54results about How to "Outflow will not" patented technology

The invention discloses an electromagnetic micro jet device, and relates to a micro jet device. The electromagnetic micro jet device is suitable for jet of metal liquid as required, and is provided with an upper magnet, a jet cavity, a lower magnet, electrodes, a liquid feed pipe, a liquid feed tank, a lifting mechanism, a stepping motor and a pulse current device, wherein the upper magnet and the lower magnet are fixed on the upper surface and the lower surface of the jet cavity respectively; the jet cavity is provided with a liquid inlet and a liquid nozzle; the electrodes are arranged on the two sides of the jet cavity and stretch into the jet cavity; one end of the liquid feed pipe is communicated with an inner cavity of the jet cavity; the other end of the liquid feed pipe is communicated with the liquid feed tank; an input end of the lifting mechanism is connected with the stepping motor; an output end of the lifting mechanism is connected with the liquid feed tank; and the two ends of the pulse current device are connected with the electrodes.

The invention discloses an air purification humidifier, which comprises a casing and a base, wherein an air purification device, an air purification channel and a motor are arranged in the casing; an air inlet and an air outlet are arranged on the casing; a fan is arranged between the air inlet and the air purification channel; an output shaft of the motor is in driving connection with a power input end of the fan; the air purification device comprises a box body, an air purification water storage cavity, a water delivering mechanism and a water sprinkling mechanism; the box body is detachably connected with the casing; the air purification water storage cavity is arranged at the lower part of the box body; the water delivering mechanism and the water sprinkling mechanism are respectivelyarranged in the air purification channel and are fixedly connected with the box body; a water inlet of the water delivering mechanism is communicated with the air purification water storage cavity; and a water outlet of the water delivering mechanism is communicated with the water sprinkling mechanism. The air purification humidifier also comprises a rotating shaft; the upper part of the rotatingshaft is fixedly connected with a center hole of the fan; and the lower end of the rotating shaft is connected with a power input end of the water delivering mechanism.

The invention discloses an anti-tilting leakage controlling mechanism applied to a humidifier. A mandril hole is arranged on a water valve seat of the humidifier, a pedestal is provided with a mandril component penetrating the pedestal, the mandril component can pass the mandril hole to carry out telescopic movement and is opposite to the valve stem of a water valve, a sealing device is arranged between the mandril component and the mandril hole, the length of the mandril component is longer than the sum of the distance between the bottom surface of the water valve seat and the bottom of the pedestal and the distance between the bottom of the valve stem and the bottom surface of the water valve seat when the water valve is closed. When the humidifier is arranged on the ground, the bottom of the mandril component is clung to the ground, the mandril component moves upwards as a whole to support and be connected with the bottom of the valve stem, the valve stem ejects upwards, water runs out from a gap between a cover of a water tank and the water valve, water is prevented from running into the internal of the pedestal from the mandril due to the installation of the sealing device; when the humidifier tilts, the mandril component moves back to a position where the mandril component does not support and is not connected with the bottom of the valve stem, the water valve blocks the gap between the water valve and the cover under the spring action of the valve stem, and therefore water cannot run out.

The invention relates to a brake system (1) for a motor vehicle, comprising an at least single-line brake cylinder (2), with which a brake force can be exerted on at least one wheel of the motor vehicle when actuated. The brake cylinder (2) is operatively connected in a mechanical manner to a booster cylinder (8) which is decoupled from a brake specification detection means (24) and which can be actuated hydraulically to actuate the brake cylinder (2) according to an intent of the driver detected by the brake specification detection means (24). The invention further relates to a motor vehicle comprising a brake system (1).

The invention relates to a beverage pouring device in the form of a disposable barrel for the compressed-gas operated pouring of beverages such as beer, wine and soft drinks that are kept at drinkingtemperature, e.g. using compressed CO2. Said device consists of a multi-part container (100), a safety fitting (8) located on top of the container, a fitting pipe (10) that is immersed in the container interior and a detachable tap head that can be placed on the safety fitting or a connection piece that can be placed on said fitting during the filling process. When a lever is actuated, the head orpiece displaces a seal that is situated in an external housing of the safety fitting, said housing connecting the safety fitting to the container body, downwards against an elastic force into a position that opens the liquid channel for the liquid beverage that rises via the fitting pipe. The device also optionally comprises a base and top ring. The aim of the invention is to achieve a simpler, less expensive construction using sheet steel, with an anti-corrosion protection which nevertheless complies with food safety and hygiene standards, whilst at the same time providing variable connection techniques during the filling and pouring process by means of the safety fitting (8). To achieve these aims, the safety fitting, together with a liner (9; 9a) that is located in the interior of thecontainer to protect the inner wall of the container (100), consist of a sterile material.

