38results about How to "Increase waste" patented technology

The invention provides a preparation method of nano indium tin oxide powder, and belongs to the technical field of preparation of electronic ceramic transparent oxide functional inorganic materials. The preparation method comprises the following steps: in an oxygen-containing environment, performing electric arc gasification on an indium tin metal melt, and oxidizing metal steam generated by the electric arc gasification to obtain the nano indium tin oxide powder, the current applied for generating the electric arc is 500 to 1200 A, and the voltage is 50 to 120 V. The preparation method provided by the invention is simple, the oxidation reaction time is short, no exhaust gas is discharged, and meanwhile, the problems of wastewater and waste acid discharge and difficult impurity removal caused by addition of strong acid are avoided. The preparation method provided by the invention can realize continuous production and is high in production efficiency; and the particle size D50 of the prepared nano indium tin oxide powder can be kept to be less than 0.5 mu m and D90 is less than 1 mu m.

The utility model relates to the field of constructional engineering quality detection, in particular to an outer window water spraying pipeline system which comprises a spraying mechanism, a water supply mechanism and a recycling mechanism. The spraying mechanism is installed on the outer wall of the building and located above the outer window. The water supply mechanism is installed in the building body, the spraying mechanism is connected with the water supply mechanism, and the water supply mechanism is used for supplying liquid to the spraying mechanism; the recycling mechanism is installed on the building outer wall and located below the spraying mechanism. The value range of the number of layers of the outer window between the spraying mechanism and the recycling mechanism is two to six; the value range of the distance between the spraying mechanism and the outer window is 100-150 mm. In the structure, the recycling mechanism can recycle most of water resources, waste of the water resources is reduced, and the problem that an existing water spraying test easily causes waste of the water resources is solved. The distance between the spraying mechanism and the outer window is within 100-150mm, and a water curtain can be well formed, so that the water curtain is closer to rainwater spraying, and the accuracy of a test result is improved.

A magnetic power conversion device includes a power plug and an AC-to-DC socket electrically connected to the power plug, wherein an AC-to-DC circuit is provided in the AC-to-DC socket; a plurality of conversion connectors are provided on the surface of the AC-to-DC socket; and a plurality of DC-to-DC converters are also provided, wherein the DC-to-DC converters are provided with connectors, which are detachably connected and arranged in the conversion connectors; and the DC-to-DC converters are also respectively connected with connecting wires for connecting to low-voltage DC electrical equipment. This allows consumers to replace their mobile phones or other electronic devices without having to replace the circuit part (i.e., the socket part) that converts AC to fixed DC, but only needs to replace the cheap DC-to-DC component (i.e., the converter part), thereby reducing consumer costs and improving resource waste. Since the conversion of AC to a fixed DC voltage is integrated into the socket, the socket part can be implemented in a multi-port parallel output form with a single set of conversion circuits.

The utility model relates to the technical field of medical instruments, in particular to a novel neurology patient nursing medicine feeder which comprises a piston cylinder, a lower tooth socket and a tongue depressor, a supporting rod is fixedly installed at the upper end of the lower tooth socket, a clamping block is fixedly installed at the upper end of the supporting rod, and the piston cylinder is installed on the inner wall of the clamping block. The novel neurology patient nursing medicine feeder comprises a piston cylinder, a cavity for storing medicine is formed in the inner wall of the piston cylinder, a connecting assembly is arranged on the outer wall of the front end of the piston cylinder, and the piston cylinder is connected with a tongue depressor through the connecting assembly. The problem that medicine is poured and wasted due to shaking and struggling of a patient can be solved, the medicine feeding pipe can directly reach the deep position of the oral cavity of the patient, direct input of medicine liquid is facilitated, and the medicine feeding efficiency can be effectively improved.

