15results about How to "Improve sealing effect" patented technology

The invention relates to the technical field of degradable high polymer materials and disposable personal care products, and discloses a preparation process of a degradable high-barrier plastic film for a hair dyeing shawl, and the preparation process comprises the following steps: 1, preparing chitosan-dopamine grafted modified montmorillonite (CTS-DA-MMT): dispersing 5g of 20-30nm nano montmorillonite in a 2wt% acetic acid solution, and ultrasonically dispersing for 40 minutes by 200W; adding dopamine hydrochloride according to the ratio of montmorillonite to dopamine being 1: 0.2, adjusting the pH value to 8.5 by using 1mol / L NaOH, and carrying out stirring reaction at room temperature for 1 hour; adding chitosan according to the ratio of montmorillonite to chitosan being 1: 0.4, and stirring and reacting at the constant temperature of 50 DEG C for 3 hours; the pH is adjusted to 7.0 through 1 mol / L HCl, centrifugation is carried out for 15 min at the speed of 8000 r / min, washing is carried out three times through deionized water, vacuum drying is carried out for 8 h at the temperature of 60 DEG C, and the product is obtained. According to the preparation technology of the high-barrier plastic film for the degradable hair dyeing shawl, chemical grafting (instead of physical blending) of montmorillonite-dopamine-chitosan is achieved through catechol groups of dopamine, the problems of montmorillonite agglomeration and matrix compatibility are solved, and the degradable hair dyeing shawl is prepared. Meanwhile, through the dynamic adhesiveness of dopamine, the problem of barrier failure under dynamic stretching is solved.

The utility model discloses a sealing device for a finished horse food packaging bag, which comprises a mounting seat and is characterized in that a base is fixedly connected onto the mounting seat, a supporting arm is fixedly connected onto the base, a second clamping plate is fixedly connected onto the supporting arm, a first cylinder is fixedly connected onto the base, and a piston rod of the first cylinder is fixedly connected with a first clamping plate. The bottom of the base is fixedly connected with a second cylinder, a piston rod of the second cylinder is fixedly connected with a top plate, the top of the mounting base is fixedly connected with a fixing frame, the fixing frame is fixedly connected with a lead screw sliding table, and a sliding table of the lead screw sliding table is fixedly connected with a sealing machine through an adapter; the sealing device has the advantages that manual sealing treatment is not needed, dangerousness is reduced, the clamping plate is matched with the top plate, wrinkles at the sealing position can be eliminated, and the number sealing effect is improved.

The utility model relates to the technical field of horizontal screw centrifuges, in particular to an anti-leakage device of a horizontal screw centrifuge, which comprises a casing, a connecting seat is fixedly connected to the lower part of the outer surface of the casing, L-shaped mounting plates are fixedly connected to the front and rear parts of the lower end of the connecting seat, and three first screws are inserted into the inner wall surfaces of the two L-shaped mounting plates. A plurality of threaded holes are formed in the right end of the machine shell, a first sealing ring is fixedly connected to the inner wall face of the machine shell, a second sealing ring is arranged in the first sealing ring in a sleeved mode, and a clamping ring is fixedly connected to the inner wall face of the second sealing ring. According to the anti-leakage device of the horizontal screw centrifugal machine, the first sealing ring and the second sealing ring on the inner wall of the machine shell form a multi-layer barrier, the clamping ring is matched to be connected with the clamping ring groove of the rotary drum in a clamped mode, the sealing fitting degree is enhanced, and double sealing can still effectively prevent materials from leaking; and resource waste, environmental pollution and potential safety hazards caused by sealing failure are reduced.

The utility model discloses a hydraulic hose with a leak-proof function at a joint, which comprises two hydraulic hose bodies, and a leak-proof connecting mechanism is mounted between the two hydraulic hose bodies. The leakproof connecting mechanism comprises a sealing connecting assembly fixedly arranged on the two hydraulic hose bodies in a sleeving mode, and sealing between the two hydraulic hose bodies is achieved through the sealing connecting assembly; and the wrapping and sealing assembly is arranged on the sealing and connecting assembly in a sleeving mode and used for conducting sealing and wrapping on the sealing and connecting assembly. Through the arrangement of a series of structures, effective sealing between the two hydraulic hose bodies can be achieved in the mode that the joint of the two first sealing rings is sealed and wrapped through extrusion fit of the first sealing rings, the sealing effect is improved, and the leakage prevention purpose is achieved.

