11results about How to "Stop the flow" patented technology

The closure member is configured to avoid or reduce a leak rate on the relief valve. These configurations may include a primary seal and a secondary seal, the combination of which may significantly reduce flow exiting the device. The secondary seal may be embodied as a resilient member, such as a curved or pleated metal spring. The resilient member may be compressed and extended in response to the presence or absence of a load. The feature may maintain contact between the resilient member and the seat of the valve.

The application belongs to the technical field of engines and discloses an engine EGR pipeline. The first pipeline and the second pipeline are parallel to each other, the first pipeline is wavy, the first channel and the second channel in the first pipeline are alternately connected, the second pipeline is wavy, the third channel and the fourth channel in the second pipeline are alternately connected, the first auxiliary pipeline is connected at the wave trough where the first channel and the second channel meet, the first auxiliary pipeline extends along the first channel and communicates with the fourth channel, and the other end of the first auxiliary pipeline is bent towards the second pipeline; the second auxiliary pipeline is connected at the wave peak where the third channel and the fourth channel meet, the second auxiliary pipeline extends along the fourth channel and communicates with the first channel, and the other end of the second auxiliary pipeline is bent towards the first pipeline; the problem that the valve plate of the one-way valve is broken under impact in the prior art, resulting in the problem of engine cylinder pulling, is solved.

The utility model relates to the field of singeing machines, and discloses a burning slag collecting device of a singeing machine, which comprises a support frame, a collecting mechanism and a blowing mechanism are arranged at the top of the support frame, the collecting mechanism comprises a burner, the outer wall of the burner is fixedly connected with the outer wall of the support frame, the top of the support frame is fixedly connected with a support cover, and the support cover is fixedly connected with the blowing mechanism. A dust suction pipe is fixedly connected to the top of the inner wall of the supporting cover, a dust suction cover is fixedly connected to the bottom end of the dust suction pipe, a fixing pipe is fixedly connected to the left side of the dust suction pipe, and a dust suction fan is fixedly connected to the inner wall of the fixing pipe. According to the device disclosed by the utility model, by arranging the collecting mechanism, combustion slag generated in the singeing process can be sucked, the filter screen plate can effectively filter and intercept the combustion slag and impurities and can prevent large-particle impurities and the combustion slag from continuously flowing along with air flow, and the scraper plate can scrape off the impurities filtered on the filter screen plate, so that the impurities are prevented from blocking filter holes; and the stability and continuity of the filtering effect are ensured.

The utility model belongs to the technical field of household appliances, concretely relates to a water leakage prevention power-off and water stop device, including the waterway passageway of setting in the pipeline, the pipeline still is equipped with control passageway, the inside of control passageway is equipped with the sealing element of being able to slide;Sealing element connects the electromagnetic valve body of driving its movement, and the electromagnetic valve body includes valve body, and the inside of valve body is equipped with electromagnetic device, and the inside of valve body still is equipped with the transmission rod of being used with electromagnetic device, and transmission rod connects sealing element, and the spring of making transmission rod reset is equipped between electromagnetic device and transmission rod.

The utility model discloses a secondary aluminum waste gas dusting machine with a filtering function, which comprises a filter box, a gas outlet of the filter box extends into a fan, a net cage is mounted in the filter box and positioned above air filter cotton, a filter screen is mounted in the filter box and positioned above a baffle a, and a baffle b is mounted in the filter box and positioned above the baffle b. The baffle a is located above the baffle b, the baffle b is located above the baffle c, a guide frame is installed in the filter box, the filter box is rotationally connected with a feeding shaft, gradient sound-absorbing cotton is bonded to the outer side of the filter box, the gradient sound-absorbing cotton is located on the inner side of the honeycomb core plate, and the surface of the honeycomb core plate is coated with a sound insulation layer. A baffle, a filter screen, air filter cotton and the like in the filter box are matched to filter waste gas, and the filtering effect is good; the gradient sound absorption cotton, the honeycomb core plate and the sound insulation layer on the outer side of the filter box are matched to achieve a good noise reduction effect.

The utility model discloses a miniature electric liquid separator and a reagent bottle thereof. The miniature electric liquid separator comprises a shell, a lower cavity, a middle cavity and an upper cavity which are sequentially formed in the shell from bottom to top, and an interaction assembly arranged at the top of the shell, a micro peristaltic pump is fixed on the inner side of the lower cavity; a storage battery and a wireless charging coil are fixed on the inner side of the middle cavity; a PCB (Printed Circuit Board) control board for receiving and transmitting a control instruction to the interaction assembly and controlling the micro peristaltic pump to accurately transfer liquid is fixed on the inner side of the upper cavity; the miniature peristaltic pump, the storage battery and the PCB control board are sequentially arranged in the lower cavity, the middle cavity and the upper cavity of the shell, so that the electric liquid separator is simple in structure, convenient to transfer liquid, high in accuracy and low in manufacturing cost, and pollution caused by misoperation is prevented. And the urgent demand of scientific research personnel on the pipetting tool can be well met.

