189 results about "Rubber membrane" patented technology

The invention discloses a special bottom plate drainer for a rubber membrane sealing type gas holder, which comprises a drainer body arranged above the liquid level of a water accumulation pool; one end of the inlet pipe is connected with the drainer body, and the other end of the inlet pipe is connected with a water outlet of a bottom plate of the gas holder; one end of the U-shaped pipe is connected with the drainer body; and the condensed water discharge port is used for discharging condensed water into the water accumulation pool, and the condensed water discharge port is connected with the other end of the U-shaped pipe. The drainer body is lifted to the position above the liquid level of the water accumulation pool from the bottom of the water accumulation pool, condensate water on the bottom plate is safely and efficiently drained, meanwhile, it is ensured that the drainer body cannot be soaked in the condensate water, and the service life of the drainer body is prolonged. The drainer body is lifted from the bottom of the water accumulation pool to the position above the liquid level of the water accumulation pool, so that people do not need to enter the water accumulation pool when the drainer body is cleaned, and the cleaning efficiency is greatly improved.

The invention discloses a precise temperature control fermentation device for tea production, and belongs to the field of tea production equipment.The precise temperature control fermentation device for tea production comprises a device body, an electric control box is fixedly installed on the side edge of the device body, and a plurality of supporting frames are arranged in an inner cavity of the device body at equal intervals; by means of the structure provided with the lifting rod, when the tea leaves are fermented for a certain time or the temperature in the middle is too high in the tea leaf fermentation process, the tea leaves in the middle can be pushed upwards, and then the tea leaves in the middle are dispersed to the periphery from the upper side through expansion of the lifting rod; by arranging a stacking plate and a rubber film, after the fermented tea leaves are subjected to heat dissipation, a linkage rod can drive the stacking plate to move towards the middle until the tea leaves are gathered to the middle, and then the fermented tea leaves can be stacked towards the middle by turning over a rotating motor.

The present invention relates to the technical field of photovoltaic cables, and more specifically, to a cold-resistant and ice-resistant cable for photovoltaic power stations. The cable comprises a conductor layer, an elastic insulating layer, and a protective layer arranged from the inside out. The cable further comprises a buffer assembly, and the buffer assembly comprises a fixed part and a movable part. In the present invention, when ice particles contact the surface of the cable, the graphene coating deforms inward, so that the impact of the ice particles is transmitted through the graphene coating to the rubber membrane layer, and the rubber membrane layer then drives the movable rod to move into the insulating tube. During the movement, the rubber membrane layer itself squeezes the outer shielding layer and the inner insulating layer, causing the outer shielding layer and the inner insulating layer to undergo elastic deformation, and the movement of the movable rod drives the connecting ring to move downward, and then pulls the auxiliary elastic ropes on both sides through the connecting ring, causing the auxiliary elastic ropes to undergo elastic deformation, further eliminating the impact of the ice particles, thereby achieving force unloading treatment of the impact and avoiding damage to the cable cortex.

The utility model discloses a transportation device for ceramic product production in the technical field of ceramic product transportation devices, which comprises a bottom plate, a box body is fixedly connected to the left side of the top of the bottom plate, a top cover is hinged to the rear of the top of the box body, a side plate is hinged to the bottom of the front of the box body, and a fixing mechanism is arranged in front of the right side of the box body. A connecting mechanism is arranged on the right side of the side plate, multiple sets of mounting plates are symmetrically arranged on the left side and the right side of an inner cavity of the box body, a sliding plate is slidably connected between the two sets of mounting plates, multiple sets of rubber membrane shells are arranged at the top of the sliding plate, and rolling wheels are arranged at the four corners of the bottom of the bottom plate; the problems that when the flat plates are taken out and installed, rotary knobs correspondingly arranged on the flat plates need to be rotated, operation is tedious, and when a user needs to take out ceramic products placed on the bottommost flat plate, two sets of flat plates on the top of the bottommost flat plate need to be taken out firstly, convenience is not enough, and applicability is poor are solved.

