36results about How to "Reduce follow-up" patented technology

The invention discloses a method of reducing CO2 to prepare methanoic acid, methanol and methane under hydrothermal conditions by using metal, and relates to the method of transforming pure CO2 gas or CO2 in waste gas into industrial material that is the methanoic acid, the methanol and the methane. The pure CO2 or CO2 in waste gas, water as well as reducer, and a catalyst are put in a hydrothermal reactor; the CO2 is performed through hydrothermal reduction to obtain the methanoic acid, the methanol and the methane under the conditions that the addition quantity of the reducer is 1 to 25 times (by molar ratio) the content of the CO2 which is put in the reaction equipment, the addition quantity of the catalyst is 0 to 10 times (by molar ratio) the quantity of the reducer, the reaction temperature ranges from 200 DEG C to 245 DEG C, the reaction pressure ranges from 5MPa to 25MPa, the pH value ranges from 8 to 14, and the reaction time ranges from 10 minutes to 12 hours. A gaseous phase products that is the methane can be collected through gas-liquid separation, and the methanoic acid and the methanol mixed solution is separated and purified at the same time. The method efficiently transforms the CO2 into organic matters with high additional value in a low consumption way, the CO2 is changed into resource, the technology is simple without the secondary pollution, and worthful economic and social benefits are realized.

The invention relates to a mold core structure that reduces the impact force of the mold cavity. The lower end surface of the left feed insert and the lower end surface of the right feed insert are both auxiliary molding surfaces. The existence of the feed groove is equivalent to the feeding corner, reducing the The impact of the molten metal in the flow channel entering the mold cavity, the feed groove is also a vulnerable part, and the feed groove and auxiliary molding surface are integrated on the feed insert, which greatly reduces the cost of the mold; the curved corner of the hook groove It can effectively reduce the impulsive force of subsequent hot molten metal continuously entering the circular storage tank, thereby reducing the amount of cold metal flushing out of the circular storage. The width of the hook groove is much smaller than the width of the slag feed groove, which can also reduce the The impulsive force of molten metal; loosen the limit screw, the limit ring can slide axially along the sliding sleeve, after adjusting the limit ring to the desired position, tighten the limit screw, the position of the limit ring can be locked. The contact sensor switch cooperates with the limit ring, which can control the stroke of the cylinder piston rod and the side hole insert more accurately.

An automatic printed circuit board (PCB) tool storing and taking device comprises a storage cabinet. A cabinet shell of the storage cabinet is provided with a newly-produced tool inlet, a to-be-polished tool inlet, an empty containing box outlet, a single-box tool storing and taking port and a human-computer interaction operation control panel. A conveying trolley used for conveying batched tools is arranged outside a cabinet body of the storage cabinet. A control system, an empty containing box conveying system, a containing box transferring mechanical arm, a tool box grabbing mechanical arm, a code scanning system, a tool box pushing system and a tool box storing and taking mechanical arm are arranged in the storage cabinet 1. The invention further provides an automatic PCB tool storing and taking method. According to the automatic PCB tool storing and taking device and method, the cost is low, the efficiency is high, and the precision is high.

The invention relates to the field of fruit picking tools, in particular to an apple picking tool capable of cutting fruit stems short. It includes a frame barrel, a shearing mechanism and a handle mechanism. The handle mechanism includes a cylinder whose cylinder body is fixed at the bottom of the frame barrel. The piston rod of the cylinder passes through the bottom of the frame barrel from bottom to top and the piston rod A joystick is fixed horizontally at the end, and a gripper is fixed at the end of the third transmission rod located above the rack barrel. The two grippers are opposite and each gripper has an arc that matches the middle of the apple. Surface structure; the shearing mechanism includes a guide column fixed on the body of the frame barrel, the outer cutting tool includes an outer blade with a concave surface facing the drive motor and is in a branched structure, and the inner cutting tool includes an inner blade in a branched structure. For the blade, the middle part of the inner blade rotates with the positioning shaft, and the position of the cutting edge at the branch of the outer blade is opposite to the position of the cutting edge at the branch of the inner blade. When the apple stem is cut to complete the picking, it is lower than the apple surface, which reduces the follow-up operations of the fruit grower, reduces the workload of the fruit grower, and avoids the occurrence of damage to the surface of other apples by the fruit stem of the apple during transportation.

The invention relates to an automatic book storing and taking device and method. The automatic book storing and taking device comprises a conveying system, storing systems, a sorting system and a control system, wherein the storing systems are arranged at the two sides of the conveying system; the sorting system is used for achieving storing or taking of books to be conveyed between the conveying system and the storing systems; the control system is used for automatically distributing position commands to the sorting system. The automatic book storing and taking device is characterized in that the sorting system comprises a rail unit, a guiding unit used for achieving movement in the x direction, the y direction and the z direction along the rail unit, and a storing and taking unit which is firmly connected to one end of the guiding unit; the storing and taking unit comprises a conveying unit body, a conveying unit arranged below the conveying unit body, and a turnover unit arranged at one end of a storing and taking unit body. By the adoption of the automatic book storing and taking device and method, the book ex-warehouse and in-warehouse efficiency and the book sorting efficiency can be effectively improved, the error rate is decreased, equipment resource waste is reduced, and the positioning precision of key links is improved.

