12results about How to "Improve lubricating properties" patented technology

The invention discloses a self-oil-catching low-friction composite groove of an inner curve hydraulic motor valve plate and a parameterization design method of the self-oil-catching low-friction composite groove, aiming at the low-friction design of the valve plate, the low-friction composite groove with a self-oil-catching function is designed on a plane of a sealing belt of the valve plate. Structural parametric modeling is conducted on the composite grooves, structural parameters corresponding to the composite grooves are reasonably selected, the valve plate composite grooves of different structures are obtained, corresponding structural models are established, and lubricating oil film distribution, bearing capacity and friction coefficients corresponding to the different structural models of the valve plate composite grooves are obtained through calculation and testing. And performing comprehensive comparison to obtain the optimal design parameters of the composite groove of the valve plate, which meet the optimization target. The self-oil-catching low-friction composite grooves with different structural parameters are designed on the surface of the valve plate of the inner curve hydraulic motor, so that the low-friction design of the surface of the valve plate is realized, the abrasion of the surface of the valve plate is reduced, the mechanical efficiency of the inner curve hydraulic motor is improved, and the service life of the inner curve hydraulic motor is prolonged.

The invention relates to the technical field of high polymer materials, in particular to a wear-resistant nylon sleeve and a preparation method thereof.The wear-resistant nylon sleeve is prepared from, by weight, 90-100 parts of nylon 6, 6-8 parts of self-lubricating microcapsules, 1-1.2 parts of carbon black, 2-3 parts of flame retardant and 0.8-1 part of antioxidant; according to the self-lubricating nylon sleeve, the self-lubricating microcapsules are added into the nylon sleeve, and the self-lubricating microcapsules are prevented from being damaged in the preparation process of the nylon sleeve through centrifugal reaction and modification of the microcapsule wall material, and meanwhile, the nylon sleeve has a good self-lubricating property and keeps good wear resistance in the long-term use process.

The invention provides a preparation method of composite easy-to-eat gel based on gel skeleton reconstruction, which comprises the following steps: rinsing cooked fish meat with a NaCl solution, mixing with water, and crushing to obtain fish meat slurry; mixing functional grease with the egg white microgel particle solution, and performing high-speed shearing to prepare a high-internal-phase emulsion, so as to obtain a regulation and control assembly; and performing high-pressure homogenization treatment on the fish pulp, adding a regulation and control assembly while performing high-pressure homogenization treatment, and cooling to obtain the composite easy-to-eat gel. According to the invention, a protein-based gel network is reconstructed into a more complex cobweb-shaped gel skeleton from an ordered #-shaped structure, so that the regulation and control of the gel from flexibility to rigidity are realized, and the hardness, friction characteristics and the like of the composite easy-to-eat gel are regulated and controlled by changing the addition amount of the egg white microgel emulsion; the texture characteristics of the prepared composite easy-to-eat gel can be suitable for patients with different swallowing difficulty degrees, and the composite easy-to-eat gel has excellent storage stability.

This invention discloses a high-conductivity emulsion-type intelligent fracturing fluid for oil and gas field enhancement and its preparation method. This fracturing fluid aims to solve the technical problem of the contradiction between the proppant-carrying capacity and the post-colloidal conductivity of traditional fracturing fluids in deep wells under high temperature and high salinity environments. Its core lies in the introduction of a temperature- and salt-responsive zirconium-silicon hybrid nano-crosslinking agent and biomimetic surface-modified layered silicate nanosheets. In preparation, a water-in-oil base emulsion is first formed, followed by the sequential addition of the two modified compounds. The nano-crosslinking agent is prepared through silanization and polymer grafting processes, enabling intelligent activation and viscosity enhancement under formation conditions. The nanosheets are prepared through montmorillonite exfoliation and biomimetic dopamine coating modification, combining drag reduction and proppant surface modification functions. This fracturing fluid system achieves intelligent response with low friction during pumping, high proppant-carrying capacity in the formation, and the formation of high-conductivity channels after colloidal breakdown, making it particularly suitable for fracturing and stimulation of deep and unconventional reservoirs.

The present application discloses a pin-type double-acting vane pump structure and control method for improving lubrication characteristics, wherein the pin-type root chamber and the high-pressure chamber of the rear distribution plate are connected through an electromagnetic inverse proportional pressure reducing valve. The pin-type double-acting vane pump has a compact structure and does not affect the original working mode. It can adjust the oil pressure of the root chamber in real time according to information such as oil temperature, load pressure, and speed by controlling the electromagnetic inverse proportional pressure reducing valve, so that the oil film thickness between the blade tip and the inner curved surface of the stator is kept in the optimal state, effectively reducing the friction and wear between the blade tip and the inner curved surface of the stator, and improving the service life and working efficiency of the vane pump under different working conditions.