The invention belongs to the technical field of dual-power-supply switch boxes, and particularly relates to a dual-power-supply switching box which comprises a box body and a static change-over switch installed in the box body, flame-retardant partition plates and a cover plate are further installed in the box body, and the two flame-retardant partition plates are arranged side by side and used for dividing the inner space of the box body into three unit cavities; wiring assemblies used for allowing cables to penetrate through penetrate through the unit cavities, the cover plates are arranged at openings of the unit cavities, rubber films and butt clamps penetrate through the cover plates, the two butt clamps are arranged in pairs, and an elastic rope and a fire extinguishing bottle are arranged between the two butt clamps. During maintenance, the butt clamp is pulled by the elastic rope to clamp the wiring assembly so as to hang the cover plate and cover the unit cavity, so that external moisture is blocked. The three unit cavities are separated and sealed through the cover plates, each unit cavity is opened during maintenance, all switches are prevented from being exposed in a humid environment, the overall humidity resistance is improved, and the cover plates automatically fall off and are opened for heat dissipation by loosening the butt clamps during thermal runaway.

The invention discloses a high-temperature and high-pressure testing device for a rock test, and particularly relates to the technical field of rock testing, the high-temperature and high-pressure testing device comprises a shell, the inner surface of the shell is fixedly connected with a first partition plate and a second partition plate, and the upper end of the second partition plate is provided with a bagging assembly and a pushing steering assembly. According to the high-temperature and high-pressure testing device for the rock test, the bagging assembly is arranged, so that a rubber film bag can be tightly attached to the outer surface and the left end face of a cylindrical rock, and in a high-temperature and high-pressure test, the surface integrity and the structural stability of the cylindrical rock during the test can be maintained; the outer cylindrical surface seal can prevent scratch wear caused by friction and collision with test device components, the rock mechanical property and test result accuracy are guaranteed, the sealed end surface can prevent surface moisture evaporation and sun crack of porous or easily-weathered rocks due to environmental change, the rock structure is maintained to be stable, and the consistency of rock performance in the test process is guaranteed.

The invention belongs to the technical field of underwater construction and protection engineering, and discloses a grouting construction and flushing visual simulation system and method for underwater protection engineering, and the system comprises a circulating water flow part which comprises a water pump, a circulating water tank and a visual simulation water tank which are sequentially connected end to end through a water pipe; the centralized control part comprises a data control unit, a variable frequency controller for controlling the rotation of the water pump, a regulating valve, a flow meter, a grouting assembly and an underwater camera device which are electrically connected; the deformable base module comprises a plurality of electric telescopic supports distributed on the periphery of the basic model body and a flexible rubber film covering all the electric telescopic supports in a sealed mode. The system adopts an electric control closed-loop adjusting structure, can control the pump speed and the valve opening degree, realizes that the flow velocity fluctuation precision is controlled within + / -1%, and can simulate various dynamic flow fields; the deformable scouring foundation module can generate different bottom bed conditions according to test requirements, and the working condition reproduction capacity and adaptability of the system are greatly improved.

The utility model discloses a high-speed dispersion machine for preparing flame-retardant ecological synthetic leather based on solvent-free foaming, and relates to the technical field of synthetic leather preparation, the high-speed dispersion machine comprises a frame body, and a controller is arranged on the side wall of the frame body; the top of the frame body is fixedly connected with a top cover, and feeding ports for feeding are embedded in the front and rear ends of the top of the top cover; the top of the top cover is fixedly connected with a reducer; the driving end of the reducer is fixedly connected with the upper end of the stirring rod; the speed reducer is used for driving the stirring rod to rotate, while the stirring rod rotates, the electric push rod drives the piston plate to move, air is pressed into the connecting pipe, the stirring rod and a cavity in the transverse rod, the rubber film is expanded, and the expanded rubber film makes contact with the inner side wall of the frame body to extrude materials. The dynamic extrusion process contributes to further dispersion and mixing of the materials, and at the same time may promote chemical reaction or physical combination among the materials.

An elastic membrane having a physical property required for each portion of the elastic membrane and capable of uniformly polishing a workpiece is disclosed. The elastic membrane includes: a contact portion having a workpiece pressing surface for pressing a workpiece against a polishing surface; and a partition wall extending upward from the contact portion and forming a pressure chamber. The contact portion and at least a part of the partition wall are composed of a first rubber structure and a second rubber structure which are integrally formed, the first rubber structure has a first hardness, and the second rubber structure has a second hardness lower than the first hardness, the first rubber structure includes the workpiece pressing surface, and the second rubber structure includes the at least a part of the partition wall.

