10results about How to "Prevent falling back" patented technology

A novel through-wall pipe for building water supply and drainage comprises a middle pipeline, threaded insertion rings, arc-shaped rotating plates, positioning insertion rods, fixing rods, sliding clamping plates and rotating shafts, the middle pipeline is provided with middle pipeline protruding rings and pipeline internal thread grooves, the pipeline internal thread grooves are symmetrically formed in the two ends of the middle pipeline, and the threaded insertion rings are matched with the pipeline internal thread grooves; the threaded insertion rings are inserted into the pipeline internal threaded grooves and rotate in the pipeline internal threaded grooves, the middle pipeline is provided with rectangular receding holes, the two sets of rectangular receding holes are symmetrically distributed in the two ends of the middle pipeline, and the threaded insertion rings are provided with threaded insertion ring side plates and rectangular clamping plate insertion holes. A plurality of rectangular clamping plate insertion holes are evenly distributed in the axial side of the threaded insertion ring side plate, the rectangular clamping plate insertion holes are opposite to the rectangular receding holes inside and outside, the arc-shaped rotating plates are matched with the rectangular clamping plate insertion holes, the arc-shaped rotating plates are inserted into the rectangular clamping plate insertion holes, and the arc-shaped rotating plates are provided with second rotating shaft holes.

The utility model provides a fractionating tower top diversion anti-corrosion device which is arranged at the top end of a fractionating tower body and comprises a diversion body and a connector, a liquid collecting tank and a supporting net are arranged in the diversion body, the supporting net is arranged above the liquid collecting tank, the supporting net is composed of a plurality of net layers, ceramic fibers are arranged between the net layers of the supporting net, and the connector is connected with the diversion body. A through hole communicated with the outside is formed in the bottom of the liquid collecting groove and connected with a liquid guide pipe, a drain valve is arranged in the liquid guide pipe, and a plurality of ammonia water injection openings are formed in the portion, above the supporting net, of the flow guide body. Therefore, the device has the advantages of collecting liquid acid condensed at the top of the tower due to low temperature, timely leading out the liquid acid at the top of the tower, preventing the inner wall of the fractionating tower from being corroded, and providing guarantee for the stability of a system in the fractionating tower.

The utility model discloses a connector which comprises a first shell and a second shell which can be assembled together, and in the state that the first shell and the second shell are assembled together, a columnar outer conductor of the first shell penetrates through a through hole of the second shell and extends into a second shell body. The first housing includes at least one recess formed concavely on an outer peripheral surface of the columnar outer conductor, and the second housing includes at least one elastic buckle formed at a perimeter of the through hole, the elastic buckle extending obliquely radially inward inside a second housing body, and the elastic buckle is attached to the first housing and the second housing in a state in which the first housing and the second housing are fitted together. The elastic buckles are clamped in the corresponding concave parts, and the front flat surface of the first shell main body and the rear flat surface of the second shell main body are in contact with each other. By means of the arrangement mode, the retention force between the first shell and the second shell can be improved, and the first shell is prevented from retreating and falling off after assembly.

The utility model discloses a combined type pole-mounted vacuum circuit breaker, and relates to the technical field of vacuum circuit breakers. Comprising a mechanism box, the outer wall of the top of the mechanism box is fixedly connected with an arc extinguish chamber, the outer wall of the arc extinguish chamber is fixedly connected with a current transformer, the switch device comprises a positioning frame, the inner wall of the positioning frame is rotatably connected with a wheel shaft, the outer wall of the wheel shaft is rotatably connected with an ejector rod, and the ejector rod is fixedly connected with the mechanism box. A knife switch is slidably connected to the outer wall of the top of the ejector rod, a connecting device is rotatably connected to the outer wall of the knife switch, and rotating frames are fixedly connected to the two ends of the wheel shaft. Through the arrangement of the connecting device and the arrangement of a compression spring and a limiting rod, the knife switch rotates around the fixing frame, it is ensured that circuit connection is stable and reliable, and meanwhile the installation process is simplified; the installation process of the knife switch is simplified, the installation time of the knife switch is saved, and stable circuit connection is ensured.

The utility model provides paper drying equipment and aims to solve the technical problem that part of paper is not dried due to the fact that water drops fall back to the paper. The drying equipment comprises a box body, two sides of the bottom of the box body are respectively provided with an air inlet, and the top of the box body is provided with an air outlet; the two ends of the bottom frame are rotationally arranged in the box body through rotating shafts respectively; the fixing frame can cover the bottom frame; at least one magnet is correspondingly arranged on each of the bottom frame and the fixing frame; the motor is arranged on the box body, an output shaft of the motor is in power connection with a rotating shaft at one end of the bottom frame, and the motor is used for driving the bottom frame to rotate by 90 degrees; the bottom frame and the fixing frame are each of a rectangular frame structure. According to the drying equipment, the bottom frame is driven by the motor to rotate by 90 degrees, so that in the paper drying process, paper is in a vertical state, the two surfaces of the paper make uniform contact with warm air, and meanwhile water drops can be prevented from falling back to the paper.

