40results about How to "Easy to drill out" patented technology

The invention discloses an environment-friendly pet runway. The runway includes insertion boards, through holes, a moving plate, a retractable rod, a linking shaft and a first winding turntable; the through holes are formed in the middles of the insertion boards, the retractable rod is installed on the top of the moving plate, and a first winding roller is installed in the middle of the linking shaft. The runway is scientific and reasonable in structure and safe and convenient to use; through arrangement of splicing plates, the splicing plates are spliced into the runway during usage and can be dismantled after use, convenience is provided for storage and movement, the runway can be conveyed to different places for activities, and the practicability is improved; through arrangement of theinsertion boards, multiple runway bodies can be separated for running of multiple pets at the same time, and the pets are prevented from running into the adjacent runway bodies or fighting with one another during running. The moving plate is arranged, a drawing cord is drawn to make the moving plate move forwards along the runway, and convenience is provided for training the pets for running. Through arrangement of the first winding turntable and a second winding turntable, a user pulls the drawing cord to move forwards by quintuple distance, and operation is convenient.

The invention relates to a medical instrument, in particular to a bone nail countersink drill for the orthopedics department. The bone nail countersink drill comprises a bearing installation base anda bearing. The bearing is fixedly connected into the bearing installation base. A rotating shaft is fixedly connected with the inner ring of the bearing and penetrates through the bearing installationbase. A bone nail countersink drill stem is fixedly connected with the outer end of the rotating shaft. A gear is fixedly connected with the inner end of the rotating shaft. Two rotating rod fixing pieces are perpendicularly and fixedly connected with the upper end of the bearing installation base. A rotating rod is movably connected between the two rotating rod fixing pieces through a movable shaft. A rectangular rack fixing hole runs through the middle of the rotating rod. A rack is movably connected into the rectangular rack fixing hole through a pin shaft. The bone nail countersink drillis scientific and reasonable in structure, simple and convenient to operate and control, high in drilling efficiency, good in drilling quality, capable of shortening the time of orthopedic surgery andimproving the technological level of the orthopedic surgery and suitable for use and popularization.

The invention relates to the technical field of blind plate devices adopted for oil and gas field exploitation, in particular to a reciprocating circular blind plate device. The reciprocating circular blind plate device comprises a base, a body and a sliding blind plate, wherein the base is of an annular structure, an inner cavity in the left part of the base is a horn cavity becoming smaller from left to right, an annular installing groove is formed in the right end of the base, and the outer wall of the right part of the base and the inner wall of the right part of the body are fixedly installed together; the sliding blind plate comprises an installing head and a working plate, the left part of the installing head is shaped like an annular frustum matched with the horn cavity, the right part of the installing head is matched with the inner cavity of the base, and an axial through hole is formed in the middle of the working plate. The blind plate device is reasonable and compact in structure and convenient to use, the blind plate device is equivalent to a non-circular blind plate under normal conditions, when casing running meets resistance and circulation needs to be set up, a new circulating channel can be set up for well flushing through reverse pressure build-up, blockage is eliminated, and the risk of well cementing and completion is reduced; the base and the sliding blind plate can be drilled away easily, and the blind plate device can be widely applied to various occasions.

The invention relates to a method for injecting a cement plug into a horizontal well, and a construction method which are used for petroleum industry. The method for injecting the cement plug into thehorizontal well comprises the steps that the density of cement slurry and isolation liquid are equal, the cement slurry and the isolation liquid which are equal in density are displaced into an oil sleeve annulus from a construction pipe column in a spaced mode, the two send interfaces of a cement slurry and isolation liquid displaced section in the oil sleeve annulus are flush with the two sendinterfaces of a cement slurry and isolation liquid displaced section in the construction pipe column, the bottom of the construction pipe column, the oil sleeve annulus and a bottom hole are filled with the isolation liquid, meanwhile, the upper end interface of the isolation liquid displaced firstly and the upper end interface of the isolation liquid displaced lastly are located in the vertical well section of the horizontal well, at the moment, the construction pipe column is uplifted to the upper part of the upper end interface of the cement slurry, thus the cement slurry in the oil sleeveannulus is fused, after the well is shutdown for waiting on cement setting, the cement slurry located on the horizontal section is a suspended cement plug, and then the isolation liquid is washed out.The method has the advantages that construction is easy, operation is easy, sealing is reliable, the temperature-resistant performance is good, drilling is easy, and the method is not prone to beinglimited by the irregular well wall in a wellbore.

The invention relates to the technical field of manufacturing pressure vessels, in particular to an automatic scribing, positioning and opening equipment for metal horizontal pressure vessels. Locate the opening. The invention provides an automatic scribing, positioning, and drilling equipment for a metal horizontal pressure vessel, which can solve the problem of manually drilling a hole. The drilling process is cumbersome, and the drilling equipment is easy to shake during manual drilling, resulting in inconsistent diameters of the manually opened holes; it is difficult for the equipment to drill holes with different angles when drilling the pressure vessel. When drilling holes with different angles, it is necessary to rotate pressure vessel, which leads to cumbersome drilling process and reduces the production efficiency of pressure vessel.

The invention relates to a novel valve needle of a pressure control drilling throttle valve. The valve needle comprises a valve spool (1), a valve rod upper portion (2), a valve rod middle portion (3), a valve rod lower portion (4), a fluid passage (5), a cylindrical pin (6) and a lead filling area (11), stepped through holes are arranged along the axis direction of the valve spool (1), a transverse fluid passage (12) is arranged on the valve rod upper portion (2), the longitudinal fluid passage (5) arranged inside a valve rod is communicated with the transverse fluid passage (12), the valve rod lower portion (4) is connected with the valve spool (1) by means of threaded fit, the matched position of the valve spool (1) and the bottom end surface of the valve rod middle portion (3) is sealed by an O-shaped sealing ring (10), and the cylindrical pin (6) is inserted into a cylindrical pin groove. The valve needle has the advantages that the valve spool is made of YG8 alloy, the contour of the valve spool is machined in a numerically controlled manner according to a profile curve equation, the valve needle is high in machining accuracy, fine in abrasion resistance and erosion resistance, long in service life, fine in sealing performance and convenient to disassemble, and the valve spool is firmly connected with the valve rod.

A bridge plug having a large drift diameter comprises: an upper joint (1), a central pipe (7), a guide shoe head (12), and a bridge plug assembly; the upper joint and the guide shoe head are annular, the upper joint fixedly sleeves an outer side of one end of the central pipe, the guide shoe head fixedly sleeves the outer side of the other end of the central pipe, the bridge plug assembly sleeves the outer side of a middle section of the central pipe and is located between the upper joint and the guide shoe head, an apparatus for fixedly connecting to a pull rod(16) sleeved within the bridge plug is disposed on the guide shoe head, a soluble sphere base is disposed at the end of the central pipe proximal to the upper joint, and the central pipe is a drillable metal unit. The present invention also relates to a setting method of the bridge plug having a large drift diameter. The bridge plug having the large drift diameter eliminates a drilling and grinding step of the bridge plug and avoids the problems of a long construction time period, a high operation cost, and a large construction risk caused by the drilling and grinding step, such that the bridge plug is easier to use and faster to construct.