116 results about "Narrow mouth" patented technology

The invention relates to a device for measuring the three-phase permeability of supercritical CO2 emulsion by a steady-state flow method. The device comprises a one-dimensional rock core model and a computed tomography (CT) scanner, wherein an inlet end of the one-dimensional rock core model is connected an emulsion generator and a crude oil injection device which are connected with each other in parallel; an inlet end of the emulsion generator is connected with a CO2 gas injection device and a surface active agent injection device which are connected with each other in parallel; an outlet end of the one-dimensional rock core model is connected with a gas source bottle and a liquid-containing narrow-mouth bottle which are connected with each other in parallel; a gas outlet pipe of the liquid-containing narrow-mouth bottle is sequentially connected with a drying pipe and a flow meter. According to the method for measuring the three-phase permeability of the supercritical CO2 emulsion, the three-phase fluid saturation of the supercritical CO2 emulsion is accurately obtained by a CT double-energy synchronous scanning method, and the relevant data measured by the experiment is substituted into a Darcy-Weisbach formula, so that the three-phase relative permeability of the supercritical CO2 emulsion under the different degrees of saturation can be obtained; the method is also used for measuring CO2 foam flooding two-phase permeability. The device and the method are small in limitation, are capable of reasonably approaching the experimental real value, and are simple in operation and accurate in measurement.

A pleated neckdown bag for lining a receptacle is disclosed wherein the bag is made of a flexible plastic film. The disclosed bag has one or more pleat portions (18) fixed at points around the mouth portion (26) of the bag to reduce the circumference of the mouth portion relative to the circumference of the body portion (14). The reduced circumference mouth portion of the neckdown bag can be fitted over a supporting receptacle. The top portion (12) of the bag is thereby more securely held to the support, and the mouth portion is more securely held in an open state, since the narrowed mouth portion of the bag can better engage a support such as the rim of a waste bin. Bag embodiments having flat and flat rectangular constructions, convenient for manufacture, storage, shipping, and dispensing, are also disclosed. Also disclosed is a tabbed neckdown bag embodiment with a tab (52) modifying means to advantageously modify stress and strain at and near the conjunction of a seam and mouth portion of a neckdown bag. The tab is intended to reduce or eliminate the possibility of tearing of the bag at or near a seam in the neighborhood of the tab. The tab projects from a tab base (58), defined between first (54) and second (56) reentrant arcuate portions of a mouth edge (36), and a top seam portion (20) of the bag extends across the tab base and into the tab. Also disclosed is a tab embodiment, usable in a pleated neckdown bag having a flat construction, where inclusion of the tab does not limit certain advantages pertaining to a flat bag construction.

The present invention provides a defoamer which can effectively defoam no matter nature, state and stacking state of foams, and a defoaming method thereof. The defoamer comprises the following components: a rotation driving mechanism (4a), a hollow-structure main defoaming blade (20) which is equipped on a rotating shaft (4) of the rotation driving mechanism (4a), and a suction opening. The suction opening is provided with a narrow-mouth side opening (22) which sucks into bubbles and a wide-mouth side opening (23) that supplies bubbles to the main defoaming blade (20). The periphery of the wide-mouth side opening (23) is connected with the main defoaming blade (20). The section area of the suction opening narrows in a direction of departing from the main defoaming blade (20). The main defoaming blade (20) is provided with an inflow opening (7) and a discharging opening (8), wherein, the front end of the inflow opening (7) in advancing direction causes the bubbles to flow into the hollow structure in rotation. The area of the discharging opening (8) is smaller than that of the inflow opening (7). Furthermore the bubbles are discharged out of the hollow structure at a back position in the advancing direction, which is closer to the centrifugal direction.

