220results about How to "Eliminate pollution" patented technology

The invention discloses a wireless temperature measuring device suitable for a semiconductor vacuum chamber, and belongs to the technical field of wafer temperature measurement, a device main body comprises an upper silicon wafer and a lower silicon wafer, a wireless temperature measuring assembly is arranged between the upper silicon wafer and the lower silicon wafer, and the wireless temperature measuring assembly is composed of a circuit, a temperature measuring device, a battery and a master controller. The circuit is arranged between the upper silicon wafer and the lower silicon wafer, the temperature measuring device, the battery and the master controller are all electrically connected with the circuit, and the upper silicon wafer and the lower silicon wafer are bonded through high-temperature bonding glue; during specific implementation, temperature measurement is performed on the interior of the wafer through the temperature measurement device, obtained temperature data are uploaded to a cloud end through the master control, the battery is a power supply of the temperature measurement device and the master control, the wireless temperature measurement device can eliminate partial pollution caused by wired temperature measurement during use, through holes are prevented from being formed in the processing chamber, and the processing efficiency is improved. And the manufacturing difficulty is reduced and the temperature measurement effect is good.

The invention provides a preparation method of modified nanocellulose, a biomass coating and a composite paper wood, the preparation method of modified nanocellulose comprises the following steps: a, oxalic acid is heated to a molten state, bleached wood pulp is added to the molten oxalic acid for a reaction, and nanocellulose is obtained; b, dispersing nanocellulose in water, and mixing with coniferyl alcohol solution, hydrogen peroxide solution and first enzyme solution for reaction to obtain DHP-nanocellulose; c, mixing the DHP-nanocellulose with coniferyl alcohol glucoside, a second enzyme solution and a hydrogen peroxide solution, and reacting to obtain the modified nanocellulose. According to the invention, a plant lignification process is simulated, so that crosslinking in lignin-glycan complex forms such as anisole bonds, ester bonds and the like and connection of covalent bonds such as Beta-aryl ether bonds among lignin are regenerated among separated fibers, and the modified nanofiber with high physical strength is obtained; and some environmental pollution problems caused by the use of raw materials and products in a traditional reinforcing method are solved.

The invention discloses a high-temperature and high-precision wireless temperature measuring device for a semiconductor vacuum high-temperature chamber, and belongs to the technical field of wafer temperature measurement, a device main body comprises a wafer, a control box is arranged above the wafer, supporting legs are arranged between the wafer and the control box, a control system is arranged in the control box, and a temperature measuring circuit is arranged on the surface of the wafer. The temperature measuring circuit is provided with temperature measuring devices, the temperature measuring devices are uniformly distributed on the surface of the wafer, and the temperature measuring circuit is electrically connected with the control system through a connecting line; in the specific implementation process, the control system is composed of a control circuit, a battery, a circuit board, a wireless signal receiver and a wireless signal transmitter, the battery is used for supplying power to the whole control system and the temperature measuring circuit, and measured temperature data are sent to a computer end through the control system.

The utility model belongs to the technical field of glass production, and discloses a cutting dust removal device. According to the cutting dust removal device, the first cavity is formed in the supporting seat, the electrostatic dust removal airflow is introduced into the first cavity, the electrostatic dust removal airflow eliminates dust static electricity in time, the adhesive force of dust on the surface of a glass substrate is effectively removed in time, meanwhile, the dust is sucked and discharged through the dust suction assembly, negative pressure is formed in the first cavity, and the dust removal effect is improved. The dust dissipation to the outside of the first cavity is effectively reduced, and the pollution of the dust to the glass substrate is eliminated, so that the quality and the cutting yield of the glass substrate are remarkably improved.

