43 results about "Double teeth" patented technology

The utility model relates to the technical field of municipal road engineering culvert construction, and discloses an assembly type box culvert with a double-tooth cover plate, which comprises an assembly type box culvert body and a cast-in-place bottom plate, the box culvert body is composed of a top plate and two wing side plates, the lower part of the top plate is provided with a trapezoidal plate tooth structure which is used for being connected with side walls and is in bilateral symmetry, and the two wing side plates are arranged on the lower part of the trapezoidal plate tooth structure. Four reserved fixed hoisting bolts used for hoisting construction are arranged on the upper portion of the top plate, polygonal supporting feet which have the vertical supporting effect and are connected with a bottom cast-in-place slab are arranged at the bottoms of the side plates, prefabricated extending steel bars on the inner sides of the supporting feet are connected with cast-in-place concrete, cast-in-place is conducted on the concrete bottom plate before hoisting construction is completed, and longitudinal connection stability is guaranteed. The fabricated box culvert cover plate is provided with the preformed holes and the plate tooth structures, it is guaranteed that the cover plate is evenly stressed in the hoisting process, the cover plate is firmly connected with the two wing side plates, transverse displacement of the side plates is limited, and the box culvert is prevented from being damaged or losing the mechanical property in the construction and service process.

A dental plate for producing a high performance self-tapping screw includes a primary dental plate and a secondary dental plate. A thread rolling part and a chip removal part are arranged on the opposite end surfaces of the main thread plate and the auxiliary thread plate. The main tooth plate and the auxiliary tooth plate are sequentially provided with a collecting part, a shaping part and a cutting block. And thread rolling edges are arranged on the collecting part and the shaping part. And thread rolling edges are arranged on the collecting part and the shaping part. And the shaping part is provided with a chip removal tooth groove. And double tooth sockets are arranged on the binding part. Groove expanding is carried out through the shaping part, and finally the screw is formed through the collecting part. And the cutting block is arranged at the shaping part, so that the cutting capacity of the threads is improved. A chip removal tooth groove is formed in the portion, close to the collecting portion, of the shaping portion, and the chip removal capacity of the threads is improved. And a plurality of double-tooth grooves are formed in the binding part at intervals, so that the tapping performance of the threads is improved. Screws produced by the dental plate can be formed in sequence, the self-tapping performance is high, the yield is high, and the dental plate has high practicability.

The set of inventions relates to medical devices, in particular to surgical retractors and wound retractors for displacing and securing anatomy of a surgical incision in a given position during surgery to provide access to a surgical region of a patient's body. A removable clip for a surgical retractor, made as an L-shaped curved member, includes a base provided with a device for fixation in a surgical retractor and a microsurgical instrument recess, and a pair of teeth for holding an anatomical structure. The toothing is configured as a profiled plate with a working area widening to ensure contact with the anatomical structure, the widening being formed by a raised pad located at least on the inner and / or outer end edge side of the lower end of the plane of the toothing plate. The included angle between each tooth part and the plane of the base is smaller than 90 degrees, and therefore gaps used for passing of microsurgical instruments are formed between the tooth parts. The surgical retractor comprises a frame with a rack carrying a fixed arm and a movable arm, the fixed arm and the movable arm being hingedly connected to a retainer for the detachable clip, where the retainer is configured to receive at least one of the aforementioned detachable clips. A removable clip assembly for a surgical retractor includes at least one central dual tooth removable clip; the at least one peripheral double-tooth detachable clamp is constructed to be capable of accommodating the central double-tooth clamp between the tooth parts of the central double-tooth clamp; and at least one central single-tooth detachable clamp. The use of the invention provides an increased working space and a higher degree of freedom of surgical instrument operation, enabling access to the lateral region of the operated structure during surgery without extending the skin incision.