The utility model belongs to the technical field of charging pile cable protection, and discloses a cable sealing and fixing device and a charging pile. The cable sealing and fixing device comprises a shell, a fixing assembly and a locking assembly. The shell comprises a shell body and a partition part, a cavity is formed in the shell body, the partition part is arranged in the cavity, the partition part and the shell body can define at least one fixing cavity, the shell body is provided with at least one opening communicating with the fixing cavity, and the fixing assembly is detachably connected into the fixing cavity. One side, facing the partition piece, of the fixing assembly and the partition piece define a filling cavity, the filling cavity can be filled with pouring sealant, one end of the locking assembly penetrates through the opening and is connected to the fixing assembly in a limiting mode, the other end of the locking assembly can abut against the shell body, a cable is arranged in the locking assembly in a penetrating mode, and one end of the cable is connected with the partition piece in a sealed mode. According to the cable sealing and fixing device and the charging pile provided by the utility model, the fixation and sealing of the cable are protected in a sectional manner, so that the sealing and fixing effects of the cable can be improved.

The utility model relates to the field of fire-fighting equipment, concretely relates to a fire engine pressure relief tank, including setting the tank lid on the tank mouth department of tank body, the tank lid includes the apron, the apron is equipped with the boss part to the one side of tank body, be equipped with the cavity between the boss part with the apron, the tank lid is vertically equipped with the elastic connecting rod, the elastic connecting rod one end is connected with the tank lid, the other end swing joint has the pressure arm, the lateral wall of tank body tank mouth is equipped with the mounting seat, the mounting seat is vertically connected with horizontal rotary seat, horizontal rotary seat can carry out horizontal rotation on the mounting seat, the pressure arm one end is hinged with horizontal rotary seat, the other end is connected with the tank mouth department of tank body and is connected, compared with traditional pressure relief tank, the utility model can realize the self -adaptation pressure -relief through the cavity in the tank lid and the cooperation of elastic connecting rod, has reduced the risk that the tank body breaks down due to the pressure is too big in the pressure relief tank.

The present application relates to a kind of pipeline local damage area permeability detection device, including walking car, walking car top is equipped with first adjusting mechanism, first adjusting mechanism is connected with image acquisition element to adjust the position and posture of image acquisition element, walking car is connected with permeability detection mechanism located in the front end of walking car by second adjusting mechanism, permeability detection mechanism includes cylinder, cylinder both ends are equipped with air bag, cylinder part between two air bags is equipped with water outlet, one-way valve is equipped at water outlet, water outlet is connected with first water injection pipe, the detection device of the present application realizes the permeability detection of pipeline local damage area.

The utility model discloses a brake hard pipe that good sealing, include: sealed connecting sleeve, the inside one end of sealed connecting sleeve is provided with metal brake pipe no.

The invention discloses a sealing connection device for a salt spray test environment box and a test fixture, and relates to the field of sealing of salt spray test equipment. The invention aims to solve the technical problem of slow permeation of salt liquid at multiple positions in the existing sealing connection device. Hook groove type clamps are arranged on the upper end face and the lower end face of a sealing flange structure; a groove is formed in the upper end face of the lower flange, used for containing the first sealing rubber ring, the second sealing rubber ring and the third sealing rubber ring and connected with the lower end face of the lower flange of the telescopic corrugated pipe, the sealing sleeve is arranged in a center hole of the lower flange in a sleeved mode, and the lower flange (1) is fastened to the test fixture through the fastening nut. The center hole of the lower flange, the sealing sleeve and the end face of the test fixture are sealed, and the upper flange of the telescopic corrugated pipe is connected with a connector of the salt spray test environment box and fastened through a hook groove type clamp. The sealing device is used for sealing connection of the salt spray test environment box and the test fixture.

The utility model relates to vertebrate's feeding or breeding technical field especially relates to earthworm seedling transfer case for earthworm breeding. The utility model discloses a back type frame, back type frame is two, and four ends between two back type frames are fixed with support column, and the both ends of back type frame are slidably connected with connecting plate, and the right end of one connecting plate is fixed with U type connecting block and sealed clamping block, and the outside of sealed clamping block is slidably connected with another connecting plate, and the right end of U type connecting block is slidably connected with another connecting plate. The utility model provides an earthworm seedling transfer case for earthworm breeding, and two connecting plates are moved in the direction of moving away from each other by pulling, so as to conveniently concentrate on the earthworm and soil in the transfer case and take out, thereby fast increasing work effect.

The invention discloses intelligent biogas membrane purification skid-mounted equipment which comprises a biogas purification skid body, a conveying structure arranged on the biogas purification skid body, a positioning structure connected to the conveying structure and a fixing structure arranged on the positioning structure. According to the scheme, through the adaptive design of the butt joint disc, the matching of the positioning column and the guide plate and the action of the rotating rod and the pressing plate, rapid and accurate butt joint of pipelines in the biogas purification skid-mounted equipment is achieved, the operation time of pipeline assembly is greatly shortened, the stability and the sealing effect of pipeline connection are enhanced, and the service life of the pipelines is prolonged. The problems of dislocation and leakage easily occurring in traditional pipeline connection are effectively avoided, meanwhile, the attaching sealing performance of the pipeline and the mounting sleeve is further improved through the arrangement of the rubber pad, and the safety of the biogas conveying process is guaranteed.