The utility model relates to a self-stabilizing type water plugging air bag which comprises an air bag body, one end of the air bag body is provided with a conical compression assembly, the conical compression assembly comprises a hinge ring and a plurality of steel rods hinged to the hinge ring in a radiation mode, and after the steel rods are evenly radiated, the two sides of the steel rods are connected with rubber films to form conical compression faces. The outer ends of the steel rods are connected with annular rubber sleeves, an inflation nozzle is arranged at the end, provided with the conical compression assembly, of the air bag body, the inflation nozzle is connected through an inflation pipe and then penetrates out of the hinge ring, and the inflation pipe is connected with the hinge ring in a sealed mode. The utility model discloses can block the inspection well upstream and also can block the inspection well downstream, and can realize self-stabilization limit, use scene is wide, safety and reliability are high.

The utility model discloses an auxiliary rubber diaphragm feeding mechanism, and relates to the technical field of rubber processing. Comprising a bottom plate, a round opening and a rectangular opening are formed in the bottom plate, a flange is fixedly connected to the top of the bottom plate and located above the round opening, a limiting barrel is fixedly connected to the top of the flange, a spring is fixedly connected to the inner wall of the limiting barrel, and a guide piece is fixedly connected to the end, away from the limiting barrel, of the spring; the guide sheet is arc-shaped; a driving mechanism is arranged on the bottom plate, and a feeding mechanism is arranged at the bottom of the bottom plate. During feeding, the push plate moves upwards to extrude the guide piece to enable the spring to contract, the arc-shaped guide piece is utilized to ensure that the rubber diaphragm is always located in the center of the push plate, the feeding precision of the rubber diaphragm is greatly ensured, the machining quality of the rubber diaphragm is further improved, the equipment is high in automation degree, errors caused by manual operation are effectively reduced, and the production efficiency is improved. And the production efficiency is improved, and the yield is high.

The utility model discloses a magnetorheological sound insulation cotton damping with anti -interference structure relates to sound insulation material technical field, including sound insulation cotton layer and anti -interference structure layer. The composite electromagnetic shielding layer of the magnetorheological sound insulation cotton damping with anti -interference structure outermost layer is alternately woven composite by nanometer copper net and graphene film, can be all -round shielding to electromagnetic interference, creates stable electromagnetic environment for the inside magnetorheological liquid filling cavity, effectively avoids the outside electromagnetic signal interference magnetorheological liquid response to the magnetic field, guarantees its rheological characteristic stable play, the three -dimensional shock attenuation layer of inner layer adopts the even arrangement of hexagonal honeycomb -like elastic rubber film and viscoelastic damping block, and is matched with interval distribution's shock attenuation spring and shock attenuation rubber block, can form multistage shock attenuation system, effectively absorbs and buffers mechanical vibration, greatly reduced the influence of outside vibration to sound insulation cotton layer and magnetorheological liquid filling cavity, has improved the reliability of product under complex vibration environment significantly.

The utility model discloses an on-line sampling device which comprises a sampling bottle, a needle valve, a lifting mechanism and a bottle positioning mechanism, the bottle opening of the sampling bottle is provided with a bottle cap with a rubber film, the needle valve comprises a valve body, a needle type adapter and a sampling needle, the valve body is arranged on a conveying pipeline, and the sampling needle is arranged at a sampling opening of the valve body through the needle type adapter; the lifting mechanism is arranged right below the sampling needle and comprises a lifting table and a driving part which is arranged below the lifting table and is used for driving the lifting table to do lifting motion; the bottle positioning mechanism is arranged on the lifting mechanism and comprises a bracket arranged on the lifting table and a profiling cover arranged over the bracket and matched with the upper portion of the sampling bottle, and the profiling cover is movably connected with the bracket through a hasp piece to form a cavity used for fixing the sampling bottle. The bottle positioning mechanism is arranged on the lifting mechanism, so that self-feeding and self-discharging of the sampling bottle are achieved, non-contact automatic sampling is completed, leakage of dangerous chemicals is reduced, damage to operators is reduced, and sampling is convenient, rapid, safe and reliable.

