34results about How to "To achieve the sealing effect" patented technology

The invention provides modified poly (propylene carbonate), which comprises a cross-linked poly (propylene carbonate) with polyphenyl polymethylene polyisocyanates as a cross-linking agent, as well as a polymer of hexanedioic acid and 1,2-propylene glycol ester, wherein the mass ratio of poly (propylene carbonate) to the polyphenyl polymethylene polyisocyanates is 100:(0.1-2), and the mass ratio of the cross-linked poly (propylene carbonate) to the polymer of hexanedioic acid and 1,2-propylene glycol ester is 100:(5-20). A preparation method of the modified poly (propylene carbonate) comprises the following steps: blending and extruding the poly (propylene carbonate) and the polyphenyl polymethylene polyisocyanates to obtain the cross-linked poly (propylene carbonate); and blending and extruding the cross-linked poly (propylene carbonate) and the polymer of hexanedioic acid and 1,2-propylene glycol ester to obtain the modified poly (propylene carbonate). The modified poly (propylene carbonate) provided by the invention is good in thermal stability, high in tensile elongation at break, good in transparency and capable of being biodegraded completely.

The invention provides a polypropylene carbonic ester compound and a preparation method thereof. The polypropylene carbonic ester compound comprises polypropylene carbonic ester, poly1,2-propanediol succinate and maleic anhydride, and the weight ratio of the polypropylene carbonic ester, the poly1,2-propanediol succinate and the maleic anhydride is 100:4-100:0.1-1. The polypropylene carbonic ester compound has higher tenacity and has the break elongation rate of 1,108%, and the material has higher transparency. Since the polypropylene carbonic ester and the poly 1,2-propanediol succinate have complete biodegradation, the polypropylene carbonic ester compound has higher tenacity and keeps the transparency and the complete biodegradation. Furthermore, the polypropylene carbonic ester material has wider application space.

The invention relates to sealing equipment, in particular to medicine barrel sealing equipment used for the pharmacy department. The medicine barrel sealing equipment, capable of automatic feeding, automatic sealing and automatic film replacing, used for the pharmacy department is provided. The medicine barrel sealing equipment used for the pharmacy department comprises a baseboard, stopping blocks and oblique blocks, wherein the two stopping blocks are arranged on the baseboard, the two oblique blocks are arranged on the baseboard, a film-laminating sealing mechanism is arranged on the baseboard, and a manual downward-pressing mechanism is arranged on the film-laminating sealing mechanism. According to the medicine barrel sealing equipment used for the pharmacy department, by arranging a transfer mechanism, the transfer mechanism runs to drive a pushing mechanism and a clamping mechanism to run, the pushing mechanism runs to make the manual downward-pressing mechanism run, the clamping mechanism drives medicine barrels to move rearwards, the medicine barrels are sealed by the manual downward-pressing mechanism, thus effects of automatic feeding and automatic sealing are achieved, by arranging an automatic take-up mechanism, an automatic downward-pressing mechanism runs to drive the automatic take-up mechanism to run, and thus sealing films are updated, so that an effect of automatically updating the sealing films is achieved.

The invention belongs to the technical field of thermal spraying corrosion prevention, and particularly relates to a high-temperature-resistant inorganic hole sealing agent for a thermal spraying coating and a preparation method of the high-temperature-resistant inorganic hole sealing agent. Aiming at the problems of insufficient hole sealing depth, no high-temperature resistance, easiness in embrittlement and the like of an existing hole sealing agent, the invention provides the high-temperature-resistant inorganic hole sealing agent for the thermal spraying coating. The high-temperature-resistant inorganic hole sealing agent comprises the following components in percentage by weight: 30-40 percent of inorganic film-forming agent, 40-60 percent of inorganic functional sol, 1-10 percent of rare earth sol and 1-10 percent of stabilizer. The invention further provides a preparation method and a use method of the hole sealing agent. The hole sealing agent has better permeability, the hole sealing effect can be achieved more quickly, and the hole sealing depth can be increased; and meanwhile, the adhesive force is better, the toughness of the coating is better, and brittle failure after hole sealing is avoided. The invention provides a hole sealing agent with more excellent performance for the industry, and the hole sealing agent has very good economic benefits.

The invention discloses a moisture heating tank which comprises a body, an upper cover and a sealing unit which comprises a first sealing part and a second sealing part. The body comprises a heat conduction bottom plate and a surrounding wall extending upwards from the heat conduction bottom plate, and the surrounding wall and the heat conduction bottom plate define a space and an opening arranged above the space together; the upper cover comprises a cover body which removably covers the opening, and the cover body is provided with an air inlet and an air outlet; and the first sealing part is arranged on the surrounding wall near the opening, the second sealing part is arranged on the cover body, and the first sealing part and the second sealing part can be mutually matched to enable the upper cover to tightly close the opening of the body. Preferably, the first sealing part is provided with a plurality of locking hooks, the second sealing part is provided with a plurality of locking strips, and the locking hooks and the locking strips can be respectively packed correspondingly. The invention can prevent water seepage, and the upper cover and the body can be separated and are convenient to clean. The sealing effect is achieved by utilizing the locking hooks, the locking strips and a sealing cushion. The sealing cushion is arranged far away from the heat conduction bottom plate, is not easily influenced by high temperature and can be replaced when tired.