The invention relates to a cup lid structure of a coffee pot, which comprises a cup body. An annular opening is formed at the upper end of the cup body. A handle is arranged at one end of the opening, while a water outlet nozzle is arranged at the other end of the opening. A cup lid component is also arranged on the opening. A water inlet flow passage is arranged in the cup lid component and a water outlet flow passage is arranged at the lower end of the cup lid component. A one-way valve is arranged on the water inlet flow passage and a switch mechanism is arranged on the water outlet flow passage. The cup lid component comprises a basin-shaped cup inner lid and a cup lid arranged on the cup inner lid. The switch mechanism comprises a cup lid lever and a sealing column positioned on the cup lid lever. The water inlet flow passage is vertically arranged on the cup inner lid. The water outlet flow passage is horizontally arranged at the bottom of the cup inner lid. A water outlet hole is arranged on the cup inner lid and positioned closer to the water outlet nozzle. The cup lid lever is rotatably connected with the cup inner lid. A spring is further arranged between the cup lid lever and the cup inner lid. The sealing column blocks a water outlet hole of the cup inner lid. The sealing column seals the water outlet hole of the cup inner lid under the action of the spring. When the cup lid lever is pressed down, the sealing column moves upward. When the cup body is tilted for pouring coffee, the coffee can flow out from the water outlet hole of the cup inner lid. The cup lid structure is characterized by simple and reasonable structure, flexible operation, reliable connection, good sealing performance and low manufacturing cost.

The invention discloses a skin care product bottle. The skin care product bottle comprises a hard bottle body, a liquid outlet head, a piston body, a rear lid, an inner pressing lid and an outer pressing lid, wherein the liquid outlet head is fixedly connected to the front end of the bottle body, the piston body is slidingly connected inside the bottle body, the rear lid is fixedly connected to the rear end of the bottle body, the inner pressing lid is slidingly connected with the rear lid, and the outer pressing lid is rotatably connected with the inner pressing lid. Before the skin care product bottle leaves from a factory, different numbers of second one-way valve plates are installed at the lower end of the piston body to adjust the liquid outlet quantity of the skin care product bottle each time, and a user can slightly adjust the liquid outlet quantity by rotating the outer pressing lid.

The invention relates to glazing devices, and more particularly to a device for glazing ceramic cups. According to the device for glazing the ceramic cups, the glazing speed is high, and glaze slip cannot enter the interiors of the ceramic cups. The device for glazing the ceramic cups comprises a bottom plate, a charging groove, a conveying mechanism, clamping mechanisms and a pressing mechanism,wherein the bottom plate is used for installing the whole device, the charging groove is formed in one side of the upper portion of the bottom plate, the conveying mechanism is arranged on one side ofthe upper portion of the bottom plate, the charging groove is located below the conveying mechanism, the clamping mechanisms are arranged on the conveying mechanism, and the pressing mechanism is arranged in the middle of the upper portion of the bottom plate. The device achieves the effects that the glazing speed is high, and the glaze slip does not enter the interiors of the ceramic cups; and by placing the ceramic cups on cross rods, a conveyor belt sequentially moves the ceramic cups into the charging groove for glazing, so that rapid glazing can be achieved.

The invention discloses a novel efficient special clinical drug application device for a skin burn and a use method of the device. The device comprises a housing, wherein a drug tank and a disinfection tank are mounted on the housing; a discharging pipe is fixedly mounted at the bottom of each of the drug tank and the disinfection tank; a sliding groove is fixedly connected with an internal wall of the housing; a movable plate is slidingly connected into the sliding groove; a return spring for pushing the movable plate to return is further arranged in the sliding groove; the two discharging pipes are slidingly connected with the movable plate; two leakage holes are formed in the movable plate; the movable plate can slide relative to the discharging pipes; when the movable plate moves to anextent that the leakage holes are coincided with the discharging pipes, the drug tank and the disinfection tank perform discharging; and two baffles are rotationally connected with the internal wallof the housing in a limiting manner through rotation shafts I. The device applies a drug after applying alcohol for disinfection; in addition, after the alcohol is applied, the device can blow air toa wound where the alcohol is applied to accelerate drying and cooling of the wound; and the device improves disinfection and drug application efficiency and raises a comfort level of a patient duringtreatment.

