13results about How to "Normal circulation" patented technology

The utility model provides a coal mine ventilation protection structure which comprises a first air duct, a draught fan is arranged in the first air duct, the other end of the first air duct is provided with a second air duct through a telescopic ventilation assembly, the second air duct is in an L shape and plays a role in rainproof protection, and a dustproof net is arranged at the bottom of the second air duct and plays a role in dustproof protection. The telescopic ventilation assembly and the L-shaped second air cylinder are arranged at the other end of the first air cylinder, ventilation can be switched on rainy days and sunny days, more air can circulate by means of the larger filtering ventilation area of the cylindrical filter screen, the ventilation effect on the sunny days is improved, meanwhile, by means of butt joint of the first air cylinder and the second air cylinder, the ventilation effect on the sunny days is improved, and the ventilation effect on the sunny days is improved. The second air duct is used for achieving the rain-proof and normal ventilation effect on rainy days, the applicability of coal mine ventilation is improved, and therefore the coal mine ventilation effect and the rain-proof protection effect are improved.

The utility model discloses a kind of lightweight double-sided circuit boards, it is related to double-sided circuit board technical field, including first circuit board and second circuit board, fixedly connected with partition plate between first circuit board and second circuit board, four corners of the upper surface of partition plate are all fixedly installed with first locating block, first locating block is located four corners of first circuit board, the lower surface of partition plate is fixedly installed with vertical plate, vertical plate is fixedly connected with second circuit board, the utility model is distinguished first circuit board and second circuit board by setting partition plate, the upper surface of first circuit board is provided with first locating block to determine the position of first circuit board, lower surface is provided with vertical plate to determine the position of second circuit board, the overall state of being hollow can speed up the discharge rate of heat, and entire structure is compared to traditional whole plate body, with smaller volume and lighter quality effect, more lightweight.

The present disclosure relates to a motor cooling structure, a motor and a vehicle, the motor cooling structure comprising: a stator core, a plurality of through holes being formed in the stator core and extending along the axial direction of the stator core, the plurality of through holes being distributed along the circumferential direction of the stator core; and a shell being sealingly arranged at both ends of the stator core, the shell being provided with a cavity, the cavity being in communication with the plurality of through holes to form a cooling channel, the cooling channel being provided with an inlet and an outlet. The present disclosure forms the cooling channel by forming the through holes in the stator core and the shells at both ends of the stator core, and the cooling liquid enters from the inlet and is discharged from the outlet to form a circulation, which is assisted by the structure of the stator core and the shell to form a complete cooling structure. After the cooling channel is filled with the cooling liquid, only a fixed flow of the cooling liquid is needed to ensure that the cooling system can circulate normally, and the heat dissipation effect of the motor system will not change, which is simple, easy to use and cost-saving.

The invention relates to the technical field of check valves, in particular to a municipal pipeline spring type safety check valve which comprises a valve body, a water inlet connecting pipe is fixedly mounted on the lower portion of the inner wall of one side of the valve body, a water outlet connecting pipe is fixedly mounted in the middle of the inner wall of the other side of the valve body, and a pressure relief cavity is formed in the upper portion of the valve body. The check valve has the advantages that water enters the valve body through the water inlet connecting pipe, the valve clack is jacked upwards due to pressure, the water enters the check valve cavity and is discharged through the water outlet connecting pipe, when water pressure is reduced or water flow stops, the spring can elastically extrude the spring abutting piece, the valve clack and the sealing gasket are clamped and reset, water backflow is effectively prevented, and the service life of the check valve is prolonged. Meanwhile, an auxiliary check pressing piece is arranged on the inner side of the check valve cavity, the turning angle is adjusted according to pressure changes, obliquely downward pressure is exerted on the upper portion of the valve clack all the time, the valve clack cannot rise rapidly due to sudden increase of the pressure, and the valve clack is helped to reset as soon as possible when the pressure becomes small.

