92results about How to "Strong pull" patented technology

The invention relates to an optical adjusting mechanism, in particular to a multi-dimensional optical lens posture adjusting frame. The objective of the invention is to solve the problems of large size, high price and complex installation and debugging processes of the existing optical adjustment mechanism. The device comprises a fixed seat, a transverse movement adjusting plate, a longitudinal movement adjusting plate, a rotary adjusting seat and a vertical supporting plate, wherein the transverse movement adjusting plate is mounted on the fixed seat and can be manually and transversely adjusted; the longitudinal movement adjusting plate is mounted on the transverse movement adjusting plate and can be manually and longitudinally adjusted; the rotary adjusting seat is mounted on the longitudinal movement adjusting plate; the pitching adjusting mirror frame is arranged on the vertical supporting plate; the pitching adjusting ring is connected with the pitching adjusting mirror frame; the rotary adjusting seat can be used for manually adjusting a part connected to the rotary adjusting seat to rotate; the vertical supporting plate can adjust a part connected to the vertical supporting plate to move up and down; the pitching adjusting ring can realize the pitching adjustment of the pitching adjusting mirror frame through manual operation, thereby realizing the multi-dimensional adjustment of the optical lens in a narrow space.

The invention relates to the technical field of heterojunction solar cells, and particularly discloses a selective electrode contact heterojunction cell preparation method and a heterojunction cell, and the method comprises the steps: carrying out the first texturing of a silicon wafer substrate, carrying out the mask layer preparation of the textured silicon wafer, and carrying out the first patterning processing of the silicon wafer. Performing slotting treatment on two sides of the silicon wafer based on picosecond laser, performing secondary texturing on the silicon wafer, placing the cleaned silicon wafer in a second texturing mixed solution so as to generate a large textured pyramid structure on the inner bottom surface of a groove in the two sides of the silicon wafer, and removing the first mask layer from the silicon wafer after secondary texturing to obtain a second textured pyramid structure; sequentially depositing a plurality of layers including an intrinsic amorphous silicon layer and the like on the two surfaces of the silicon wafer, printing a second mask layer in a counterpoint manner in other areas of the silicon wafer which is provided with the groove in the first time of patterning based on exposure and development, electroplating a copper grid line on the silicon wafer, and sequentially removing the second mask layer and a copper seed layer on the silicon wafer after electroplating the grid line; the selective electrode contact copper grid line heterojunction solar cell is obtained, the problem of grid separation of the copper grid lines is solved, and the cell efficiency is improved.

The invention discloses a preparation method of a sodium alginate fiber biological material fiber with a hollow structure and a sodium alginate fiber.The preparation method comprises the following steps that 101, CaCl2 particles are dissolved in deionized water and fully stirred, and a CaCl2 / H2O core layer spinning solution is prepared; step 102, dissolving sodium alginate in deionized water, heating to improve the solubility of the sodium alginate in the deionized water, and fully stirring to obtain an SA / H2O cortex spinning solution; and step 103, respectively extruding the SA / H2O skin layer spinning solution and the CaCl2 / H2O core layer spinning solution into a CaCl2-removed coagulating bath through a coaxial needle at the speeds of 200 [mu] L.min <-1 > and 200 [mu] L.min <-1 >, and aging to obtain the hollow fiber. According to the preparation method, a coaxial spinning process is adopted, and the problems of fluid fracture and the like caused by drafting instability can be effectively avoided. Hollow fibers are used for replacing solid rod-shaped fibers, the process is efficient, convenient, energy-saving and environment-friendly, the experiment repeatability is high, a high-voltage electric field and toxic substances are not involved in the preparation process, and damage to biological tissues is avoided.