The invention discloses a feed trough for chickens. The feed trough comprises a feed storage hopper, a discharge control component and a foraging disc arranged below the feed storage hopper; a cover body is arranged at the top of the feed storage hopper, and a through hole is formed in the bottom of the feed storage hopper; the discharge control component comprises a middle column, a hook-shaped support rod hinged to the lower end of the middle column and an inverted cone platform connected to the top of the middle column; the inverted cone platform is slidably arranged in the through, and the outer diameter of the lower end of the inverted cone platform is bigger than the aperture of the through hole; the middle column penetrates through the middle of the foraging disc and is slidably connected to the foraging disc; the support rod abuts against the bottom of the foraging disc. In the feed trough for the chickens, the cover body isolates feed and the outside air to prevent the feed form being polluted; the pressure exerted on the support rod is adjusted through the quantity change of the feed carried on the foraging disc, and accordingly the middle column slides up and down; a gap or sealing closure between the inverted cone platform and the through hole is formed to control the leakage of the feed in the feed storage hopper. The feed trough for the chickens has the technical advantages of being capable of storing the feed, controlling discharge and reducing feed pollution.

The invention belongs to the technical field of a kitchen electric appliance, and particularly relates to an exhaust hood with a smoke collecting cavity capable of ascending and descending. By aimingat the defects of the existing lateral suction type exhaust hood with the smoke collecting cavity capable of ascending and descending that the smoke collecting cavity is built in a casing, so that oilstain can be easily leaked out from a position between the casing and the smoke collecting cavity, the exhaust hood provided by the invention has the following technical scheme that the exhaust hoodwith the smoke collecting cavity capable of ascending and descending comprises a smoke box, a fan, a flue, the smoke collecting cavity, an ascending and descending mechanism and a guide mechanism, wherein the smoke collecting cavity is arranged outside the glue in a way capable of ascending and descending; the smoke collecting cavity is provided with an air door; the air door is positioned at thefront side surface of the smoke collecting cavity; the insides of the smoke box, the flue and the smoke collecting cavity are communicated to form an oil smoke passage. The exhaust hood has the beneficial effects that the smoke collecting cavity capable of ascending and descending is arranged outside the flue; oil stain cannot be accumulated on the outer surface of the smoke collecting cavity; theoil stain between the flue and the smoke collecting cavity can be collected in the smoke collecting cavity without flowing out; the dimension in the left and right direction of the smoke collecting cavity can be made to be big; under the identical conditions, the air door area of the smoke collecting cavity can be larger.

The invention discloses a tubular type centrifuge. The tubular type centrifuge comprises a barrel, a rotary drum, a liquid collecting plate, a feeding tube and a liquid draining tube, wherein the rotary drum is coaxially mounted in the barrel; the upper end of the rotary drum is connected with a driving shaft through a coupler; the bottom of the rotary drum communicates with the feeding tube; an annular slide way is arranged between a side of the rotary drum and the barrel, so that the rotary drum rotates stably; through holes are formed in the upper end of the rotary drum; the liquid collecting plate is coaxially mounted at the upper end of the rotary drum; during high-speed running of the rotary drum, separated liquid flows to the liquid collecting plate via the through holes; the liquiddraining tube is arranged on the bottom of the liquid collecting plate; and an ultrasonic waveguide rod is coaxially arranged on a vertical portion of the feeding tube, and is electrically connectedwith a peripheral ultrasonic generation source. According to the tubular type centrifuge, the rotary drum which does not need to be taken out can be automatically and thoroughly cleaned.

