42results about How to "Easy to connect with each other" patented technology

The invention relates to a blowdown device for aquaculture. The blowdown device comprises a device body, wherein the device body is composed of a cylinder and a cone-shaped body arranged below the cylinder; the cylinder and the cone-shaped body are integrally arranged; a cavity is formed in the cylinder and the cone-shaped body; a plurality of water outlet through holes are formed in the side wall of the cylinder; an upright post is arranged below the cone-shaped body; the lower end of the upright post is in a shape of a needle tip; a plurality of barbs are formed on the side wall of the upright post; openings of the barbs are upward, and a filter screen is arranged in the device body. The blowdown device has the advantage of simple structure; when the blowdown device is used, only the upright post end is inserted into sludge, and then a blowdown pipe is inserted into the cavity, so that blowdown is realized; thus, the blowdown device is difficult to loosen when in use, and a handle is arranged, so that the blowdown device is convenient to lift after being used; in addition, a connecting joint is arranged, so that the blowdown device can be mutually butted with the blowdown pipe preferably.

The invention discloses a track type transfer vehicle for nursery stock to transfer with soil. The transfer vehicle includes a multi-sectional sliding rails and a transport tank, the sliding rails areclamped to each other mutually, taper rods are fixedly connected with the lower surfaces of the sliding rails, rollers are connected with the four corners of the lower surface of the transport tank separately in a rotating mode, the rollers are connected in the sliding rails in a rolling mode, and arc-shaped boards symmetrically arranged are connected with the surface of a base board of the transport tank in a sliding mode. According to the transfer vehicle, nursery stocks are prevented from inclination and damage in the transport process, the transport tank can be further prevented from being pushed manually, and the manpower and time can be saved.

The present invention relates to a comprehensive recovery process for a rare earth and strontium intergrowth multi-metal ore. The mineral mainly comprises rare earth fluoro-carbonate and at least one selected from a sulfate of the strontium, a carbonate of the strontium or a strontium oxide. According to the present invention, at least one method selected from gravity separation, magnetic separation and flotation separation is adopted to carry out concurrent screening for the rare earth and the strontium in the rare earth and strontium intergrowth multi-metal ore to obtain the bulk concentrate containing the rare earth and the strontium; then the bulk concentrate is subjected to oxidizing roasting for 1-8 hours at a temperature of 350-700 DEG C in air atmosphere or oxygen atmosphere; the resulting calcine is subjected to leaching for 1.0-5.0 hours by a sulfuric acid solution with the hydrogen ion concentration of 0.5-12.0 mol / L, wherein the leaching temperature is 20-100 DEG C, the leaching liquid-solid ratio (by weight) is 1-5:1. The comprehensive recovery process of the present invention has the following advantages that: the rare earth is almost entirely leached in the solution; the strontium sulfate (SrSO4) is remained in the residue; the strontium concentrate with the grade of about 70% is obtained, and can be sold directly or deep processed; with the comprehensive recovery process of the present invention, the multi-metal ore containing the rare earth and the strontium can be effectively separated.

The invention relates to the technical field of sockets, in particular to a combined socket with a retractable socket surface. The combined socket comprises a socket body, fixing plates are arranged at the outer portions of the two sides of the socket body, a base is fixed between the bottom portions of the fixing plates, the socket body is arranged at the top of the base, adjusting mechanisms arearranged at the connections of the socket body and the fixing plates, jack grooves and mounting grooves are respectively arranged at the bottom portions of two sides, adjacent to the adjusting mechanisms, of the socket body, rotating grooves are respectively arranged at the top of one ends, far away from the base, of the fixing plates, fixing shafts are arranged between the rotating grooves, baffles are respectively rotationally arranged in the fixing shafts, a first limiting plate and a second limiting plate are respectively arranged on the opposite sides of the baffles, connecting through holes are respectively arranged at two ends of the first limiting plate, necks are respectively arranged at two ends of one sides of the fixing plates, and buckles are respectively installed at two ends of one sides, opposite to the necks, of the fixing plates. The combined socket is convenient to adjust the socket and can retract the socket surface so as to improve the service life of the socket.