The utility model relates to the technical field of municipal engineering, in particular to a construction warning device which comprises a base used for installing a stand column, moving wheels capable of pushing the device are installed at the bottom of the base, and the construction warning device can easily move in a construction site, so that the position of a warning area is rapidly adjusted to adapt to construction progress and site changes. A supporting mechanism for reducing the pressure of the moving wheels is installed on the side portion of the base, extra stability and strength can be provided, the device is more stable, and meanwhile the pressure of the device on the moving wheels is reduced. A connecting mechanism is slidably connected to the stand column, a mounting groove matched with the connecting mechanism is formed in the top of the stand column, a reinforcing mechanism for reinforcing the protection effect of the guardrail device is mounted on the connecting mechanism, and a fixing cap is inserted into the top of the stand column, so that the device is convenient to mount and dismount and can be repeatedly used in different construction sites; the working efficiency is improved, and meanwhile inspection and maintenance are facilitated.

The hoisting device comprises an upper hydraulic frame, a lower hydraulic frame and a hydraulic control device, the upper hydraulic frame and the lower hydraulic frame are detachably connected through a connecting rod, and the upper hydraulic frame and the lower hydraulic frame are each provided with a hydraulic telescopic round rod and a hydraulic telescopic square strip. The hydraulic telescopic round rods and the hydraulic telescopic square strips are controlled by the hydraulic control device to do telescopic motion, the upper hydraulic frame and the lower hydraulic frame can be installed and stably fixed to the large mast, hoisting points for hoisting and positioning are provided for the mast, and the hoisting accuracy and the installation quality of the large mast are improved; in addition, through telescopic adjustment and flexible adjustment of the distance between the upper hydraulic frame and the lower hydraulic frame, the device can adapt to masts of different sizes and shapes, the construction process is simplified, the positioning efficiency and accuracy are improved, the device has wide universality, meanwhile, through control over telescopic adjustment of the round rods and the square strips, interference and collision between the device and the masts are avoided, and the construction efficiency is improved. The safety and reliability of construction are improved, and risks are reduced.

The application provides an electric water boiler control device, and relates to the technical field of equipment management. The electric water boiler control device comprises a power supply, a control mechanism and an electric water boiler connected in sequence. The control mechanism comprises a first circuit breaker connected with the power supply, a time control switch connected with an output end of the first circuit breaker, an alternating current contactor connected with a zero line end of the time control switch, and the alternating current contactor connected with the electric water boiler. The time control switch is used for closing a contact point when a current time is in a preset time period, controlling the alternating current contactor to be closed, and making the electric water boiler work under power. In this way, the problem that a traditional electric water boiler cannot be flexibly controlled to be opened and closed according to a user's work period, resulting in energy waste, can be solved.

The invention provides a copper foil edge cutting device, and belongs to the technical field of copper foil edge cutting devices.The copper foil edge cutting device comprises a supporting seat; the protection base is arranged on the inner surface of the supporting base, and the upper end of the protection base is fixedly connected with a machining shell; the two fixing seats are fixedly connected to the upper end of the supporting seat, and a plurality of rotating rollers are rotationally connected to the inner surfaces of the two fixing seats correspondingly; the lifting mechanism is arranged in the protection seat so as to drive the copper foil to be lifted; the pressing mechanism is arranged in the processing shell so as to achieve the effect of pressing and limiting the copper foil; by means of the copper foil edge cutting device and the cutting mechanism, the copper foil edge cutting device can automatically and accurately position and fix the copper foil conveniently, damage to the edge of the copper foil in the cutting process is reduced, resource waste of copper foil materials is reduced, the working efficiency of copper foil edge cutting machining is improved, and waste of time and manpower resources is reduced.

The invention relates to the technical field of wastewater treatment, and discloses an energy circulation control system, which comprises a raw water tank, a first water tank outlet and a second water tank outlet, the reverse osmosis device is provided with a first water inlet, a first water outlet and a second water outlet, the first water inlet is connected with the outlet of the first water tank, the reverse osmosis device is used for concentrating the desulfurization wastewater to generate produced water and high-pressure concentrated water, the produced water is discharged through the first water outlet, and the high-pressure concentrated water is discharged through the second water outlet; the energy conversion device is respectively connected with the first water inlet, the outlet of the second water tank and the second water outlet so as to regulate the pressure of high-pressure concentrated water discharged from the second water outlet and low-pressure wastewater discharged from the outlet of the second water tank, so that the pressure of the low-pressure wastewater is increased to become high-pressure wastewater which flows into the reverse osmosis device through the first water inlet; and the high-pressure concentrated water is decompressed into low-pressure concentrated water and is discharged. The method has the effect of improving the energy utilization rate.