A double-ferrule type pipe joint comprises a joint, a pipe connected with the joint in a fitted manner, a nut for compactly connecting the joint with the pipe, a front ferrule and a rear ferrule, a wide mouth end of the nut being connected with the joint, and a narrow mouth end of the nut being adaptive to the diameter of the pipe. The double-ferrule type pipe joint is characterized in that: both of the front ferrule and the rear ferrule are metal parts; an external ring surface of a hollow annular convex stage of the front ferrule compactly fits with a joint chute, a front end cutting edge of an internal ring surface of the hollow annular convex stage penetrates into the pipe body, and an external ring step surface and an external ring horizontal surface of the front ferrule seal the gap between a front edge of the joint chute and a nut platform; a rear end chamfer surface of the rear ferrule compactly fits with a nut chute arranged at the narrow mouth side of the nut, a front end lug ring of the rear ferrule extends into a front ferrule platform and a front ferrule chute sequentially, and a front end cutting edge of the lug ring penetrates into the pipe body under the pressure of the front ferrule chute. The double-ferrule type pipe joint in the invention has the advantages of reliable sealing, good anti-shedding performance, good anti-vibration performance, convenient installation, high-temperature resistance ability, high-pressure resistance ability, wide application range and the like.

The invention discloses a method for inducing phytophthora parasitica var. nicotianae to generate zoosporangia and release spores. The method comprises steps of: culturing phytophthora parasitica var. nicotianae mycelia on an oat medium prepared in a narrow mouth conical flask; preparing an induction liquid for generation of zoosporangia by selecting roots of tobacco seedlings, with 6-7 pieces of true leaves completely expanding, of a black shank infected variety; inducing the mycelia with the induction liquid to generate zoosporangia and to release spores. According to the invention, a characteristic that a black shank infected tobacco variety is more easily to generate affinity reaction with phytophthora parasitica var. nicotianae is employed, and a filtrate of seedling roots of the black shank infected tobacco variety is used as the induction liquid, so as to induce the cultured mycelia to generate zoosporangia. Proved by tests, the invention has a short induction time, high zoospore release rate, high obtained zoospore content; and scraping mycelia for culture is not needed. Therefore, the invention is of less pollution and easy to operate.

The invention relates to the technical field of MEMS (Micro Electro Mechanical System), particularly to a preparation method of an SU-8 photoresist-based three-dimensional microelectrode. The method specifically comprises doping nanoscale ferric chloride particles into SU-8 photoresist through a doping method; etching a groove structure with narrow mouth and wide inside in a silicon substrate; spinning the doped SU-8 photoresist onto the silicon substrate with the groove structure; preparing an SU-8 photoresist three-dimensional microelectrode array through the oblique photoetching micromachining technology; carbonizing the electrode array inside a carbonizing device to obtain an SU-8 carbon nanotube; depositing graphene onto the SU-8 carbon nanotube to form an SU-8 carbon nanotube electrode; filing liquid or colloidal electrolyte inside the prepared SU-8 carbon nanotube electrode. According to the preparation method of the SU-8 photoresist-based three-dimensional microelectrode, the aperture of the SU-8 nanotube is controlled and adjusted through the doping method; through combination of the oblique photoetching technology, the specific surface area of the three-dimensional carbon nanotube electrode can be effectively enlarged; compared with traditional capacitor electrode structures, the SU-8 photoresist-based three-dimensional microelectrode greatly improve the energy density and power density of super-capacitors.

A defoaming method capable of destroying foams generated when a container is filled with drink, or the like, efficiently at a high speed and destroying foams effectively even in the case of a container having a narrow mouth. Liquid surface (6) in a container (1) is irradiated with pulse-like light (2) and a pulse-like sound wave (8) is generated from an irradiated point (7) as a sound source. The pulse-like sound wave thus generated propagates from the sound source as a strong spherical wave to reach a bubble (9) and to destroy the bubble. It can also destroy a bubble located at a place remote from the optical path quickly, thus destroying bubbles efficiently at a high speed. Alternatively, pulse-like light is condensed at a gas portion above the liquid surface and the bubbles can be destroyed with a shock wave generated by breakdown phenomenon.

