11 results about "Cone shell" patented technology

The utility model relates to the technical field of seeding devices, in particular to a sand aerial seeding seed cone manufacturing device which comprises a triangular pyramid tray, a cover plate, a seed storage mechanism and a locking mechanism, the cover plate is arranged on the triangular pyramid tray, the seed storage mechanism is arranged on the triangular pyramid tray, and the locking mechanism is arranged on the triangular pyramid tray. The locking mechanism is arranged between the triangular pyramid tray and the cover plate, the seed storage mechanism comprises a triangular pyramid body, a seed storage cavity, a cone shell and a seed nutrition layer, the triangular pyramid body serves as a seed aerial seeding carrier and is embedded into a soil layer through cone kinetic energy, and the cone shell can be gradually collapsed after absorbing water in soil, so that the seed nutrition layer is formed; according to the device, the seeds can be further exposed in a sand land environment, a microenvironment is created through the seed nutrition layer, a suitable and timely growth environment is provided for seedling emergence of the seeds, the seedling rate of the aerial seeding seeds can be increased, meanwhile, the device can reduce manpower and material resource investment, and the limitation of seeding topographic conditions can be reduced.

The three-degree-of-freedom centrosymmetric distributed driving variant nose cone comprises a plurality of sections of circular-truncated-cone-shaped shells which are coaxially connected in a sleeving mode, the diameters of the circular-truncated-cone-shaped shells are decreased step by step, and a centrosymmetric bearing transverse plate is fixedly arranged in each section of circular-truncated-cone-shaped shell and used for providing a branched chain installation reference; the adjacent circular-truncated-cone-shaped outer shells can move relatively so as to achieve stretching or bending deformation. Three sets of driving branch chains and three sets of driven branch chains are arranged between the bearing transverse plates of every two adjacent sections of the circular-truncated-cone-shaped shell, the three sets of driving branch chains and the three sets of driven branch chains are distributed in a central symmetry mode in the circumferential direction of the bearing transverse plates, and the circumferential included angle between every two adjacent branch chains is 120 degrees. The top pneumatic effect can be optimized by increasing the curvature of the conical head part of the fifth section of head conical shell; through the combined arrangement of the SPS branch chains and the RSR branch chains, more flexible deformation is achieved, and sufficient center space is achieved; by arranging the transverse plate, the position of the base is flexible, and the pressure of the shell can be reduced. The device can be used for design or reference in the field of aerospace aircrafts or high-performance vehicles.

The low-stress high-temperature-resistant expansion joint with the limiting function comprises an end pipe I, a conical shell I, a corrugated pipe, a conical shell II and an end pipe II, the end pipe II is fixedly connected with the conical shell I, the conical shell II is fixedly connected with the end pipe II, and the two ends of the corrugated pipe are fixedly connected with the conical shell I and the conical shell II respectively. The expansion joint at least has the axial limiting function and the torsion limiting function, the limiting assembly is located in an area formed by the conical shell I, the corrugated pipe and the conical shell II, and the limiting assembly is located between the end pipe I and the end pipe II. The limiting assembly is arranged in the inner cavity of the expansion joint, the radial, axial and torsion limiting functions can be achieved, meanwhile, through the structural design, it is guaranteed that the expansion joint is in a low-stress state, flow resistance during medium circulation is reduced, and therefore the requirement for long-term safe operation of the expansion joint under the high-temperature working condition is met.

The invention relates to the technical field of water pump operation, in particular to a stabilizing mechanism for a middle-open type water pump. The hub comprises a hub body and a front water guide cone which are connected, the front water guide cone comprises a cone shell and a cone cover closed on one side of the tip end of the cone shell, a central through hole is formed in the center of a side plate on one side of the tip end of the cone shell, a groove is formed in the outer edge of the side plate in the circumferential direction, and a boss matched with the groove is arranged on the outer edge of the inner side wall of the cone cover in the circumferential direction. The polyurethane foam is filled in the cavity of the hub body and the cavity of the front water guide cone, water is effectively prevented from invading the space in the cavity, the situation of water seepage is fundamentally eradicated, meanwhile, media in the cavity can support the inner wall of the hub body and the inner wall of the front water guide cone, and the problems existing in the prior art are solved.

The present invention relates to a method for predicting the natural frequency of a stiffened conical shell, comprising the following steps: S1-S2, writing the vibration control equations of the conical shell and the concentric annular plate into a dynamic stiffness matrix related to the internal force and displacement thereof; S3, discretizing the conical shell into a plurality of sub-segments, and splicing the plurality of substructures in the stiffened conical shell by utilizing two boundary conditions of displacement continuity and force balance between the ribs and the conical shell sub-segments; S4, on the premise of obtaining the dynamic stiffness of the overall calculation model, performing a correction and substitution method on the matrix elements corresponding to each degree of freedom in the dynamic stiffness matrix; S5, obtaining a curve of the dynamic stiffness matrix determinant of the overall model varying with frequency by solving the determinant of the overall stiffness matrix, and identifying and obtaining the natural frequency of the overall structure through the maximum and minimum values in the frequency response curve, quickly evaluating the natural frequency of tail structures such as the conical shell, and improving the safety and reliability of equipment containing the conical shell structure.