The invention relates to the technical field of loess area rock soil testing, and particularly discloses an indoor physical model test system for loess collapsibility research, which comprises a base, at least one subsidence device is arranged on the upper side of the base, the subsidence device comprises a cylindrical mold and a load device, the cylindrical mold is filled with a soil body, and the load device is arranged in the cylindrical mold. The load device applies load to a soil body from an opening in the upper side of the cylindrical mold, the cylindrical mold comprises a supporting ring and a bottom plate, and a cylindrical rubber film cylinder is fixedly connected between the bottom plate and the supporting ring; a plurality of protection plates are arranged on the outer side of the rubber membrane cylinder in an annular array mode and pulled outwards through a tensioning device; and sheet-shaped first pressure sensors are arranged on the inner cylinder wall of the rubber membrane cylinder at intervals. The soil body is filled in the rubber membrane cylinder, after the soil body is immersed into a set amount of water, a load is applied above the soil body through the load device, the outer side of the flexible rubber membrane cylinder is pulled to deform so as to be matched with subsidence deformation of the soil body, and the environment of lateral pressure borne by the soil body underground is simulated, so that the research on the collapsibility of the soil body is more practical.

The utility model relates to waste water purification reactor technical field, and disclose a kind of chemical wastewater purification reactor, including aeration assembly, still including two transmission assemblies, several clamping assemblies, aeration assembly includes aeration pipe, microporous rubber membrane, air inlet head, sealing head, microporous rubber membrane sliding sleeve is connected on aeration pipe, air inlet head and sealing head are respectively arranged at the both ends of aeration pipe;The utility model, microporous rubber membrane sleeve is connected on aeration pipe, then air inlet head and sealing head are respectively screwed into the both ends of aeration pipe, then respectively clockwise rotate two rotating rings, drive clamping plate to slide towards microporous rubber membrane and extrude microporous rubber membrane to recess, when all clamping plate slides to mutual contact, microporous rubber membrane can be fastened on aeration pipe, compared with using clamp fixed, without the aid of auxiliary tool and easy to operate, improve the convenience of installation and disassembly microporous rubber membrane.

The invention discloses a natural rubber antibacterial film with photothermal conversion performance and a preparation method thereof, and the specific method comprises the following steps: firstly preparing paint oil emulsion under the assistance of saponin and Tween-80, then uniformly mixing honey, fulvic acid and the paint oil emulsion, adjusting the pH value by using an alkaline solution, then adding a mixed solution of natural latex, saponin and Tween-80, and uniformly stirring to obtain the natural rubber antibacterial film with photothermal conversion performance. Finally, the natural rubber antibacterial film with the photo-thermal conversion performance is obtained through a pouring film forming method and a drying oven drying method. The method is ingenious in conception and simple in process and operation, uniform distribution of components in the film is promoted by means of the encapsulation wrapping effect of the surfactant and the high viscosity of the honey, the film is endowed with the antibacterial performance by means of the lacquer and the honey, and the film is endowed with the photothermal conversion performance by means of the fulvic acid and the honey; the problems that a single natural rubber material is poor in antibacterial property and poor in photothermal conversion performance are effectively solved. The main raw materials in the natural rubber film are high in safety, wide in source and low in price, so that the application range of the film is wide.

The application discloses a kind of express waybill printing assembly lines, including frame body, the frame body is provided with multiple groups of material conveying line and is respectively conveyed by its driving device support net, back type hollow rubber membrane layer, express waybill layer and release layer, the material conveying line includes material conveying line one, material conveying line two, material conveying line three, material conveying line four and material conveying line five, the express waybill of the printing assembly line finished product obtained by the application can be conveniently torn and pasted under the action of L type hollow rubber membrane, and is pasted more smoothly and tightly under the action of its support net, the release layer adhered to express waybill layer has certain toughness in use, and is not prone to fracture and sticking phenomenon, further improve the quality and use effect of such express waybill.