The invention belongs to the technical field of varnished wire detection, and particularly relates to a detection device for an inductance element varnished wire, which comprises a base, a winding traction mechanism, a guide diameter measuring mechanism, a pressurization air supply mechanism, a wire diameter feedback regulation and control mechanism, a detection angular velocity control mechanism, a detection result visual display mechanism and a PLC (Programmable Logic Controller). According to the invention, continuous and relatively stable tensile force is provided through constant-speed rotation of the winding drum, the increase of the tensile force is more linear, additional damage to the enameled wire caused by sudden impact force is avoided, the test result can more accurately reflect the tensile property of the enameled wire in actual use, and the test can be carried out in a relatively compact space, so that the test efficiency is improved. According to the device, the requirement for a site is relatively low, the angular speed of the winding drum and the detection height of the winding drum in the detection process can be automatically adjusted, and a final test value in a tension test can be displayed more visually and clearly.

The embodiment of the invention relates to the field of photovoltaic technology, and provides a solar cell and a photovoltaic module, and the solar cell comprises a cell body, a first surface of the cell body is provided with a plurality of first grid lines which extend along a first direction and are arranged along a second direction, and the first surface comprises a first region and a second region which are arranged along the second direction, the first grid line at least located in the first region comprises a first main body part and a first connecting part which are alternately arranged; a plurality of columns of first bonding pad structures are arranged on the first surface, each column of first bonding pad structure comprises a plurality of first bonding pads, the first bonding pads are in electric contact with the corresponding first grid lines, the first bonding pads located in the first region are located on the first connecting parts, and the orthographic projection of the first connecting parts on the first surface is located in the orthographic projection of the first bonding pads on the first surface; the orthographic projection area of the first bonding pad in the first region on the first surface is larger than the orthographic projection area of the first bonding pad in the second region on the first surface. The solar cell and the photovoltaic module provided by the embodiment of the invention are at least beneficial to improving the welding tension between the solar cells.

The utility model relates to the technical field of unmanned aerial vehicles, in particular to a traction unmanned aerial vehicle, which is characterized in that horizontal spiral components are fixed on two sides of a vehicle body, each horizontal spiral component comprises a force arm, the force arms are fixed on two sides of the vehicle body, propellers are mounted on one side of the top end face of each force arm, and a detachable buffer device is mounted at the bottom of the vehicle body. The buffer device comprises a motor, the motor is fixedly installed on the bottom end face of the machine body, a telescopic rod is installed in the center of the bottom end face of the machine body, the telescopic rod is sleeved with a telescopic spring, a cross-shaped supporting seat is fixedly installed at the bottom end of the telescopic rod, and a traction assembly is fixedly installed on the upper surface of the cross-shaped supporting seat. The horizontal spiral assembly can adjust thrust through speed change in the vertical take-off and landing stage so as to maintain the front-back balance of the unmanned aerial vehicle body, the buffer device is arranged to protect the unmanned aerial vehicle from being damaged during landing, the traction assembly is arranged to achieve the traction function, and the unmanned aerial vehicle has flexibility.

The utility model provides a collision buffering and energy absorbing device, a motion platform system and a photoetching machine. The collision buffering and energy absorbing device comprises a main body structure and an elastic body, the elastomer comprises an upper-layer elastomer and a lower-layer elastomer; the main body structure comprises an upper stator structure, a middle rotor structure and a lower stator structure which are sequentially arranged in the vertical direction. The upper stator structure and the lower stator structure are rigidly connected; the middle rotor structure extends out of the peripheries of the upper stator structure and the lower stator structure; the upper-layer elastic body is arranged between the middle mover structure and the upper stator structure, and the two ends of the upper-layer elastic body are connected with the upper stator structure and the middle mover structure respectively; the lower-layer elastic body is arranged between the middle mover structure and the lower stator structure, and the two ends of the lower-layer elastic body are connected with the lower stator structure and the middle mover structure respectively; the upper-layer elastomer and the lower-layer elastomer are spatially crossed; through the configuration, damage to parts caused by collision due to high-speed movement of the moving table can be avoided, meanwhile, the internal occupied space is reduced, and the collision stroke is shortened.

