible pump in the submersible pump group, reduce the effective volume of the required water collection ditch, reduce the impact on the roadbed structure, improve the overall roadbed lateral stability, and enhance drainage safety and reliability.

The invention discloses an efficient hydrogen group direct reduction shaft furnace. Comprising an upper preheating reduction section, a middle isobaric transition section and a lower cooling section, the upper preheating reduction section is sequentially composed of a vault, a vertical cylindrical furnace body and a big-end-down circular-truncated-cone-shaped furnace body from top to bottom. The upper part of the middle isobaric transition section is connected with the preheating reduction section, and the lower part of the middle isobaric transition section is connected with the cooling section. The upper preheating reduction section is designed to be the vertical cylindrical furnace body and the circular-truncated-cone-shaped furnace body, the section of the lower circular-truncated-cone-shaped furnace body is correspondingly enlarged along with volume expansion of pellets, and extrusion bonding between pellet particles and extrusion damage to a furnace body lining are effectively buffered.

The present application relates to superconducting magnet stainless steel framework structure technical field, disclose a kind of little liquid helium's stainless steel framework structure, including container outer cylinder and main magnetic field stainless steel framework, sealing structure is equipped between the container outer cylinder and main magnetic field stainless steel framework;The sealing structure includes shielding magnetic field coil stainless steel framework, sealing cylinder and framework end cover, the shielding magnetic field coil stainless steel framework is set in the inside of container outer cylinder, sealing end cover is equipped between the shielding magnetic field coil stainless steel framework and the outer end of container outer cylinder, the sealing cylinder is located in the inside of shielding magnetic field coil stainless steel framework, the sealing cylinder and the inner end of shielding magnetic field coil stainless steel framework are sealed by framework end cover;A kind of little liquid helium's stainless steel framework structure provided by the present application, solve the problem of high cost of prior art use.

This invention discloses a gas storage tank and its preparation method. The gas storage tank includes a tank body and a damping coating. The damping coating is attached to the inner wall of the tank body. The damping coating includes a semi-dry first damping coating layer, a second damping coating layer, and fiberglass cloth. The fiberglass cloth is embedded between the first and second damping coating layers and fused and cured to form the final shape. The beneficial effects of this invention are: it abandons traditional passive noise reduction methods such as external sound insulation cotton and silencers, which have strong penetration and slow attenuation of low-frequency noise and have limited effectiveness. By forming a double-layer coupled structure of a metal substrate and a composite damping layer within the metal wall of the gas storage tank, firstly, when the gas storage tank is subjected to forced vibration, the bending deformation of the metal wall of the gas storage tank will cause the damping coating on the surface to undergo shear deformation synchronously; secondly, the polymer chains and filler particles inside the damping coating will generate internal friction due to relative displacement, converting the mechanical energy of the vibration into heat energy for dissipation, thereby weakening the vibration amplitude and reducing the resonance amplitude from the source.