The invention discloses a washing brush for a narrow-mouth bottle, and belongs to the field of brushes. The washing brush comprises a bracket and brush bodies, wherein the bracket comprises a pipe, atransmission screw rod and adjusting mechanisms, the pipe is hollow, the transmission screw rod and the pipe are rotatably connected, a screw nut is mounted on the transmission screw rod, axial through grooves are arranged in the side wall of the pipe, and the screw nut is fixedly connected with connecting blocks adaptive to the axial through grooves; each adjusting mechanism comprises two connecting rods hinged to the upper and lower ends of the brush bodies, the free ends of the connecting rods are hinged to the pipe, the two connecting rods are parallel to each other, and the brush bodies are parallel to the pipe; each connecting rod comprises a first section hinged to the pipe and a second section hinged to the corresponding brush body, and each first section and the corresponding second section are in bell and spigot joint; a limiting baffle block is mounted on the pipe, and the limiting baffle block is positioned below the adjusting mechanisms; and each adjusting mechanism further comprises regulating rods, one ends of the regulating rods are hinged to the second sections, and the other ends of the regulating rods are hinged to the connecting blocks. The washing brush can beused for effectively cleaning the body of the narrow-mouth bottle, and also can adapt to the narrow-mouth bottles with different bottle body diameters.

The present invention relates to an injection stretch blow molding method of forming a cylindrical narrow mouth container comprising the following steps; injection molding a preform having a body portion integrally molded with a neck portion wherein the body portion is formed thicker-wall and larger outside diameter than the neck portion from a closing surface between a neck mold and an injection cavity mold, and having a step-out portion, wherein an upper surface of the step-out portion is formed by the closing surface of the neck mold between the neck portion and the body portion and the step-out portion has a smaller outside diameter than the body of the container, and stretch blow molding the preform to the container in a blow cavity mold, wherein a body portion of the container is formed thin-wall from around the upper surface of the step-out portion, and the step-out portion and an expanded portion around the upper surface of the step-out portion form a shoulder portion of the container flat, and also the outside diameter of the step-out portion is smaller than the outside diameter of the open end of a cap.

A defoaming method capable of destroying foams generated when a container is filled with drink, or the like, efficiently at a high speed and destroying foams effectively even in the case of a container having a narrow mouth. Liquid surface (6) in a container (1) is irradiated with pulse-like light (2) and a pulse-like sound wave (8) is generated from an irradiated point (7) as a sound source. The pulse-like sound wave thus generated propagates from the sound source as a strong spherical wave to reach a bubble (9) and to destroy the bubble. It can also destroy a bubble located at a place remote from the optical path quickly, thus destroying bubbles efficiently at a high speed. Alternatively, pulse-like light is condensed at a gas portion above the liquid surface and the bubbles can be destroyed with a shock wave generated by breakdown phenomenon.

The invention discloses a multifunctional sealing clip. The multifunctional sealing clip comprises an elastic narrow-mouthed U-shaped supporting connector and two clip bodies which are hinged to the two ends of an opening of the supporting connector and can be turned by 180 degrees; each clip body comprises an S-shaped clip main body, a clip neck part and a clip palm which are integrally connected from back to front, the half sides, deflected towards the width directions of the corresponding clip bodies, of the clip neck parts can enable the clip palms to be interlocked in front of an U-shaped opening of the supporting connector. When the clip bodies are located in front of the supporting connector, the clip neck parts are crossed, the clip palms are interlocked and tightly clamped to form the sealing clip which can clamp a fresh-keeping bag or an opened packing bag, and sealing and fresh-keeping effects are achieved; when the sealing clip is opened, the two clip bodies are outwards turned by 180 degrees, and the supporting connector located at the roots of the clip bodies at the moment limits the turning angles of the clip bodies, so that a certain angle is opened by the two clip bodies, and a nipper is formed; the two clip palms are opposite, an object can be clamped by pressing the middle of the nipper to push the clip palms to be close to each other, and the multifunctional sealing clip can be used for sealing an opening and also be used as the nipper to clamp the object.

