14results about How to "Avoid impact wear" patented technology

The utility model relates to the technical field of boilers, in particular to a cross-shaped abrasion-proof structure of a CFB (circulating fluid bed) boiler, which comprises a transverse plate and a vertical plate, the transverse plate and the vertical plate are clamped together through a mortise and tenon joint structure to form a cross shape, and a movable gap is reserved; clamping grooves are symmetrically formed in the transverse plate, and a plurality of sawteeth are evenly distributed on the side, away from the clamping grooves, of the transverse plate. During use, the transverse plate is clamped on the wall of a water-cooled tube, the sawtooth side of the transverse plate is lower than the wall of a boiler, the vertical plate is connected with the transverse plate in a mortise and tenon joint mode, and the two ends of the vertical plate are welded to the fins. At the moment, the vertical plate is fixed, the transverse plate is inclined under the action of a dynamic field in the furnace to play a role in guiding, and meanwhile, large particles can be prevented from rebounding to the water cooling pipe according to the inclination direction to avoid impact abrasion; in addition, the transverse plate adopts a sawtooth-shaped outer edge, most of wall-attached materials fall from sawteeth and participate in heat exchange of the water cooling wall, and the heat exchange efficiency is improved; meanwhile, the sawtooth structure can reduce resistance to a near-wall flow field, material flow can be dredged, and the flow rate of gas-solid flow in the furnace is not reduced.

The application relates to the technical field of concentration determination, in particular to an on-line ion measuring device for calcium chloride solution, which solves the problems of the existing detection mode of the critical angle refraction principle for the refractive index of the calcium chloride solution, realizes the determination of the ion concentration in the calcium chloride solution, the surface of the prism is easy to be left with and attached with dirt, the measuring precision is affected and the like. The on-line ion measuring device for calcium chloride solution comprises a pipeline connecting mechanism, a sealed refraction mechanism and a directional flow guiding mechanism, the inner side of the upper end of the pipeline connecting mechanism is provided with the sealed refraction mechanism, the bottom end of the sealed refraction mechanism is provided with the directional flow guiding mechanism, and the rear end surface of the pipeline connecting mechanism is provided with a driving adjusting mechanism. The prism surface in the critical angle refraction principle detection mode is quickly washed and sealed and protected, the surface of the prism is effectively kept clean in the ion concentration determination process of the calcium chloride solution, the prism is prevented from being impacted, and the protection effect is good.

The invention discloses a convenient cast steel knife-shaped gate valve and an assembling method thereof, the convenient cast steel knife-shaped gate valve comprises a valve body used for communicating pipelines on two sides, and sealing assemblies are symmetrically mounted in the valve body close to the middle and used for performing contact sealing between the valve body and a valve clack. According to the knife type gate valve, the sealing assemblies are symmetrically arranged on the two sides of the valve clack, so that the two sides of the valve clack can be extruded and sealed when the valve clack is closed, the sealing cut-off sealing effect of the knife type gate valve is improved, meanwhile, the protection base is arranged at the inner bottom of the valve body, and therefore the protection base can abut against and fix the sealing assemblies on the two sides when the sealing assemblies are installed; the structure is simple, the stability in the using process is improved, the bottom of the valve clack which rapidly descends to be closed can be borne and protected, the valve clack is prevented from impacting and abrading the interior of the valve body, the service life of the valve body is prolonged, the elastic sealing sleeve is arranged in the stuffing box, the adaptability when internal stuffing is pressed is guaranteed, and then the sealing effect of the stuffing box is improved.

The utility model relates to a ball mill combined feeding device which comprises a feeding installation table and a material box installed above the feeding installation table, the material box comprises a buffering bin body and a discharging bin body, a feeding port is formed in the top of the buffering bin body, an overflow port is formed in the side wall of the buffering bin body, and the discharging bin body is located on one side of the buffering bin body and communicated with the overflow port. An abrasive hopper is mounted at the top of the discharging bin body, and a discharging opening is formed in the bottom; the bottom of the discharging opening is detachably connected with a conveying pipe, the other end of the conveying pipe is detachably connected with a feeding pipe, the other end of the feeding pipe is communicated to a ball mill, and the ball mill is located below the side of the feeding installation table. By optimizing the structures of the feeding bin body, the conveying pipe and the feeding pipe, the impact and abrasion of materials and grinding materials on the feeding structure and the ball mill can be effectively reduced, the maintenance frequency is greatly reduced, the maintenance amount is reduced, the maintenance time is shortened, the equipment failure rate and the shutdown maintenance time are reduced, the production operation rate is ensured, and cost reduction and efficiency improvement are realized.