The utility model provides a double-tooth zipper tooth arranging machine. Two fixing blocks are arranged on a shell; the zipper teeth are conveyed to the position between the two fixing blocks through the conveying assembly, the conveying assembly is provided with a conveying groove channel, and the zipper teeth are conveyed through the conveying groove channel; the driving assembly is arranged on the shell; the tooth clamping assembly is driven by the driving assembly, and zipper teeth are fixed to the material belt through the tooth clamping assembly. The pushing assembly controls one zipper tooth to fall into the conveying channel every time and pushes the zipper tooth to the tooth clamping assembly. The material conveying assembly is matched with the material pushing assembly, one pulling tooth falls off each time, the zipper teeth are clamped and fixed to the material belt through the tooth clamping assembly, and it is avoided that multiple zipper teeth fall off at the same time, installation of the zipper teeth on the material belt is affected, and the tooth clamping assembly and the material pushing assembly move reversely; therefore, it is guaranteed that the pushing assembly and the tooth clamping assembly alternately move, zipper teeth can be conveniently fixed to a material belt, and the efficiency of the tooth arranging machine is improved.

1. Name of the designed product: zipper slider (double teeth). 2. Use of the designed product: accessory for compression bag zipper. 3. Design points of the designed product: in shape. 4. Picture or photo that best shows the design points: perspective view.

The invention relates to the technical field of manure fermentation, in particular to a heating and oxygenation device suitable for aerobic fermentation of solid manure, which comprises a fermentation frame, concave stacking frames are symmetrically hinged to two sides of the center in the fermentation frame, the bottoms of the stacking frames are of mesh structures, and guide frames are obliquely arranged on two sides of a front end frame body of the fermentation frame in a penetrating manner. Corrugated grooves are formed in the front inner wall and the rear inner wall of the fermentation frame, a double-tooth sliding plate with the side section of an inverted convex structure is arranged at the top end in the fermentation frame, and an auxiliary fermentation mechanism is arranged at the bottom end of the double-tooth sliding plate; the deep fermentation process of the feces is effectively accelerated through a cooperative treatment mode of dynamic dehydration, turning and crushing and intermittent oxygen supply, so that the problems of insufficient oxygen supply and insufficient fermentation in the traditional fermentation process are solved, and the aerobic fermentation efficiency of the feces is remarkably improved.

The utility model provides multifunctional intelligent health monitoring equipment capable of changing multiple wearing modes, and relates to the technical field of intelligent health monitoring equipment, the multifunctional intelligent health monitoring equipment comprises monitoring equipment, a fixing shell and a fixing buckle used for clamping a bridle, the fixing shell is welded on the back side of the monitoring equipment, and through the arrangement of the fixing buckle, the bridle is fixed on the back side of the monitoring equipment when the monitoring equipment is worn. A user can select a proper strap type according to own requirements, after the strap is selected, the user only needs to penetrate the strap into the inner side of the fixing buckle between the fixing shell and the monitoring equipment, wearing can be easily completed, and it is ensured that the equipment is stably attached to different parts of the body; adjustment can be conducted according to the type of the selected bridle, the suitability of the clamping space of the fixing buckle is ensured, it is ensured that the bridle can be stably clamped and fixed through the fixing buckle, the matching structure between the fixing shell and the fixing buckle is flexible in design and suitable for the bridles with different widths, the wearing mode is more diversified, and the wearing effect is better. And the selection diversity and comfort of the user are improved.

The invention discloses a lightweight helical-tooth double-tooth-difference transmission rapid telescopic pallet fork device, and belongs to the technical field of intelligent logistics equipment. A rolling bevel gear of the light-weight middle fork is synchronously meshed with a left helical rack and a right helical rack of the bottom fork and a left helical rack and a right helical rack of the light-weight front fork at the same time to form helical-tooth double-tooth-difference transmission, the light-weight front fork and the light-weight middle fork are driven to stretch out and draw back stably at high speed and high acceleration at double differential speed, and shifting rod mechanisms driven by motors are arranged at the two ends of the light-weight front fork. A synchronous belt rack of the driving assembly is meshed with a transmission rack at the bottom of the light-weight middle fork to drive the light-weight middle fork to move, and power is provided for the light-weight helical-tooth double-tooth-difference rapid telescopic pallet fork device. The telescopic movement of the light-weight middle fork and the light-weight front fork and the goods storing and taking process are achieved in a rolling guide rail and double-tooth-difference transmission mode. The device has the characteristics of simple structure, high-speed and high-acceleration response, small start-stop impact, light weight, stability, reliability, high use flexibility and the like.