The invention provides a self-supporting carbon-based material loaded with iron nanoparticles as well as a preparation method and application of the self-supporting carbon-based material, and belongs to the technical field of preparation and application of an electrocatalyst for removing nitrate in sewage. The preparation method of the self-supporting carbon-based material loaded with the iron nanoparticles comprises the following steps: providing a carbon felt subjected to acid pickling and water bath heating; the method comprises the following steps: mixing an iron precursor and urea in a solvent to obtain a mixed solution containing iron salt; and mixing the carbon felt with the mixed solution containing the iron salt, and carrying out a hydrothermal reaction to obtain the self-supporting carbon-based material loaded with the iron nanoparticles. When the iron nanoparticle-loaded self-supporting carbon-based material provided by the invention is used as a cathode for electro-catalysis of nitrate-containing wastewater, a good removal rate and ammonia nitrogen selectivity are achieved, and the catalyst can keep relatively high nitrate nitrogen removal and ammonia nitrogen production effects under the conditions of acidity, neutrality, alkalinity and different initial nitrate concentrations; the method has the advantages of high removal efficiency, good ammonia nitrogen selectivity, strong stability and the like.

The utility model discloses a microwave plasma spray gun for an ion implanter. The microwave plasma spray gun comprises a microwave generator, a waveguide assembly, a plasma chamber, a working gas supply device, a medium tube and a conducting rod, wherein the open end of the dielectric tube is arranged outside the plasma chamber and connected to the waveguide assembly, and the closed end of the dielectric tube is arranged inside the plasma chamber; the conducting rod is hollow and is coaxially arranged in the inner cavity of the dielectric tube, the first end of the conducting rod extends to the open end of the dielectric tube, and the second end of the conducting rod extends to the closed end of the dielectric tube. According to the microwave plasma spray gun, metal pollution can be greatly reduced, electrons provided by the microwave plasma spray gun are uniformly distributed, and charge neutralization reaction can be better realized.

According to the sealing groove structure for the electrolytic cell, a sealing area comprises an outer side sealing area, a middle sealing area and an inner side sealing area, and concave-convex sealing structures are arranged between the outer side sealing area and the middle sealing area and between the middle sealing area and the inner side sealing area on the connected surfaces of a convex face frame plate and a concave face frame plate. By means of the novel sealing structure of the electrolytic cell, the sealing performance of the electrolytic cell can be improved, environmental pollution and harm caused by running, emitting, dripping, leakage, seepage and the like are eliminated, the replacement frequency of a sealing gasket is reduced, the service life of the sealing gasket is prolonged, the service life of the electrolytic cell is prolonged, and the service life of the electrolytic cell is prolonged. And contributions are made to electrolysis industry and ecological environment protection, resource saving, safe and stable operation of the electrolytic cell and health and safety of animals, plants and human beings.

The present invention relates to the technical field of cigars, and in particular to a cigar wrapper and binder and a preparation method thereof. The method uses biological enzymes to catalyze lignin cross-linking to prepare the wrapper and binder, and can prepare wrappers and binders of different colors by hot pressing at 80°C. The prepared cigar wrapper and binder are green, environmentally friendly and non-toxic, have strong physical properties, and have moisture-proof function.

The invention provides an electric platform management method based on a high-performance battery and an intelligent system, and belongs to the technical field of intelligent power grids, and the method comprises the following steps: S1, obtaining a satellite signal based on a GPS receiver, carrying out the three-dimensional positioning of the position of a vehicle, and obtaining the speed, steering angle and brake state of the vehicle based on a sensor; s2, position coordinates of the vehicle are updated according to the obtained initial position of the vehicle and the motion parameters of the vehicle; s3, based on the coordinates of the starting point and the ending point of the vehicle and a path planning algorithm, finding an optimal path on a map, and outputting an optimal driving path of the optimal vehicle; and S4, updating a navigation instruction and a path in real time according to the current position and the dynamic traffic condition of the vehicle, and continuously optimizing the optimal driving path of the vehicle. The system has the functions of real-time positioning and information return, can schedule and manage maintenance vehicles in real time, is convenient for managers to monitor and schedule vehicle positions and work schedules, and improves the management efficiency and the operation safety.