The application discloses a one-way backflow-preventing condensate water treatment device for a vehicle air conditioning system and a use method thereof, and relates to the technical field of vehicle air conditioning condensate water treatment. The device is used to solve the problem that, when the existing vehicle air conditioner is cooling, condensate water is generated, flows out from the air conditioner drain pipe, and is naturally discharged along with gravity and drips to the ground. However, if the vehicle is involved in water, the condensate water discharge port may be blocked by silt in the water, and the condensate water may flow back into the cab. The device comprises a first sealing element housing, a second sealing element housing is arranged below the first sealing element housing, and the first sealing element housing and the second sealing element housing are welded into an integrated whole. The device further comprises a rubber diaphragm arranged inside the second sealing element housing, a diaphragm groove is arranged at the middle position of the rubber diaphragm, a diaphragm protrusion is arranged at the middle position of the outer wall of the rubber diaphragm, and a cross block is arranged at the upper end of the diaphragm protrusion.

The utility model relates to an engine active suspension which comprises a connecting shaft, a connecting shell, an upper shell and a lower shell, a rubber main spring is connected between the connecting shell and the upper shell in a vulcanization mode, a channel support is further installed in the upper shell, a vibrating diaphragm is installed in the middle of the channel support and comprises a rubber diaphragm on the edge and a decoupling disc in the center, and the rubber diaphragm is connected with the lower shell in a vulcanization mode. The bottom of the decoupling disc is provided with an actuator in a threaded mode, a shaping ring is further arranged at the connecting position of the rubber membrane and the decoupling disc, and a plurality of limiting structures are arranged on the upper portion and the lower portion of the shaping ring correspondingly. The sliding block can be limited to only slide up and down through the vertical shaft, and the sliding block is connected with the shaping ring in the vibrating membrane through the connecting rod; therefore, the vibrating diaphragm can be limited to only generate longitudinal wave vibration up and down, the actuator can be ensured to stably generate action cooperation, the influence on the actuator can be reduced, and the service life is prolonged.

The present application discloses a diaphragm of a sound-generating device and a sound-generating device. The diaphragm includes at least one modified ethylene-vinyl acetate rubber membrane layer, which is prepared by mixing inorganic hollow microspheres, additives, and ethylene-vinyl acetate polymer to form a mixed rubber and then cross-linking the mixed rubber; the particle size of the inorganic hollow microspheres is 1 μm to 60 μm, and the distribution density of the inorganic hollow microspheres in the modified ethylene-vinyl acetate is 0.15 g / cm 3 ~0.9g / cm 3 The modified ethylene-vinyl acetate rubber membrane layer has a loss factor of ≥0.11 after being baked at 150°C for 168 hours. The diaphragm of the present application is made by cross-linking a modified ethylene-vinyl acetate rubber membrane layer prepared by mixing inorganic hollow microspheres, additives, and ethylene-vinyl acetate polymer to form a rubber mixture. This not only improves the mid-frequency sensitivity of the sound-generating device, but also ensures that the diaphragm material still has excellent damping performance in high-temperature environments.

The application relates to the technical field of water-isolating thawing, and discloses a water-isolating thawing clamp which comprises a first main body, a second main body and a connecting structure, the first main body comprises a first frame body and a first natural rubber film, the first natural rubber film is located on the inner side of the first frame body, and the outer edge of the first natural rubber film is embedded on the first frame body; the second main body comprises a second frame body and a second natural rubber film, the second natural rubber film is located on the inner side of the second frame body, the outer edge of the second natural rubber film is embedded on the second frame body, the second main body is oppositely arranged with the first main body, and the first natural rubber film and the second natural rubber film are used for placing thawed objects; and the connecting structure is used for connecting and compressing the first main body and the second main body. The water-isolating thawing clamp can be attached to and seal thawed objects when being placed in thawing liquid, so that the thawed objects and the thawing liquid are isolated and thawed, the sealing quantity is reduced, and the production cost and the use failure rate are reduced.