The utility model discloses a safe high temperature resistant silica gel cable, comprising an inner support sleeve; the beneficial effects of the utility model are that the insulation performance of the cable and the protection capability of the outermost part are further improved by adopting the cross-linked polyethylene insulation material as the silica gel insulation layer and the polyvinyl chloride material as the wear-resistant layer; by means of the structural design that the reinforcing strips are fixedly connected to the outer side of the inner supporting sleeve at equal intervals and the inner fixing sleeve and the inner supporting column are fixedly connected to the inner side of the inner supporting sleeve, the mechanical strength of the cable is remarkably improved, larger tension, pressure and bending stress can be borne, and the cable has good insulation performance and high-temperature resistance through the arrangement of the silica gel layer and is suitable for being used in the field of communication. And the core wire can be protected from being influenced by high temperature and electromagnetic interference.

The invention relates to the technical field of cross-linked polyethylene insulated cables, and provides a high-strength tensile-resistant mining cross-linked polyethylene insulated cable which comprises a conductor, a cross-linked polyethylene insulating layer, an inner sheath, an armor layer and an outer sheath, the cross-linked polyethylene insulating layer wraps the conductor, the armor layer is arranged outside the inner sheath, and the outer sheath is arranged outside the inner sheath. The outer sheath wraps the outer portion of the armor layer, the cable further comprises a plurality of tensile protection sleeves and tensile connecting pieces, the tensile protection sleeves are arranged outside the outer sheath and provide external protection for the cable, meanwhile, the tensile protection sleeves are provided with mechanical interlocking structures, the tensile connecting pieces are used for connecting every two adjacent tensile protection sleeves, and the tensile protection sleeves are arranged outside the outer sheath and provide external protection for the cable. And meanwhile, the tensile connecting piece located at the edge of the cable is connected with a reinforcing piece used for being connected with equipment connected with the cable. According to the technical scheme, the problem that a traditional mining cable in the prior art is poor in tensile property and protective property when facing a complex mine environment is solved.

The remote intelligent control device for the oil well brake comprises a brake mechanism and further comprises an automatic brake assembly. The brake mechanism comprises a first connecting rod, a one-way advancing mechanism and a brake executing mechanism. The front end of the first connecting rod is connected with the one-way advancing mechanism, the rear end of the first connecting rod is connected with the brake executing mechanism, and the first connecting rod is provided with an automatic brake assembly and a tension detection sensor. The automatic brake assembly comprises a fixing frame, a telescopic assembly in the same direction as the first connecting rod is arranged on the fixing frame, a sliding frame connected with the first connecting rod is arranged on the telescopic assembly, and the sliding frame penetrates through the fixing frame. The manual brake and the automatic brake are combined, and the brake is still firm after being used for a long time.

The utility model relates to the technical field of hardware for doors, and discloses a door stopper, which comprises a door stopper seat, a door stopper and a door stopper, the damper is fixedly arranged in the mounting groove; the spring bolt is hinged in the mounting groove through a first shaft, and a limiting groove is formed in the outer end of the spring bolt; one end of the connecting rod is hinged to the telescopic end of the damper through a second shaft, and the other end is eccentrically hinged to the spring bolt through a third shaft; the first spring is arranged in the mounting groove and applies acting force towards the spring bolt to the telescopic end; a limiting shaft capable of entering the limiting groove is arranged on one side of the door suction head; when the third shaft is located on one side of the connecting line of the first shaft and the second shaft, the limiting groove faces the limiting shaft. When the door stopper seat and the door stopper head get close to each other, the limiting shaft enters the limiting groove and drives the spring bolt to rotate until the third shaft is located on the other side of the connecting line of the first shaft and the second shaft. According to the door stopper, large impact force generated on the door stopper head and the door stopper seat during locking can be reduced, and meanwhile the door stopper is simple in structure, small in size and low in manufacturing cost.