The utility model relates to the field of pressing devices, in particular to a pigment color cake pressing device with a waste collecting function. The technical problems that according to an existing pigment color cake pressing device, redundant waste is usually directly washed away after pressing is completed, resource waste is prone to being caused, and washing waste water easily causes environmental pollution are solved, and compared with a traditional pigment color cake pressing device, the pigment color cake pressing device has the advantages of being simple in structure and convenient to use. Comprising a workbench, a collecting assembly, a pressing assembly, a mold assembly, a supporting table, supporting columns, foot columns and suction cups, waste generated in the pressing process can be recycled through the collecting assembly, resource waste is avoided, the pressure difference between the interior and the exterior of a collecting box can be adjusted according to the actual situation through a pressure controller, and the working efficiency is improved. Automatic feeding and discharging are achieved, pigment powder in the mold assembly can be subjected to jolt-pressing through the pressing assembly, the pigment powder is pressed into cakes, the movable mold assembly can be used for forming the pigment powder, and color cakes can be automatically poured.

The utility model relates to the technical field of fishing rod coloring, in particular to a fishing rod coloring device for fishing gear production, which comprises a base, a mounting component is mounted above the base and comprises a fixing seat, the lower surface of the fixing seat is fixedly connected with the upper surface of the base, and a square groove is formed in the side surface of the fixing seat. A containing groove is formed in the inner top face of the square groove, a rotating rod is movably connected into the containing groove, one end of the rotating rod penetrates through the interior of the containing groove to extend to the outer side of the fixing base, a rotating handle is fixedly connected to one end of the rotating rod, a gear is fixedly connected to the outer surface of the rotating rod, a rack is movably connected into the containing groove, and the rack is meshed with the gear. A connecting plate is arranged in the square groove, a connecting groove is formed in the upper surface of the connecting plate, and a baffle is fixedly connected to the side surface of the connecting plate. According to the fishing rod coloring device, redundant parts of a fishing rod can be directly shielded, section spraying coloring is facilitated, time and labor are saved, and resource waste is avoided.

The invention discloses a laying hen breeding water treatment device, and particularly relates to the technical field of laying hen breeding, the laying hen breeding water treatment device comprises a bottom box, the upper end of the bottom box is fixedly connected with a fence box, and the front portion of the left side wall of the inner surface of the fence box and the front portion of the right side wall of the inner surface are jointly and fixedly provided with a drainage assembly; a filtering assembly is fixedly mounted in the middle of the left side wall and the right side wall of the inner surface of the enclosure box. According to the laying hen breeding water treatment device, through the arranged drainage assembly, when water in the water storage tank falls down, water in the enclosure box can be supplemented in time, the water level reduction degree in the enclosure box can be judged by observing the water level in the drainage assembly, and when the water level in the drainage assembly reaches the lowest level, the water in the enclosure box can be timely supplemented; the blocking assembly can be controlled to be opened by controlling the adjusting assembly, then when water is pumped through the input end of the water pump, the water is filtered through the filtering assembly, follow-up continuous use is facilitated, and waste of resources is reduced.

The utility model relates to the technical field of vacuum stop valves, and discloses a vacuum stop valve which comprises a valve body, a valve cover is installed on the top of the valve body, an installation frame is fixedly connected to the top of the valve cover, a threaded rod is rotationally connected to the inner diameter of the installation frame, and a rotating wheel is fixedly connected to the top of the threaded rod. First bosses are fixedly connected to the two sides of the middle of the front end of the mounting frame, and second bosses are fixedly connected to the two sides of the top of the front end of the mounting frame. According to the vacuum stop valve, the surface of the oiling device abuts against the surface of the threaded rod, lubricating oil can be smeared on the surface of the threaded rod through the oiling device, meanwhile, through cooperative use of a first sliding groove and a first sliding block, a user can replace the abraded oiling device conveniently, and therefore lubrication of the surface of the threaded rod is guaranteed; and the situation that the surface of the threaded rod is rusted is reduced, use by a user is facilitated, and waste of financial resources and material resources is reduced.

