7results about How to "Short structure length" patented technology

The invention provides an intensive light-weight gate valve structure and a gate valve, and belongs to the technical field of oil delivery control equipment.The intensive light-weight gate valve structure comprises a valve body, a valve deck, a valve plate, a valve seat, a valve rod and a tail rod, the valve body comprises a valve plate channel and a fluid channel, and the valve plate channel and the fluid channel are perpendicular to each other and communicate with each other; an upper valve cover and a lower valve cover of the valve cover are used for sealing the top end and the bottom end of the valve plate channel; the interior of the valve plate channel serves as a valve cavity, the cross section of the valve cavity is in a long-strip-hole shape, the valve plate is located in the valve cavity, the valve seat is fixed in the valve body, one end of the valve seat is communicated with the fluid channel, and the other end of the valve seat extends into the valve cavity and is communicated with the valve cavity. A self-tightening valve cover sealing assembly used for sealing is arranged at the joint of the valve body and the valve cover, and a valve seat sealing assembly used for sealing is arranged at the joint of the valve seat and the valve body. Under the condition that the gate valve meets the rated working pressure of 175 MPa and 206 MPa, the overall weight of the gate valve is greatly reduced, and meanwhile on-site safe operation and rapid installation are facilitated.

The present invention relates to an F4.5mm compact infrared lens, which is characterized by comprising a lens barrel, wherein a negative crescent lens A, a positive crescent lens B, and a biconvex lens C are sequentially arranged in the lens barrel along the incident direction of light from left to right, the air interval between the negative crescent lens A and the positive crescent lens B is 14.61mm, the air interval between the positive crescent lens B and the biconvex lens C is 8.85mm, and the air interval between the biconvex lens C and the image plane is 8.21mm. The lens has a compact structure, a short lens structure length, is easy to carry, and has a high transmittance. In the optical design, the optical focal length is reasonably allocated to achieve the optical athermal characteristics of temperature self-adaptation, and can be adapted to a long-wave infrared non-cooling 384×288, 17μm detector to perform real-time recording and monitoring tasks. The production cost is low and it is suitable for large-scale production.

The invention relates to a packaging apparatus for small items, to the use of a packaging apparatus and to a method for producing a connected blister pack. The packaging apparatus comprises a packaging material guide for providing a web of formed packaging material suitable for containing small items, a longitudinal joining device arranged downstream of the packaging material guide, and a transverse joining device arranged downstream of the packaging material guide, which joins the web of formed packaging material at predetermined intervals at a transverse joining region transversely to the conveying direction, wherein the transverse joining device comprises two joining tools having a plurality of embossing tools which can be moved individually transversely to the conveying direction during the packaging operation and embossing tool stop regions which interact such that a palpable embossing can be formed in the transverse joining region by means of the embossing tools.

This invention relates to a conductive device for a wire EDM machine tool, comprising a rotating shaft, a guide ring, a bearing, a ring cover, a stationary shaft, a spring, an input rod, a receiving rod, and a wire. The bearing is installed in the inner hole of the rotating shaft, the guide ring is fitted onto the outside of the rotating shaft, and the ring cover is connected to one end of the rotating shaft. The front part of the stationary shaft is located in the inner hole of the bearing within the rotating shaft. The end of the stationary shaft protruding from the rotating shaft is the connection end for connecting to the wire EDM machine tool. A groove is provided inside the stationary shaft, and the input rod is positioned in the groove. The spring is located inside the groove of the stationary shaft and is pressed against by the end face of one end of the input rod. The outer side of the receiving rod is fixed to the middle of the ring cover, and the inner side of the receiving rod extends into the groove and contacts the input rod. The wire extends from the outside into the groove and connects to the input rod. This invention has a small overall size that does not affect the table travel, high coaxiality, and small radial runout, effectively reducing vibration of the electro-friction contact parts, reducing discharge loss caused by radial runout, and ensuring machining accuracy.

The invention relates to a control module (22) for a multi-plate clutch (18), having a force transmission element (66) for transmitting a control force from a control mechanism (20) to a plate package (24) of the multi-plate clutch (18) and a spring mechanism (84) for generating a return force acting on the force transmission element (66). The spring mechanism (84) is arranged without play at the force transmission element (66). Furthermore, the invention relates to a multi-plate clutch assembly having such a control module (22).

A robot for automatically crawling and polishing the inner wall of a circular tube belongs to the technical field of descaling of a spraying pipe line. The device includes a shell, a main drive module, a drive base, a polishing module and a crawling module. The shell includes a left shell and a right shell, and the drive base includes a first drive base and a second drive base. The main drive module, the crawling module and a plurality of support wheels are installed on the outer end face of the drive base. The plurality of polishing modules are evenly distributed circumferentially between the outer end face of the right shell and the end face opposite to the second drive base. The crawling module drives the polishing device to perform linear motion along the outer wall of the pipe to be polished, and the main drive module drives the polishing module to perform rotational motion along the circumferential direction of the inner wall of the pipe through the gear transmission drive shell. The device has a wide range of applications, and the disassembly and assembly and polishing of the grinder can be completed by a single person. In addition, a detection device is arranged on the outer end face of the drive base, and the detection of pipe wall thickness, cracks and corrosion conditions can be realized while polishing the pipe, so that one machine can be used for multiple purposes.

An automatic crawling and grinding device for the outer wall of a circular pipe belongs to the technical field of descaling of a spraying pipe line. The device includes a shell, a main driving module, a driving base, a grinding module and a crawling module. The pipe to be polished passes through the driving base and the shell along the axial direction; the main driving module, the crawling module and the supporting wheel are installed on the outer end face of the driving base, the grinding module is installed on the inner wall of the right shell and close to the left shell side, the crawling module drives the grinding device to make a linear motion along the outer wall of the pipe, the main driving module drives the shell through the gear transmission to drive the grinding module to make a rotational motion along the circumferential direction of the pipe, and the transmission gear ring drives the grinding disc installed on the grinding module to make a rotational motion along the radial direction of the pipe through the gear transmission. The device has a wide range of applications, and the disassembly and assembly and grinding work of the grinder can be completed by a single person, and a detection device is arranged on the outer end face of the shell, which can realize the detection of pipe wall thickness, cracks and corrosion conditions while polishing the pipe, so that one machine can be used for multiple purposes.