13results about How to "Suppress escape" patented technology

The utility model discloses a powder collection device of powder coating powder outlet, which aims to solve the technical problem that the existing laboratory sample printing small capacity high speed mixer lacks a dustproof mechanism in the powder collection process of the powder outlet, and the dust of the powder coating may be inhaled by the human body, which may cause respiratory tract irritation or long-term lung disease. The utility model discloses a high speed mixer, a mixing barrel arranged on the top of the high speed mixer, a lower drive motor group fixedly connected to the center of the bottom surface of the mixing barrel, a hinged barrel cover arranged on the edge of the top of the mixing barrel, a discharge channel fixedly arranged on the edge of the bottom surface of the mixing barrel, a manual discharge door fixedly arranged on the inlet of the discharge channel and a receiving barrel. The discharge channel comprises a discharge port. The discharge port is detachably sleeved with a first dustproof cloth and a second dustproof cloth which are through from top to bottom. The first dustproof cloth is located outside the second dustproof cloth. The first dustproof cloth is circumferentially arrayed with a plurality of deformable metal strips along the vertical direction.

This invention provides a triboelectric nanogenerator and its fabrication method. The generator operates in a vertical contact-separation mode, with a positive friction layer of PET film and a negative friction layer of PDMS composite film with a single layer of dense SiO₂ microspheres inserted on its surface. The fabrication process employs a two-step spin-coating method: first, a PDMS solution is spin-coated onto a substrate; then, a suspension of SiO₂ microspheres is spin-coated onto the uncured surface. After heating and curing, a composite negative friction layer is formed, which is then assembled with electrodes and a support structure. This invention significantly increases the triboelectric contact area and enhances charge trapping capability by constructing the SiO₂ microsphere insertion layer, thereby greatly improving output performance. Furthermore, the fabrication process is simple and low-cost, making it suitable for powering microelectronic devices and self-powered sensing applications.

This invention provides an alkaline dust absorption system containing sodium carbonate powder, comprising an absorption tower. The top of the absorption tower is equipped with an inlet pressure gauge, and the interior contains, from top to bottom, a dust collection mesh and a spray distribution pipe. The sides of the absorption tower are respectively equipped with a circulation pump, a dynamic wave feed pipe, a fan, and a sewage pump connected to them. Alkaline dust is introduced into the inlet of the dynamic wave feed pipe, and the interior contains, from top to bottom, a primary dynamic wave nozzle and a secondary dynamic wave nozzle. The primary dynamic wave nozzle is connected to the circulation pump via a primary dynamic wave regulating valve, and a primary dynamic wave pressure gauge is installed on the pipeline between them. The secondary dynamic wave nozzle is connected to the circulation pump via a secondary dynamic wave regulating valve. This invention employs a "two-stage dynamic wave absorption + primary spray absorption" system to achieve efficient collection and treatment of alkaline dust such as NaOH and KOH particles and aerosols generated by the alkali dissolving system.

This invention discloses a low-smoke halogen-free flame-retardant network cable and its preparation method, comprising a conductor, an insulation layer, a foamed filler strip, an aluminum-plastic composite film wrapping layer, a non-woven fabric wrapping layer, and a halogen-free flame-retardant outer sheath layer. The halogen-free flame-retardant sheath layer is prepared from the following components: ethylene-vinyl acetate copolymer, POE, pretreated magnesium hydroxide, ammonium polyphosphate, modified lignin, attapulgite, zinc borate, maleic anhydride-grafted ethylene-vinyl acetate copolymer, antioxidant, and calcium stearate. This low-smoke halogen-free flame-retardant network cable uses an EVA / POE blend as the sheath matrix and employs a ternary composite flame-retardant system of magnesium hydroxide, ammonium polyphosphate, and modified lignin, synergistically using zinc borate and attapulgite as functional additives. Without introducing halogens, the sheath material simultaneously possesses B1-level flame-retardant performance, low-smoke and low-toxicity characteristics, and transmission performance meeting the Category 6 network cable standard. The overall solution balances the requirements of flame-retardant safety and communication functionality.

