49results about How to "Labor-saving processing" patented technology

The utility model provides a bar-shaped embedding chair which comprises chair legs, a seat plate and a chair backrest, wherein the seat plate and the chair backrest comprise plate strips and connecting strips; the chair legs comprise front chair legs, rear chair legs, transverse brackets and backrest brackets; embedding slots A or embedding strips are arranged at the internal sides of the upper parts of the transverse brackets, the backrest brackets and the front chair legs; an embedding slot B is arranged at each of two sides of each plate strip; the embedding slots A and the embedding slotsB are matched with the connecting strip; the embedding strips are matched with the embedding slots B; fixed holes are arranged respectively in the chair legs, the plate strips and the connecting strips; and fixed rods are arranged in the fixed holes. The seat plate and the chair backrest are manufactured into the split plate strips and connecting strips; all the plate strips and the chair legs are connected by all the connecting strips so as to splice the whole chair; and subsequently the chair is fixedly connected with the fixed rods. The plate strips and the connecting strips and / or the chair legs are connected with one another in an embedded way, the chair is convenient to install, is firm, stable and durable for use, all strips can be disassembled when the chair is not in use, furthermore, the chair is extremely easy for manual operation and has small volume.

The invention provides a self-priming ejector pump movable sheet check valve, comprising a motor, wherein the motor is connected with a pump body, the pump body comprises a water inlet and a water outlet. the check valve is characterized in that the water inlet is connected with a valve seat, a valve hole is arranged in the valve seat, the valve hole is connected with the water inlet pipe, the valve seat is provided with a round pit, the inside of the pit is provided with a rubber sheet seat, the rubber sheet seat is connected with a rubber valve sheet, and the rubber valve sheet is matched with the valve hole of the valve seat. Compared with the prior art, the self-priming ejector pump movable sheet check valve has the following advantages that: firstly, a shallow pit in the valve seat which is connected with the water inlet is provided with the rubber sheet seat, which is favorable for assembling and determining the position of the valve sheet and improving sealing performance; secondly, the sheet seat made by rubber is connected with the valve sheet, which has the advantages of good integral formation, convenient installation, no rust of rubber materials and long service life; thirdly, the rubber is elastic, thereby having reliable sealing for the valve hole fitting and stable working; fourthly, the rubber sheet seat is connected flexibly with the valve sheet, thereby having small resistance in the process of entering water, easily opening and closing and less consumption; fifthly, the self-priming ejector pump movable sheet check valve has the advantages of simple construction, labor conservation of processing, convenient installation, easy maintenance and easy replacement; sixthly, the check valve has wide adaptability; at last, the check valve also has the advantages of cost economization and low cost.

The invention discloses a lifting stool with a storage box. The lifting stool comprises a sitting plate, wherein support feet are arranged below the sitting plate; the support feet consist of upper feet and lower feet; the upper feet and the lower feet can be adjusted in a lifting manner; the upper feet are connected with an upper box frame or an upper box; the upper box frame is connected with the upper box; the upper box comprises four box plates; the upper box is an upper box which is communicated up and down; the sitting plate is a moveable sitting plate which is arranged on the upper boxframe; a rotating pin or a chain is arranged between one side of the sitting plate and the upper box frame; the other side of the sitting plate is opened or closed along with the rotating pin or the chain; a lower box is arranged below the upper box; the lower box comprises four box plates; a lower box bottom plate is arranged below the four box plates; the upper box and the lower box are of different sizes; the lower box is sleeved by the upper box or the upper box is sleeved by the lower box; the upper box and the lower box form a whole book shelf; the upper part of the lower box is through;the bottom plate of the lower box or the lower box is connected with the lower feet. When the lower feet and the upper feet are lifted up and down, the lower box and the upper box are adjusted alongwith the lower feet and the upper feet, and the capacity of the box can be also changed.