The present invention provides a temporary aquatic product rearing device and a method of using the device, including a water distribution channel and a collection control box, a water collection pool is provided on one side of the water distribution channel, a group of water flow aquaculture tanks are connected to the side of the water distribution channel away from the water collection pool, an aeration water pushing device is installed on the side of the water flow aquaculture tank close to the water distribution channel, and a sewage collection shell is connected to the side of the water flow aquaculture tank away from the aeration water pushing device; a sewage discharge pipe is connected to the water collection pool, and the sewage discharge pipe is respectively connected to a group of sewage collection shells, and a purification component is also connected to the water collection pool. The present invention can effectively improve the product quality of aquatic products and gain recognition from consumers; remove fecal impurities generated during the temporary rearing process, and after water treatment, discharge clean water for continued use, which can effectively save water and eliminate pollution to the environment; through temporary rearing, the drug residues of the aquatic products themselves can be effectively removed to promote the metabolism of aquatic products.

The utility model relates to the technical field of chemical engineering, in particular to a low-pressure gas-making furnace outlet oil-containing high-temperature coal gas purification and recovery system which comprises a high-temperature dust removal system, an oil and heat recovery system, a washing tower system and a stripping tower system. According to the utility model, low-grade heat in coal gas can be fully recovered, and energy is fully utilized; and the pollution of organic matters contained in the low-pressure coal gas to the environment is eliminated.

The invention belongs to the technical field of tunnel construction, and particularly relates to tunnel new energy operation equipment and an energy consumption control method thereof.The tunnel new energy operation equipment comprises a crawler chassis, the crawler chassis is driven by a motor, an electric telescopic arm is fixedly installed on the surface of the crawler chassis, and an external cable is slidably connected to the inner wall of the electric telescopic arm; the external cable is used for being connected with a power grid to provide electric energy for operation equipment. According to the tunnel new energy operation equipment and the energy consumption control method thereof, by arranging the energy storage driving control mechanism and the rotary conductive mechanism, seamless switching and 360-degree continuous rotation operation of the equipment in a power grid direct supply mode and a battery power supply mode are achieved when the equipment is used, and waste gas pollution in a tunnel is fundamentally eliminated. The system has the characteristics of zero emission, low noise and high energy utilization rate, the direct electric charge and ventilation energy consumption are remarkably reduced, the comprehensive energy consumption is reduced, and a brand new green and efficient equipment solution is provided for tunnel construction.

The invention discloses a preparation method of an ultra-pure nickel-titanium alloy thin-wall pipe for a heart valve. The method comprises the following steps: 1, preparing materials, and carrying out magnetic suspension induction melting to obtain a cast ingot; 2, gradually performing hot forging and rolling on the cast ingot to obtain a round bar; thirdly, the round bar is manufactured into a pipe blank, honing and polishing are conducted, and the nickel-titanium pipe is obtained; 4, assembling the nickel-titanium pipe into the titanium pipe to obtain a combined pipe; 5, heat treatment of the combined pipe; 6, three-roller precise cold rolling; 7, repeating to obtain a pipe semi-finished product; and 8, straightening and cylindrical grinding are performed to remove the titanium pipe. According to the method, the high-purity nickel-titanium alloy cast ingot is prepared through magnetic suspension induction melting, the outer-layer titanium pipe and the inner-layer nickel-titanium pipe are introduced to be assembled, the pass deformation is increased through the restraining and protecting effects of the titanium pipes, the number of times of rolling and heat treatment is reduced, and the machining period is shortened; the obtained ultra-pure nickel-titanium alloy thin-wall pipe is high in purity, high in size precision, good in surface quality, high in wall thickness uniformity and good in comprehensive mechanical property and is suitable for the field of heart valves.

The invention belongs to the technical field of space atmospheric optical remote sensing, and particularly relates to a method for inverting an ozone concentration profile through airglow radiation of an oxygen atmospheric zone and a near-infrared atmospheric zone. According to the method, airglow radiation signals of the O2 atmospheric zone and the near-infrared atmospheric zone are combined, the ozone profile within the near space of 30 km to 130 km is obtained through calculation according to the photochemical reaction principle and the atmospheric radiation transmission model, and compared with a traditional O3 concentration profile inversion method, the method has better accuracy and a larger vertical coverage range.

