69results about How to "Reduce the temperature difference between upper and lower" patented technology

A Manufacturing method for burning light burning magnesite powder by a tunnel kiln comprises following steps: a. optionally selecting one of magnesite flotation ore concentrate, magnesite flotation tailings, magnesite ore crushing or magnesite shaft kiln dust removing powder, producing into briquette; b. drying the briquette obtained in step a in a drier; c. the sum of the longitudinal passage sectional area between the piled bricks conforming that: (1) the ratio of the sum of the longitudinal passage sectional area between the piled bricks and the sectional area of the kiln chamber is 30-40:100; (2) the ratio of the sum of the sectional area of the external passage formed by a piled brick, a kiln wall and a kiln top and the sum of the sectional area of the longitudinal interior passage between piled bricks is 1.1-1.4; d. pushing the kiln car loading briquettes into the tunnel kiln, wherein the kiln inlet temperature is 100-200 DEG C, holding for 30-60 minutes at 850-900 DEG C and the kiln outlet temperature is 40-200 DEG C; e, after kiln discharge, smashing the briquette obtained in step d into particles with the diameter less than 0.074mm.

The invention discloses a heat-conductive and energy-saving refractory brick used for a fire path wall in a carbon roasting furnace and a preparation method thereof. The heat-conductive and energy-saving refractory brick is composed of an aggregate, a mixed fine powder and an additive according to the mass ratio of 30:30-35:5-10. The aggregate is prepared by mixing three or more components of mullite, andalusite, silicon carbide, three-grade high-aluminum bauxite and high-aluminum corundum granules and is 0.1-5 mm in granular size; the mixed fine powder is prepared by mixing four or more components of special-grade high-aluminum bauxite, sillimanite, silicon carbide, brown fused alumina, aluminum oxide, andalusite, high-quality combined clay and metal silicon fine powder and is less than 0.088 mm in granular size; and the additive is calcium lignosulphonate powder. The heat-conductive and energy-saving refractory brick is high in thermal shock stability and low in high-temperature creep rate, is high in refractoriness under load and is high in high-temperature bending strength.

The invention relates to a longitudinal-circulation autoclave provided with an external thermal-cold cycling device. The longitudinal-circulation autoclave comprises a main tank body, air suction connection pipelines, air blowing connection pipelines and the thermal-cold cycling device, wherein the main tank body is connected with airflow distributors through the air suction connection pipelines and the air blowing connection pipelines respectively; the thermal-cold cycling device is located outside the main tank body. According to the autoclave with the structure, the complicated heating, cooling and circulating device is moved out of the main tank body, and loading rate is remarkably increased; the circulation path is shortened by means of a new longitudinal-circulation mode, and under cooperation with the airflow distributors, the temperature distribution in the tank is uniform, vertical temperature difference is reduced, and front and back temperature difference is almost zero; with adoption of an electromagnetic heating mode with higher efficiency, not only is energy saved, but also efficiency is remarkably improved; the external thermal-cold cycling device can be wholly replaced and dismounted for maintenance due to presence of spare parts, and the condition of production delay caused by equipment failure maintenance is avoided.

The invention discloses an insulated conveying system. The insulated conveying system comprises a conveying component, an upper heating device and a lower heating device, wherein an insulated space is formed between the upper heating device and the lower heating device; and the conveying component penetrates through the insulated space. The insulated conveying system disclosed by the invention has the beneficial effects that by adoption of the technical scheme, active heating is carried out from top to bottom simultaneously, so that materials on the conveying component can be kept at a certain temperature; and due to simultaneous heating from top to bottom, the heating effect is better; and the production quality of products is guaranteed.

The present invention relates to a numerical control setting machine. The numerical control setting machine comprises a setting frame, an oven and setting mechanisms, and also comprises moving seats and a driving assembly, wherein the moving seats are mounted on the setting frame through a slideway; the setting mechanisms are mounted on the corresponding moving seats, and the setting mechanisms and the oven are located on a same side of the setting frame; the driving assembly drives the moving seats to move back and forth along the setting frame; and the oven is at least provided with an inletfor the setting mechanisms to enter or leave the oven. The driving assembly controls multiple groups of setting assemblies to enter or leave the oven, so that the number of fabrics subjected to setting by drying in machine operation is increased and the production efficiency is improved; and the front and rear groups of setting assemblies enter or leave the oven alternately to finish setting by drying and replacement of the fabrics alternately, so that the utilization rate of the oven is improved, the width and the volume of the oven are reduced, and the energy consumption of the oven is reduced. The numerical control setting machine is simple in structure, convenient to operate, small in overall volume, low in energy consumption and small in setting temperature difference, and meets thesetting requirement of high quality.