The invention provides an inner engaging gear pump used for a stopper of a petroleum machinery oil tube with an over-small hole in an oilfield. The other end of a shell body is matched with a right support and then fixedly connected with a right end cap, a full-moon-shaped supporting block is arranged in the shell body, and an inner gear ring is arranged in the full-moon-shaped supporting block; a left floating side plate is arranged on the left side of the inner gear ring, a right floating side plate is arranged on the right side of the inner gear ring, and a right support is arranged between the right floating side plate and the right end cap; a lip-shaped sealing ring is arranged between the right support and the right end cap, a gear shaft is eccentrically arranged in the inner gear ring and engaged with the inner gear ring, and a first sliding bearing is arranged among the shell body, the right support and the gear shaft; a second sliding bearing is arranged among the left floating side plate, the right floating side plate and the gear shaft, a crescent-shaped plate is arranged between the gear shaft and the inner gear ring, and a crescent-shaped plate fixing pin is arranged between the left floating side plate and the right floating side plate; and a crescent-shaped plate stopping pin is arranged between the left support and the right support, and a full-moon-shaped supporting block fixing pin is fixed on the left support and has a fixing impact on the full-moon-shaped supporting block.

The invention provides a paper shredder capable of automatically packaging shredded paper and an automatic shredded paper packaging method of the paper shredder. The paper shredder comprises an automatic packaging device, wherein the automatic packaging device is mounted at the upper part of the machine body, and equipped with a shredded paper collecting bag storage box, a closing mechanism and asealing-fusing mechanism; a shredded paper collecting bag is stored in an inner cavity of the shredded paper collecting bag storage box; a paper dropping port is formed in the inner side of the shredded paper collecting bag storage box and penetrates through the shredded paper collecting bag storage box vertically; the bag mouth of the shredded paper collecting bag is open towards the paper dropping port; in the sealing and packaging state, the shredded paper collecting bag is closed by the closing mechanism at the sealing-fusing mechanism; the sealing-fusing mechanism is controlled by a control circuit to cut off the bag body; and the sealing effect and the packaging effect are achieved at a time. According to the structure of the paper shredder provided by the invention, the operation issimpler, more convenient and faster.

The invention provides a rotating sheet type high-temperature high-pressure gas (liquid) elastic contact type dynamic sealing device which comprises a movable ring and a stationary ring, wherein the movable ring is hermetically fixed to an outer circumferential surface of a rotor, and the stationary ring is fixed to an inner molded surface of a shell corresponding to the rotor. The movable ring comprises a low pressure side matrix, a high pressure side matrix and a plurality of sealing sheets distributed along the circumferential direction of the rotor located in an inner cavity formed by thelow pressure side matrix and the high pressure side matrix. Inclination angles exist between the sealing sheets and the axial direction and the radial direction of the rotor. Compared with the prior art, the sealing sheets not only play a vertical cutting role to an air flow, but also change the direction of the air flow and thrust the incoming flow reversely. The sealing sheets play a disturbingrole to entering high-temperature high-pressure gas (liquid), so that the gas (liquid) cannot pass through a gap between the movable ring and the stationary ring, thereby playing a sealing role to a medium.

The invention relates to a textile machine. The textile machine has a drafting arrangement for drawing a fiber package (1), where the drafting arrangement has a delay zone (2) and a compression zone (3) that downstreams a delay zone (2) in the transport direction of the fiber package. The compression zone (3) has a suction element (4) for passing the fiber package for drawing the fiber package compressed in the delay zone. The suction element is fastened at a movably mounted support arm (6) and is moved into a maintenance position relative to a suction line (5) by the support arm. The suction element is connected with the suction line (5) in the maintenance position.

The invention relates to a cigarette packet kraft paper glue spraying, sealing and bundling method and device. The method comprises the following steps of 1) spraying hot melt glue onto a kraft papersealing part; and 2) laminating the hot melt glue at the sealing part to finish bundling. The device comprises a kraft paper bundling mechanism for cutting kraft paper, wherein the kraft paper bundling mechanism is connected with a glue spraying module; the glue spraying module is used for spraying the hot melt glue onto a kraft paper sealing edge; and after completion of glue spraying, the kraftpaper bundling mechanism crosses the kraft paper sealing edge, and performs lamination with external force to finish bundling. According to the method and device, the hot melt glue is sprayed at the kraft paper sealing part before bundling, and the bent sealing edge is laminated and sealed with external force in order to achieve the sealing effect; automatic bundling is realized; and bundling of cigarette packet kraft paper of different sizes is met.

The invention relates to sealing equipment, and in particular relates to automatic sealing equipment for medical bottle caps. The technical problem of the invention is to provide the automatic sealing equipment for the medical bottle cap, which is relatively high in sealing performance and has an automatic pushing function. According to the technical scheme, the automatic sealing equipment for the medical bottle caps comprises a bottom plate, a supporting plate, a downward pressing mechanism, a driving mechanism and a material shifting mechanism; the supporting plate is arranged at the top of the bottom plate; the downward pressing mechanism is arranged at the top of the supporting plate; the driving mechanism is arranged between the downward pressing mechanism and the bottom plate; and the material stirring mechanism is arranged on the driving mechanism. According to the invention, through the action of the driving mechanism, the material stirring mechanism pushes the medical bottle caps to the downward pressing mechanism; the downward pressing mechanism performs sealing work on the medical bottle caps; and the effect of automatically sealing the medical bottle caps is achieved.

The invention discloses a water injection packer which comprises an upper joint, a central pipe, an upper rubber barrel seat, a rubber barrel liner pipe, a rubber barrel, a lower rubber barrel seat and a lower joint. A piston ring is connected at the lower end of the lower rubber barrel seat outside the central pipe, a piston is connected outside the piston ring, a hydraulic cylinder is connected outside the central pipe in the piston, and a hydraulic cavity is formed among the piston ring, the piston, the hydraulic cylinder and the central pipe. Therefore, the rubber barrel can be compressed to deform by water injection, and packing effect is achieved.