The application relates to the alloy preparation technical field and provides a preparation method of a high-performance tin-copper alloy wire, which comprises the following steps: tin and copper are smelted in a vacuum environment, and then cooled to obtain a tin-copper intermediate alloy; pure copper and the tin-copper intermediate alloy are smelted and refined in a vacuum environment, and then the alloy solution after the refining is drawn to prepare a tin-copper alloy rod; the tin-copper alloy rod is vacuum heat-treated, vacuumizing is stopped after the heat treatment temperature reaches 750-900 DEG C, nitrogen-oxygen mixed gas is filled, tin on the surface layer of the tin-copper alloy rod reacts with oxygen to generate tin oxide, heat treatment is carried out after the heat treatment, heating is stopped after the heat treatment is completed, and natural cooling is carried out to obtain a tin-copper alloy rod blank; the tin-copper alloy rod blank after the vacuum heat treatment is subjected to rough drawing treatment. The preparation method disclosed by the application obtains a high-strength high-conductivity copper-tin alloy wire through a vacuum heat treatment internal oxidation technology, and realizes accurate regulation and control of the composition of a copper-tin alloy wire blank.

The application relates to a lithium battery anchor machine, which comprises a rack, a lithium battery, a motor, a gear transmission mechanism and a power output shaft which are installed on the rack; the motor is connected with a motor output shaft, the motor output shaft and the power output shaft are connected with the gear transmission mechanism respectively, the gear transmission mechanism comprises a planetary gear transmission assembly; the gear transmission mechanism is installed in a transmission shell, the power output shaft is stretched out from the transmission shell and detachably connected with a drill bit. The utility model can solve the problems of power source, working efficiency and maintenance cost, and improve the efficiency, safety and reliability of railway track bolt drilling operation.

The utility model relates to the technical field of defoaming, and discloses a defoaming device for wet process of an integrated circuit, which comprises a box body, an inner groove and an outer groove are arranged on the box body, a hole is arranged at the top end of the box body, a defoaming device is arranged at one side of the top end of the outer groove close to the hole, and a guide plate is arranged at the top end of the outer groove. According to the utility model, the 45-degree guide plate and the defroster are introduced, so that a good defoaming effect can be effectively and quickly achieved, quality problems such as electroplating pinholes and water marks caused by bubbles in a wafer wet process are avoided, and production line process troubles and environmental pollution caused by foams generated by liquid medicine are eliminated; the method can be widely applied to defoaming of various wafer wet processes.

The application discloses a method for modifying and adjusting hot-state desulfurization slag of steelmaking, which comprises the following steps: mixing hot-state molten desulfurization slag and casting residue or mixed liquid casting residue in a hot-state adjusting and conditioning pool, and changing the caking and difficult-to-handle characteristics of the molten desulfurization slag into easy-to-handle modified slag for subsequent disposal. The application solves the technical problem of large lumps of slag and iron in existing steel enterprises, and has strong operability and no safety problem.

The invention discloses an integrated bulk machine. The bulk machine comprises a machine body supporting seat, a PLC controller, a silo, a dust collecting system, a lifting system and a telescopic barrel, wherein the silo is arranged on the machine body supporting seat in a penetrated mode and is fixedly connected by a fastener; the dust collecting system comprises a dust collecting fan, a dust collecting pipeline and a dust collecting filter barrel; the silo comprises a feeding port, a collecting bin, a discharging port and a curved valve; and the discharging port is fixedly connected with the telescopic barrel, the lifting system matches the telescopic barrel, and the PLC controller is respectively connected with the dust collecting fan, and the curved valve and the lifting system in a communicated mode. The integrated bulk machine has the advantages that each component cooperates with each other, and the machine is reasonable in design; by means of the machine body supporting seat,the whole device system is stabilized; by means of the dust collecting system, the dust pollution caused by transferring the powder can be eliminated; and by means of the lifting system, the change ofthe length of the telescopic barrel can be achieved, so that the whole device is capable of meeting the requirements of a silo of a vehicle body with different heights, the whole device is easy to operate and convenient to transfer, and the bulk machine has wide adaptability and high stability.