1. The name of this design product: double-tooth comb. 2. Purpose of the product of this design: a tool for combing hair. 3. The key point of the design of this product lies in its shape. 4. The picture or photo that best illustrates the design points: three-dimensional picture.

1. Name of the designed product: Comb (double teeth). 2. Use of the designed product: The designed product is used for combing hair. 3. Design points of the designed product: in shape. 4. Picture or photo best indicating the design points: perspective view.

The utility model belongs to the technical field of articular ligament repair, and particularly relates to a positioning guide device for acromioclavicular joint reduction ligament repair, which comprises a double-tooth clamp device and a guide sleeve, the double-tooth clamp device comprises a first clamp and a second clamp, the tails of the first clamp and the second clamp are provided with latches, and the guide sleeve is sleeved on the first clamp and the second clamp. The first clamp head is provided with upper teeth, the upper teeth are fixedly connected with a double-rail arc-shaped sliding rod, the second clamp head is provided with lower teeth, the lower teeth are fixedly connected with a concave arc column, the joint of the concave arc column and the lower teeth is provided with positioning teeth, the far end of the concave arc column is provided with a positioning bent column, and the guide sleeve comprises an outer guide cylinder. The acromioclavicular joint restoration device is convenient for the proceeding of an acromioclavicular joint restoration operation, not only can the acromioclavicular joint be pressurized and restored through the double-tooth clamp device, but also the acromioclavicular joint restoration device can be installed in a guiding manner, and the damage caused by too deep drilling of a kirschner wire or a hollow drill bit to subclavian nerve blood vessels at the lower edge of a coracoid process is effectively avoided.

The invention discloses a bending-shearing combined corn straw cutting device test bed and a test method, and relates to the technical field of agricultural machinery, the bending-shearing combined corn straw cutting device test bed comprises a cutting device rack, a power input device, a cutting device and a stalk conveying device, the power input device is fixed at the rear part of the cutting device rack, and the cutting device is fixed above the cutting device rack; the stalk conveying device is fixed to the front portion of the cutting device rack, the single-tooth reel tooth is fixed to the upper portion of the slotting conveying chain plate through a reel tooth mounting plate, the double-tooth reel tooth is fixed to the middle of the slotting conveying chain plate through a reel tooth mounting plate, the upper cutter is fixed to the lower portion of the outer side of the upper special-shaped chain set, and the stalk conveying device, the single-tooth reel tooth and the double-tooth reel tooth are installed in an offset mode in the vertical direction. The cutting device can conveniently achieve a bending-shearing type stalk cutting mode, the damping hinges are symmetrically distributed on the two sides of the upper portion of the base, the inclination angle of the header in actual operation can be simulated by adjusting the angles of the damping hinges, the process time needed in the header design, production and test process can be remarkably shortened, the research and development efficiency is effectively improved, and the cost is reduced.

The utility model discloses a hinge for a door, which comprises a sealing plate, a first mounting seat and a second mounting seat, the first mounting seat and the second mounting seat are respectively mounted on a door frame and a door leaf, the first mounting seat is rotatably connected with a single-tooth hinge, the second mounting seat is rotatably connected with a double-tooth hinge, and the single-tooth hinge and the double-tooth hinge are mutually hinged. The multiple sealing plates cover the surfaces of the first mounting base and the second mounting base, the first mounting base and the second mounting base are each provided with a through mounting hole used for allowing a fastener fixed to a door frame or a door leaf to penetrate through, the first mounting base and the second mounting base are each provided with an adsorption groove, and the adsorption grooves are used for adsorbing the fastener. And a magnetic attraction piece is embedded in the attraction groove, and the magnetic attraction piece can attract and fix the sealing plate, so that the sealing plate covers the outer side of the mounting hole, and the surfaces of the first mounting seat and the second mounting seat are smooth surfaces.

