9results about How to "Smooth air intake" patented technology

The utility model provides a range hood which comprises a fan, an exhaust fume collecting hood with a bottom inlet and a fan frame, the fan is fixed on the fan frame and communicated with the bottom inlet, the forward side of the fan frame comprises a front cover plate, a ventilation opening is arranged on the front cover plate, an air inlet of the fan is positioned on the forward side, and the air inlet of the fan is communicated with the ventilation opening. The inner side of the front cover plate is connected with an adsorption module used for adsorbing volatile organic compounds, an adsorption inlet of the adsorption module is exposed out of the ventilation opening, the height of the adsorption module is larger than that of the center line of the air inlet, and a closed inner space is formed in the fan frame to communicate with the bottom inlet and an adsorption outlet of the adsorption module. According to the utility model, on one hand, pollutants are adsorbed, so that air flow purification is realized, treatment of pollutants such as VOCs in a kitchen is realized, and the problems of peculiar smell in the kitchen and the like are solved; and on the other hand, the negative pressure of a local area is improved, the problem that the flow speed of the whole area of the air inlet of the fan is uneven due to size reduction of the fan frame is solved, air volume is increased, and rotating speed and noise are reduced.

The utility model discloses an electric hair dryer, including handle and shell, the top fixedly connected with shell of handle, and the right side fixedly connected with the connecting sleeve of shell, the inside of connecting sleeve is inserted with fixed ring, and the inside fixed insertion of fixed ring has filter board, the right side fixedly connected with the air inlet of fixed ring, and the central position of air inlet is equipped with the circular groove, the inside of circular groove is inserted with second movable rod, and the left side fixedly connected with first movable rod of second movable rod, the central position of filter board is equipped with hole groove. The utility model discloses through filter board can filter to small dust, and its surface is through smooth processing (such as electroplating, spraying oil -repellent layer), makes dust not easy to adhere, more easily be blown away or clean easily fall off, and through the fixed ring rotation can clean the stubborn dirt that filter board surface adheres, guarantee the smooth of air intake, and then reach the effect of anti -clogging, and prolong the life of hair dryer.

The utility model relates to the field of biomass boiler relates to a boiler gas chamber ash removal device, the utility model discloses a furnace body, scrape ash subassembly, dust suction subassembly and guide component, and the lower inside of furnace body is equipped with the air chamber, and the guide component includes guide rail and sliding block, and the guide rail is fixed in the air chamber vertically, and the sliding block is slidably arranged on the guide rail, and the scrape ash subassembly includes motor no.

The present application relates to the technical field of metal casting, and particularly discloses a core making machine, which is provided with at least two regulating systems in the circumferential direction of the side wall of a core box. During sand shooting, the exhaust adjusting branch of the regulating system controls the exhaust amount during sand shooting to avoid excessive pressure drop loss, and the negative pressure adjusting branch adjusts the vacuum degree in the cavity to increase the pressure difference between the region and other regions, improve the flowability of the sand, and facilitate compacting of the sand, thereby achieving good core making effect. During solidification and blowing, the blowing mechanism can blow triethylamine gas into the cavity through the top and side of the core box, achieve the best solidification and air intake combination, increase the air intake area, shorten the solidification time, improve the solidification efficiency, and increase the opening of the exhaust adjusting branch to increase the exhaust amount of the corresponding region and ensure smooth air intake. The present application also provides a sand shooting and solidification process control method applied to the core making machine.

The utility model provides a detection valve, which comprises: a valve body, the inner wall of its pipe body forms a support wall and a bent sealing wall; a valve core, which includes a valve rod received in the pipe body, a connecting wall formed at the bottom end of the valve rod, and a flanging bent upward from the connecting wall; the valve rod, the connecting wall and the flanging jointly enclose a sealing groove; a valve rod latch, sleeved on the top end of the valve rod, enabling the first support step to be clamped in the clamping groove, and forming a sliding connection with the pipe body, a first channel is arranged between the valve rod latch and the pipe body; the connecting wall and the flanging are both located below the support wall, and the sealing wall extends into the sealing groove, a second channel is arranged between the sealing wall and the valve rod; a spring, the two ends of which respectively abut against the second support step and the support wall; a sealing ring, installed in the sealing groove and matching the size of the sealing groove, when the valve core is in a reset state, the sealing wall presses against the upper end face of the sealing ring. Compared with the related technology, the detection valve of the utility model has a long service life and stable sealing performance.