The utility model discloses a feeding device for high-tower pesticide fertilizer granules. The feeding device comprises a granulating box, a feeding frame is arranged below the granulating box, and a baffle is arranged on one side above the feeding frame; wherein one side of the baffle is fixedly connected with a first positioning frame, one side of the first positioning frame is provided with a rotating frame, one side of the upper end of the rotating frame is fixedly connected with a blocking strip, and one side of the lower end of the rotating frame is fixedly connected with a torsion spring; a second positioning frame is arranged on the other side of the first positioning frame, a connecting rod is arranged on one side of the bottom of the second positioning frame, locking teeth are fixedly connected to the upper end of the connecting rod, an adjusting plate is arranged on the outer side of the connecting rod, an adjusting spring is arranged at the bottom of the adjusting plate, and a guide plate is rotationally connected to the bottom of the connecting rod. The falling buffering of the pesticide and fertilizer particles is facilitated, the situation that the pesticide and fertilizer particles splash during falling is reduced, waste of the pesticide and fertilizer particles is reduced, and the situation that the pesticide and fertilizer particles scatter from the two sides of the feeding belt is conveniently reduced.

The embodiment of the invention discloses a communication module upgrading method and device for a network camera, equipment and a medium. A specific embodiment of the method comprises the following steps: acquiring upgrade patch header information corresponding to a preset communication module identifier from a preset server; performing firmware upgrade detection processing on a preset communication module corresponding to the preset communication module identifier; in response to determining that the firmware upgrading detection information represents that upgrading is needed, obtaining an increment difference upgrading index record information set from a preset server; reading a current version identifier of a preset communication module; traversing the incremental difference upgrading index record information set; in response to the determination that the traversal information is the differential upgrade package identifier, determining the traversal information as a target differential upgrade package identifier; and obtaining a target differential upgrade package file corresponding to the target differential upgrade package identifier from a preset server so as to perform differential upgrade processing on the preset communication module. According to the embodiment, the number of communication module upgrading failures and the waste of network camera storage resources are reduced.

The invention provides satellite-borne transmission and bearing integrated equipment and a rapid protection switching method and device, and the equipment comprises a common physical interface module which comprises a service interface and a space transmission interface and is used for service access and space transmission adaptation; the core processing module comprises a data processing unit and an optical layer processing unit, the data processing unit is connected with the optical layer processing unit through a high-speed backplane bus, the data processing unit is used for analysis and routing processing of data messages, and the optical layer processing unit is used for optical channel cross connection and optical layer protection; a special processing unit is arranged in the photoelectric hybrid module and is used for encapsulating and / or de-encapsulating a data message and an optical layer frame and integrating an FEC (Forward Error Correction) function; and the cross-layer cooperative control module is used for protocol linkage and resource dynamic scheduling of a data layer and an optical layer. The satellite-borne equipment has the advantages that the size is reduced, the power consumption is reduced, the low-orbit satellite load constraint is met, the resource utilization rate is improved, the reliability is high, the interruption is low, and the compatibility is high.

The invention relates to the technical field of medicine bottles, and discloses an oral medicine quantitative medicine outlet bottle which comprises a medicine outlet mechanism and further comprises a moving mechanism and a bottle body mechanism, the side face of the medicine outlet mechanism is connected with the inner side of the bottle body mechanism, and the inner side of the medicine outlet mechanism is in threaded connection with the side face of the moving mechanism. The side face of the moving mechanism is fixedly connected with the bottom end of the bottle body mechanism, the medicine discharging mechanism comprises a medicine partition plate, the side face of the medicine partition plate is fixedly connected with a sealing ring, the side face of the sealing ring is connected with the inner side of the bottle body mechanism, the inner side of the medicine partition plate is fixedly connected with a fixing frame, and the bottom end of the fixing frame is fixedly connected with a fixing piece. A groove is formed in the top end of the medicine partition plate, so that it is guaranteed that the dosage is accurate when medicine is taken every time, dosage deviation caused by improper manual operation is avoided, and therefore the medicine use safety is improved; the high-density polyethylene has good corrosion resistance to various chemical substances and is not easy to react with medicine components, so that the effectiveness and the safety of the medicine are ensured.