The utility model discloses an efficient emulsifying and homogenizing head which comprises a homogenizing device, materials are discharged from a homogenizing outlet after being ground by the homogenizing device, a material suction device is arranged at a material inlet of a homogenizing inlet, the material suction device can suck the materials into the homogenizing inlet at a high speed, and the materials have high flow speed under the action of the material suction device, so that the material processing efficiency is improved; the material suction device comprises a material suction shaft and a plurality of material suction paddles, the material suction device is simple in structure and can efficiently suck materials, the material circulation speed of the homogenizing device is increased, and the machining efficiency of the homogenizing head is improved; the outer rotating tooth layer is respectively tangent to the outer fixed tooth layer and the inner fixed tooth layer, the inner rotating tooth layer is tangent to the inner fixed tooth layer, and the double tooth layers are tangent, so that the grinding precision of the homogenizing head is improved, and the emulsification fineness is improved; the height of the outer fixed tooth layer is equal to that of the homogenizing rotor, and the side face of the homogenizing rotor is fully surrounded by the side face of the homogenizing stator, so that the grinding precision of the homogenizing head is improved, and the emulsification fineness is improved.

A slide fastener and a garment are disclosed, including a main member unit (100) having a main member tape (110), and a main member double teeth (120) provided at intervals on the main member tape (110) and formed with a plurality of double tooth cavities (130) and a main slide portion (140) constituting a slide rail, and a sub-member unit (200) having a sub-member tape (210) and sub-member double teeth (220) provided at intervals on the sub-member tape (210). The sub-member double teeth (220) include a tooth portion (223), a connecting portion (222), and a sub-member base (221). The sub-member base (221) is connected to the sub-member tape (210). The tooth portion (223) is fitted into the double tooth cavity (130), and the connecting portion (222) is fitted into the main slide portion (140). Thereby, the tooth portion (223) slides along the double tooth cavities (130) arranged in sequence, and the sub-member base (221) covers the side surface of the arm portion (122b) on the side of the main slide portion (140). The left side surface of the sub-member base (221) is connected to slide on the right side surface of the main member double teeth (120). By being connected to the sub-member base (221) on the right side surface of the main member double teeth (120), the sub-member base (221) rubs against the main member double teeth (120) instead of the edge of the fabric, greatly reducing the total frictional force, effectively improving the overall smoothness, and reducing the frictional noise.

The invention discloses an FRP-wrapped cement-based composite grouting sleeve of a sandwich structure and an application method of the FRP-wrapped cement-based composite grouting sleeve. The FRP-wrapped cement-based composite grouting sleeve is composed of a tooth-shaped FRP sleeve, a double-tooth-surface UHPC pipe, a cement-based composite grouting material and bonding resin. The tooth-shaped FRP sleeve is arranged on the outermost side of the grouting sleeve, and the double-tooth-face UHPC pipe is located in the middle of the grouting sleeve. And the tooth-shaped FRP sleeve is bonded with the double-tooth-surface UHPC pipe through the bonding resin. The reinforcing steel bar is inserted into the double-tooth-surface UHPC pipe and is connected with the double-tooth-surface UHPC pipe through the cement-based composite material grouting material. According to the FRP-wrapped cement-based composite grouting sleeve of the sandwich structure and the application method of the FRP-wrapped cement-based composite grouting sleeve, through the tooth-shaped structures arranged outside the FRP sleeve and the UHPC pipe, enough binding power can be provided, and the steel bars are prevented from being pulled out of a cement-based composite grouting material. By utilizing the characteristics of multipoint cracking and high ductility of the cement-based composite material, the local high stress is reduced, the local crushing damage of the cement matrix caused by overlarge bonding stress is avoided, the application range is wide, and the standardization is high.

