7results about How to "Block the flow" patented technology

The utility model discloses a feeding device of a nursing bed, which comprises a dining plate matched with the nursing bed for use, a supporting assembly is arranged at the bottom of the dining plate, and the supporting assembly is detachably connected with a guardrail of the nursing bed; the dining plate is provided with a limiting assembly for fixing a meal box, the limiting assembly is detachably installed on the dining plate, the whole feeding device occupies a small space on the left side and the right side of the nursing bed through the supporting assembly, nursing operation of medical staff is facilitated, the feeding device is convenient to disassemble and assemble, and the meal box of different sizes can be fixed through the limiting assembly; the lunch box can be conveniently put in and taken out, the situation that the lunch box shakes and topples over in the feeding process of the patient is effectively avoided, and therefore the situations of food scattering and the like are reduced.

This invention belongs to the field of underground mining, specifically relating to a method for recovering high-grade residual ore under loose rock cover. The method includes the following steps: S1: Constructing a grouting tunnel in the upper middle section of the residual ore pile at the bottom of the stope, adjacent to the intact ore body of a collapsed stope. This grouting tunnel serves as the construction site for grouting in the collapsed area. This method for recovering high-grade residual ore under loose rock cover effectively addresses the technical problem of ore recovery being impossible due to the collapse of the upper rock mass by constructing a concrete-loose rock mass hybrid structure through grouting. Through theoretical calculations, the strength and thickness of the hybrid structure are ensured to impede rock flow, allowing the ore recovery process to break free from dependence on the stability of the rock mass itself. This enables direct recovery of high-grade ore under loose cover conditions, effectively addressing the recovery limitations faced by traditional methods in severely collapsed stopes.

This utility model discloses an air filtration and purification device for goat milk powder production, including a support leg, a fixed shell fixedly connected to the support leg, a sliding frame fixedly connected to the fixed shell, and high-efficiency filters evenly distributed within the sliding frame. The fixed shell has an exhaust port, an exhaust fan fixedly connected to the exhaust port, and an air inlet. A rotating sleeve is rotatably connected to the fixed shell, and a rotating disk is rotatably connected to the rotating sleeve. A controller is fixedly connected to the rotating sleeve. A circumferentially evenly distributed connecting pipe is fixedly connected and communicated with the rotating sleeve, and the connecting pipes are fixedly connected and communicated with each other by the fixed sleeve. A gear drives a gear ring to rotate, which in turn drives the rotating sleeve to rotate 60°, thereby connecting a new primary filter to the air inlet. This allows for rapid replacement of the primary filter, preventing excessive accumulation of impurities on the primary filter, which would reduce its filtration efficiency and obstruct airflow.

The utility model discloses a sand barrier structure for mobile sand land management relates to sand barrier technical field, including sand layer, the sand layer is laid with cover layer on sand blocking layer, and the cover layer is laid with pressure cover layer on sand blocking layer, a plurality of support columns, a plurality of support columns are arranged at intervals, and the bottom end of every support column is inserted into sand surface layer and is inserted into sand surface layer and is inserted into sand surface layer and is inserted into sand surface layer and is inserted into sand surface layer and is inserted into sand surface layer and is inserted into sand surface layer and is inserted into sand surface layer and is inserted into sand surface layer and is inserted into sand surface layer and is inserted into sand surface layer and is inserted into sand surface layer and is inserted into sand surface layer and is inserted into sand surface layer and is inserted into sand surface layer and is inserted into sand surface layer and is inserted into sand surface layer and is inserted into sand surface layer and is inserted into sand surface layer and is inserted into sand surface layer and is inserted into sand surface layer and is inserted into sand surface layer and is inserted into sand surface layer and is inserted into sand surface layer and is inserted into sand surface layer and is inserted into sand surface layer and is inserted into sand surface layer and is inserted into sand surface layer and is inserted into sand surface layer and is inserted into sand surface layer and is inserted into sand surface layer and is inserted into sand surface layer and is inserted into sand surface layer and is inserted into sand surface layer and is inserted into sand surface layer and is inserted into sand surface layer and is inserted into sand surface layer and is inserted into sand surface layer and is inserted into sand surface layer and is inserted into sand surface

The utility model relates to the technical field of grain planting, in particular to a grain planting seedling raising frame which comprises a seedling raising base and a water tank, a seedling raising groove is formed in the seedling raising base, a water through hole is formed in the seedling raising base, and the water through hole is communicated with fluid in the water tank. The position, close to the top, of the side edge of the seedling raising groove is communicated with the water through hole through a water supply hole, and a blocking plate is slidably installed on the side edge of the water supply hole; the seedling raising device has the advantages that the blocking plate is slidably arranged on the side edge of the water supply hole, the abutting sliding plate is slidably arranged on the sliding plate in a penetrating mode, the blocking plate is in driving connection with the abutting sliding plate, and when the water surface in the seedling raising groove reaches the height of the abutting sliding plate, water in the seedling raising groove can push the abutting sliding plate; and thus, the abutting sliding plate drives the blocking plate to slide, the water supply hole is blocked, water in the water through hole is prevented from continuously flowing to the seedling culture groove, and the device can automatically and accurately control the height of the water surface in the seedling culture groove.

The utility model relates to a quick -setting cement production equipment, concretely is a concrete mixing box of preventing quick -setting cement block, to solve the technical problem that cement slurry is easy to block the support end of stirring shaft and lead to the jamming of stirring shaft in the process of discharging that quick -setting cement, sand and gravel, mixed material etc. are mixed and output in the existing concrete mixing box, the utility model discloses a box body, stirring shaft and sealing device, sealing device includes wear -resistant bottom plate, spacer ring, inner sealing plate and seal ring, wear -resistant bottom plate, spacer ring, inner sealing plate are connected in turn and are pressed tightly in the inside of box body front end board, wear -resistant bottom plate is set in the outside of stirring shaft medium diameter section, spacer ring and inner sealing plate all are set in the outside of stirring shaft large diameter section, and wear -resistant bottom plate, inner sealing plate form clearance seal between medium diameter section and large diameter section respectively, inner sealing plate, wear -resistant bottom plate, large diameter section and spacer ring form a passageway, and seal ring sets up in the passageway, and its inner periphery and large diameter section between seal solid link, and one side is pressed tightly on wear -resistant bottom plate.