The application relates to the technical field of switching power supplies, in particular to a wiring mechanism installed on a switching power supply box, which comprises a power supply box and further comprises: a protective shell, which is detachably connected with the power supply box, and a plurality of protective compartments are uniformly arranged in the protective shell, and wiring ports are arranged on the protective compartments; and a wiring protection mechanism, which is located in the protective compartments and connected with the power supply box through power supply box wiring, one end of the power supply box wiring is electrically connected with the power supply box, and the other end of the power supply box wiring penetrates the wiring ports; wherein the wiring protection mechanism comprises a winding buffer assembly and a brake control assembly; the wiring mechanism installed on the switching power supply box has a novel structure and can fully protect the wiring end, avoids damage of external tension to the wiring end, does not cause short circuit, and improves the safety performance in the use process of the power supply box.

The utility model discloses an injection molding submarine gate double-ejection structure which comprises a submarine gate and a gate runner which are formed between molds, the head of the gate runner is connected with the submarine gate, two ejector rod holes are formed in the mold below the gate runner, and the two ejector rod holes are parallel and perpendicular to the gate runner. An ejector rod is arranged in each ejector rod hole; and the two ejector rods can synchronously jack up a submarine gate and a gate waste part in a gate runner while an injection product is ejected out. According to the ejection mechanism, the problems of ejection, bouncing and falling of the submarine gate waste part can be solved, the gate waste part can be ejected out in a balanced stress manner, the waste part can be conveniently clamped, the overall production efficiency is improved, the surface appearance of an injection product and the mirror surface of a mold are protected, and the product quality is improved.

The invention discloses an assembly type transverse strake supporting device and method suitable for being applied to narrow grooves. The device comprises assembly type transverse strake units, inter-plate supporting units and natural vibration type sedimentation units, wherein the assembly type transverse strake units are formed by splicing bottom insertion formworks and conventional splicing formworks, and the natural vibration type sedimentation units are fixedly installed on the surfaces of the assembly type transverse strake units. According to the invention, detachable division is carried out through the integrated transverse strake plate, and the fabricated transverse strake plate formed by the bottom insertion template and the conventional splicing template is realized, so that the problems that although the supporting effect can be realized by adopting an integrated supporting structure, independent customization is needed for supporting grooves with different depths and widths, the manufacturing cost is increased, and the construction cost is reduced are effectively solved. And loading, unloading and turnover are not convenient. In addition, the stiffening rib plates are all made of steel, and the technical problem that in a traditional method, steel-wood mixed plate rib plates are poor in strength is solved. In conclusion, the comprehensive performance of the transverse strake is greatly improved from the aspects of using convenience and supporting strength.

The utility model discloses a cable stripping device, comprising a frame, a frame, arc plates and a cutter, the frame is fixedly connected with the frame, the inner side of the frame is symmetrically provided with a plurality of arc plates, the arc plates are attached to a cable, and the cutter is slidably connected to the arc plates; the traction assembly is used for tensioning the cable; according to the utility model, cable conductors can be effectively prevented from being damaged.

According to the composite steel wire rope for mine hoisting and the manufacturing method of the composite steel wire rope, the center strand is made of the aramid fibers, meanwhile, the rope core strand formed by twisting the filaments formed by melting and drawing various high-strength fibers is twisted outside the center strand, and the strength and the tensile property of the composite rope core are greatly improved; and the high-toughness corrosion-resistant steel wire rope has good toughness and corrosion resistance, and is suitable for mine environments and high-load applications thereof. Meanwhile, a graphite fluoride coating is arranged outside the inner-layer strand, and a polytetrafluoroethylene coating is arranged outside the outer-layer strand, so that the friction among the inner-layer strand, the outer-layer strand, the filling strand and the special-shaped steel wires during use can be reduced, and the inner-layer strand and the outer-layer strand have excellent corrosion resistance; the inner-layer strands and the outer-layer strands can keep good performance in a severe environment; in addition, through filling of the filling strands and the special-shaped steel wires, the compactness of the steel wire rope is increased, the whole structure of the steel wire rope is firmer, tighter and more pressure-resistant, and the mechanical property of the steel wire rope is improved.