The utility model relates to the technical field of threaded pipes, in particular to a heat exchange threaded pipe which comprises a pipe body, a plurality of annularly-distributed spiral protruding rib structures are formed on the inner wall of the pipe body, each protruding rib structure is composed of two tooth-shaped structures, and the two tooth-shaped structures are in transition connection through an arc-shaped face. A plurality of annularly-distributed spiral inwards-concave structures are formed in the corresponding positions of the outer wall of the pipe body. According to the threaded pipe, the convex rib structure is arranged in the threaded pipe and composed of the two tooth-shaped structures, the inner concave structure is formed in the corresponding position of the outer wall of the pipe body, the inner surface area and the outer surface area of the pipe are increased at the same time, and the heat exchange area of the threaded pipe is remarkably increased no matter whether fluid flows through the inner wall of the pipe or the outer wall of the pipe; the turbulent motion is further enhanced, and the fluid is uniformly mixed in the pipe, so that the heat exchange efficiency is improved.

The utility model relates to the technical field of double-tooth V-shaped belts, and provides a stretch-proof double-tooth V-shaped belt which comprises two abrasion-resistant layers and a supporting layer, the supporting layer is located between the two abrasion-resistant layers, the sections of the two abrasion-resistant layers are of a tooth-shaped structure, the supporting layer comprises a stretch-proof layer and a plurality of stretch-proof cores, the stretch-proof layer is located in the middle of the supporting layer, and the stretch-proof cores are located in the middle of the supporting layer. The cross section of each tensile core is of a wavy structure, the multiple tensile cores are linearly arranged along the supporting layer to form two tensile core sets, and the two tensile core sets are located on the two sides of the tensile layer respectively. By means of the technical scheme, the problems that in the prior art, due to the long-term twisting and stretching effect, the V-shaped belt is stretched and lengthened, the V-shaped belt is loosened, and the power transmission effect of the V-shaped belt is reduced are solved.

The present invention provides a stator punching sheet, a motor stator, and a motor, wherein the stator punching sheet includes a plurality of punching sheet units, each punching sheet unit includes an inner tooth portion, an outer tooth portion, and a yoke portion connected between the inner tooth portion and the outer tooth portion, and the yoke portions respectively provided by two adjacent punching sheet units are connected as a whole through a yoke portion connecting bridge, and the stator punching sheet has a linear arrangement state and a circular arrangement state, when the stator punching sheet is in the linear arrangement state, there is an overlapping portion between the two adjacent outer tooth portions in the first direction, and when the stator punching sheet is in the circular arrangement state, an outer notch of an outer tooth slot is formed between the two adjacent outer tooth portions, and the first direction is the direction from the outer tooth portion to the inner tooth portion in the linear arrangement state. The present invention can make the width of the outer tooth portion larger, so that the double-tooth stator punching sheet can adopt a straight strip manufacturing method, ensuring that the width of the outer notch of the outer tooth slot of the stator punching sheet after the stator punching sheet is circular can be relatively small, thereby ensuring the motor performance.

This invention relates to the field of tooth surface grinding technology for aviation damper shafts and limit gear shafts, specifically to a flexible internal and external gear double tooth surface grinding device and processing method. The device includes a manual reversing mechanism, a flexible double-sided force-bearing mechanism, and a motor-driven reciprocating mechanism. This invention has high processing efficiency, good precision control, and stable and reliable quality, and can meet the high-precision processing requirements of non-deformable joint fork lugs with rotating structures in mass production.

