32results about How to "Meet the requirements of long-term operation" patented technology

The invention discloses and relates to a ranking method of separation media in a boiling bed separator. The method comprises the steps that a whirlcone is arranged at the upper part of the boiling bed separator; during the regeneration, the separation media in a filtering bed layer of the boiling bed separator is in a complete fluidized state; the separation media upwards enters the whirlcone; after cyclone ranking, the separation media flows out from the whirlcone in a sequence from high specific gravity to low specific gravity; after the back flushing regeneration is completed, the separation media is continuously used for purifying process water generated in a MTO (Methanol To Olefin) process, wherein the filtering bed layer of the boiling bed separator is formed by multiple layers of different separation media; the separation media particle size distribution is downwards reduced layer by layer; the specific gravity of the separation media is downwards increased layer by layer.

The present invention discloses a novel double-column vertical open type outdoor high-voltage AC disconnecting switch. The switch comprises a bottom frame, a first pillar insulator, a second pillar insulator, a conductive loop, a static side contact socket, and a movable side contact socket. The conductive loop comprises a conductive blade, and the conductive blade is provided with a self-lockingdevice; a latching device is arranged above the second pillar insulator and on one side of the static side contact socket away from the movable side contact socket, and the side surface of the latching device is provided with a concave latching groove; the position of the concave latching groove is engaged with a hook body; the hook body is internally provided with a stainless steel leaf spring; the conductive loop adopts a fully enclosed structure; all conductors of the conductive loop are enclosed inside the insulating material; and a static contact, a static side wiring board and a movableside wiring board are installed in the insulator. According to the technical scheme of the present invention, the stainless steel leaf spring is arranged in the hook body, so that influence on the rotation sensitivity of the hook body caused by the exposure of the stainless steel leaf spring to the wind and rain can be avoided; and by using the fully enclosed structure of the conductive loop, short circuits caused by birds and foreign objects can be avoided.

The invention discloses flexographic printing equipment with high fitting degree and a printing method, and belongs to the field of flexographic printing equipment. The invention discloses high-fitting-degree flexographic printing equipment and a printing method. The high-fitting-degree flexographic printing equipment comprises a letterpress printing cylinder, a buffer layer, a supporting layer impact part, a roller core and a friction part. The letterpress printing cylinder, the buffer layer and the supporting layer are all cylindrical and are sequentially nested and fixedly arranged from outside to inside, a heating cavity is formed in the supporting layer, and the roller core is fixedly installed in the heating cavity in the axial direction of the supporting layer and coincides with the axis of the supporting layer. The letterpress printing cylinder is axially and rotatably mounted at the mounting position of the letterpress printing cylinder of the flexographic printing equipment, vibration is generated through impact of the impact plate and the supporting layer and is transmitted to the letterpress printing cylinder through the buffer layer, so that printing ink is quickly separated from the letterpress printing cylinder through slight vibration during printing of the letterpress printing cylinder, the utilization rate of the printing ink is increased, and the printing efficiency is improved. And meanwhile, the printing quality is improved.

The invention relates to a preheating flow of a high-temperature oil slurry pump, and mainly solves the problems that a preheating pipeline and valves are flushed and abraded unavoidably and seriously since a preheating medium commonly contains a catalyst in the prior art, and once high-temperature oil slurry leaks, spontaneous ignition is quite easily caused. By using the preheating flow of the high-temperature oil slurry pump, the preheating medium is introduced from the preheating pipeline (18), passes through a preheating main valve (7) and then is divided into two paths; one path is sequentially connected with a gate valve (8), a restriction orifice plate (10), a root cutoff valve (9) and an oil slurry pump (14), and the other path is sequentially connected with a gate valve (11), a restriction orifice plate (13), a root cutoff valve (12) and an oil slurry pump (15). According to the technical scheme, the problems are better solved. The preheating flow of the high-temperature oil slurry pump can be used for preheating the high-temperature oil slurry pump.

The invention relates to a blast furnace charging bucket material receiving and distribution device. The blast furnace charging bucket material receiving and distribution device comprises a charging bucket center vertical column, a base plate, a base plate ceramic liner plate and a frustum of a regular pyramid; the base plate is fixed to the charging bucket center vertical column; the bottom of the frustum of the regular pyramid is fixed into the base plate, and the periphery of the base plate is provided with a baffle; the base plate ceramic liner plate is fixed to the baffle, and a groove isformed between the baffle and the frustum of the regular pyramid; frustum of the regular pyramid is in a big end down shape, the top surface of the frustum of the regular pyramid is provided with a polygonal ceramic liner plate adapting to the top surface of the frustum of the regular pyramid; the side surfaces of the frustum of the regular pyramid are provided with trapezoidal ceramic liner plates; and the trapezoidal ceramic liner plates and the polygonal ceramic liner plate are fixed to the frustum of the regular pyramid through a plurality of fastening bolts, and a ceramic buckle is fixedto the top of each fastening bolt. The blast furnace charging bucket material receiving and distribution device has the advantages of being resistant to impact during material receiving, good in buffering effect, high in abrasion resistance, uniform in material distribution, small in vulnerable part type during repairing, easy and fast to maintain and the like, the defects that a charging bucketlinear plate is fast in abrasion, short in service life and the like due to the fact that an original structure is uneven in material distribution are effectively overcome, and the blast furnace long-time operation requirement is met.

The invention discloses a method for prefabricating a wrapping joint. Stripping the metal shielding layer and the insulating outer shielding layer; stripping and cutting the main insulating layer andexposing a cable core, wherein the metal shielding layer and the insulating outer shielding layer are wrapped with semiconductors; the main insulating layer is sleeved with a prefabricated stress cone; a cable core of the cable is crimped through a copper connecting pipe; the copper connecting pipe is wrapped with a semiconductive belt; the outer side of the structure is sequentially wrapped withan insulating belt, a semiconductive belt, a copper net, a PVC belt and a waterproof belt, and connection of the cables at the two ends is completed. Electrical connection between cables at the two ends can be achieved, and the electrical performance, stability and reliability of the connector cable are improved.

The invention relates to a pretreatment method for ammonia-containing high hardness wastewater. The method is characterized in that two inlets of a static mixer are respectively connected with a wastewater pipeline and a Na2CO3 solution conveying pipeline, the outlet of the static mixer is connected with a separator, the bottom outlet of the separator is connected with a sludge discharge pipeline,and the top outlet of the separator is connected with the inlet of a settling tank; a first settling trough and a second settling trough are arranged in the settling tank side by side, the bottom outlet of the first settling trough is connected with the sludge discharge pipe, and two inlets of the first settling trough are respectively connected with an alkali lye conveying pipeline and a reagentconveying pipeline; the bottom outlet of the second settling trough is connected with the sludge discharge pipeline; the top outlet of the second settling trough is connected with an ammonia washingtower, and the top inlet of the second settling trough is connected with the discharge port of the ammonia washing tower; the washing liquid inlet of the ammonia washing tower is connected with a first return pipeline, and the first return pipeline is connected with the qualified wastewater discharge port of a stripping system; and the outlet of the stripping system is connected with the first return pipeline and a biochemical treatment device.