The invention relates to the technical field of manufacturing of electrified coils in motors, and discloses equipment for positioning and manufacturing a stator in a motor energized coil. The equipment comprises a rotary disc, wherein the surface of the rotary disc is movably connected with a gear; the surface of the gear is movably connected with a screw rod; the surface of the screw rod is movably connected with an extension spring; the surface of the extension spring is movably connected with a movable rod; the end, away from the extension spring, of the movable rod is movably connected with a grinding disc. A connecting rod is movably connected to the joint of the screw and the extension spring, an expansion plate is movably connected to the end, away from the screw, of the connectingrod, a torsion spring is movably connected to the surface of the expansion plate, a guide shaft is movably connected to the surface of the torsion spring, a rotating plate is movably connected to thesurface of the guide shaft, and a hole expanding plate is movably connected to the surface of the rotating plate. And if the hole grinding size is perfect, the detection bag does not contact with thehole, otherwise, the detection bag contacts with the hole to generate gas, so the effects of grinding and polishing the silicon wafer and detecting the aperture are achieved.

The invention relates to a clamping unit for a molding machine (2), and in particular to a clamping unit (1) for an injection molding machine. The clamping unit is provided with a mould height adjusting apparatus (3), wherein the mould height adjusting apparatus (3) is provided with at least a lubrication area (4) which is at least partially filled with a lubricant (M), in which the lubricant (M) is a lubricating oil. The lubrication area (4) is sealed by a hermetic element (5). The invention also relates to a molding machine, and in particular to an injection molding machine which is provided with an injection unit and the clamping unit in accordance with the invention.

The invention relates to the technical field of kitchen utensils, in particular to a euphalerus robinae square chopping board cleaning device based air exchange and barometric changes. The technical problems that a euphalerus robinae square chopping board is not cleaned easily, is high in water absorption and is not likely to be air-dried are solved. In order to solve the technical problems, the euphalerus robinae square chopping board cleaning device based air exchange and barometric changes comprises a base, the two sides of the top of the base are each fixedly connected with a protective plate, the protective plates are arc plates, a placement chamber is fixedly connected to the bottoms between the two protective plates, the middle of the top of the placement chamber is sunken downwards, and the bottom of the placement chamber is fixedly connected to the top of the base. While the two sides of the chopping board are cleaned, the two sides of the chopping board are air-dried, bacteria on the two sides of the chopping board are prevented from breeding, body health of people is ensured, cleaning and air-drying can be performed at the same time, energy is saved, and the cleaning efficiency is improved.

The invention discloses a nipple structure which comprises a drum-shaped nipple head body, wherein the lower part of a nipple head is provided with a skirt edge, the top of the nipple head is provided with a liquid outlet, an inner cavity of the liquid outlet is internally provided with a sealing disk in a connecting manner, the periphery of the sealing disk is provided with a thin annular edge which is connected with the side wall of the inner cavity of the nipple head body, the middle of the sealing disk is provided with a liquid outlet cut, the skirt edge is provided with a small downwards-extending circular pipe, and the bottom of the small circular pipe is provided with an air replenishing cut. When a baby sucks the nipple, because the annular edge of the sealing disk is provided with the thin annular edge, the sealing disk upwards upsrings, the cut at the middle of the sealing disk can be automatically opened under the suction force, liquid in the bottle can flow out of the liquid outlet on the nipple from the cut, when the liquid in the bottle is sucked out, the pressure in the bottle is reduced, atmospheric pressure can open the cut at the bottom of the small circular pipe for replenishing air in the bottle for balancing pressure, and when the suction force disappears, the two cuts can be automatically closed.

The invention discloses an anesthetic spraying air pipe structure, and belongs to the technical field of anesthetic spraying air pipes. The anesthetic spraying air pipe structure comprises a medicineinjection barrel, a first medicine spraying air pipe and a second medicine spraying air pipe, wherein a first concave hole is connected to the outer wall of the medicine injection barrel; the bottom of the medicine injection barrel is cut with a second concave hole; the first medicine spraying air pipe is communicated with the second concave hole; the bottom of the medicine injection barrel is connected with a cylinder; the first medicine spraying air pipe penetrates through the cylinder and is communicated with the second medicine spraying pipe; a breathing air pipe is connected to the firstmedicine spraying pipe and the second medicine spraying pipe; and one end of the breathing air pipe far away from the first medicine spraying pipe penetrates through the cylinder and extends outwards.The structure can conveniently spray the anesthetic liquid to a patient, and the patient is prevented from suffering from tube intolerance symptoms such as cough and the like caused by the fact thatthe drug effect of the anesthetic liquid gradually loses during the treatment of the patient, so that the pain of the patient is reduced.