The utility model discloses a coking stilling ammonia wastewater deoiling and separating device, which comprises a separating box and a water tank, the inside of the separating box is divided into a light oil separating chamber and a heavy oil separating chamber by a separating layer made of oleophylic and hydrophobic materials, the separating layer sequentially comprises an inclined tube component layer and a sponge layer from bottom to top, and a plurality of conical shells are arranged in the light oil separating chamber. The lower end of the conical shell extends into the heavy oil separation chamber, a conveying belt is obliquely arranged on the upper portion in the light oil separation chamber, a sponge belt made of oleophylic and hydrophobic materials is arranged on the belt face of the conveying belt, and a supporting block and a flow guide groove are arranged on the two sides of a lower belt below the higher end of the conveying belt respectively. The upper end of the inclined plate abuts against the sponge belt and the supporting block, the end of the flow guide groove extends out of the separation box, and a water drainage pipe and an oil drainage pipe are arranged at the bottom of the light oil separation chamber and the bottom of the heavy oil separation chamber respectively. In conclusion, the device has the advantages of high working efficiency, thorough tar separation and good oil removal effect.

The application discloses a multi-stable thin cone shell dense arrangement energy absorption metamaterial, which comprises a top plate and a bottom plate, and a plurality of arrayed thin cone shell cells are connected between the top plate and the bottom plate; the thin cone shell cells are made of high-elastic rubber and have a hollow structure; each thin cone shell cell is composed of an upper cone shell and an inverted lower cone shell which are sealingly connected; energy absorption unit shafts are arranged at the top of the upper cone shell and the bottom of the lower cone shell; second exhaust holes are formed in the middle of the energy absorption unit shafts and communicate with the inner cavities of the thin cone shell cells; first exhaust holes are formed in the top plate and the bottom plate and communicate with the second exhaust holes; and a preparation method of the multi-stable thin cone shell dense arrangement energy absorption metamaterial is also disclosed. D The energy absorption metamaterial is prepared by printing technology and has the characteristics of multi-stable equilibrium state and sustainable conversion between states, and can be repeatedly used.

The present invention discloses cone snail α-helical and β-pleated antimicrobial peptides, as well as their preparation and application. Three antimicrobial peptide precursor gene nucleic acid sequences, as shown in SEQ ID NOs. 1 to 3, were screened from a barrel-shaped cone snail multi-omics dataset. These three nucleic acid sequences were translated into amino acid sequences, and peptide sequences representing the antimicrobial active regions were designed with reference to known antimicrobial peptide sequences, resulting in three polypeptides represented by amino acids as shown in SEQ ID NOs. 7 to 9. These peptides were then directly synthesized using chemical methods to obtain the three cone snail antimicrobial peptides. The three cone snail antimicrobial peptides obtained have been shown to specifically inhibit the growth of Pichia pastoris or Escherichia coli, exhibiting good antimicrobial activity. These peptides can be used to prepare products with antimicrobial activity, demonstrating promising application prospects and economic value.

The utility model discloses an X-ray detection device for a longitudinal welding seam of a conical shell. An inclined guide rail is arranged on the supporting frame, a bracket is connected above the guide rail, an X-ray flaw detector is fixed on the bracket, a supporting rod is arranged below the guide rail, a spring tension balancer is fixed on the supporting frame at the upper end of the guide rail, one end of the spring tension balancer is fixed on the frame, and the other end of the spring tension balancer is connected with the X-ray flaw detector. The guide rail is connected with a bracket, so that the X-ray flaw detector can slide up and down along the guide rail. The X-ray flaw detector has the advantages that the X-ray flaw detector can slide up and down along the guide rail by arranging the guide rail, and meanwhile, the angle and focal length between the X-ray flaw detector and a conical shell welding seam can be further accurately adjusted by the adjusting bolt, so that the requirements of different detection parts are met, the detection convenience and flexibility are improved, and the reliability of a detection result is ensured.

The present invention relates to a vibration prediction modeling method for a ring-ribbed cone-cylinder composite shell. Starting from the basic solution of the conical shell vibration response, the dynamic stiffness matrix of the conical shell is derived. By changing the cone top angle of the conical shell, the conical shell is degenerated into a cylindrical shell and an annular plate. Then, with the conical shell, the annular plate and the cylindrical shell as the three basic substructures, multiple substructure shells are spliced ​​together by utilizing the displacement continuity and internal force balance conditions on the splicing surface of the composite shell to form the overall dynamic stiffness matrix of the composite shell in the global coordinate system. The dynamic stiffness matrix is ​​used to predict the natural frequency and vibration response of the composite shell.

The visible structure of the esterification tower filter comprises a shell and a filter basket, an upper opening is formed in the bottom of the shell, the shell extends in the radial direction at the position of the upper opening to form an upper flange, a transparent conical shell is arranged at the bottom of the shell, and a lower opening corresponding to the upper opening is formed in the top of the transparent conical shell. A lower flange is arranged on the outer side of the lower opening of the transparent conical shell, the upper flange corresponds to the lower flange, a drain outlet is formed in the bottom of the transparent conical shell, the bottom of the filter basket extends downwards into the lower shell to form a visible area, a connecting structure is arranged between the upper flange and the lower flange, and a sealing structure is arranged between the transparent conical shell and the shell. A support structure is arranged on the outer side of the shell. Due to the design of the transparent conical shell, a worker can observe whether the bottom of the filter basket is blocked or settled upwards through the visible area at the bottom of the transparent conical shell, and then whether the filter basket needs to be cleaned, replaced or backwashed or not is judged.