Abstract: A sand spreader includes a sand storage chamber. Two sand discharge ports are disposed below the sand storage chamber, and are an upper-layer staggered sand discharge port and a lower-layer sand pressing plate sand discharge port, respectively. The upper-layer staggered sand discharge port comprises a left side sand discharge plate and a right side sand discharge plate configured to intersect with each other. Horizontal staggered ports are formed in a position at the bottom of the two sand discharge plates, and vertical spacing between the staggered ports is adjustable. Also comprised is the lower-layer sand pressing plate sand discharge port, including left and right side sand pressing plates. Vertical sand discharge ports are disposed between the sand pressing plates on the two sides, and the width of the vertical sand discharge ports is adjustable, so as to further facilitate control over the amount of discharged sand.

Abstract: A sand spreader includes a sand storage chamber. Two sand discharge ports are disposed below the sand storage chamber, and are an upper-layer staggered sand discharge port and a lower-layer sand pressing plate sand discharge port, respectively. The upper-layer staggered sand discharge port comprises a left side sand discharge plate and a right side sand discharge plate configured to intersect with each other. Horizontal staggered ports are formed in a position at the bottom of the two sand discharge plates, and vertical spacing between the staggered ports is adjustable. Also comprised is the lower-layer sand pressing plate sand discharge port, including left and right side sand pressing plates. Vertical sand discharge ports are disposed between the sand pressing plates on the two sides, and the width of the vertical sand discharge ports is adjustable, so as to further facilitate control over the amount of discharged sand.

Abstract: A bone-meat separator includes a chassis, a driving mechanism, a transmission shaft, a spiral shaft, a feed hopper, a pressurization portion and a bone-meat separation portion. In this design, a separation spiral shaft portion is a conical spiral shaft; the bone-meat separation portion is a conical component coaxially sheathed on the periphery of the separation spiral shaft portion, and an inner wall of the bone-meat separation portion is in clearance fit with an outer wall of the separation spiral shaft portion. With regard to the bone-meat separator, since the inner wall of the bone-meat separation portion and the outer wall of the spiral shaft are always in a stable clearance fit state, the service life is improved.

Abstract: A bone-meat separator includes a chassis, a driving mechanism, a transmission shaft, a spiral shaft, a feed hopper, a pressurization portion and a bone-meat separation portion. In this design, a separation spiral shaft portion is a conical spiral shaft; the bone-meat separation portion is a conical component coaxially sheathed on the periphery of the separation spiral shaft portion, and an inner wall of the bone-meat separation portion is in clearance fit with an outer wall of the separation spiral shaft portion. With regard to the bone-meat separator, since the inner wall of the bone-meat separation portion and the outer wall of the spiral shaft are always in a stable clearance fit state, the service life is improved.