The utility model relates to the technical field of disinfection devices, and discloses a cross infection prevention disinfection device for ICU (Intensive Care Unit) intensive care, which comprises a disinfection treatment bin, an anti-wear disinfection mechanism is arranged on the disinfection treatment bin, and a drying treatment mechanism is arranged on the right side of the inner wall of the disinfection treatment bin. The anti-abrasion disinfection mechanism comprises a lifting supporting frame, an ultrasonic generator body, a blow-down valve and a rotating disc, and the top of the rotating disc is fixedly connected with a limiting protrusion. Through the matching design of the inserting plates and the vertical spacing rods, a hollow inner cavity can be formed, so that the inner cavity can be used for independently storing and treating devices, the problem of collision abrasion between the devices in the disinfection process is avoided, and through the design of the silicon rubber case, the silicon rubber pad and the silicon rubber bulges, the disinfection effect is improved. The structure is in flexible contact with the device, the problem of abrasion caused by collision between the plug board and the vertical spacing rod and the device is avoided, the quality of the device is guaranteed, and the service life of the device is fully prolonged.

The invention discloses a test device for a shipborne high-speed boat engine, and the invention relates to the field of mechanical equipment testing technology, including a composite mechanism. The test device for the shipborne high-speed boat engine is designed with a composite mechanism, and the bearing plate is controlled to slide on the surface of the slide rail block, so as to achieve the function of regulating the spacing, and the auxiliary slide rail plays the role of auxiliary sliding, so as to ensure the stability of the sliding of the components, and avoid the displacement when the engine is carried, and then the clamp is controlled by an electric push rod to fix the engine, and the shaking of the engine is prevented during the detection, so as to avoid affecting the detection effect, and the clamp drives the clamp mechanism to fix the engine, and the slide block plays the role of guiding, so as to avoid the displacement of the clamp mechanism when it moves, and improve the accuracy of the operation, and the clamp mechanism is adjusted according to the size of the engine, so as to achieve the function of expanding the scope of application, improve the applicability of the clamp, and prevent the unstable fixing of the engine.

The application discloses an integrated sensor structure, aiming at solving the problems that sensors in the prior art cannot accurately measure the inclination, the rotating speed and the pressure and have a low service life, and adopting a protective cover part and a mounting part to be installed with a sensor part, so that the parts in the sensor part can be protected in multiple layers through the protective cover part, the mounting part and a shell part, and the X-axis inclination, the Y-axis inclination, the Z-axis rotating angle and the pressure of a drilling tool can be measured, stored and transmitted through a first measuring part and a second measuring part in the sensor part.

This utility model belongs to the field of ceiling spring pressing technology, and discloses a gantry hydraulic press for pressing ceiling springs. It includes a base, a lower template connected to the base, a gantry frame connected to the base, a hydraulic rod connected to the gantry frame, a mounting seat connected to the hydraulic rod, and an upper template connected to the mounting seat. The upper and lower templates cooperate with each other. The base has a collection port and a collection groove, with the collection port communicating with the collection groove. A collection box is slidably connected to the inner wall of the collection groove. A top plate is connected to the mounting seat, and a shielding frame is slidably connected to the top plate. The shielding frame cooperates with the collection port and has a sliding groove. A slider is connected to the top plate, and the slider is slidably connected to the sliding groove. A spring is connected to the slider, and the other end of the spring is connected to the inner wall of the sliding groove. This utility model can collect debris generated during the pressing process, reducing the threat of debris scattering to the health of operators and pollution to the workshop environment.

The application discloses a kind of automatic carton sealing and labeling device, belong to carton sealing and labeling device field.The application is positioned by being made into positioning by multiple cyclic motion sealing assembly being set on conveying belt, using the speed difference of automatic sealing table and conveying belt to make carton in continuous motion naturally close to abutting block, realize sealing assembly and carton synchronous completion sealing and labeling, solve the restriction of traditional intermittent stop mode to production line efficiency;By setting the stop plate to thin hard smooth material, a rigid support surface is formed below the hinge, ensuring the flatness of the top surface of the carton and the gapless bonding of the adhesive tape;By pressing the rod and the rack groove, the electric push rod continues to press down, and the speed increasing transmission of the bevel gear set is automatically converted into a pull rope release to drive the stop plate to retract, and the reset is triggered by the release block on the return path, realizing the timing of the mechanical linkage and automatic cycle reset when retracting, without the need for sensors to meet the continuous operation requirements of high-speed production line.

The utility model relates to a concrete blanking buffering bin hopper, and belongs to the technical field of concrete production, the concrete blanking buffering bin hopper comprises a material hopper, a butt joint cylinder is embedded in the bottom wall of the material hopper in a penetrating manner, a plurality of discharging holes are formed in the butt joint cylinder, the lower end of the butt joint cylinder is seamlessly connected with a discharging cylinder, the discharging cylinder is provided with discharging holes communicated with the discharging holes, and the discharging holes are communicated with the discharging holes. A buffering structure for buffering discharged materials is arranged on the discharging seat; a buffer seat located on the lower side of the discharging barrel is arranged at the lower end of the material hopper, the left side and the right side of the upper surface of the buffer seat are obliquely arranged downwards based on the center, and discharging seats obliquely arranged downwards are connected to the left side and the right side of the buffer seat; according to the concrete blanking buffer hopper, when materials are discharged onto the conveying belt through the inclined surface of the discharging seat, the buffer structure buffers the materials and slows down the flow speed, and the situation that the service life of the conveying belt is shortened due to impact abrasion caused by the fact that the traditional materials directly fall onto the conveying belt is avoided.

