58results about How to "Avoid mixed flow" patented technology

The invention discloses an automatic sand-shakeout and ring-stripping device for piston rings. The automatic sand-shakeout and ring-stripping device for the piston rings comprises a sand cleaning mechanism, wherein the sand cleaning mechanism comprises a sand loosing device used for loosening the molding sand at the riser end of a casting, a sand suction device for sucking sand after loosening and a sand box positioning device; the sand-shakeout and ring-stripping mechanism is arranged on one side of the sand cleaning mechanism and the sand-shakeout and ring-stripping mechanism comprises a sand-shakeout manipulator, a ring-stripping manipulator, a ring-stripping discharge head, a sand-shakeout air-hammer and a sand ring sieving device, wherein the sand-shakeout manipulator is used to grab and carry sand boxes; the ring-stripping discharge head is fixed on the sand-shakeout manipulator and is used for selectively extruding the piston ring on the casting; the ring-stripping manipulator is arranged on the sand-shakeout manipulator and can move along a vertical direction relative to the sand-shakeout manipulator; the ring-stripping manipulator is used to grab a casting riser that passes through a bore through a riser; the sand-shakeout air-hammer is arranged in a sand-shakeout position and is used for selectively impacting sand box; the sand sieving device is arranged below the sand-shakeout air-hammer and is used for receiving and separating molding sand and piston rings. The automatic sand-shakeout and ring-stripping device for the piston ring can realize automatic sand-shakeout and ring-stripping, the operation efficiency is high, and the operation strength is low.

The invention discloses a novel heat exchanger core, and belongs to the technical field of mechanical design. The novel heat exchanger core comprises etching plates, forming plates and partition plates; heat exchange runners are etched on the etching plates, and each heat exchange runner is composed of a direct runner and an oval runner which are alternatively arranged; the direct runners and the oval runners are communicated; the long axes of the oval runners and the central axes, in the liquid flowing direction, of the direct runners are located on the same straight line; the n etching plates and the m forming plates are alternatively arranged, wherein n is larger than or equal to 1, m is larger than or equal to 1, and m and n are both positive integers; the position between the etching faces of adjacent etching plates and the forming plates, the position between the two adjacent forming plates and the position between the etching faces of the two adjacent etching plates are each provided with one partition plate; according to the heat exchanger core, the characteristics of a micro-channel heat exchanger and a plate type heat exchanger are integrated, the use condition that the working medium cleaning degree is not high is met, and the novel heat exchanger core can be particularly suitable for the cooling working procedure of natural gas of an offshore work platform.

The invention discloses a horizontal anaerobic reactor which consists of a feed hole (1), a reactor main body (2), a gas collection chamber (3), a dreg settling zone (4), a dreg collection hopper (6) and an overflow groove (7). The reactor is characterized in that the reactor main body (2) has a cylindrical tubular structure, the rectangular gas collection chamber (3) is arranged at the top of the reactor main body (2), a biological fuel gas outlet (9) is arranged above the gas collection chamber (3), the semicircular dreg settling zone (4) is arranged at the bottom of the reactor main body (2), the feed hole (1) is arranged at one end of the reactor main body (2), the overflow groove (7) is arranged at the other end of the reactor main body (2), a discharge hole (11) is arranged on the overflow groove (7), the end of the dreg settling zone (4) is connected with the dreg collection hopper (6), and a sludge outlet (12) is arranged under the dreg collection hopper (6). The reactor can solve the problems of mixing of dreg floating and settled dregs and mixing cracking system and material system in the course of the anaerobic fermentation of high solid materials, and is characterized by energy saving, high efficiency and automatic control.

The invention discloses a design method for a split-flow cold end heat exchanger of a gas-coupled pulse tube refrigerator, which comprises an upper heat exchanger shell, a lower heat exchanger shell, a rectangular slit body, a through hole, a laminar flow element, a conical Slit body, T-shaped through hole. Laminar flow elements are tightly filled in the cylindrical gap between the upper heat exchanger shell and the lower heat exchanger shell, and the upper and lower heat exchanger shells are connected by welding to realize the first stage cold storage, the first stage pulse tube and the second stage Connection of secondary cold storage. While maintaining the high-efficiency heat exchange advantages of the traditional heat exchanger, the invention realizes the natural diversion of the gas working medium, suppresses the turbulent disturbance of the gas in the heat exchange channel, and ensures the uniformity of the gas flow. The invention will significantly improve the overall performance of the refrigerator, and has very positive significance for realizing the compactness and practicality of the pulse tube refrigerator.