5results about How to "Guaranteed tight" patented technology

This invention relates to the field of shearing machine technology, specifically disclosing a hydraulic swing beam shearing machine for cutting blanks in intelligent commercial catering equipment. The machine includes a shearing frame, a lower blade holder mounted on the shearing frame, and an upper blade holder positioned above the lower blade holder. A lifting device is located behind the lower blade holder and includes a guide outer cylinder fixed to the shearing frame, an inner telescopic cylinder vertically slidable within the guide outer cylinder, and a support spring for providing upward support force. A support platform is fixed to the top of the inner telescopic cylinder. The unloading device includes a material support plate slidably mounted on the support platform in a front-to-back direction, a horizontal tension spring positioned between the support platform and the material support plate, and a stripping baffle fixedly mounted on the support platform and located behind the material support plate. The horizontal tension spring keeps the material support plate away from the lower blade holder. The beneficial effect of this invention is to prevent damage to the sheet metal caused by falling.

The application relates to the table tennis manufacturing technical field, in particular to a process for metal-mold casting a table tennis bat by using a magnesium-lithium alloy material, a forming cavity is arranged in the inside of a mold, a pouring hole is communicated with one side of the forming cavity, a filling assembly is arranged in the inside of the forming cavity, a guide assembly is connected with one side of the filling assembly, a smooth moving assembly is connected with one side of the guide assembly, a water tank, a first water pump and a second water pump are fixedly connected with the outside of the mold, a heat exchanger is fixedly connected with the outside of the water tank, an input pipe is communicated with the input end of the heat exchanger, a third water pump is communicated with the other end of the input pipe, the other end of the third water pump is communicated with the water tank, and an output pipe is communicated with the output end of the heat exchanger; the magnesium-lithium alloy material is poured into the forming cavity in the inside of the mold, the table tennis bat is not limited by the material state, only needs to be directly poured after being melted, the production is very convenient, the integral setting is better in overall stability, the table tennis weight is more suitable for athletes and is not easy to be damaged.

The present application belongs to the technical field of check valve, especially relates to a rocker arm type anti-backflow high-efficiency check valve, which comprises a valve body, the valve body is fixedly connected with a rocker arm frame through a screw, the lower end of the rocker arm frame is rotatably connected with a rocker arm through a pin shaft, the rocker arm is fixedly installed with a valve clack assembly, the front end of the valve clack assembly abuts against a valve seat arranged in the valve body, the valve clack assembly stores a counterweight liquid, a counterweight adjusting assembly is arranged at the rotatable connection position of the pin shaft and the rocker arm, when fluid flows through the check valve in a forward direction, the counterweight liquid stored in the valve clack assembly is transferred into the pin shaft through the counterweight adjusting assembly, the weight of the valve clack assembly is reduced, the resistance to fluid is reduced, and the fluid can flow through the check valve quickly, when the fluid stops flowing through the check valve, the counterweight adjusting assembly transfers the counterweight liquid in the pin shaft back into the valve clack assembly, thereby increasing the weight of the lower end of the valve clack assembly, the valve clack assembly is tightly pressed against the valve seat, and the backflow of fluid is effectively prevented.

This application relates to a mold and casting process for casting end caps of shell-type hydraulic valve bodies, belonging to the technical field of casting processing. The mold includes a mold body with a cavity formed within it. A runner sand core is disposed within the cavity and fixedly connected to the mold body. A gating port is provided at the bottom of the mold body and communicates with the cavity. The bottom gating assembly includes a sprue base plate and a vertical gating pipe. A horizontal runner is provided within the sprue base plate, with its length direction along the horizontal direction. The vertical gating pipe is vertically positioned above the sprue base plate, with its lower end connected to the sprue base plate and communicating with the horizontal runner. The mold body is fixed to the sprue base plate, and the gating port communicates with the horizontal runner. This application reduces the occurrence of splashing, turbulence, and air entrapment of molten metal within the cavity, thereby reducing the generation of secondary oxidation inclusions and porosity defects inside the casting, which improves the final casting quality.

This invention discloses a gate control system and method for a split-type compression station. The control system includes a gate installed at the outlet of a compression chamber for closing or opening the outlet; a pusher movably installed inside the compression chamber for compressing waste within the chamber; a pressure sensor installed on the gate's oil circuit for real-time monitoring of the gate's pressure and uploading the data to the control system; and a displacement sensor installed on the pusher for real-time monitoring of the pusher's displacement and uploading the data to the control system. The control system receives and processes the data uploaded by the pressure and displacement sensors and controls the actions of the pusher and gate according to preset control parameters. This invention effectively prevents waste rebound, reduces gate closing resistance, makes gate closing easier, reduces the number of forced gate closures, and effectively improves system operating efficiency.