In this exchange ventilation system 1 where the low-temperature air SA is supplied into an air conditioning space, and the heated air raised by being heated in the air conditioning space is exhausted EA to perform the ventilation, a plurality of guide fins 30 are mounted on an air supply hole for the low temperature air SA to give the swirling component to the low temperature air SA blown out into the air conditioning space, the plurality of guide fins are radially mounted around a central axis of the air supply hole, and respectively inclined to a plane orthogonal to the central axis of the air supply hole at the same angle, and a cylindrical inner wall face applying the central axis of the air supply hole as its central axis, is formed around the plurality of guide fins.

The invention relates to a siphon type dewatering wiper for a hot plate blank, and belongs to the technical field of hot rolling equipment in the metallurgical industry. According to the technical scheme, the siphon type dewatering wiper comprises a fixing support (1), hoisting connecting rods (3), siphon dewatering rollers (4), water collecting tanks (5) and a hot rolling conveying roller way (6), wherein the multiple siphon dewatering rollers (4) arranged side by side are arranged above the hot rolling conveying roller way (6) in the running direction of the hot plate blank, the two ends ofthe siphon dewatering rollers (4) are rotationally connected to the fixing support (1) through hoisting connecting rods (3), the water collecting tanks (5) are arranged below the two ends of the siphon dewatering rollers (4), the roller bodies of the siphon dewatering rollers (4) are concave roller with the thin middles and the two thick ends, a plurality of identical grooves (9) are engraved in the surface of the roller bodies in the axial direction, and each groove (9) is of a structure with the narrow middle and the two wide ends. The siphon type dewatering wiper has the beneficial effectsthat residual water on the surface of the hot plate blank passing through a dephosphorization machine or a rolling mill can be effectively and rapidly removed, the temperature difference between the upper portion and the lower portion of the hot plate blank is reduced, and head warping or buckling of the hot plate blank is prevented.

The invention discloses a novel blown aluminum uniform temperature plate. The novel blown aluminum uniform temperature plate comprises a shell; one side of the shell is a heat source end; the internalof the shell is negative pressure and injected with working mediums; multiple drainage channels are formed in the shell; the drainage channels are aslant arranged, and the inclined directions are inclined to the heat source end from high to low; the condensed working mediums flow to the heat source end along the drainage channels; and the evaporated working mediums are far away from the heat source end along the drainage channels. In the novel blown aluminum uniform temperature plate, through arrangement of the drainage channels inclined to the heat source end from high to low, the condensedworking mediums are guided to the heat source end, and the evaporated working mediums are guided away from the heat source end, so that the left-right temperature difference of the shell is lowered, and the heat dissipation performance is improved; and meanwhile, the condensed working mediums are preferably fed to the upper part of the side, near the heat source end, in the shell, so that the heatof an upper heat source is taken away, the temperature of the upper heat source is effectively lowered, the up-down temperature difference of the shell is reduced, and the heat dissipation performance is improved.

The invention discloses a granular bed filtering dust removal system. The granular bed filtering dust removal system comprises at least one main granular bed filtering dust collector and a secondary granular bed filtering dust collector, a dust-containing air main pipe, a clean air main pipe and a blowback air main pipe, wherein the dust-containing air main pipe conveys dust-containing air into the main granular bed filtering dust collector, the clean air main pipe outputs clean air filtered by the main granular bed filtering dust collector, the bottom of the main granular bed filtering dust collector is provided with a main ash hopper, the blowback air main pipe conveys blowback air into the main granular bed filtering dust collector, the secondary granular bed filtering dust collector is provided with a dust-containing air introduction pipe used forcommunicating the secondary granular bed filtering dust collector with the upper portion of the main ash hopper, the dust-containing air introduction pipe conveys powder-containing air into the secondary granular bed filtering dust collector, the clean air main pipe outputs clean air filtered by the secondary granular bed filtering dust collector, the blowback air main pipe conveys blowback air into the secondary granular bed filtering dust collector, and the bottom of the secondary granular bed filtering dust collector is provided with a secondary ash hopper. The granular bed filtering dust removal system has the advantage that the fine dust that is difficult to settle can be efficiently and reliably removed.