The invention discloses a triangular keel mounting structure of a building suspended ceiling. The triangular keel mounting structure comprises triangular keels. Buckling plates are mounted on the lower portions of the triangular keels in a clamped mode. The tops of the triangular keels are provided with narrow-mouth grooves which are internally provided with a plurality of screws. The ceiling is provided with a plurality of mounting holes which are internally provided with expansion type connecting components. The expansion type connecting components comprise connecting parts which are provided with second connecting holes. The tops of the screws are inserted into the connecting parts. First connecting holes and the second connecting holes are connected through connecting elements. The triangular keel mounting structure has the beneficial effects that the slidable screws in the narrow-mouth grooves are connected with the expansion type connecting parts, the mounting processes of a hanger rod and a main keel are omitted, the mounting distance between the hanger rod and the main keel is omitted, and therefore, the triangular keel mounting structure has the characteristics that mounting is convenient, and meanwhile, the distance between the ceiling and the buckling plates is remarkably decreased; and the triangular keel mounting structure is suitable for residences of low floor height. The invention further provides a construction method of the triangular keel mounting structure of the building suspended ceiling.

The invention discloses a rotary-type automatic-positioning reagent bottle cleaning device for biotechnology. The device comprises a driving motor, a lifter, a water containing disc, a conveying port,a rotation positioning device, a cleaning device, a water inlet pipe and a sewage discharge pipe. According to the rotary-type automatic-positioning reagent bottle cleaning device for biotechnology,by using the rotation positioning device, rotation positioning is conducted through a rotation base, a reagent bottle fixing disc is driven to rotate counterclockwise by 90 degrees, a reagent bottle is positioned on an automatic cleaning device, and convenience is provided for cleaning; the neck of the bottle is fixed through an elastic rubber ring and a small suction cup and prevented from toppling over to be broken, by using the automatic cleaning device, a small motor drives a water spray pipe and a cleaning hairbrush to rotate, the inner wall is flushed and cleaned in all directions, and after cleaning is completed, through rotation of the rotation base, the current reagent bottle is replaced by the next reagent bottle. The device is convenient and quick to use and effectively replacesthe labor for cleaning the reagent bottle, the inner wall of a narrow-mouth bottle which is difficultly cleaned by the labor is comprehensively cleaned, data errors caused by solution residues are avoided, and meanwhile it is guaranteed that body injuries cannot be caused to experimenters in the cleaning process.

The invention relates to a sealing ring for performing inner and outer sealing on a joint face. The sealing ring has an annular basal body with an O-shaped cross section, and annular grooves are respectively arranged on the front and rear end surfaces of the annular basal body, and the cross sections of the grooves are in a ladder shape with a narrower mouth part and a wider bottom part. When in use, as gas at the high pressure side of the sealing ring leaks to the lower pressure side of the sealing ring, the sealing ring basal body material expands outwards and is presses on the contact surface more tightly, so the larger the inner pressure is, the larger the pressure applied on the contact surface by the sealing ring basal body material is, thus ensuring better sealing effect.

A circulation heater is provided which uses a cast body, having resistance heating elements therein and also having spirally wound Teflon tubing wrapped about the heater body. The heater body is formed of cast aluminum or other suitable cast material and after casting is machined to form at least one spiral channel for receiving the heater tube therein. The heater tube is pressed into the tubing channel as the heater tube is progressively wound spirally about the heater body. The channel is formed with an undercut profile wherein the channel is undercut to form a narrower mouth which allows the heater tube to be compressed and then snapped into the channel. The profile of this channel insures direct contact between the tubing and the channel wall over greater than 180 degrees or more than one half of the tube circumference to increase the area of surface contact between the heater tube and channel surface.