The application discloses a novel full-line fast distance protection method under a power system, which comprises the following steps: S1, continuously monitoring the voltage and current on one side of the line, and starting the protection when detecting that the current mutation variable exceeds a set threshold; S2, establishing an accurate line differential equation based on a pi type equivalent model; S3, constructing the differential equation in the time domain by using the collected voltage and current data, and directly and real-timely solving the equivalent transition resistance of the fault point; S4, establishing a relationship model of the additional measurement impedance and the equivalent transition resistance, accurately compensating the apparent impedance measured by the protection device, and accurately calculating the real distance from the protection installation to the fault point; and S5, comparing the calculated fault distance with a preset protection section, and realizing the fast isolation of the fault; the application has the advantages of weak feed adaptability improvement, strong anti-transition resistance capability, long line anti-maloperation optimization and fast action speed, and can provide effective technical support for the main protection configuration of new energy sending-out lines and high-proportion power electronic power grids.

The invention belongs to the technical field of livestock and poultry breeding wastewater treatment and waste utilization, and discloses a livestock and poultry wastewater treatment and deep phosphorus removal system and a livestock and poultry wastewater treatment method. The livestock and poultry wastewater treatment and deep phosphorus removal system provided by the invention specifically comprises a solid-liquid separation device, a wastewater treatment device, a deep phosphorus removal device and a sludge (excrement) utilization device, the wastewater treatment and deep phosphorus removal system comprises a biogas digester, a biochemical treatment device, an adsorption phosphorus removal device and a sludge treatment system which are communicated in sequence. A water inlet of the biogas digester is communicated with a water outlet of the solid-liquid separation device, a water outlet of the biogas digester is communicated with the biochemical treatment device, and a water outlet of the biochemical treatment device is communicated with a water inlet of the adsorption dephosphorization device. When the treatment system is used for treating the livestock and poultry breeding wastewater, resource utilization of the livestock and poultry breeding waste and wastewater can be fully achieved, the concentration of pollutants in effluent is far lower than the existing livestock and poultry wastewater discharge standard, meanwhile, harmless discharge or resource utilization of the livestock and poultry breeding wastewater is achieved, and the treatment system has good application prospects.

The present invention discloses a pneumatic tube drilling anti-blowout and dust-proof slag-water separation device, which includes an anti-blowout and dust-proof device and a slag-water separation device. The anti-blowout and dust-proof device of the present invention is used to prevent rock cuttings, rock powder or groundwater from spraying out along the gap between the drill rod and the casing of the pneumatic tube drilling rig; the slag-water separation device collects rock cuttings and rock powder discharged from drilling construction above the aquifer, and quickly separates rock cuttings and groundwater in the aquifer construction. By opening and closing the valve at the discharge end of the material pipe, the slag-water separation device can switch between two operating modes. When the valve is closed, the slag-water separation device collects rock cuttings and rock powder during drilling construction above the aquifer. When the valve is opened during drilling construction in the aquifer, the slag-water separation device quickly separates the discharged rock cuttings from the groundwater. The above combined structure jointly achieves the technical effects of pneumatic tube drilling anti-blowout and dust-proof and slag-water separation.

The invention discloses a method for preparing porous spherical basic magnesium carbonate based on bittern and application of the porous spherical basic magnesium carbonate in preparation of a flame-retardant synergist. Micron-sized porous spherical basic magnesium carbonate is prepared on the basis of bittern, and the nanoscale flame-retardant synergist is loaded through a simple self-assembly method, so that the problems that the flame-retardant efficiency of basic magnesium carbonate is low and the dispersity of the nanoscale flame-retardant synergist is poor are solved. The prepared flame retardant is simple in reaction process, low in energy consumption, short in consumed time, economical and environmentally friendly, magnesium-containing bittern is subjected to resource utilization again, the dispersity of a nanoscale flame retardant synergist is improved, the problems that a traditional basic magnesium carbonate flame retardant is low in efficiency, and preparation of a hybrid flame retardant is not environmentally friendly are solved, and the flame retardant is suitable for industrial production. And the flame retardant can be widely applied to the fields of chemical engineering, buildings, traffic, machinery and the like.