The utility model belongs to the technical field of filtering, and particularly relates to an air pipe filtering device which comprises a filtering shell, the left end of the filtering shell is communicated with an air inlet pipe, the upper side and the lower side of the filtering shell are respectively connected with an upper shell and a lower shell in a threaded mode, the right end of the air inlet pipe penetrates into the lower shell through a guide pipe, and a separation layer is additionally arranged in the upper shell. First gas separation membranes are arranged in the separation layer at equal intervals, the right end of the filtering shell is communicated with a flow dividing shell, a second gas separation membrane is installed on the top of the flow dividing shell, and air holes of the first gas separation membranes are different from air holes of the second gas separation membrane. According to the gas separation device, gas components can be quickly separated during selection of deviated gas components, separated gas can be collected in a split-flow manner, waste of materials for gas component treatment is facilitated, and waste of part of gas components is avoided.

This invention discloses a cantilever tunneling device and its construction method for a pumped storage power station tailrace tunnel. The device includes a cutting head and a transfer chamber. The transfer chamber is located inside the cutting head, and multiple sets of cutting teeth protruding from the cutting head are arranged on the outside of the transfer chamber. Multiple sets of mounting holes for accommodating the cutting teeth are penetrated through the outside of the cutting head. Each cutting tooth includes a mounting cylinder that penetrates into the mounting hole. The mounting cylinder is interference-fitted with the mounting hole. A hollow cylindrical toothed rod coaxially penetrates the inside of the mounting cylinder, and the toothed rod is clearance-fitted with the mounting cylinder. One end of the toothed rod extends into the cutting head and into the inner side of the transfer chamber. The advantages are: by setting movable cutting teeth on the outside of the cutting head, this invention replaces the fixed cutting teeth of existing cantilever tunneling machines, ensuring that the cutting teeth automatically spray water to cool and assist excavation during the pressure cutting process of the soil layer at the tunnel face. This improves the waste problem caused by the continuous water spraying of existing cutting teeth, and is energy-saving and environmentally friendly.

The present application provides a data processing method, system and storage medium for a control system, wherein the data processing method for a control system comprises: determining the ideal energy supply parameters of each energy supply system according to the preset total configuration capacity and the estimated energy demand of the energy-consuming objects of each energy supply system in each time interval in the unit energy supply period. The present application can uniformly allocate energy storage devices and uniformly dispatch electricity according to the load of each energy supply system, thereby improving the phenomenon of energy waste and uneven distribution of energy storage devices, thereby ensuring the smooth operation of the power system.

This disclosure provides a container resource configuration method, apparatus, and electronic device, relating to computer technology, particularly cloud computing and container deployment technologies. The specific implementation scheme is as follows: acquiring peak concurrent access information for a preset service; generating multiple test pressures based on the peak concurrent access information, and performing gradient stress tests on the container using these test pressures; collecting resource status information and service performance information of the container corresponding to each test pressure during the gradient stress test; the resource status information includes physical resource usage information; and, in response to detecting that the gradient stress test meets a preset termination condition, determining the target physical resource configuration of the container that matches the peak concurrent access information based on the resource status information and service performance information corresponding to each test pressure. The container resource configuration obtained based on the above scheme can reduce resource waste while ensuring optimal service performance.