A device for dispensing a pre-measured amount of material from a container having a closed bottom, a mouth opening and a side wall comprises a discharge tube, connecting mechanism for connecting an upper end of the discharge tube to the mouth opening of the container, a measuring reservoir attached to a lower end of the discharge tube for capturing a pre-determined amount of material, and a pivot mechanism pivotably connecting the reservoir to the discharge tube. The reservoir is pivotable from a first position in which the reservoir is substantially parallel to the discharge tube to a second position in which the discharge tube and the reservoir are substantially perpendicular to one another. With the reservoir in the first position, the reservoir and the discharge tube are insertable into a container having a relatively narrow mouth opening. With the reservoir in the second position, the discharge opening of the reservoir communicates with an opening in the second end of the discharge tube, in a dispensing ready position.

The invention discloses narrow-mouth baffle ring continuous mould stamping equipment. An opening is formed in a lower mould plate of a second stamping mechanism; an ejecting chamber which communicateswith the opening is formed in a mould groove; a material lifting plate of an ejecting structure is arranged below the lower mould plate; an ejecting rod is vertically arranged on the material liftingplate; the upper end of the ejecting rod penetrates through the opening of the lower mould plate and extends into the ejecting chamber of a female mould; and the lower ends of a first connecting rodand a second connecting rod are connected with the material lifting plate, and the upper ends of the first connecting rod and the second connecting rod are connected with a stamping head fixing plate.The narrow-mouth baffle ring continuous mould stamping equipment with an optimized design is reasonable in structural design; when the stamping is ended, and the mould is opened, the stamping head fixing plate moves upwards; the material lifting plate is driven to push the ejecting rod upwards to eject a product in the mould groove through the connecting rods, so that separated blanking between the product and a raw material is realized; and therefore, the machining efficiency is greatly improved, and moreover, secondary damage of the product caused by incomplete blanking in subsequent machining is prevented.

One of these heat exchangers (76) consists of a stack of thin-metal walled hollow platelets (7S1-J5), 12 cm long and 5 wide. Each of these walls has a central region stiffened by alternating bosses with steep slopes, situated between two connection regions. Each wall is made by pressing then cutting an appropriate sheet of metal (aluminium 0.3 mm thick). The edges of the two fin walls form steps, symmetrically welded, the height of each step determining the internal half-thickness of a fin. Each platelet connection region ends in a narrow mouth with a cross section that has the same surface area as the embossed central region, and is welded to the edges of a slot made in an external manifold (80-82). The thickness of the internal channel of a platelet is about 0.4 mm when the fluid concerned is a liquid (water) and that of the spaces between the platelets is 7 mm when the other fluid is a gas (air). By hot pressing or thermoforming, sheets of glass or polymer may also be used but the performance is not as good. A radiator can be made of several exchangers mounted in parallel on each side of two flat main manifolds. Applications: any heat exchangers with high volumetric conduction, low weight and low pumping and ventilating power.

Disclosed is an adjustable brush for a narrow-mouth cup. The brush comprises a brush rod, a main brush head and a stretchable frame; the main brush head is fixedly arranged at one end of the brush rod, and the stretchable frame is installed on the brush rod. The brush is characterized in that a fixed frame is fixedly arranged at the lower end of the brush rod, and lower connectors are evenly arranged on the fixed frame, the upper end of the brush rod is in sliding connection with a sliding frame, upper connectors are evenly arranged at the lower end of the sliding frame, and the upper connectors and the lower connectors are flushed; a locking screw is arranged on the side wall of the sliding frame, and the sliding frame is controlled to be loosened or locked on the brush rod; the stretchable frame is connected between the fixed frame and the sliding frame, and the stretchable frame comprises a lower linkage rod, an upper linkage rod and a side brush head. The size can be decreased, thebrush can be placed into the narrow-mouth cup, then, the side brush head is opened, the cup wall or the cup shoulder can be cleaned, the brush can be adjusted according to the diameter of the cup, the brush frame can be shaped, and use is convenient.