The utility model provides an anti-blocking coal drop pipe. The anti-blocking coal drop pipe comprises a coal drop pipe body and a coal drop pipe anti-blocking structure. The coal drop pipe anti-blocking structure comprises a fixing frame, a cylindrical cam, a driving shaft, a driven rod and a reciprocating push rod, the fixing frame is fixedly connected with the side wall of the coal drop pipe body, the driving shaft penetrates through the cylindrical cam and is fixedly connected with the cylindrical cam, the two ends of the driving shaft are connected with the fixing frame through bearings, and the driving shaft is parallel to the length direction of the coal drop pipe body. One end of the driving shaft is fixedly connected with an output shaft of the motor, a curved groove is formed in the cylindrical cam along the arc-shaped outer wall, one end of the driven rod extends into the groove, the other end of the driven rod extends into the coal drop pipe body and is fixedly connected with the reciprocating push rod, and the driven rod is perpendicular to the length direction of the reciprocating push rod. A positioning rod is fixedly connected to the inner wall of the coal drop pipe body, a positioning ring is arranged at the other end of the positioning rod, the positioning rod is parallel to the driven rod in direction, and the reciprocating push rod penetrates through the positioning ring. Efficient conveying of pulverized coal in the coal falling pipe is achieved.

The application provides a coal face continuous cutting coal side support system and a construction method, the coal side support system comprises: a protective net, the protective net is made of a bidirectional tensile nonmetal composite net and is woven by using aramid fiber reinforced polypropylene material base materials; and an anchoring assembly. The coal face continuous cutting coal side support system provided by the application is matched with the protective net, the anchoring assembly and the connecting assembly, all of the protective net, the anchor rod and the connecting assembly are made of nonmetal composite materials, the support components can be directly cut when the coal mining machine advances, manual removal of the anchor rod and the protective net is not needed, a separate net and rod removal process is omitted, the mining and excavation operation efficiency is improved, no high-temperature sparks generated by metal friction occur in the cutting process, the safety hidden danger of gas and coal dust explosion is eliminated, the cutting tooth and the drum are prevented from being impacted and worn by steel materials, the replacement frequency of equipment accessories is reduced, and the problems of the traditional metal support, such as the need for early removal, complicated process, easy generation of sparks during cutting and cutting equipment loss, are solved.

The utility model relates to an adjusting valve based on a redundant sealing structure, which is provided with a valve body, a valve seat is embedded in the valve body between a feeding cavity and a discharging cavity, the upper end face of the valve body is fixedly connected with an upper valve cover, a valve rod is installed in the upper valve cover in a sliding mode, the bottom end of the valve rod is provided with a valve core of an integrated structure, and the valve core is provided with a conical section. The upper edge opening of the inner hole of the valve seat is provided with a chamfer, the chamfer is attached to the inclined face of the conical section to form a main sealing face, and the peripheral face of the valve element below the conical section is attached to the inner side face of the upper end of the inner hole of the valve seat to form an auxiliary sealing face. The outer peripheral surface of the valve core is attached to the inner side surface of the upper end of the inner hole of the valve seat to form the auxiliary sealing surface, when the valve tends to be closed, the auxiliary sealing surface plays a sealing role firstly, and when the valve tends to be opened, the main sealing surface is separated firstly, and then the auxiliary sealing surface is separated. Therefore, high-speed fluid is effectively prevented from impacting and wearing the main sealing surface under the action of the auxiliary sealing surface, the sealing performance of the valve is improved, and the service life of the valve is prolonged.

The invention relates to the technical field of rail transit braking, in particular to a gravity type sanding valve which comprises a main valve body, the main valve body is provided with a sand inlet, a sand channel assembly, a sand outlet head, an air inlet assembly, an air channel assembly and a sand blowing assembly, and the air inlet assembly comprises an air inlet body, a main air inlet connector and a sand outlet tuyere seat. The sand outlet tuyere seat is detachably arranged on the air inlet body, and a sand blowing assembly is arranged on the sand outlet tuyere seat and comprises a mounting seat, a needle rod, an elastic piece and a sand outlet tuyere. The sand blowing assembly is modularly designed, and the needle rod is pressed to be inserted into the air duct of the sand outlet tuyere to dredge the sand blowing assembly, so that the effect of quick and effective cleaning can be achieved, and the sanding efficiency can be greatly improved.