6results about How to "Satisfy tightness" patented technology

The utility model belongs to the technical field of luggage bag opening sealing, and provides a luggage bag opening sealing device which comprises a luggage main body, a sealing mechanism is arranged on the inner side of the luggage main body, the sealing mechanism comprises a vacuum compression bag arranged on the inner side of the luggage main body, and a sealing strip capable of being closed is arranged at the outer end of the vacuum compression bag. One side of the vacuum compression bag is communicated with an air hole connected with an air pump to compress the space of the vacuum compression bag, shoulder straps are arranged on the outer side of the luggage main body, and a zipper convenient to close is also arranged on the inner side of the luggage main body; the design of the luggage is simplified through the sealing mechanism, the balance of portability and sealing performance is realized, the vacuum compression bag is arranged on the inner side of the luggage, and the sealing strip capable of being closed is arranged at the outer end of the vacuum compression bag, so that the luggage is convenient for a user to operate, can meet the requirements of sealing performance, water resistance and dust resistance, and is convenient to use. A user can easily carry the luggage for short-distance travel or daily travel, and the air holes can be connected with an air pump to compress the space of the vacuum compression bag, so that the use capacity of the luggage is improved.

The invention relates to a carbon black granulation master batch external circulation system and a use method thereof.The system integrates a product storage tank, a cyclone separator, a dust collection fan, a dry-method granulator and a central processing system, and core equipment of the carbon black granulation master batch external circulation system forms closed-loop association through material flow and air flow; the unit serves as a material processing unit; the cyclone separator is used as a grading unit and is connected with a feeding part of the dry-method granulator; the product storage tank is used as an intermediate storage unit and is connected with a feed of the cyclone separator; the dust collection fan serves as an auxiliary unit, is connected with the top of the cyclone separator and is responsible for airflow and dust recovery; the control unit comprises airtight valves and a central processing system, and the airtight valves are mounted at outlets of the cyclone separator and the product tank and are matched with frequency conversion to control the feeding amount. By optimizing the equipment configuration and the technological process, efficient granulation of the carbon black, efficient recovery of the master batch and stable improvement of the product quality are achieved, and the method can be widely applied to the post-treatment process of the carbon black.

The utility model relates to a kind of exhaust device for acetylene production, including tank, liquid seal device, solid-liquid separation device, vibrating device, transmission shaft, liquid discharge device, motor, mounting bracket, the side of tank is symmetrically provided with two gas ports and one end of one of gas ports is equipped with liquid seal device, solid-liquid separation device is installed at the lower end of tank, vibrating device is arranged in tank, the liquid seal device of the utility model can seal gas in tank and detect gas pressure in tank and can send signal to external controller and issue alarm when reaching set value, meet the high requirement of acetylene production for sealing property and safety, the solid-liquid separation device of the utility model can carry out solid-liquid separation to waste material after production, the utility model carries out exhaust treatment under enough sealing, safety condition, and the separation of waste residue and production raw material is designed.

This invention relates to the field of rubber hose technology, and discloses a highly flexible and pressure-resistant rubber hose and its preparation method. The preparation method is as follows: An inner layer compound rubber is fed into an extruder and extruded at 70-90°C to form a tubular inner rubber layer. Then, on the surface of the tubular inner rubber layer, polyester tempered brown filaments are braided into a tubular skeleton using a braiding machine, controlling the braiding density to be 80%-95% and the braiding angle to be 45°-60°. Finally, an outer layer compound rubber is fed into an extruder and extruded at 70-90°C to coat the outside of the skeleton layer, forming an integrated composite hose blank. The blank is then fed into a vulcanizing device, controlling the vulcanizing pressure at 0.8-1.2 MPa, the temperature at 150-170°C, and the holding vulcanization for 25-50 minutes. After vulcanization, it is cooled to obtain a highly flexible and pressure-resistant rubber hose. The highly flexible and pressure-resistant rubber hose prepared by this invention has excellent pressure resistance, flexibility, and aging resistance.

The utility model provides a cement sample reserving barrel. The cement sample reserving barrel comprises a barrel body, a barrel cover and a sample separating frame, the barrel body is filled with a buffer layer, the buffer layer forms a plurality of uniformly distributed vertical placement grooves in the barrel body and is used for accommodating the sampling liner, and a sealing cover is detachably mounted at an opening of the sampling liner; the sample separation frame is formed by arranging a plurality of separation guide plates in an annular array with the axis of the barrel body as the center, the two side walls of each separation guide plate are guide slopes, the separation guide plates are arranged above the interval areas between the adjacent containing grooves, and a cone with the tip facing upwards is arranged in the center of the sample separation frame; a feeding hopper is erected above the cone through a bracket; the sample separation frame is erected at an opening of the barrel body and can be detachably fixed on the lower side of the barrel cover, and the barrel cover can be detachably and fixedly connected with the barrel body; when the barrel cover and the barrel body are buckled, a closed containing cavity is formed, and the sample separating frame can be contained in the containing cavity.

The invention relates to the technical field of rubber hoses, and discloses a high-flexibility pressure-resistant rubber hose and a preparation method thereof.The preparation method comprises the following steps that inner-layer rubber compound is put into an extruder and subjected to extrusion molding at the temperature of 70-90 DEG C to form a tubular inner rubber layer, polyester tempered palm fibers are made into a tubular framework on the surface of the tubular inner rubber layer through a braiding machine, and the tubular framework is subjected to extrusion molding at the temperature of 70-90 DEG C; the weaving density is controlled to be 80%-95%, the weaving angle is 45-60 degrees, finally, the outer-layer rubber compound is put into an extruder and extruded at the temperature of 70-90 DEG C to coat the outer side of the framework layer, and a composite hose blank is integrally obtained; feeding the tube blank into vulcanization equipment, controlling the vulcanization pressure to be 0.8-1.2 MPa and the temperature to be 150-170 DEG C, preserving heat and vulcanizing for 25-50 minutes, and cooling after the vulcanization is finished, so as to obtain the high-flexibility pressure-resistant rubber hose. The high-flexibility pressure-resistant rubber hose prepared by the invention has good pressure resistance, flexibility and aging resistance.