The utility model discloses a petroleum coke cooling and dewatering screen, belongs to the field of vibrating screening machinery, and simplifies the cooling and dewatering procedures of petroleum coke. Comprising a screen frame, a cooling water pipe, a steam desilting pipe and a sealing cover. A sealing cover for preventing harmful steam from leaking is arranged on the upper edge of the screen frame; a feeding hole in the sealing cover is connected with upstream equipment in a sealing manner; at the discharging end of the screen frame, a discharging opening formed by the screen frame and the sealing cover is connected with downstream equipment in a sealed mode. A cooling water pipe is arranged in the screen frame below the sealing cover and near the feeding hole; and a steam pipe for dredging is arranged beside the cross beam of the screen frame below the screen surface. The cooling water pipe and the steam pipe are in sealed connection with the screen frame side plate, and the sealing cover is in sealed connection with the screen frame through rivets or bolts. And the inspection manhole and the exhaust port are arranged on the sealing cover. The cooling and dehydration processes of the petroleum coke are completed in the same equipment, so that the processes are reduced, the equipment is saved, and the production efficiency is improved. The device can be applied to petroleum coke cooling and dewatering operation in the petrochemical industry.

Provided is a laser ultrasonic visualization detection device for composite material cylinder structures, which is composed of a mechanical motion mechanism and a laser ultrasonic visualization detection platform. The mechanical motion mechanism includes a flat cart (1), a C-shaped ring bracket (2), and a stepping motor (5). The laser ultrasonic visualization detection platform includes an electrical cabinet (3), a motion control card (4), a laser scanning unit (6), a signal processing unit (7), an ultrasonic signal sensor (8), a computer (9), and a display (10). The composite material cylinder structure (11) to be detected is placed at a roughly central position of the C-shaped ring bracket (2), with the cylinder wall facing the C-shaped ring bracket (2) for easy detection. The detection does not require a liquid coupling agent, thereby eliminating the influence on the ultrasonic signal caused by the use of a liquid coupling medium in traditional ultrasonic detection, the pollution and damage to the structure surface and the environment, and the inconvenience in operation. Different laser scanning speeds can be used for cylinder structures of different sizes, thereby ensuring detection efficiency and greatly shortening detection time.

The present invention relates to the technical field of sludge treatment, and discloses a device suitable for adsorbing and recovering ammonia in biogas from anaerobic digestion of sludge and preparing struvite. The device includes an NH3 adsorption recovery unit and a struvite preparation unit. The NH3 adsorption recovery unit includes an anaerobic digestion tank, an adsorption separator, and a biogas storage tank connected in sequence through pipelines. The adsorption separator includes an adsorption separator A and an adsorption separator B arranged in parallel, and are respectively connected to the struvite preparation unit and a phosphoric acid storage tank through pipelines. The struvite preparation unit includes a struvite preparation unit and a phosphoric acid storage tank connected through pipelines. The present invention adsorbs and recovers high-concentration NH3 in biogas and prepares struvite, eliminates air pollution caused by high-concentration NH3 in biogas products, and realizes the resource utilization of waste NH3; by setting the adsorption separator A and the adsorption separator B connected in parallel, the system cycle adsorption and elution mode are guaranteed to operate continuously.

The invention relates to the technical field of metallurgy, in particular to a preparation method of a high-nitrogen vanadium-nitrogen alloy and the high-nitrogen vanadium-nitrogen alloy.The preparation method comprises the following steps that 1, wet-based industrial-grade ammonium vanadate, a graphite carbon powder reducing agent, a metal iron powder catalyst and a water-based binder are mixed and stirred according to the mass ratio of 100: (18-22): (0.2-0.5): (8-20), and a mixture is obtained; 2, the mixed material is subjected to compression molding, and a preformed material is obtained; and 3, the preformed material is sequentially subjected to low-temperature pre-sintering dehydration treatment, high-temperature nitridation reduction treatment and cooling annealing treatment, and the high-nitrogen vanadium-nitrogen alloy is obtained. According to the preparation method, industrial-grade wet-based ammonium vanadate is directly adopted as a raw material, pretreatment is not needed, and the production cost is further reduced.