The utility model relates to the technical field of flue gas denitration, and discloses flue gas denitration equipment which comprises a denitration equipment main body, a liquid inlet pipe sleeved at the top of the denitration equipment main body, an exhaust pipe sleeved at the left side of the denitration equipment main body, a first air pump sleeved at the middle part of the exhaust pipe, and a square groove formed in the front surface of the denitration equipment main body, sliding grooves are formed in the two sides of the inner wall of the square groove, a filter screen is arranged in an inner cavity of the square groove, sliding blocks are fixedly installed on the two sides of the inner wall of the filter screen, and two supporting legs are fixedly installed on the periphery of the bottom of the denitration equipment body. A connecting plate is fixedly installed on the right side of the denitration equipment body, a recycling box is arranged at the top of the connecting plate, a treatment box is fixedly installed on the left side of the denitration equipment body, an L-shaped pipe body is connected between the top of the treatment box and the left side of the denitration equipment body in a sleeving mode, and the middle of the L-shaped pipe body is sleeved with a second air pump.

The invention discloses a preparation method of colored suede leather base cloth, which comprises the following steps of: blending, melting and spinning by taking PA (Polyamide) slices as island phases and PE (Polyethylene) slices as sea phases to obtain sea-island fibers, needling to form non-woven fabrics, and shaping at high temperature to obtain the base cloth; preparing colored slurry containing a bridging agent and a curing agent, performing dry coating on release paper to form a coating, then laminating the coating with the shaped base cloth, and separating the release paper after drying to obtain composite coating base cloth with a colored surface layer; carrying out wet-process impregnation on the back surface of the composite coating base cloth by adopting impregnation slurry without adding color paste to form a double-layer structure; and splitting, drying, dyeing, buffing, oiling and fixing to obtain the colored suede leather base cloth. According to the preparation method of the colored suede leather base cloth provided by the invention, a product with bright color and high color fastness is prepared by optimizing a production process.

The invention relates to the technical field of photovoltaic area fire prevention, in particular to a pasture field photovoltaic area fire prevention device which comprises a photovoltaic panel used for converting solar energy into electric energy; the photovoltaic support is used for supporting and fixing a photovoltaic panel, and the support has a certain inclination angle so as to promote rainwater to slide down; and the rainwater collection bag is fixed on the photovoltaic bracket, is made of a material with excellent water storage performance, and can collect rainwater, remove impurities, improve water quality and facilitate collection and recycling of the rainwater through an efficient rainwater collection and filtration system, so that rainwater waste is effectively avoided. And secondly, due to the design of the device, the installation and maintenance work of the photovoltaic panel is simplified, and the efficiency of workers is improved. In addition, through early fire early warning and automatic fire extinguishing mechanisms, the device enhances the fireproof safety of the photovoltaic area, and reduces equipment damage and economic loss caused by fire. Meanwhile, recycling of water resources is achieved, energy is saved, and environmental pollution is reduced.

This invention discloses a frequency-constrained scheduling method for power systems that considers the speed safety of wind turbine generators, belonging to the field of electrical engineering technology. The method includes: establishing a frequency regulation dynamic model characterizing the relationship between the rotor speed change rate and power balance; analyzing the intersection of power curves based on Lyapunov functions to determine the dynamic safety range of the speed; constructing an analytical equation for the frequency response; establishing a constraint set including the initial frequency change rate, the minimum frequency point, and the steady-state frequency deviation; using the safety range and the constraint set as model constraints; utilizing SOS2 and McCormick envelopes to handle the nonlinear terms of the speed and the bilinear terms in the frequency constraints, respectively, to construct a mixed-integer linearized scheduling model; and considering the differences in frequency regulation control, solving for the scheduling scheme. This invention effectively avoids wind turbine stall tripping while ensuring frequency safety and improves the efficiency of scheduling solutions under complex constraints.

The application relates to a kind of light-storage-charging synergic optimization method, device, medium and equipment of vehicle-network interaction, and charging pile technical field, wherein the method comprises: obtaining the power generation state information of photovoltaic power generation system in park;When the power generation state information is not power generation state, according to the multiple historical charging periods of each charging pile in park and the charging load in the historical charging period, whether there is a vehicle charging in the charging pile in target period is predicted, the target period is the future period after current time;If it is predicted that there is a vehicle charging in the charging pile in the target period, the charging pile is determined as target charging pile, and the charging load demand of the target charging pile in the target period is determined;According to the charging load demand of each target charging pile, the energy storage system in the park supplies power to the corresponding target charging pile.The application has the effect of improving the problem of waste of electrical energy in park.