The invention is suitable for the technical field of superhard film production, and provides a method for improving the tribological performance of a diamond-like carbon film, and the method comprises the following steps: S1, pretreating a substrate material, and removing surface pollutants; s2, depositing a Cr / WC composite transition layer on the surface of the substrate by using an unbalanced magnetron sputtering technology; s3, depositing a DLC film on the Cr / WC composite transition layer by using a high-energy ion source; and S4, performing high-energy hydrogen ion implantation on the surface of the prepared DLC film to form a hydrogen-rich modified layer. Therefore, the friction coefficient of the diamond-like carbon film can be obviously reduced, and the reduction amplitude exceeds 50%; and the running-in period is shortened from 5000 cycles to less than 2000 cycles, so that the running-in period is greatly shortened, and the rapid lubrication response capability under the starting and stopping working conditions is improved. Meanwhile, when the modified DLC thin film is subjected to opposite grinding with H-DLC, the modified DLC thin film can keep excellent lubricating property in 30000 abrasion cycles.

The non-uniform porous medium mechanical end face sealing structure comprises a movable ring and a static ring which are used for mechanical sealing, the outer diameter side of the movable ring or the static ring is a high-pressure side, and the inner diameter side of the movable ring or the static ring is a low-pressure side; the high-pressure side of the moving ring or the static ring is a porous medium sealing ring, the porous medium sealing ring comprises a first porous medium sealing material and a second porous medium sealing material, and the first porous medium sealing material and the second porous medium sealing material are periodically and alternately arranged in the circumferential direction of the high-pressure side; a solid sealing ring is arranged on the low-pressure side of the moving ring or the static ring, the porous medium sealing ring and the solid sealing ring are integrally formed in a sintering mode, and the outer circumference of the porous medium sealing ring makes contact with a sealing medium. The invention has the remarkable characteristics of keeping the end surfaces of the movable and static rings non-contact during starting and stopping, large bearing capacity in the operation process, small abrasion and long service life.

This utility model discloses an arc-shaped bevel worm gear reducer device with a clutch function, including a housing, an input shaft, and an output shaft. An arc-shaped bevel worm gear is mounted on the input shaft, and a conical worm wheel is slidably connected to the outer wall of the output shaft, with the arc-shaped bevel worm gear and the conical worm wheel engaging with each other. A clutch mechanism that engages with the conical worm wheel is provided inside the housing. The arc-shaped bevel worm gear has good lubrication characteristics and tooth surface contact stress characteristics, which is beneficial for improving the transmission performance and service life of the bevel worm gear reducer. The arc-shaped bevel worm gear meshes with the conical worm wheel. A movable sliding key sleeve, under the action of a shift fork, drives the conical worm wheel to move axially along a fixed key on a fixed shaft, realizing the separation and engagement of the bevel worm gear, thereby interrupting and transmitting power. Three pin holes and limiting pins that engage with the pin holes are provided, allowing for insertion as needed to maintain the working state of the arc-shaped bevel worm gear reducer, thus fixing the state of the operating handle.

The utility model provides a self-lubricating bearing based on a PTFE (Polytetrafluoroethylene) film, and belongs to the technical field of bearings. A self-lubricating bearing based on a PTFE film comprises a ring body with a fracture, a PTFE layer is compounded on an inner ring of the ring body, at least one first groove is formed in the ring body, a graphite flake with colors is embedded in the first groove, and the PTFE layer covers the graphite flake. The lubricating device has the advantages of being good in shaft rotation lubricating effect and low in cost.

The present invention relates to a graphite lubrication device for a rotary kiln, which comprises a roller seat and a roller; the roller is rotatably arranged on the roller seat; and a mounting bracket is also provided; the mounting bracket comprises a support portion, the support portion is fixedly connected to the roller seat, a box body is fixedly provided on the support portion, and a through cavity is provided on the box body; the graphite block is slidably arranged in the through cavity of the box body; a weight ball is provided in the box body, which presses on the upper end of the graphite block, drives the lower end of the graphite block to extend from the box body and always clings to the circumferential surface of the roller. The present invention enables the graphite block to obtain a lasting clamping force and lubricates the surface of the roller through the action of the graphite block and the clamping assembly. The present invention also has the characteristics of simple structure, convenient maintenance and low failure rate.

The present invention discloses a self-oil-catching low-friction composite groove of an inner curve hydraulic motor distribution plate and a parametric design method thereof. With the low-friction design of the distribution plate as the goal, a low-friction composite groove with a self-oil-catching function is designed on the plane of the sealing belt of the distribution plate. The structural parameterization modeling of the composite groove is performed and the structural parameters corresponding to the composite groove are reasonably selected to obtain distribution plate composite grooves with different structures and establish corresponding structural models. The lubricating oil film distribution, bearing capacity and friction coefficient corresponding to different structural models of the distribution plate composite groove are obtained through calculation and experiment, and the design parameters of the optimal distribution plate composite groove that meets the optimization target are obtained by comprehensive comparison. The present invention realizes the low-friction design of the distribution plate surface by designing self-oil-catching low-friction composite grooves with different structural parameters on the surface of the distribution plate of the inner curve hydraulic motor, reduces the wear of the distribution plate surface, and improves the mechanical efficiency and service life of the inner curve hydraulic motor.

The invention relates to a lubricating composition comprising water and, relative to the total weight of the lubricating composition:-1% to 60% by weight of a poly (alkylene glycol),-0.5% to 30% by weight of a polyetheramine. The invention also relates to the use of said lubricating composition as a metal working fluid, preferably selected from steel and aluminum.