An embodiment of the invention provides a production method of 3D printed artificial bone and relates to the technical field of medicine. The method comprises the steps as follows: a 3D graph is obtained through 3D CT; a 3D model of a closed bone window is obtained according to the 3D graph; a first sensitive drug is obtained; a second sensitive drug is obtained, and a lactic acid-acetic acid containing copolymer with the weight percentage being 0.1%-20% is dissolved with 1,4-dioxane into a solvent; the first sensitive drug is dissolved in the solvent and a first suspension is prepared; a calcium-containing compound with the weight percentage being 5%-50% is added to the first suspension and a first solid is prepared; the second sensitive drug is dissolved in the solvent and a second suspension is prepared; after the first solid is added to the second suspension, a calcium-containing compound with the weight percentage being 5%-30% is added to serve as a raw material, and a first pastymaterial is prepared; the first pasty material is added to a 3D printer for printing and first artificial bone is formed. The technical problem that drugs cannot be kept at affected parts in the prior art is solved, and the technical effects of drug closing and increase of later can be realized.

The invention discloses a water seal connecting pipe used for connecting a faucet; the water seal connecting pipe comprises a pipe body connected between the faucet and a water tube; a periphery of an inner side of one end of the pipe body radially extends to form a protrusion ring; the protrusion ring extends in an axial direction of the pipe body so as to form a step tube; a valve rod, a valve core sheet and a valve core seat used for fixing the valve core sheet are arranged in sequence in an axial extension direction of the step tube; the beneficial effects are that when the faucet needs to be replaced, the faucet is screwed off, so resistance of the valve rod connected with the faucet is gone; a reset spring pushes the valve core sheet to reset position, so the valve core sheet tightly contacts with the step tube, water cannot flow through the step tube, a waterway is closed, so maintenance work can be done without closing a total sluice; the water cannot flow out the water tube in faucet replacement, thus saving water.

The invention relates to the technical field of composite materials, in particular to a high-strength wrinkle-resistant environment-friendly hot-melt plate for decoration and a preparation method thereof. The invention provides a high-strength wrinkle-resistant environment-friendly hot-melt plate for decoration. The high-strength wrinkle-resistant environment-friendly hot-melt plate consists of a facing layer, a PE film, a plate layer and a second PE film in sequence. The invention further provides a preparation method of the hot-melt plate. The hot-melt plate disclosed by the invention does not use any adhesives and solvents, so that the hot-melt plate is environment-friendly, pollution-free and odorless; furthermore, the high-strength wrinkle-resistant environment-friendly hot-melt plate is high in overall structural strength, resistant to impact and wrinkle, not liable to deform and dampproof and has long service life; the high-strength wrinkle-resistant environment-friendly hot-melt plate is applicable to decoration of all types of offices, homes and the like. A preparation process disclosed by the invention is simple and convenient to operate; no complicated and expensive equipment is needed; industrial production can be realized.

The invention relates to an automatic electroplating machine capable of being used for irregular parts and facilitating clamping. The automatic electroplating machine comprises a rack. An electroplating pond is arranged in the middle of the rack. A feeding device cooperating with a carrier is arranged on the left side of the electroplating pond. At least two sets of sleeved connection columns in sleeved connection fit with products are evenly arranged on the carrier. A material taking mechanism cooperating with the feeding device is arranged on the upper portion of the rack. The material taking mechanism comprises a material taking moving device, a material taking lifting device arranged on the moving device and a material taking clamp which is arranged on the material taking lifting device and cooperates with the carrier. According to the automatic electroplating machine, the carrier is sleeved with the products, then the carrier enters a designated place through the feeding device, then the material taking clamp on the lower portion of the material taking mechanism is utilized for clamping and taking out all the products on the carrier, then the products fall into the electroplating pond to be electroplated through moving and lifting, the products are taken out after being electroplated, and meanwhile the feeding device completes feeding of the next carrier; and then electroplating continuity is greatly improved, and electroplating time is saved.

