5results about How to "Reduce leakage area" patented technology

The present application relates to the technical field of mixer, in particular to a multi-stage sealed anti-splashing food mixer, which comprises a support frame and a support disc arranged above the support frame, a drive arranged on the support frame and used to drive the support disc to rotate, a stirring barrel arranged above the support disc, a positioning structure arranged on the support disc and used to position the stirring barrel, and a lifting seat arranged above the stirring barrel; a plurality of first hydraulic telescopic rods are fixedly connected to the support frame, and the telescopic ends of the first hydraulic telescopic rods are fixedly connected to the lifting seat; a rotating seat is rotatably sleeved to the outside of the lifting seat; a sealing element matched with the rotating seat is mounted on the top end of the stirring barrel; and a feeding and stirring assembly is mounted on the lifting seat; the lifting seat drives the rotating seat to move downward to a preset position, so that the sealing element is pressed against the connection between the stirring barrel and the rotating seat; a continuous pressing force is applied by the hydraulic pressure, so that the sealing element can still be kept in close contact even in the case of vibration and abrasion, thereby realizing anti-splashing.

The present invention relates to the technical field of safety valve accessory devices, and in particular to a remote-controlled electromagnetic emergency shut-off device; the device can realize a remote emergency shut-off function, has a low cost, and is more convenient to manage; it comprises a crane pipe, a connecting pipe, and a discharge pipe, wherein the input end of the crane pipe is provided with a first switch valve, the output end of the connecting pipe is connected to the input end of the first switch valve, and the output end of the discharge pipe is connected to the input end of the connecting pipe; it also comprises a hydraulic valve, a hand-cranked oil pump, a connecting pipe, a solenoid valve, and a hand-held remote control, wherein a rocker is provided on the hand-cranked oil pump, the hydraulic valve is fixedly arranged on the connecting pipe, an oil delivery pipe is provided on the hydraulic valve, the output end of the hand-cranked oil pump is connected to the input end of the solenoid valve, the output end of the solenoid valve is connected to the input end of the connecting pipe, the output end of the connecting pipe is connected to the input end of the oil delivery pipe, and the hand-held remote control is connected to the solenoid valve through an electrical signal.

The present invention provides a composite durable antistatic gas isolation system and construction method, which solves the problem that the prior art only uses gas isolation plates to block gas, which has the potential safety hazard of gas gas escaping easily and the technical problem of high risk in gas tunnel operation. It comprises a primary lining concrete structure mixed with air sealant, an antistatic polyethylene closed-cell foam board, an isolation plate, and a secondary lining concrete structure mixed with air sealant in sequence; wherein the primary lining concrete structure mixed with air sealant is arranged on the side close to the gas. The present invention can meet the requirements of gas isolation, flame retardancy, antistatic properties and excellent mechanical properties, can avoid gas gas escape as much as possible, and improve the safety of gas tunnel engineering operation.

The invention provides a symmetric molded line variable-pitch twin-screw rotor and a vacuum pump, and belongs to the technical field of vacuum pumps, the symmetric molded line variable-pitch twin-screw rotor comprises a driving rotor and a driven rotor which are meshed with each other, the pitch of the driving rotor and the driven rotor is reduced from the suction end to the exhaust end in the circumferential direction, and the end face molded lines of the driving rotor and the driven rotor are completely the same. Each of the four sections of curves sequentially comprises a tooth crest arc ab, a first section of epicycloid bc, a tooth bottom arc cd and a second section of epicycloid de, and the other four sections of curves and the four sections of curves are arranged in a central symmetry manner. By means of the design, it is ensured that the rotor is evenly stressed in the rotating process, vibration and noise generated by unbalanced stress are reduced, and the stability of the vacuum pump is remarkably improved; and meanwhile, a leakage triangle is omitted, so that the leakage triangle does not exist in the meshing process, the sealing performance is further improved, and gas leakage and energy loss are remarkably reduced.

The utility model provides a vibrating table body structure with a drainage function, which belongs to the technical field of vibrating tables and comprises a vibrating table, a drainage component and an anti-blocking component, and the drainage component comprises two water inlet grooves arranged at the top of a vibrating table plate. Water can enter a water inlet groove through a water inlet hole in a protective cover, then enters a base through a water inlet pipe and is discharged to a connector through a guide plate to be discharged, a user needs to connect the connector with an external pipeline during installation, waterproof cloth needs to be installed on the four sides of a vibration table during installation of the vibration table, and large-area leakage is prevented. When large-area leakage occurs, water overflows from the four edges of the vibration table, is accumulated on the base and can be isolated by the isolation frame, so that the water is discharged into the base through the emergency hole, and condensed water in the vibration table is discharged through the condensed water drainage pipe, and therefore, the purposes of stable drainage and emergency drainage are achieved.