An electrified rail, particularly for the electrification of metal shelving units provided on their front of electronic labels, displays and / or other peripherals, the rail being of the kind comprising a body (1, 100) of electrically insulating plastic material, provided with longitudinal slots (3) suitably distanced to each other, in every one of which a wire or strand (4) of electrically conducting metal which is surrounded for more than 180° of its cross section by the internal walls of the respective slot (3), to be friction-held in it, so that for the remaining section the same wire (4) is free and can be reached by an electric contact useful to connect the wire to a plug or to an electric or electronic device, fixed to said body (1, 100) of the rail, characterized in that the body (1, 100) of the rail is formed in a monolithic way of polycarbonate (PC) or polyphenylene oxide (PPO) and / or other resins having suitable mechanical characteristics, with high electric insulation and with high heat resistance, preferably self-extinguishing, and in that said slots (3) containing electric wires (4) are such and are disposed in such a way that, if after the extrusion step the still hot rail is transversally flexed, slots (3) themselves outwardly open to ease the insertion of electric wires, slots (3) being provided on their bottom of longitudinal middle grooves (6) having the width and depth necessary to allow a transversal elastic deformation of the rail itself during its manufacturing, with the formation of an oscillating fulcrum in correspondence of grooves (6), which is parallel to the longitudinal axis of the grooves (6), whose width is inferior to the width (D) of the outward opening mouth of slots (3) for holding electric wires (4), said slots (3) being positioned one beside the other, and after the surrounding and holding of the wires (4) the slots are open on a visible planar side (102) of the rail body (1, 100) with longitudinal mouths (103) having a width (D) always inferior to the diameter of wires (4); the depth of slot (3) being perpendicular to said visible side (102) and having a value (C′) sufficient for wire (4) to be ditched and protected in the slot (3) surrounding the wires (4) for more than 180° of their section, the wires (4) being held in slots (3) by the toughness and structural non-deformability of the material forming the monolithic body (1, 100) of the rail itself, while through the narrow mouths (103) of said slots (3) every electric wire (4) can be reached by the spring-loaded contacts (32) of plugs (29) or of devices (33) mounted on the monolithic body itself (1, 100) of the rail, wherein the base (2) of body (1, 100) of the rail is provided on its inferior side (2) with small longitudinal grooves (9) having dimensions equal or different from the bottom grooves (6) of slots (3) holding electric wires (4), said bottom longitudinal grooves being in an offset symmetrical position with respect to the slot longitudinal grooves (6), capable of allowing a transversal deformation of the rail during its production.

The present invention comprises a stem structure and an LED lighting device, wherein the stem structure comprises a substrate, configured to be bent into a substrate device with a internal hollow structure, wherein a plurality of LED lamp beads and a plurality of pin needles are attached to a surface of the substrate device; a horn mouth comprising a first wide mouth portion and a first narrow mouth portion opposite to the first wide mouth portion, the first narrow mouth portion being provided with a plurality of upper guide wires for connecting to the plurality of pin needles; a plurality of lower guide wires, disposed inside the horn mouth, and configured to be connected to the plurality of upper guide wires through the first narrow mouth portion; and a glass tube disposed inside the horn mouth and attached to the plurality of lower guide wires; wherein the LED lighting device comprises a glass bulb, wherein a lamp head is disposed at an opening of the glass bulb; a driving circuit board fixedly connected to the lamp head with a collar, an input end of the driving circuit board being electrically connected to the lamp head; and the stem structure, disposed inside the glass bulb, and configured to be electrically connected to an output end of the driving circuit board through the lower guide wire. The technical solution has the following advantages: the stem structure and the LED lighting device have a simple structure, a low cost, a high pass rate, and they can withstand external force.