The invention discloses a durable composite steel wire rope material and a preparation method thereof. The preparation method comprises the following steps: step 1, preparing a steel wire; step 2, surface pretreatment; step 3, preparing a corrosion-resistant coating; step 4, adding wear-resistant particles; step 5, curing treatment; step 6, quality detection; the method has the advantages that a special formula and a preparation process are adopted, so that the steel wire rope can effectively resist the influence of factors such as abrasion, fatigue and corrosion in the long-term use process, the service life of the steel wire rope is greatly prolonged, safe operation of equipment and engineering can be ensured, and the service life of the steel wire rope is prolonged. Good toughness can also reduce local damage caused by accidental impact, the reliability of the steel wire rope is improved, the production process is easy to control, the production cost is reduced, the production efficiency is improved, environment-friendly raw materials and processes are adopted, pollution to the environment is reduced, the market competitiveness of products can be improved, and the steel wire rope is worthy of popularization and application. And reliable product guarantee is provided for users.

A laminated windable oil pumping polished rod and its manufacturing method and application, which are special in that: it comprises a plurality of thin steel sheets with a thickness of 0.2-0.3mm, a width of 50-75mm, and a length of ≥50m, with circular holes punched at both ends; the thin steel sheets are coated with anti-corrosion adhesive materials on both sides and neatly stacked together to form a high-strength thin steel laminate group with a tensile force of 8T-20T; the two ends of the high-strength thin steel laminate group are clamped between a laminate joint and a laminate pressure plate by fasteners passing through the circular holes; the laminate joint and the laminate pressure plate are hung; and two laminate joints are rotatably connected to a rotating male joint and a rotating female joint at one end away from the high-strength thin steel laminate group. The beneficial effects are: simple structure, low cost, flexible structure, high strength, and large tensile force; the stacked wound pumping rod is superimposed and wound on the reel, which can replace the existing rigid pumping rod in the well, and is easy to achieve dynamic sealing, no unbundling, no leakage, safe operation, good sealing, resistance to bending fatigue, and long service life; winding into a coil is convenient for transportation and storage, and the storage volume is small, which greatly reduces the size of the equipment.

The application discloses a metal rod welding device for fitness equipment production and relates to the technical field of metal welding. The device comprises a case, the upper surface of the case is fixedly provided with an operation table, the corners of the upper surface of the operation table are fixedly provided with supporting plates, the upper surface of each supporting plate is fixedly provided with a placing panel, a driving mechanism is arranged on the lower surface of the placing panel and used for controlling the rotation and clamping of two metal rods, a positioning mechanism is arranged on the surface of the placing panel and used for positioning the welding position of the two metal rods, the upper surface of the operation table is fixedly provided with a laser welding instrument, the output end of the laser welding instrument is located directly above the positioning mechanism, the outer side of the case is symmetrically welded with supporting frames, the top end of each supporting frame is fixedly provided with a guide ring, and the surface of the placing panel is provided with an arc-shaped track, so that the two metal rods can be tightly welded together.

The utility model belongs to the field of warp knitting machine yarn, and particularly relates to a warp knitting machine yarn breakage prevention mechanism which comprises a base and a guide roller. An adjusting mechanism is arranged on the base and comprises two sets of adjusting discs, the two sets of adjusting discs are fixedly connected to a connecting block, the connecting block is fixedly connected with a moving block, the moving block is in threaded connection to a threaded rod, and the top end of the threaded rod is rotationally connected with the inner wall of a long plate; a connecting rod is fixedly connected to the bottom end of the threaded rod, a first bevel gear is fixedly connected to the connecting rod, the first bevel gear is meshed with a second bevel gear, a rotating rod is inserted into the second bevel gear, a motor is fixedly connected to the left side of the rotating rod, and the bottom end of the motor is fixedly connected to a supporting frame; the supporting frame is fixedly connected to the base, the connecting block is slidably connected to the interior of a movable groove, and the movable groove is formed in one side of the long plate.