The application discloses a buried pipeline dredging device, which comprises a crushing structure, one side of the crushing structure is provided with a driving source structure, a first driving structure is fixedly installed on the side, away from the crushing structure, of the driving source structure, and a guide structure is fixedly connected to the side, away from the driving source structure, of the first driving structure. The buried pipeline dredging device is characterized in that a driving motor drives a rotating plate to rotate through a worm gear transmission part, and then drives a drill bit to rotate; the drill bit can crush obstacles in the pipeline while rotating, so that the obstacles cannot affect the normal conveying of the pipeline; meanwhile, the annular plate drives the grinding block to rotate while rotating; the friction end surface of the grinding block is in contact with the inner wall of the pipeline, so that the grinding block can rub against the inside of the pipeline, thereby further grinding and removing the objects adhered to the inner wall of the pipeline, and the cleaning effect of the obstacles in the pipeline is improved.

The utility model relates to exhaust cylinder cooling device technical field, and disclose an exhaust cylinder cooling device for steam turbine, including cylinder, the inner chamber of cylinder is installed with cooling pipe, the outer wall fixed assembly of cooling pipe has monitoring box, the top of monitoring box is installed with water outlet pipe, the inner chamber rotationally connected of monitoring box has the shaft, the outer wall fixed assembly of shaft has the impeller. This exhaust cylinder cooling device for steam turbine, through being provided with the monitoring box, and setting up the shaft and the impeller in the inner chamber of monitoring box, under the impact of water flow, make the impeller rotate, once the cooling pipe appears the block, will result in the water flow velocity slows down, thereby causing the rotating speed of impeller to slow down, at this moment the number of electric signal produced by trigger rod in a certain time reduces, and under the action of controller discovers in time, thereby can judge the water flow velocity of cooling pipe slows down, avoid traditional equipment not to have the monitoring of cooling water velocity.

The present application relates to the field of pipelines, and specifically discloses a composite sewage pipe and a construction method, which includes a pipe body and a baffle, the side wall of the baffle is in conflict with the inner wall of the pipe body, the baffle is inclined along the sewage transmission direction, the height of the baffle decreases along the sewage transmission direction, the upper end of the baffle is hinged on the inner wall of the pipe body, and the lower end of the baffle is in conflict with the inner wall of the pipe body. The present application has the effect of limiting the backflow of sewage in the sewage pipe.

The utility model relates to the technical field of shaving board processing, and provides an air compressor for shaving board production, which comprises a shaving board air compressor body, an air compressor heat dissipation plate is arranged on the side edge of the shaving board air compressor body, a plurality of groups of heat dissipation hole grooves are formed in the surface of the air compressor heat dissipation plate, and a fixing block is fixedly connected to the outer end of the shaving board air compressor body. A first sliding rod is fixedly connected to one end of the fixing block, a sliding block is arranged at the front end of the air compressor heat dissipation plate and slidably connected to the outer wall of the first sliding rod through a first sliding groove, and a second sliding rod is fixedly connected to the outer end of the sliding block; the cleaning pad is attached to the surface of the heat dissipation plate of the air compressor, then the sliding block is driven by the push-pull block to move, the cleaning pad is made to move on the heat dissipation plate of the air compressor in an attached mode, and therefore wood dust covering the surface of the heat dissipation plate of the air compressor is cleaned, and heat dissipation hole grooves can conduct air circulation normally; the air compressor heat dissipation plate can achieve a normal heat dissipation effect, and the service life of the shaving board air compressor body is prolonged.

The invention discloses a while-drilling leaking stoppage tool and a using method. The while-drilling leaking stoppage tool comprises an upper connector and a lower connector which are in threaded connection, a leaking stoppage hole is formed in the outer wall of the upper connector, a sliding sleeve ball seat is installed in the upper connector, a spring is installed in the lower connector, the spring makes contact with the sliding sleeve ball seat, and a pressure relief hole is formed in the outer wall of the lower connector. The plugging agent can be applied to plugging of formation fracture leakage in the drilling process of sidetrack drilling of a vertical well, a directional well, a horizontal well and an old well, drilling fluid is prevented from continuously leaking to formation fractures, the drilling fluid can normally circulate, and normal drilling is achieved; the operation process is simple, the plugging agent can smoothly flow to the annulus of the leakage position from the interior of the drill rod, the plugging effect is good, and the well drilling plugging period is shortened.