The invention discloses a cleaning brush for a narrow-mouth bottle, and belongs to the field of brushes. The cleaning brush comprises a support and a plurality of brush bodies mounted on the support,wherein the support comprises an outer pipe, an adjusting screw rod and a plurality of adjusting mechanisms; the adjusting screw rod is arranged in the outer pipe, the adjusting screw rod is rotatablyconnected with the outer pipe, and a nut is mounted on the adjusting screw rod; the adjusting mechanism comprises a sliding base, a first connecting rod, a brush body mounting base and a second connecting rod, the sliding base is slidably connected to the outer wall of the outer pipe and slides in the axial direction of the outer pipe, one end of the first connecting rod is hinged to the slidingbase, the other end of the first connecting rod is hinged to the brush body mounting base, and one end of the second connecting rod is hinged to the outer wall of the outer pipe, and the other end ofthe second connecting rod is hinged to the brush body mounting base; the sliding seats are connected with the nut through connecting blocks, and axial through grooves allowing the connecting blocks tomove are formed in the outer pipe. A plurality of the brush bodies are mounted on the brush body mounting seats in a one-to-one correspondence manner. The cleaning brush is simple in structure, reasonable in design and capable of rapidly and effectively cleaning the inner wall of a narrow-mouth bottle.

The invention relates to the field of processing of subsidiary agricultural products, and particularly discloses a peony polyphenol extraction process. The peony polyphenol extraction process adopts peony petals as a raw material and is characterized in that the peony petals are put into a narrow-mouth flask, an ethanol solution of which the volume fraction is 10-70 percent is added according to a material / liquid ratio of (1:50)-(1:600), the narrow-mouth flask is put into a water bath kettle, and then an ultrasonic probe is arranged in the middle of the solution to carry out ultrasonic extraction. The peony polyphenol extraction process disclosed by the invention is short in extraction time and high in efficiency, and the peony petals which are generally agricultural wastes are taken as the raw material for extracting an active substance, thus the production value of the peony is increased, wastes are changed into valuable substances, and resource utilization of agricultural production wastes is realized.

The invention relates to an active rotary telescopic compound bit applicable to a deep difficult-to-drill hard formation. The bit mainly comprises a bit body, a power end casing, a rack piston cylinder, a narrow-mouth piston, a wide-mouth piston, an arc-shaped rack, a gear, a drilling fluid through hole, a telescopic column, a three-hole flat plate, legs, cones, cone teeth, runner ports and drainage ports, wherein the narrow-mouth piston is connected with the wide-mouth piston by the aid of the arc-shaped rack; the gear embedded inside the rack piston cylinder is meshed with the arc-shaped rack, and the drilling fluid through hole is formed in the center of the gear; the lower end of the gear is fixedly connected with the telescopic column, the tail end of the telescopic column is fixedly connected with the three-hole flat plate, PDC (polycrystalline diamond compact) blades and the cones are arranged at the lower end of the bit body simultaneously, and the PDC blades are evenly arranged in the circumferential direction of the outer wall of the bit body; the telescopic column drives the cones on the three-hole flat plate to axially penetrate through the central groove, and axial movement of the cones is realized. According to the compound bit, the drilling fluid flow is controlled actively, so that the rock breaking efficiency is substantially improved, the drilling cycle is shortened, and the drilling cost is reduced.

The invention provides a forming mold for a novel polyolefin master batch production line, relating to a plastic granule processing molding part and aiming at solving the problems that the surface smoothness of the master batch is poor, a great amount of moisture is attached and cannot be removed by a normal air cooling and drying method, the production rate is reduced and the yield is reduced when the existing polyolefin forming mold is used for processing the ultraviolet light crosslinked polyolefin master batch. The forming mold for the novel polyolefin master batch production line comprises an opening mold plate and a mold body, the opening mold plate is also provided with a fixing hole connected with the mold body, a flow concentration cavity, a transition section and a forming hole are sequentially arranged at the center of the opening mold plate in a thickness direction from inside to outside, the flow concentration cavity, the transition section and the forming hole are communicated and penetrate through the opening mold plate, and the coaxial line of the flow concentration cavity, the transition section and the forming hole is coincided with the central line of the opening mold plate, the flow concentration cavity is a tapered hole, the transition section is a cylindrical hole, the forming hole is a tapered hole, and the diameter of the narrow mouth of the flow concentration cavity is the same as that of the diameter of the narrow mouth of the forming hole. The forming mold for the novel polyolefin master batch production line is suitable for production of the polyolefin master batch in the chemical equipment field.