The invention relates to the technical field of vacuum bag cleaning, and discloses a cleaning device for vacuum bag conveying, which comprises a rewinding machine and a rewinding frame, a continuous cleaning assembly is arranged between the rewinding machine and the rewinding frame, the continuous cleaning assembly comprises a cleaning shell, a cleaning screw rod and a driving part, the cleaning shell is fixedly connected between the rewinding machine and the rewinding frame, and the cleaning screw rod is fixedly connected between the cleaning shell and the rewinding frame. The side, close to the rewinding machine, of the cleaning shell is arranged to be trapezoid, when a vacuum bag passes through the cleaning shell, under the trapezoid structure, small dust is blown away by airflow through the guiding effect of an inclined face, primary cleaning of the surface of the vacuum bag is achieved, meanwhile, the cleaning lead screws located in the vertical direction rotate to conduct secondary cleaning on the vacuum bag, and in the rotating process of the cleaning lead screws, the cleaning lead screws can clean the surface of the vacuum bag. The contact area between the dust removal device and the vacuum bag is not large and continuous, the contact mode can effectively remove impurities and cannot damage the vacuum bag, dust and the impurities are easily brought to the two sides of the vacuum bag under the rotation effect, and impurity residues are effectively avoided.

The utility model discloses a kind of electromagnetic valve processing material disc, including disc body, for carrying and positioning electromagnetic valve parts;Base, it is oppositely arranged with disc body;Telescopic load bar, two ends are connected disc body and base respectively, for the main support of disc body in height direction;And at least three groups of telescopic rod, around load bar and be evenly distributed in circumference, the two ends of each telescopic rod are connected to disc body and base respectively, to form the auxiliary support of disc body and allow disc body to be lifted relative to base;Wherein, load bar and telescopic rod jointly constitute height-adjustable support mechanism, so that the carrying height of disc body can be positioned and kept above base.The utility model sets up the electromagnetic valve processing material disc, provides adjustable height support by the combination design of load bar and telescopic rod, so that operator can adjust disc body height according to own demand, avoid frequent bending or lifting arm due to fixed height material disc, reduce labor intensity, improve work efficiency.

This invention provides an automatic stacking and storage device for battery cell casings: it includes a support frame and a storage component and a top component mounted on the support frame; the storage component includes two symmetrically arranged storage plates, each with a slot extending along its height and penetrating its upper and lower ends on one side wall facing each other, forming a receiving space between the two slots for stacking battery cell casings; the lower end of each storage plate has a radially extending through groove, within which a stop component is connected, the supporting end of which can extend or retract from the through groove; the top component pushes the battery cell casings upward into the receiving space of the storage component, and the stop component supports the bottom of the lowest battery cell casing within the receiving space to prevent it from falling back. This invention can automatically stack and store battery cell casings in the receiving space without manual operation, saving time and effort while being highly efficient.

The utility model relates to road maintenance technical field, concretely is a kind of paint spraying device for road maintenance, including loading plate, and the first end of loading plate is fixed with distribution pipe, and distribution pipe bottom end is spaced apart and is connected and is installed with several groups of spray material pipe;Loading plate tail end is installed with shunt pipe, and shunt pipe bottom end is parallel and is connected and is installed with several groups of blowing pipe;Loading plate bottom end is installed between distribution pipe and shunt pipe and is installed with baffle, and baffle bottom end is fixed with the brush body of road surface secondary cleaning;Baffle is provided with the power part of driving shunt pipe close to or away from baffle.The utility model is provided with baffle, brush body and blowing pipe etc., can clean road surface in advance, improve the quality of coating after paint spraying, and baffle and brush body insulate spray material pipe and blowing pipe, effectively prevent the particle impurity blown up to fall in the area to be sprayed or directly fall on coating surface again;In addition, during the movement of brush body, road surface can also be secondary cleaned, and the cleaning effect of road surface is improved.

The present invention belongs to the technical field of compressors, and more specifically, it relates to a crankshaft, a variable frequency compressor and a refrigeration device. Among them, the crankshaft includes a main shaft, a crankshaft and a crank. The crankshaft is installed on one end of the main shaft through the crank. The main shaft is provided with an oil suction cavity and an oil distribution channel extending to penetrate the crankshaft. The outer wall surface of the main shaft is provided with a first spiral oil groove and a second spiral oil groove. One end of the first and second spiral oil grooves is connected to the oil suction cavity. The main shaft is also provided with a first oil hole and a second oil hole. The first and second spiral oil grooves are connected to the oil distribution channel through the first oil hole and the second oil hole respectively. The first and second spiral oil grooves rotate in opposite directions to ensure that lubricating oil can be supplied when the crankshaft rotates forward and backward. The first oil hole and the second oil hole are arranged at intervals and staggered with each other along the radial direction of the main shaft. The amount of lubricating oil leaking through the first / second oil hole and falling back is reduced, the low-speed oiling of the crankshaft is more guaranteed, and the lubricating oil supply is more stable and reliable.