The utility model discloses an edema volume measuring device, which comprises a measuring device body and a support adjusting mechanism, the measuring device body comprises a fixed cylinder, the fixed cylinder is connected with a lifting cylinder, the lifting cylinder is jointed and sleeved inside the fixed cylinder, the end part of the fixed cylinder connected with the lifting cylinder is provided with a threaded section, and the threaded section is connected with the lifting cylinder. The lifting cylinder is slidably sleeved with the fixing cylinder, the length of the measuring device body is changed by changing the position of the lifting cylinder in the fixing cylinder, adjustable measurement of the upper limbs and the lower limbs of a person is achieved, and the measuring device is convenient to use and high in practicability. The threaded section and the connecting nut are arranged at the end part of the fixed cylinder to realize closed connection, and the rubber film is arranged at the end part of the fixed ring, so that the edema limb of the human body extends into the lifting cylinder through the rubber film with elastic ductility, and infection caused by direct contact between the edema limb part of the human body and water during measurement is avoided.

The invention provides a composite flexible plate with bulletproof performance and high flexibility and a preparation method thereof, and relates to the technical field of materials. The composite flexible plate with bulletproof performance and high flexibility is prepared by stacking and paving multiple layers of single-layer prepregs and then carrying out hot press molding. Wherein the single-layer prepreg is formed by compounding an aramid fabric and a modified rubber film covering at least one surface of the aramid fabric. The modified rubber film melts, flows and adheres to the adjacent single-layer prepreg in the hot pressing process, so that the composite flexible plate has the bulletproof performance and meanwhile keeps the characteristic of being capable of being bent at will.

The utility model discloses a wafer-based polishing head and wafer polishing equipment, and relates to the technical field of wafer polishing equipment, the wafer-based polishing head comprises a first assembling seat and a second assembling seat which are connected with each other, and the bottom surface of the second assembling seat is provided with an assembling groove; the pressurizing disc is connected with the second assembling seat in a sliding manner, and the pressurizing disc and the assembling groove form a first cavity; the elastic rubber film and the pressurizing disc form a second cavity; and the adsorption pad is arranged on the bottom surface of the elastic rubber film. And the first air pressure pipe is communicated with the first cavity and the second cavity. According to the polishing head based on the wafer and the wafer polishing equipment, the technical problem that the PV value of a product is affected due to the fact that the positive pressure borne by the edge of the wafer is smaller than the positive pressure borne by the center area of the wafer and the removal amount of the edge of the wafer is insufficient is solved, the pressurizing disc is additionally arranged in the cavity, the positive pressure borne by the edge of the wafer is larger than the positive pressure borne by the center area of the wafer, and the product yield is improved. Therefore, the removal amount of the edge of the wafer is improved, and the achievement of a PV value index is ensured.

The utility model discloses high-strength air bag cloth, which belongs to the field of air bags and comprises first silica gel cloth, a first reinforcing layer, a rubber diaphragm layer, a second reinforcing layer and second silica gel cloth, a plurality of first transverse strips and first vertical strips are arranged in the middle of the first reinforcing layer, and a plurality of second transverse strips and second vertical strips are arranged in the middle of the second reinforcing layer. The first reinforcing layer is arranged between the first polyurethane cloth and the rubber diaphragm layer, the second reinforcing layer is arranged between the rubber diaphragm layer and the second polyurethane cloth, the first reinforcing layer generates tensile force and elastic force through the first transverse strip and the first vertical strip, and the second reinforcing layer generates tensile force and elastic force through the second transverse strip and the second vertical strip. The strength of the air bag cloth can be further improved, the elasticity is better than that of a multi-layer structure in the market, and the strength is higher than that of a single-layer structure.

The utility model discloses a portable geological drilling water sample collecting device, which comprises an inner support and a rubber membrane, the rubber membrane covers the outer part of the inner support, the inner support comprises a plurality of fixed cross rods and a central shaft, each fixed cross rod is sleeved with an expansion rod in a sliding manner, the outer end of each expansion rod is connected with the rubber membrane, and the central shaft is connected with the rubber membrane. The expansion rod is connected with the control main rod through the hinged supporting rod, and after the control main rod is pulled up and down, contraction or expansion of the rubber film can be achieved through the expansion rod, so that expansion during use can be achieved, the stored sampling water amount can be increased, and the portability during transportation can be improved after contraction; in addition, the stainless steel sheets are arranged in a matched mode, a certain anti-abrasion protection effect can be achieved during contraction, and the service life is prolonged.