This utility model relates to the field of pressure controller testing technology, and discloses a pressure testing device for a pressure controller in a water pump supply system. The device includes a base with a three-way flow channel inside. A connecting pipe is fixedly connected to the back of the base. Both ends of the three-way flow channel extend upwards through the base. A standard pressure gauge is fixedly connected to the right end of the three-way flow channel. An internally threaded cylinder is fixedly connected to the right side of the upper surface of the base. An installation cylinder is installed inside the internally threaded cylinder, and an externally threaded cylinder is fixedly connected to the outside of the installation cylinder. An air hole is provided on the bottom surface of the installation cylinder. In this utility model, through the cooperation of the internally threaded cylinder, installation cylinder, externally threaded cylinder, air hole, elastic band, and adjusting components, the pressure controller can be installed by insertion and automatic pressing, avoiding wear at the connection between the bottom of the pressure controller and the base, extending the service life of the testing device, and reducing wear on the pressure controller.

The utility model relates to a kind of anti-seepage water-stop structures for water conservancy and hydropower engineering, belong to water conservancy and hydropower engineering technical field.The anti-seepage water-stop structure for water conservancy and hydropower engineering, including: door frame and the gate slidingly connected in door frame, drive mechanism is arranged between the gate and door frame;The anti-seepage mechanism includes the sealing block fixedly connected in the bottom of gate, the bottom of door frame is provided with sealing seat, sealing assembly is arranged between the sealing block and sealing seat;Sealing block and sealing seat are arranged between the bottom of gate and door frame in the device.When gate is closed, sealing block is inserted into sealing seat, and the water stored in sealing seat can be forcedly discharged from the drain port opened in bottom.The water flow discharged will wash away accumulated silt, thereby ensuring the smooth and clean of the contact surface between the bottom of sealing block and the inner bottom wall of sealing seat.This not only effectively reduces the abrasion of sealing contact surface by silt, but also greatly enhances the sealing fit when gate is closed.

The invention discloses a sealing connection structure between a float glass tin bath and a tin bath edge seal, which comprises a top cover steel structure side plate, a bath bottom steel structure bottom shell steel plate and the tin bath edge seal, the lower part of the outer side of the top cover steel structure side plate is used for mounting a first angle steel, and the lower part of the inner side of the top cover steel structure side plate is used for mounting a second angle steel; the upper portion of the second angle steel is used for installing breast wall bricks, the upper portion of the outer side of the tank bottom steel structure bottom shell steel plate is used for installing third angle steel, the inner side of the tank bottom steel structure bottom shell steel plate is used for installing tin bath bottom bricks, a certain gap is reserved between the breast wall bricks and the tin bath bottom bricks, and an installation space used for installing tin bath edge seals is formed. The tin bath edge seal comprises an edge seal peripheral part located on the outer side of the tin bath and an edge seal body located in the installation space, the edge seal peripheral part is matched with the first angle steel or the third angle steel in an inserted mode, and sealing connection between the tin bath and the tin bath edge seal is achieved. According to the invention, the usage amount of sealing cement and the manual workload can be reduced, the sealing property of the tin bath can be improved, and the defects of the produced glass plate can be reduced.

This invention discloses a method for forming ultra-thin stainless steel pipe fittings, relating to the field of stainless steel pipe production and processing technology. It aims to solve the problems of branch pipe rupture and inner wrinkling during the current hydroforming process of ultra-thin stainless steel pipe fittings. The method includes: S1: billet preparation and pretreatment; S2: mold and sealing assembly; S3: staged collaborative forming; S301: pre-expansion and mold-fitting stage, where the internal pressure is increased to 0.8 MPa at a rate of 0.1 MPa / s and maintained stably; S302: main forming precise material replenishment stage, employing a gradient pressure increase strategy; S303: forming stress release stage, maintaining a stable internal pressure of 6-7 MPa for 10 seconds to ensure the billet completely fits the mold cavity, followed by a staged pressure relief method. This invention, through the application of a nano-lubricating film coating on the inner wall of the billet, low-temperature preheating treatment, stress-dispersing mold design, and the collaborative control of gradient pressure increase and real-time monitoring and material replenishment during the main forming stage, achieves effective dispersion of tensile stress concentration at the top of the branch pipe of the ultra-thin stainless steel pipe fitting and precise material replenishment, significantly reducing the risk of rupture.