The invention discloses a method for efficiently leaching platinum group metal in a waste automobile catalyst, and belongs to the field of rare and precious metal smelting. The method comprises the following steps: a leaching process: mixing the hulled waste automobile catalyst with a leaching agent, carrying out acid leaching in an acidic solution for a period of time, adding a complexing agent to complex platinum group metals, leaching for a period of time, and filtering to obtain a pregnant solution rich in the platinum group metals and carrier residues; wherein the leaching agent is a cerium-containing compound; a resin adsorption process: adsorbing the pregnant solution through an adsorption column filled with adsorption resin to obtain an adsorbed solution; and an elution process: washing the adsorbed adsorption resin with water and eluting the platinum group metal step by step, and regenerating the eluted adsorption resin for cyclic utilization. The method aims at avoiding generation of toxic and harmful substances (chlorine and NOx) and use of highly toxic cyanide in an existing wet process, environmental pollution and potential safety hazards are fundamentally eliminated, and meanwhile the leaching efficiency of the platinum group metal is remarkably improved.

This utility model discloses a drying pot unloading device. It includes a discharge port and a discharge door on the bottom plate of the drying pot. A pair of parallel guide rails arranged on both sides of the discharge port and a drive device for driving the discharge door to reciprocate are provided at the bottom of the bottom plate. Each pair of guide rails has a trajectory that allows the discharge door to move to the discharge port and press against it. The discharge door is positioned between the guide rails and can be driven by the drive device to reciprocate under the guidance of the guide rails to open and close the discharge port. The advantage is that during the opening and closing process, the discharge door can be reciprocated under the guidance of the guide rails by the drive device to open and close the discharge port. This cleverly utilizes the trajectory of the guide rails to press the discharge door firmly against the bottom of the discharge port, ensuring a seal and avoiding environmental pollution caused by leakage, thus eliminating air pollution caused by odors from leaks.

The invention relates to an electromechanical machine for converting animal skins into leather, consisting of a machine intended to participate in one or more steps of a process for converting any animal skins into leather. The machine is characterized in that it comprises: a main tank (1) in which the animal skin (3) is immersed in a treatment fluid, called syrup (2), containing one or more additives; an impeller suction motor pump (4) circularly conveys the syrup (2) through a water outlet pipe (5) to a reversing valve (5.1), the reversing valve guides the syrup (2) to one or more filters (6), guides the treatment fluid to a heater (7) or a bypass pipe (5.3), and finally reaches a group of storage tanks (8), and the storage tanks (8) are connected with the water outlet pipe (5). The filter is preferably a slow sand type filter, a decanter type filter, a settling tank type filter, an ozone or UVC ultraviolet radiation disinfection type filter, a zeolite type filter, an activated carbon type filter, an anthracite type filter, a silicon dioxide type filter, an argenite type filter or a copper ion generator type filter, and an opening / closing valve (5.2) is arranged on a pipeline behind the reversing valve (5.1). The syrup (2) is then stored and then discharged into the main tank (1) via a return line (5.4). The machine is provided with a gear motor (9), and the gear motor transmits power through a rotating shaft (10) provided with a clamp (13) at the end. The clamp is arranged opposite to another same clamp (13) mounted on the sliding shaft (11); the machine is provided with a fixed stop block (15.1) fixedly connected with the main tank (1) and a movable stop block (15) fixedly connected with the sliding shaft (11); a spiral spring (14) is mounted between the two stop blocks; when the length of the spiral spring changes, the spiral spring can control the reversing device (16), and then the rotating direction of the gear motor (9) is adjusted. The machine is provided with a programmable central computer, and the computer is controlled according to the required characteristics of each animal skin in the aspects of color, tanning agent type, fatliquoring agent type, fixing agent type and the like.