The application discloses a kind of bionic underwater suction cup probe robots of paddlefish type, and technical solution points are as follows: bionic paddlefish robot, the tail of bionic paddlefish robot is movably connected with tail wing;When using, it can be slightly raised by electric push rod to the rubber membrane, when the suction cup ring is attached to the surface of animal, it is reset by electric push rod to pull rubber membrane, so that the effect of preliminary adsorption installation is achieved, at this time, it can be rotated by opening drive motor to drive cross bar, so that rubber spike is in vertical state and pierces the surface of animal, cooperate drive motor to shrink rubber membrane, at this time, the space in air cavity is larger, pressure decreases, the pressure difference between inside and outside makes the device closely attached to the surface of animal, the movement of the animal followed, water flow will flow out from drain hole through water inlet, in the process, it will drive impeller to rotate, generate electricity by hydraulic generator to charge battery to increase its endurance, by drainage plate for increasing the stability of water flow discharge, prevent turbulence from causing shaking.

The present invention discloses a high-temperature and high-pressure testing device for rock testing, which specifically relates to the field of rock testing technology, and includes a shell, wherein the inner surface of the shell is fixedly connected to a partition plate 1 and a partition plate 2, respectively, and the upper end of the partition plate 2 is respectively provided with a bag assembly and a push-steering assembly. The high-temperature and high-pressure testing device for rock testing described in the present invention is provided with a bag assembly so that the rubber membrane bag can be tightly attached to the outer surface and the left end face of the cylindrical rock. In the high-temperature and high-pressure test, the surface integrity and structural stability of the cylindrical rock during the test can be maintained. The outer cylindrical surface seal can prevent scratches and wear caused by friction and collision with the test device components, thereby ensuring the mechanical properties of the rock and the accuracy of the test results. Sealing one end face can prevent porous or easily weathered rocks from evaporating and cracking due to environmental changes, thereby maintaining the stability of the rock structure and ensuring the consistency of the rock performance during the test.

The invention discloses a coal mining dust fall device based on environmental protection engineering, and relates to the technical field of environmental protection dust fall equipment, the coal mining dust fall device comprises a fog gun barrel, and further comprises a movable opening assembly and a spray head assembly; the movable opening assembly comprises a plurality of movable plates connected to an opening of the fog gun barrel through hinges, a rubber diaphragm is fixedly connected between every two adjacent movable plates and the fog gun barrel, a limiting sliding groove is formed in each movable plate, and a sliding block is slidably installed in each limiting sliding groove; dynamic adaptation of water flow can be achieved, specifically, when the angle of the movable plate changes, the arc head rod is extruded to push the abutting ring to move, and the sector plate and the macromolecule polymer film are opened and closed in a self-adaptive mode under the action of the reset spring. When the opening is expanded, the high-molecular polymer film is unfolded to the maximum opening degree, and the water yield per unit time is increased; when the opening is shrunk, the triangular convex ribs are matched with the sinking grooves to limit the opening degree of the high-molecular polymer film, the water amount is reduced, and the atomization particle size is maintained.

The invention discloses a gravel cleaning device for concrete processing, and relates to the technical field of concrete processing, and the gravel cleaning device is technically characterized by comprising a cleaning box and a base fixedly mounted on the inner wall of the cleaning box, guide columns are fixedly mounted at the four corners of the top of the base, and sliding rails are slidably connected to the guide columns; a guide column is arranged on the base, a sliding rail is arranged on the guide column, a telescopic spring arranged on the outer side of the guide column is fixedly installed between the base and the sliding rail, a gravel containing box is connected to the sliding rail in a sliding mode, and a plurality of friction beads are arranged in an inner cavity of the gravel containing box.By arranging the vibration motor, the friction beads and the telescopic spring, gravel and the friction beads are fully collided and rubbed, and impurities can be stripped without a large amount of clear water; the problems of frost crack of equipment in winter in the north, freezing of sand and gravel and shortage of water resources or high water taking and transportation cost in water-deficient areas are solved; and meanwhile, the rubber membrane vibrates to extrude air in the suction box, exhaust of air with silt is promoted, air purification is achieved in cooperation with the air inlet one-way valve, the exhaust one-way valve and the detachable purification box, and flying dust pollution is avoided.