The invention belongs to the technical field of medical equipment, particularly relates to a mechanical vibration type auxiliary sputum excretion device and method, and provides the following scheme aiming at the problem that an existing mechanical vibration type auxiliary sputum excretion device is poor in adaptability: the mechanical vibration type auxiliary sputum excretion device comprises a box body, a back cushion is arranged outside the box body, and a chest cushion is arranged outside the back cushion; the back cushion and the chest cushion are arranged on the back side of the chest cushion, the opposite sides of the back cushion and the chest cushion are each provided with a first rough-side hook-and-loop fastener, the side, close to the back cushion, of the box body is provided with two symmetrical first smooth-side hook-and-loop fasteners, the side, opposite to the back cushion, of the box body is attached, and the side, away from the back cushion, of the box body is provided with an observation window. According to the mechanical vibration type auxiliary sputum excretion device and method disclosed by the invention, the vibration frequency of the device on the thorax of a patient can be changed by switching among a single-tooth rotating wheel, a double-tooth rotating wheel and a three-tooth rotating wheel, so that the suitability of the device and the patient is improved; and the device can provide good treatment effect and experience when facing patients with different vibration tolerance.

The invention provides a combined structure for synchronously unloading trapped oil of a single tooth and double teeth of a gear pump, two stepped unloading grooves are formed in the inner side surfaces of two end plates of the combined structure by taking a vertical surface as a symmetric surface, and the stepped unloading grooves are formed by recessing the inner side surfaces of the end plates along the X-axis direction; each step unloading groove is in a mirror symmetry shape with the flow direction face as the symmetry face. Each step unloading groove comprises a rectangular deep groove and a rectangular shallow groove which are communicated with each other, and the depth of the rectangular shallow groove is smaller than that of the rectangular deep groove; in the same step unloading groove, the rectangular shallow groove is located in the side, facing the vertical face, of the rectangular deep groove. According to the gear pump, the pressure amplitude and the pressure peak value of a single-tooth oil trapping area and a double-tooth oil trapping area can be fully reduced, the maximum oil trapping pressure of the single tooth is reduced to 35.2%, and the maximum oil trapping pressure of the double teeth is reduced to 45.2%, so that the oil trapping phenomenon of the gear pump is comprehensively and fully relieved, the input power of the gear pump can be reduced by about 5.4%, and the output flow is increased.

1. Name of the product in this design: Zipper (double teeth). 2. Application of this design: for use in zippers on clothing, bags, etc. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D rendering 1.

The utility model relates to the technical field of strength detection, in particular to a duplex gear static torsional strength detection device which comprises a base, a gear sleeve, a mandrel, a torque wrench and a positioning sliding block, the gear sleeve is detachably installed on the base, a gear sleeve ring matched with a large gear or a small gear in duplex gears is arranged on the gear sleeve, and the mandrel is detachably installed on the base. The positioning sliding block is installed on the base in a sliding mode, one end of the mandrel is inserted into the duplex gear, the other end of the mandrel penetrates out of the positioning sliding block and is sleeved with the mandrel sleeve, and the torque wrench is installed on the mandrel sleeve. According to the utility model, the torque is applied to the top core shaft sleeve to confirm the maximum static torsion strength of a single tooth or multiple teeth of a part, so that the static torsion strength of a specified single tooth or multiple teeth of a duplex tooth can be visually detected, and the detection result is more reliable; in addition, switching between measurement of the strength of the large tooth of the duplex tooth and measurement of the strength of the small tooth of the duplex tooth can be achieved by replacing the tooth sleeve on the base.

The utility model provides a synchronous belt with a conductive property, which belongs to the technical field of synchronous belts, and comprises a double-tooth synchronous belt, the device comprises two rotary connection frames, the two ends of the two rotary connection frames are both rotationally connected with rotary shafts, the outer walls of the two rotary shafts are both fixedly connected with double-tooth synchronous wheels, the peripheral walls of the double-tooth synchronous wheels and the inner side of a double-tooth synchronous belt are both fixedly connected with two sets of transmission teeth, and the two double-tooth synchronous wheels are in transmission connection through the double-tooth synchronous belt. According to the utility model, the conductive rubber and the double-tooth synchronous belt can be conveniently mounted, fixed, detached and separated, so that the conductive rubber can be conveniently replaced and maintained, the maintainability of the synchronous belt with the conductive property is improved, and the tension degree and the transmission operation condition of the double-tooth synchronous belt can be monitored and alarmed; and the double-tooth synchronous belt is maintained in time, and the transmission operation stability of the double-tooth synchronous belt is guaranteed.