The invention relates to the technical field of dry quenching sealing, and discloses a dry quenching furnace coke loading sealing device and a using method thereof.The dry quenching furnace coke loading sealing device comprises a furnace cover, the bottom of the furnace cover is slidably connected with a dry quenching furnace, the outer wall of the dry quenching furnace is fixedly connected with a supporting frame, and when high-temperature and high-pressure gas in the dry quenching furnace continuously rises, the gas will push a pressed plate upwards to move; the hydraulic oil at the top of the pressed plate is extruded by the pressed plate, the hydraulic oil enters the sealing block through the first communicating groove, the sealing block is pushed to move to be tightly attached to the inner surface of the furnace opening, when the sealing block moves, the hydraulic oil can also push the sealing plate to move through the communicating hole, and it is avoided that when the sealing block stretches out, a gap is generated between the sealing blocks; by means of operation of the assembly, the sealing performance and firmness of the furnace cover and the dry quenching furnace mouth are improved, and the situation that the edge of the furnace cover is loosened in the continuous pushing process of high-temperature and high-pressure gas, and then the sealing performance of the furnace cover is affected is avoided.

The present invention relates to the technical field of aluminum profile conveying, specifically to a conveying device and a conveying method for aluminum profile production, including side panels, conveying components and counterweight components, wherein there are two side panels, which are symmetrically distributed front and back, the conveying component is located between the front and rear side panels, and the counterweight component is located between the two side panels. The conveying component drives the aluminum profile to be conveyed to the right, and the gravity of the counterweight component pulls the spur rack downward, and the spur rack moves downward to drive the spur gear meshing with it to rotate, and the rotation of the spur gear further drives the screw rod to rotate, and the rotation of the screw rod produces a thread thrust effect with the inner thread hole, and then the telescopic column slides along the inside of the telescopic slot to the outside, and the telescopic column then drives the positioning block to move together, and the front and rear positioning blocks move, thereby clamping the aluminum profile in the front and rear directions. Therefore, when there is a height difference in conveying, the aluminum profile will not slip, and the conveying effect is better.

The utility model discloses a kind of tensile-resistant packaging bags, including packaging bag body, tensile-resistant layer and heat preservation layer, the packaging bag body upper end face is fixedly installed with reinforcing edge, the reinforcing edge upper end face is fixedly installed with multiple rotating mat frames, the rotating mat frame inside of same side two is fixedly installed with handle by rotating mechanism collectively, the packaging bag body both sides outer wall is fixedly installed with side bag, the packaging bag body both sides inner wall is fixedly installed with multiple rubber strips.The utility model is through setting reinforcing edge, handle and tensile-resistant layer etc. component, by reinforcing edge, rotatable handle and tensile-resistant layer of polyester fiber material, from bag mouth, handle and bag body whole three aspects strengthen the tensile-resistant capacity of packaging bag, compared with traditional packaging bag, can withstand greater tension, effectively avoid tearing phenomenon, suitable for loading heavier goods.

The invention relates to the technical field of connecting pipe sealing, in particular to a light large-diameter connecting pipe sealing device. The light large-diameter connecting pipe sealing device specifically comprises a supporting plate, a tension brace assembly and a sealing cover. The tension brace assembly is connected with the sealing cover and the supporting plate, and the sealing cover covers the opening of the connecting pipe; the tension brace assembly comprises a sealing bolt, a pull rod body and a first nut, the sealing bolt penetrates through the sealing cover to be connected with the pull rod body, and the pull rod body penetrates through the supporting plate to be connected with the first nut; the supporting plate comprises a plate body, a plurality of flange parts and a plurality of concave parts, the flange parts and the concave parts are arranged around the edge of the plate body at intervals, the flange parts abut against the steps of the inner wall of the connecting pipe in a matched mode, the outer diameter of the flange parts is larger than the inner diameter of the inner wall of the connecting pipe, and the outer diameter of the concave parts is smaller than the inner diameter of the inner wall of the connecting pipe. The sealing structure has the advantage of being good in sealing effect.