The application discloses a kind of laboratory vanadium-containing waste liquid processing methods, belong to sewage treatment field.The specific steps include: waste liquid is concentrated after adding H2O2 reaction, adjust pH value and precipitate iron, chromium, titanium in turn, then generate NH4VO3 crystal and ammonium magnesium phosphate crystal by adjusting pH value and adding crystal seed, finally adjust pH value and distill ammonia water to prepare ammonium sulfate, residual liquid is evaporated to obtain Na2SO4.The application realizes the gradient recovery of vanadium, phosphorus and sodium elements by multistage pH control and directional crystallization process, the vanadium recovery rate of this method is >82%, the phosphorus recovery rate is >84%, which can effectively solve the technical problems of incomplete recovery of vanadium and phosphorus, non-resource utilization of valuable elements and non-compliance of waste liquid and waste gas environmental protection in existing laboratory vanadium-containing waste liquid treatment methods.

The invention discloses a building waste green recycling system, and relates to the technical field of building waste crushing and recycling, the building waste green recycling system comprises a support, the upper end face of the support is obliquely fixed with a feed inlet; the conveying assembly is mounted in the feeding hole; the crushing bin is fixed to the upper end face of the support and communicates with the feeding port. The separating assembly is mounted in the crushing bin; the aggregate bin and the steel bar bin are both fixed in the support and located below the crushing bin; wherein the separation assembly comprises a rubbing assembly and a crushing assembly, one end of the rubbing assembly is hinged to the interior of the crushing bin, the other end of the rubbing assembly is hinged to the output end of a cylinder body, the cylinder body is hinged to the outer wall of the crushing bin, and the crushing assembly is installed in the crushing bin and located above the rubbing assembly.

The application discloses a kind of gob-side entry retaining support structure and construction method of steeply inclined coal seam fully mechanized working face.The support structure is arranged in the transport roadway near the side of goaf, including anchoring load-bearing parts, net body gangue retaining parts, restraint reinforcement, pre-stressed locking parts and flexible sealing material;Anchoring load-bearing parts are laid in the roof and bottom corner surrounding rock, net body gangue retaining parts are hung on the exposed section of anchoring load-bearing parts and cover along the whole height of roadway, restraint reinforcement is overlaid on the outside of net body and is connected with anchoring load-bearing parts, pre-stressed locking parts are set on the end of anchoring load-bearing parts and pre-tightening force is applied to form support base surface, and flexible sealing material is sprayed on the support base surface for sealing.The construction method includes drilling anchoring, hanging net body, installing restraint reinforcement, locking pre-tightening, spraying sealing.The application realizes the integration of support structure, has good gangue retaining and sealing effect, adapts to steeply inclined coal seam working condition, is convenient to construct and can be operated synchronously with mining, effectively improves the safety and reliability of gob-side entry retaining, and reduces the cost of mining.

The utility model discloses unpowered interval feeding equipment of a Z-shaped hoister, and relates to the technical field of conveying machinery, a conveying chain is arranged in the hoister, a plurality of hoppers are distributed along the conveying chain, a stock bin is arranged on one side of a low-position horizontal section of the hoister, and a discharge port at the lower end of the stock bin is connected with a feeding device; the feeding device comprises a feeding shell and a rotary discharging barrel rotationally arranged on the feeding shell, and a plurality of discharging openings are formed in the rotary discharging barrel in the circumferential direction of the rotary discharging barrel at intervals. The feeding device is further provided with a transmission part, and the transmission part is in transmission connection with a conveying chain of the elevator, so that a rotary discharging barrel of the feeding device is driven by the conveying chain to rotate synchronously, and then it is ensured that the discharging position of the rotary discharging barrel is matched with the movement position of the hopper in the low-position horizontal section in real time; discharged materials of a single discharging opening of the rotary discharging barrel fall into a certain hopper passing through the lower portion of the rotary discharging barrel. The feeding device makes full use of original power of the elevator, self-synchronization of the feeding action is achieved through mechanical linkage, and the complexity of a control system is simplified.