The present invention discloses a double-toothed fixed blade of a reciprocating razor, wherein the A-type fixed blade teeth and the B-type fixed blade teeth are staggered and arranged, which is conducive to combing long hair and improving the efficiency of long hair entering the hair feed groove, thereby improving the cutting efficiency of relatively long body hair; the present invention also discloses a double-toothed fixed blade structure of a reciprocating razor, wherein an inwardly concave escape groove is provided on a fixed frame, corresponding to the tooth bodies of a plurality of A-type fixed blade teeth and the tooth bodies and retaining edges of the B-type fixed blade teeth, the corresponding tooth bodies are supported from below by the retaining edges, a movable cavity for the movable blade to move within is provided between the fixed blade and the fixed frame, a notch is formed between two adjacent B-type fixed blade teeth at the bottom of the A-type fixed blade teeth, spanning from one hair feed groove to the other hair feed groove, which can effectively prevent hair from being pressed crooked or pressed down and unable to enter the hair feed groove; the present invention also discloses a method for manufacturing the double-toothed fixed blade structure of a reciprocating razor, which is simple in process, and the manufactured fixed blade structure is conducive to shaving relatively long body hair.

The invention provides a self-rotation type double-tooth variable cross-section scroll plate exhaust hole structure and an optimization method thereof. The self-rotation type scroll plate comprises a driving scroll plate and a driven scroll plate, the two scroll plates are arranged oppositely, the distance between the circle centers of the two scroll plates is L, a plurality of eccentric small shafts are arranged between the two scroll plates, and the driving scroll plate drives the driven scroll plate to rotate through the eccentric small shafts after rotating. And determining the maximum allowable opening area of the exhaust hole according to the autorotation process, and taking the area as the shape constraint condition of the exhaust hole. Performing parametric modeling on the exhaust hole, establishing a mathematical model between exhaust hole parameters and pressure pulsation and flow pulsation intensity coefficients, performing collaborative optimization on the exhaust hole parameters through a multi-target optimization method by taking the pressure pulsation and flow pulsation intensity coefficients as targets, and obtaining a Pareto frontier solution set; and selecting an optimization result in the Pareto frontier solution set according to an actual demand.

The invention provides a forming system for treating a double-tooth adjacent surface hole and an application method thereof.The forming system comprises a forming piece assembly and a forming clamp assembly used in cooperation with the forming piece assembly, a specific forming system of a double-forming-piece synchronous pressurizing structure is formed, and one-time precise repairing of the double-tooth adjacent surface hole is achieved; the technical problem that an existing adjacent hole repairing technology is low in diagnosis and treatment efficiency is solved.

The invention provides a preparation method of a bidentate chelating fluorine removal agent, which comprises the following steps: step 1, dropwise adding an inorganic alkali solution into an AlCl3 solution or an FeCl3 solution, and carrying out pre-hydrolysis reaction to obtain a pre-hydrolyzed aluminum solution or iron solution; 2, mixing silanetriol with the pre-hydrolyzed aluminum solution or iron solution obtained in the step 1 to obtain a mixed stock solution, 3, dropwise adding an inorganic alkali solution into the mixed stock solution obtained in the step 2, and carrying out an alkalization reaction to obtain an alkalized solution; and 4, aging the alkalized solution obtained in the step 3 to obtain the bidentate chelating fluorine removal agent. The prepared double-tooth chelating fluorine removal agent can effectively solve the problems that in the prior art, a fluorine removal agent is poor in selective removal capacity for fluoride in fluorine-containing sewage, poor in floc settling performance, large in dosage, residual in fluorine removal agent and the like.