This utility model provides a one-way valve for testing, comprising: a valve body, which includes a pipe body and a retaining wall inside the pipe body; the retaining wall includes a spaced top wall and a bottom wall, and a side wall connecting the top wall and the bottom wall; the side wall includes a first annular wall, a first transition annular wall, and a second annular wall from top to bottom, with the inner diameter gradually increasing; a valve core, which has a connecting wall at its bottom end, a sealing groove on the outer periphery of the connecting wall, a frustum-shaped top surface that abuts against the first transition annular wall and forms a sliding connection, and the outer surface of the connecting wall abuts against the second annular wall and forms a sliding connection; a valve stem latch, which is fitted onto the top end of the valve stem to form a snap-fit ​​interference fit and a sliding connection with the pipe body; a spring, which is fitted onto the valve stem and abuts against the locking body and the retaining wall at both ends; and a sealing ring, which is installed in the sealing groove and whose size matches the size of the sealing groove, and abuts against the second annular wall to form a sealing sliding connection. Compared with related technologies, the one-way valve for testing of this utility model has stable sealing performance and a long service life.

The utility model relates to the technical field of cooling towers, and discloses a water-saving cooling tower which comprises a tower body, the air inlet hole is formed in the front side of the outer part of the tower body; the connecting pipe is fixedly connected to the bottom of the tower body; the treatment box is fixedly connected to the bottom of the connecting pipe; the filter plate is mounted on the left side of the interior of the treatment box; the circulating pump is fixedly connected to the right side of the exterior of the treatment box, the input end of the circulating pump is fixedly connected to the interior of the treatment box, and the conveying pipe is fixedly connected to the output end of the circulating pump; the guide pipe is fixedly connected to the top of the conveying pipe, and the spray heads are installed on the two sides of the lower portion of the guide pipe. According to the utility model, the water generated by spraying can be conveniently recycled, and the waste of water resources is reduced, so that the operation cost is reduced.

This invention relates to the field of laptop computer design technology, specifically to an integrated laptop computer with a hidden dustproof and heat dissipation bracket. The integrated design includes a D-shell, a screen mounted on the D-shell, a connecting hinge mounted on the screen, and one end of the connecting hinge passing through the D-shell. A heat dissipation module is housed inside the D-shell, and an air intake channel corresponding to the heat dissipation module is located at the bottom of the D-shell. A dustproof and heat dissipation grille connected to a linkage component is located within the air intake channel, and the linkage component is connected to the connecting hinge. This design solves the problem of traditional laptops using multiple feet mounted on the bottom of the D-shell to raise the chassis and create ventilation gaps between the ventilation holes and the desktop. However, during high-power operation, this gap is often insufficient to meet heat dissipation requirements, resulting in insufficient airflow and low heat dissipation efficiency.

The present application relates to the field of fire warning device, especially to a kind of fire hazard monitoring equipment for welding operation.It includes monitoring box, sampling assembly and monitoring alarm assembly.The inside of monitoring box is divided into drive chamber, confluence chamber and monitoring chamber by partition combination;multiple groups of sampling assembly are located outside monitoring box, and the outlet end is connected with monitoring chamber one by one;multiple groups of monitoring alarm assembly are set in monitoring chamber one by one, gas sample is introduced when moving up, on the one hand, the introduced gas sample is compressed when moving down, the particle concentration in gas is improved, on the other hand, airflow is generated, which drives the particles in gas to flow uniformly;finally, the particle size and content in gas sample at different positions are detected by monitoring end of multiple groups of monitoring alarm assembly respectively, fire hazard is judged and alarm is sent.The present application adds compression concentration, airflow driving and comparative analysis monitoring mode, distinguishes whether the particle is generated by welding or fire hazard, and then reduces misjudgment and improves the accuracy of monitoring.