The utility model relates to ore sand washing machine technical field discloses a kind of ore exploitation deep processing automation ore sand washing machine, including filter barrel, the inside of the filter barrel is provided with straight pipe, the top of the straight pipe is communicated with drain pipe and penetrates the filter barrel, another end of the drain pipe is fixedly connected with cloth net, the bottom end outer wall of the straight pipe is slidably connected with filter screen one, the top of the filter screen one is provided with filter sponge, the top of the filter sponge is provided with filter screen two, the top of the filter barrel is fixedly connected with motor one, the output of the motor one is fixedly connected with rotating gear and penetrates the filter barrel. In the utility model, through the connection of cloth net and drain pipe, sewage is introduced into filter barrel through drain pipe and straight pipe, multi-stage filtration is carried out through filter screen one, filter sponge and filter screen two, and the circulating back groove is circulated under the action of fan, the loss of silt is reduced, and water resource waste is avoided.

The utility model relates to filling equipment technical field discloses a kind of acidifier filling equipment, including conveyer belt, the conveyer belt side is connected with baffle by drive arrangement, the left and right sides of conveyer belt are evenly provided with fixed frame, electric telescopic rod is fixedly connected in the middle part inboard of fixed frame, the driving end of electric telescopic rod is fixedly connected with clamping plate, electric chute is provided in the inboard of fixed frame upper end, the inner wall of electric chute is slidably connected with slider, the inboard lower end of slider is fixedly connected with fixed plate, the middle part of fixed plate is fixedly connected with filling head, the outer wall of filling head lower end is fixedly connected with conical rubber cover.In the utility model, by injecting argon to create an oxygen-free environment, effectively inhibit acidifier volatilization and prevent its oxidation, to protect product stability. Through the linkage of each component to realize automatic clamping, filling and release, baffle rotation synchronously completes pushing and interception, realize continuous production, and waste gas centralized treatment, give consideration to efficient and environmental protection.

This invention belongs to the field of polymer composite material preparation technology, and particularly relates to a crack-resistant and flame-retardant material for cables and its preparation process, including the following steps: dissolving PVP and ammonium citrate in an ethanol solution, adding Mg / Al-LDH and hydrophilic modified expanded graphite for dispersion, heating and adding aluminum isopropoxide solution for reaction, washing and dispersing in phytic acid solution, heating and reaction, washing and drying to obtain flame-retardant microparticles; mixing EVA, EVA-g-MAH, flame-retardant microparticles, antioxidants and lubricants and extruding them in an extruder, cooling and pelletizing the extrudate to obtain the crack-resistant and flame-retardant material for cables. This invention obtains the material by blending flame-retardant microparticles with EVA and other materials and then granulating them. The flame-retardant microparticles can meet the flame-retardant requirements of the sheath made of the material with a relatively small amount added, improving the continuity of the EVA matrix and preventing cracking of the sheath under frequent bending conditions.

The utility model belongs to stirring device technical field especially relates to a kind of gypsum slurry stirring device, including support leg, support leg upper portion is provided with bearing disc, bearing disc upper portion is provided with sealed jar by fixed plate, stirring cavity is provided in sealed jar, sealed jar upper portion is provided with top cover, top cover is provided with stirring mechanism, top cover upper portion is provided with atomization water curtain mechanism, support leg one side is provided with support platform, support platform upper portion is provided with water tank, first micro water pump is connected in water tank upper portion, support platform upper portion is provided with bearing frame, second micro water pump is provided in bearing frame upper portion, support platform upper portion is provided with vacuum pump, vacuum pump is extended into sealed jar by vacuum pipe.This utility model whole process is in closed environment and is automatically operated, greatly improves production efficiency, slurry stability and production environment cleanliness, and is suitable for high-standard gypsum product scale manufacturing.

This utility model discloses an exhaust purification system for an integrated waste compression box, including a docking cover for connecting to the exhaust port of the integrated waste compression box, a negative pressure pipe connecting the docking cover, a negative pressure device connecting the negative pressure pipe, and an odor purification device connected to the output end of the negative pressure device via a pipeline. The negative pressure pipe includes a rigid pipe, a telescopic pipe connecting the rigid pipe and the docking cover, and a first telescopic device connecting the rigid pipe and the docking cover. The first telescopic device is used to drive the docking cover downward to dock with the exhaust port. This exhaust purification system automatically docks the docking cover with the exhaust port through the first telescopic device. The negative pressure device, negative pressure pipe, and docking cover create a directional airflow during waste dumping. Combined with the odor purification device, this effectively suppresses waste escape during the operation process and effectively purifies odorous gases, significantly reducing odor emissions and significantly improving the working environment and air quality of waste transfer stations.