This utility model relates to the field of fresh air device technology and discloses a self-controlled anti-freeze temperature control device for fresh air units, including a fresh air unit box with functional partitions on both sides inside the box. This utility model uses a fresh air temperature sensor and a secondary fresh air sensor to detect the fresh air temperature, and an exhaust air temperature sensor to measure the exhaust air temperature. A temperature controller controls the electric heater to turn on, ensuring that the average temperature of multiple sensors is higher than the anti-freeze threshold. This provides both anti-freeze protection and energy savings. When the temperature is too high, the temperature controller can control the exhaust fan and exhaust impeller to utilize sensible heat recovery for auxiliary pre-cooling, reducing the cooling load on the cooling coil. When the temperature is too low, the exhaust fan and exhaust impeller stop operating, avoiding unnecessary equipment operation. This allows the device to automatically adjust and control according to temperature changes, providing excellent anti-freeze protection and being energy-efficient and environmentally friendly, greatly reducing the waste of electrical and thermal energy.

The utility model discloses a corner polishing device for ceramic tile processing, and relates to the technical field of ceramic tile processing equipment.The corner polishing device for ceramic tile processing comprises a supporting frame, a polishing equipment body is arranged at the top of the supporting frame, a water tank is fixedly installed in the supporting frame, and a connecting pipeline is fixedly installed in the water tank; one end of the connecting pipeline penetrates through the water tank and extends out of the water tank, and a pretreatment box communicating with the interior of the connecting pipeline is fixedly mounted at the upper end of the connecting pipeline. According to the corner polishing device for ceramic tile machining, through arrangement of the collecting box, dust is conveniently collected and treated, and the dust is prevented from being accumulated in the pretreatment box; therefore, a large amount of dust is prevented from being accumulated in the water tank, pollution to water in the water tank is reduced, the frequency of replacing the water in the water tank is avoided to the maximum extent, the dust content in the water is reduced, dust pretreatment is facilitated, and waste of water resources is reduced.

The utility model relates to a polyacrylamide mother liquor transfer device which comprises a hollow tank body externally connected with a liquid inlet pipe, a liquid outlet pipe and a pneumatic pipe and a push block arranged in an inner cavity of the tank body in a sliding mode, the liquid inlet pipe is communicated with the top end of the inner wall of the tank body, and the position where the pneumatic pipe is communicated with the tank body is higher than the position where the liquid outlet pipe is communicated with the tank body. The portion, located outside the tank body, of the liquid outlet pipe is further provided with a flow adjusting structure, all positions of the circumferential side face of the push block are always attached to the inner side wall of the tank body, the push block is provided with a through hole which is through in the vertical direction and allows polyacrylamide mother liquor to pass through, and the through hole is located under the communicating position of the liquid inlet pipe and the tank body. When the liquid level of the mother liquid in the tank body is in contact with the bottom surface of the push block, the push block floats on the liquid level of the mother liquid and freely slides along the vertical direction along with the lifting of the liquid level of the mother liquid. The mother liquor attached to the inner side wall of the tank body is scraped off through the push block sliding along with the mother liquor level, the mother liquor can be conveniently moved and taken, waste is reduced, and the utilization efficiency of the mother liquor is improved.

The present invention discloses a water-soluble polyvinyl alcohol pattern film, which is characterized in that: the pattern film comprises a carrier layer, a pattern layer and a pattern protection layer; the carrier layer is made of a gel reversible polyvinyl alcohol film; the pattern layer is made by printing polyvinyl alcohol pattern ink; and the pattern protection layer is made by printing polyvinyl alcohol transparent printing liquid. The water-soluble polyvinyl alcohol pattern film of the present invention uses water as a solvent during use and has no harm to the environment. The method of use is simple, the labor cost is low, and the equipment investment is small. The application range is wide, and it is suitable for artificial marble manufacturing, glass products and military equipment camouflage mapping. It solves the environmental pollution caused by adhesives and pasting patterns in the building decoration industry.