The invention discloses a signal control cable for an intelligent numerical control system, which includes a cable conductor, an inner sheath, a metal sheath and an outer sheath, the inner sheath is extruded on the side surface of the cable conductor, and the metal The sheath is arranged on the side outer surface of the inner sheath, the outer sheath is extruded on the side outer surface of the metal sheath, and the metal sheath is arranged between the inner sheath and the outer sheath , the inside of the inner sheath is provided with a filling layer close to the outer side of the cable conductor; a signal control cable for an intelligent numerical control system of the present invention, so that the signal control cable has multiple protection structures, without affecting the bending operation of the signal control cable Next, improve the safety of the signal control cable, prevent it from breaking during long-term use, and at the same time make its processing operation more convenient, and improve the processing quality of the signal control cable.

The invention discloses a moving target positioning method under the condition of clock deviation and clock drift, which constructs a weighted least squares WLS problem including four unknown quantities of the source node's position and speed, clock deviation and clock drift, and then adopts positive semi-definite The relaxation method transforms the non-convex weighted least squares WLS problem into a convex positive semi-definite programming problem, and then uses the interior point method to solve the convex semi-positive definite programming problem to obtain the global optimal solution; In the case of simultaneous existence and unknown, from the perspective of weighted least squares estimation model estimation theory and convex optimization theory, while realizing the position and velocity estimation of the source node, the joint estimation of clock bias and clock drift is realized, and the positioning accuracy High, low computational complexity, suitable for complex deployment environments.

The present invention relates to a process for producing carboxylic acid anhydrides, in which a carboxylic acid ester, derived from an alcohol and a carboxylic acid, and carbon monoxide containing a small amount of hydrogen are used as raw materials and subjected to a carbonylation reaction in a liquid reaction medium in the presence of a Group VIII B catalyst to produce a carboxylic acid anhydride. The reaction medium comprises the Group VIII B catalyst, an organic halide, the carboxylic acid ester, an alkali metal salt, at least one organic promoter, the carboxylic acid anhydride and the carboxylic acid, wherein the organic promoter is selected from at least one of the following structural forms (I), (II) and (III). According to the process of the present invention, the reaction rate of the carbonylation reaction is increased by the use of the specified organic promoters.

The invention discloses a pre-deoxidation device capable of jetting carbon powder in a tap hole of a converter and a use method of the pre-deoxidation device. The pre-deoxidation device comprises a base and the converter; the converter comprises a converter bottom, a converter body, a converter shell, a converter lining and the tap hole; the base is symmetrically and fixedly connected with two support faceplates; sides, far away from each other, of the two support faceplates are separately provided with a servo motor and a speed reducer through a supporting seat; each of the two speed reducersis rotatably connected with an input shaft and an output shaft; and one end, far away from the corresponding speed reducer, of each input shaft is fixed onto the corresponding servo motor. The pre-deoxidation device disclosed by the invention has the advantages that the carbon powder is blown into the converter through the tap hole in a manner of wind blowing, which is convenient for the carbon powder to be fully contacted with molten steel in the converter, and thus, the carbon powder is prevented from being stacked, so that carbon powder is dissolved in the molten steel more, and the pre-deoxidation effect is enhanced; a desoxidant does not need to be added in such a process, thereby preventing unnecessary impurities from being produced, and reducing unnecessary subsequent operation.

The invention relates to a wafer selection device, which comprises a substrate, wherein two transverse-line-shaped supporting feet are arranged below the substrate; the middle of the substrate is upwards provided with a selection platform; the parts on the left end and the right end of the selection platform, of the substrate, are respectively provided with a finished product conveying groove and a reject conveying groove; a finished product conveying belt is arranged in the finished product conveying groove; the right side driving wheel of the finished product conveying belt is fixedly provided with a first driven wheel by a bearing; a reject conveying belt is arranged in the waste conveying groove; the left side driving wheel of the reject conveying belt is fixedly provided with a second driven wheel by a bearing; the outer side of the finished product conveying groove and the outer side of the reject conveying groove are respectively provided with a finished product receiving hole and a reject receiving hole; a support plate is arranged between the supporting feet and is provided with a drive wheel, a third driven wheel, a fourth driven wheel and a fifth driven wheel; therefore, manpower is greatly saved and cost is greatly reduced.

The invention discloses an anti-collision environment-friendly packing box material, which comprises a first cardboard, a buffer layer and a second cardboard, the second cardboard is fixedly installed on the upper part of the first cardboard, and the buffer layer is arranged on the second cardboard and the second cardboard between the first cardboard and between the second cardboard and the first cardboard, the outer surface of the upper end of the second cardboard is covered with a sticker layer, and the inner sides of the second cardboard and the first cardboard are provided with There is a groove, the first cardboard of the packaging box material is placed on the upper part of the fixed base of the pressing device, and at the same time, a buffer layer is covered on the first cardboard, and the second cardboard is covered on the upper part of the buffer layer; The anti-collision and environment-friendly packaging box material makes the packaging box material have a multi-layer cushioning structure, which improves its anti-collision performance, and at the same time avoids the corner tilting phenomenon of the packaging box material during the preparation and production process, reducing the waste of raw materials.