The utility model provides a covered stent which is of a tubular structure with two open ends and comprises a main stent body, and a surface covering film is arranged on the surface of the main stent body. The main body stent comprises a plurality of supporting skeletons, the supporting skeletons are arranged at intervals in the axial direction of the covered stent, and every two adjacent supporting skeletons are connected through a surface covering film; the covered stent further comprises a bare stent, the near-end side of the main stent comprises a connecting stent, the bare stent is connected with the connecting stent through a connecting rod, and due to the arrangement of the bare stent, it can be ensured that in a straight-pipe-section blood vessel at the bifurcation opening position of the bifurcated blood vessel, when the two stents are matched in parallel, closed residual cavities are avoided, blood can normally circulate, and further, the blood can be prevented from being blocked. When the bare stents are pressed in the radial direction, at least one side in the circumferential direction can deform, and after deformation, the two bare stents can form two semicircular bare stents, so that the two semicircular bare stents are attached to the tube wall of a straight tube section blood vessel to form a complete circular structure, and the radial supporting force of the position is enhanced while a closed residual cavity is prevented from being formed.

This application relates to an integrated air conditioner, belonging to the field of air conditioning technology. The integrated air conditioner of this application is applied to an installation body, including an installation channel, an indoor unit, an outdoor unit, and refrigerant circulation piping. The installation channel is located inside the installation body, which includes inner and outer side walls arranged opposite each other in the thickness direction, and the installation body divides the space into indoor and outdoor spaces. The indoor unit is located within the inner side wall, and includes a first indoor air inlet and an indoor air outlet located in the indoor space. The outdoor unit is located within the outer side wall, and includes an outdoor air inlet and an outdoor air outlet located in the outdoor space. The refrigerant circulation piping is located within the installation channel and is connected to both the indoor and outdoor units to circulate refrigerant between them. The technical solution disclosed in this application can solve the problems of existing air conditioners occupying a large space and affecting aesthetics and uniformity.

This invention discloses an automatic putty spraying switch mechanism, belonging to the field of construction robot technology. One end of the feed pipe is nested in the side of the connecting rod support, and the other end of the feed pipe is fitted with a sealing plug. An inner hole is formed at the center of the sealing plug. A ejector pin is embedded in the end of the feed pipe away from the sealing plug. A reset sleeve is nested at the front end of the ejector pin, and a sleeve pre-tightening component is nested and fixed at the front end of the reset sleeve. The reset sleeve is clamped and fixed to the surface of the ejector pin by the sleeve pre-tightening component. The rear end of the reset sleeve is embedded in the end of the switch actuation linkage. A sealing nut is provided on the other side of the switch actuation linkage. A drive linkage is rotatably connected to the other end of the switch actuation linkage, and a motor flange is rotatably connected to the other end of the drive linkage. The motor flange is driven to rotate by a servo motor. This product is used to replace conventional putty nozzles. By adjusting the motor rotation angle, the spray volume can be freely controlled, and instantaneous opening and closing of putty spraying with a duration of less than one second can be achieved.

The invention discloses a drainage structure for water conservancy irrigation and a drainage irrigation method, and relates to the technical field of water conservancy irrigation, the drainage structure comprises a drainage pipeline, an irrigation canal and a mechanical floating assembly, the drainage pipeline is arranged in a dam body, one end of the drainage pipeline is connected with a water area, and the other end of the drainage pipeline is connected with the irrigation canal; two sealing plates are correspondingly arranged at the opening of the other end of the drainage pipeline, and the sealing plates are rotationally arranged at the opening of the other end of the drainage pipeline; the mechanical floating assembly comprises a connecting strip, a balancing weight and a floating block, a driving part is arranged at the bottom of the connecting strip, and the top of the connecting strip is connected with the balancing weight, the size of the water outlet can be automatically and adaptively adjusted according to the height of the water area liquid level, so that it is guaranteed that the water flow is unchanged, irrigation accuracy is guaranteed, and waste of water sources is avoided; the change of mechanical control water flow is more stable, the service life is long, and the structure is stable.