The invention relates to a high-precision annealing furnace, which consists of a counter celling structure (1), a side wall curved sealing structure (4) and a bottom refractory brick (6), wherein the counter celling structure (1) comprises a curved sealing structure (2); a heating device (8) is arranged at the bottom of the annealing furnace to raise the bottom temperature of the annealing furnace; a thermoelectric pair (11) is arranged on the top of the annealing furnace; a glass block (3) and the like are placed on a mesh belt bracket (9) in the middle of the annealing furnace; and the bottom of the annealing furnace is provided with a mesh belt towing launch (7). Due to the adoption of the high-precision annealing furnace, the height of a kiln is reduced, and the temperature difference between the upper and lower parts of a hearth is reduced; the radiating uniformity of a side wall is enhanced; temperature difference caused by air leakage at the bottom of the furnace is eliminated; and the temperature difference between the upper and lower parts of the hearth is +/-2 DEG C, the temperature difference between the left and right parts of the hearth is +/-1 DEG C, and a remarkable energy-saving effect is achieved.

The invention relates to a novel kiln, in particular to a continuous kiln which is characterized in that the continuous kiln at least consists of a cylindrical kiln body and a slideway kiln car sliding mainly by gravity in the kiln body; materials are loaded on the slideway kiln car and slide with the slideway kiln car from the top end to the tail end of the kiln; the cylindrical kiln body can be a straight cylinder, a bent cylinder or an equal-diameter spiral cylinder. The slideway kiln car is plate-shaped or has the structure of a casket, a crucible or a tubular container. Through holes sealed by a thin wall refractory material and blind holes are distributed on the walls of the slideway kiln car with various shapes.

The invention discloses an energy saving kiln for preventing ash contamination and with low heat storage. The kiln comprises a kiln door, a kiln crown and side walls, and is characterized in that light insulation cottons are arranged on the kiln door, the kiln crown and the side walls; heavy refractory insulation plates are arranged on a fire seeing surface in the kiln; the refractory insulation plates adopt hollow structures, and are formed by splicing insulation plates; heavy refractory guide rails are arranged between upper and lower adjacent insulation plates; the insulation plates are inserted in chucks on the upper and lower sides of the refractory guide rails; and refractory fixed pieces connected with a kiln body are arranged at the middle parts of the refractory guide rails. The kiln crown, the kiln walls and the kiln door adopt all-cotton structures; the heavy refractory insulation plates are added on the internal fire seeing surface and the tabletop of a kiln car insulated by light materials at the bottom for preventing direct scouring of the wall fiber cottons by flame. Thus, even if fibers are pulverized and loosened to fall, due to stop by the refractory plates, products cannot be polluted. The kiln saves the energy, and solves the ash contamination problem.

Disclosed is an air conditioner for a vehicle, the air conditioner having an improved guide structure capable of increasing an air volume by preventing a collision between air flowing through an upper passage and air flowing through a lower passage. The air conditioner for a vehicle comprises: an air conditioning case having an air passage formed therein and an air outlet which includes a defrost vent and a face vent; and a heat exchanger for cooling and a heat exchanger for heating, which are provided in the air passage of the air conditioning case. The air conditioner for the vehicle further comprises: a temperature door arranged between the heat exchanger for cooling and the heat exchanger for heating in order to adjust the degree to which cold air, which has passed through the heat exchanger for cooling, is heated by the heat exchanger for heating; a cold air passage through which cold air that has passed through the heat exchanger for cooling bypasses the heat exchanger for heating; a warm air passage through which cold air that has passed through the heat exchanger for cooling passes through the heat exchanger for heating; a cold air guide unit for guiding the cold air downstream of the heat exchanger for cooling; and a warm air guide unit for guiding the warm air downstream of the heat exchanger for heating.