The invention relates to the technical field of oil pipe pup joints, and discloses an oil field special buckle oil pipe pup joint. The oil field special buckle oil pipe pup joint comprises an outer pipe and an inner pipe; sealing rings are fixedly connected to the two ends of the outer pipe, internal threads are arranged on the inner wall of the right end of an inner cavity of the outer pipe, a connecting handle is fixedly connected to the left end of the inner pipe, and the right end of the inner pipe is fixedly connected with a connecting pipe. According to the oil field special buckle oil pipe pup joint, through the arrangement of the sealing rings, the sealing performance between the oil pipe pup joint and an oil pipe connected with the oil pipe pup joint is improved, liquid leakage can be prevented, the oil pipe pup joint and the oil pipe convey liquid conveniently, and through the arrangement of a buckle and a clamping groove, a spring is in a stretched state in the buckle and clamping groove clamping process; the resilience force of the spring pulls the oil pipe connected with the oil pipe pup joint to move towards the middle of the oil pipe pup joint, connection between theoil pipe pup joint and the oil pipe is tighter, leakage of liquid can be effectively prevented, and reliability of connection between the oil pipes is improved.

This invention relates to a stopper of preventing a taking poison accident, formed in a general container, wherein a stopper which can be open and shut automatically according to the using degree of the container is installed in the outlet of a container containing general liquid dangerous material, that is, the liquid dangerous material like agricultural chemicals is discharged only in the vertical state of the container, in the declined state thereof, the liquid dangerous material is not discharged, whereby in case of taking the liquid dangerous material by the moment impulse the taking degree is formed to the declined state so that the liquid dangerous material is not discharged, and in case that a child or a drunken man mistakes it for a beverage, the discharging degree of the container is formed at the declined state not to discharge the poison material. Therefore, the safety stopper device of this invention has the effect that an impulse suicide, a mistaken drinking and like are prevented.

The feeding bottle comprises a bottle body, a nipple and a suction pipe, the blowout prevention device comprises an upper cover blade, a silica gel blade and a lower cover blade, a groove is formed in the first face of the silica gel blade, and when the silica gel blade is attached to the edge of the upper cover blade, a first cavity is formed by the groove and the bottom of a first connecting part of the upper cover blade; the first cavity is communicated with the outside through an air groove formed in the upper cover leaf, a first connecting pipe penetrates through a through hole in the groove, a second connecting pipe is arranged on the lower cover leaf, a first step face is arranged in the second connecting pipe, an opening in the upper end of the second connecting pipe is attached to the second face of the silica gel leaf face, and a second cavity is formed. The attaching position corresponds to the groove area of the first face, and the valve penetrates through the first step face and is attached to the lower surface of the first step face. The feeding bottle is used for solving the technical problem that a feeding bottle in the prior art is prone to water spraying.

The invention discloses a phase change energy storage material prepared by using a micro-emulsion technology. Raw materials of the phase change energy storage material comprise, by weight, 40-60 partsof a phase change material, 10-20 parts of an acrylate monomer mixture, 3-5 parts of an emulsifier, 3-5 parts of an initiator, 0.2-0.4 part of an acid-base regulator, 2-3 parts of a reducing agent and 100-120 parts of distilled water. A preparation method of the phase change energy storage material comprises the following steps: taking and stirring the distilled water, the emulsifier, the initiator and the acid-base regulator, then adding a mixed liquid of the polyacrylate monomer mixture and the phase change material, and continuously performing stirring to obtain a pre-emulsion; and sequentially dropwise adding the pre-emulsion and the reducing agent into a reactor in batches at a certain temperature, and carrying out a polymerization reaction under stirring to obtain the phase change energy storage material. The phase change energy storage material with a stable structure is obtained by an acrylate monomer coating technology, and has the advantages of good dispersibility, high specific heat capacity, realization of the temperature being adjustable in a range of 20-35 DEG C, and wide application range.

The invention relates to the technical field of oil pipe short connection, and discloses a oil field special buckle oil pipe short connection, which includes an outer pipe and an inner pipe, both ends of the outer pipe are fixedly connected with sealing rings, Internal threads are provided on the inner wall, a connecting handle is fixedly connected to the left end of the inner tube, and a connecting pipe is fixedly connected to the right end of the inner tube. The special buckle of the oil pipe is shorted in the oil field. Through the setting of the sealing ring, the tightness between the shorted oil pipe and the oil pipe connected to it is increased, which can prevent the leakage of liquid and facilitate the short connection of the oil pipe and the delivery of liquid by the oil pipe. When the buckle is connected with the slot, the spring is in a stretched state, and the elastic force of the spring pulls the tubing connected to the tubing short to move toward the middle of the tubing short. The connection between the connection and the oil pipe is tighter, which can effectively prevent the leakage of liquid and improve the reliability of the connection between the oil pipes.