This utility model relates to the field of gate valve technology and proposes a gate valve opening and closing actuator, including a guide tube. A hollow plate is fixed to the outer wall of the guide tube, and the hollow plate communicates with the inner side of the guide tube. A rotating hole is provided in the middle of the top surface of the hollow plate, and the rotating hole communicates with the inner side of the hollow plate. A threaded cylinder is movably inserted into the inner side of the rotating hole. A first toothed ring is fixedly sleeved on the upper outer wall of the threaded cylinder. A threaded post is threadedly connected to the inner side of the threaded cylinder, and a gate plate is fixed at the lower end of the threaded post. The gate plate is located inside the guide tube, and a fixing plate is fixed to the upper outer wall of the hollow plate. When the gear of this utility model meshes with the first toothed ring, the gate plate is opened and closed by a motor drive. When the second toothed ring meshes with the first toothed ring, the gate plate is opened and closed by manually rotating the second toothed ring. By moving the movable plate, the two opening and closing methods can be switched to cope with motor failure or power failure, thereby improving adaptability.

The utility model discloses a motor insulation bearing assembly which comprises a disc-shaped base, an outer ring fixed in the disc-shaped base, an inner ceramic ring installed at the central axis position in the outer ring and a retainer fixed at one end of the surface of the inner ceramic ring, and a plurality of balls in rolling contact with the inner wall of the outer ring are embedded in the retainer. And a polyimide insulating sleeve is coaxially sleeved in the inner ceramic ring. The outer ring, the balls, the retainer, the inner ceramic ring and the polyimide insulation sleeve are sequentially mounted in the disc-shaped base connected with the motor shell, the current insulation purpose is achieved, meanwhile, the inner ceramic ring and the polyimide insulation sleeve are sleeved with each other, the upper ends and the lower ends of the inner ceramic ring and the polyimide insulation sleeve are in bolted connection, and the purposes of quick disassembly and quick assembly are achieved.

The utility model provides a kind of outdoor blanket convenient to activity, it includes blanket body, the blanket body includes the warm layer and waterproof layer of laminated connection, the blanket body is provided with two activity areas, the activity area includes activity mouth, activity cloth and waterproof cover, the activity mouth is through the warm layer and the waterproof layer, the activity cloth is connected with the warm layer of activity mouth edge, the middle part of waterproof cover forms activity inner chamber, and the two ends of waterproof cover form annular first port and annular second port respectively, the first port is connected with the waterproof layer of the periphery edge of activity mouth, the second port of waterproof cover is provided with annular hem, and the inside of annular hem is provided with elastic contraction rope.The second port of the utility model's waterproof cover is provided with annular hem and elastic contraction rope, so that second port is closed in natural state, to avoid rainwater into, while reducing internal and external gas flow, improve heat preservation effect.

A centrifugal fan comprises a machine shell, an impeller arranged in the machine shell, an air inlet pipe arranged on the machine shell and a front cover plate inserted in the impeller, and the center of a rear cover of the impeller is fixedly connected to a main shaft of a motor, and is characterized in that a plurality of radial ribs are arranged on the right side face of the rear cover plate, and a bearing seat is arranged in the air inlet pipe; a plurality of rib plates are symmetrically connected between the bearing seat and the air inlet pipe, a bearing is installed in the bearing seat, and the front end of the main shaft is connected in the bearing. The utility model has the beneficial effects that the ribs generate reverse centrifugal force when rotating to prevent gas in a high-pressure area from flowing towards the main shaft along the rear cover plate; the front end of the main shaft is connected in the bearing, so that the impeller can be prevented from shaking during rotation, a gap between a front cover plate of the impeller and a shell can be reduced, gas in a high-pressure area is prevented from converging to an inlet of the impeller, and non-contact sealing is realized; therefore, the problem that in the prior art, a sealing element needs to be replaced frequently due to abrasion is solved. Meanwhile, no friction force exists when the main shaft rotates, and mechanical loss of the fan can be reduced.

The invention discloses a multifunctional comprehensive special cable for astronauts to simulate space training, and belongs to the field of cables. The invention discloses a multifunctional comprehensive special cable for simulating space training of astronauts. The multifunctional comprehensive special cable is characterized by comprising a bearing rope arranged in the center of the cable, three pairs of braided shielding wire pairs which are uniformly distributed, a plurality of insulated conductive wire cores, a radial waterproof layer, a longitudinal waterproof layer, an overall shielding layer and an outer protection layer. In the cable manufacturing process, the viscous water-blocking material is applied to the cable, the viscous water-blocking material is changed into an elastic solid through crosslinking to fill gaps of the cable core, once the waterproof isolation protection layer outside the cable is damaged, water entering the cable can be effectively prevented from flowing, normal operation of the cable is protected, and the service life of the cable is prolonged. Meanwhile, the force bearing rope is made of high-strength fibers instead of a common rigid material, so that the flexibility of the cable is improved.