The present invention relates to the field of photovoltaic cable technology, and discloses a photovoltaic cable processing equipment and operation method that can prevent rats and ants from biting, including a positioning ring, the surface of the positioning ring is fixedly connected to a support frame, and also includes: a winding component, the winding component includes a fixing rod, the end of the fixing rod is fixedly connected to the surface of the positioning ring, the inner wall of the positioning ring is fixedly connected to a connecting plate, and the end of the connecting plate away from the positioning ring and the end of the fixing rod away from the positioning ring are respectively fixedly connected to a positioning cylinder. The present invention is provided with a winding component at the end of the positioning ring, the winding component can wrap a protective layer around the surface of the photovoltaic cable to protect it, and the winding component can also limit the photovoltaic cable to improve the stability of the photovoltaic cable during processing, the winding component will push the pulling component to move up and down when running, and the pulling component will pull the photovoltaic cable to move toward the outer end of the coating component when moving up and down, to prevent the photovoltaic cable from being subjected to a large pulling force when winding.

The invention belongs to the field of charging piles, and discloses a charging pile gun line recovery device and method.The device comprises a telescopic assembly, a rotating shaft, a transmission gear, a supporting piece and a transmission assembly; the transmission assembly is fixedly installed at the upper end of the charging pile, the transmission gear sleeves the rotating shaft and is meshed with the transmission assembly, the two ends of the rotating shaft penetrate through the supporting pieces to be fixedly connected with the telescopic assembly, a gun line supporting rod is arranged on the side, away from the transmission gear, of the telescopic assembly, and a first motor is arranged in the transmission assembly. The first motor or the second motor rotates the gun wire supporting rod, the gun wire supporting rod is used for winding the charging pile gun wire, the telescopic assembly or the transmission assembly controls the gun wire supporting rod to rotate, the gun wire supporting rod rotates the charging pile gun wire in the rotating process, and the situation that the charging pile gun wire is abraded to the ground or is directly still on the ground is effectively reduced; the telescopic assembly or the transmission assembly controls the gun line supporting rod to rotate reversely, and it is guaranteed that a client with small strength can operate the gun line easily.

The utility model belongs to the field of gas density testing, and particularly relates to a packaging material gas density testing device which comprises a base, a sealing barrel is fixedly mounted at the top of the base, a sealing cover is arranged at the top of the sealing barrel, a vacuum connector is communicated with the right side of the top of the sealing cover, and an adjusting knob is fixedly connected to the top of the sealing cover. The adjusting knob is rotationally connected with the sealing cover, a pressing plate is arranged in the sealing barrel, and the bottom of the adjusting knob is fixedly connected with an adjusting mechanism. Through the structural design of the pressing plate and the adjusting mechanism, when the water level is low, the adjusting knob can be rotated to enable the pressing plate to move downwards, after the pressing plate moves downwards, the packaging material can be pushed to completely enter the water, and when the water level is high, the adjusting knob is reversed to enable the pressing plate to move upwards to enable the packaging material to completely enter the water. And the pressing plate can be suitable for scenes with different water levels, and the applicability of the pressing plate is improved.

This invention relates to a yarn dyeing device, comprising an immersion tank and a dewatering mechanism disposed on one side of the immersion tank. The dewatering mechanism includes a side plate fixed to one side of the immersion tank, and a tension adjustment component and a dewatering component are respectively disposed on the surface of the side plate. The dewatering component includes a squeeze roller rotatably disposed on the side plate and an upper fixed frame and a lower water collection hopper respectively fixed on the side plate. This invention relates to the field of yarn processing technology. This yarn dyeing device, with its movable but limited-stroke movable plate, can effectively buffer the yarn while squeezing it, preventing direct impact from causing yarn breakage or significant wear. During yarn squeezing, the movable plate relieves pressure, allowing for rapid dewatering of the yarn without interfering with normal conveying.