30 results about "Crystal filter" patented technology

The invention provides a high-concentration brine treatment system, and belongs to the technical field of high-concentration brine treatment. Comprising a mounting mechanism, a spraying mechanism and a storage barrel, the mounting mechanism comprises a box body, a partition plate is arranged in the box body, a collection box is arranged on one side of the partition plate, a plurality of crystallization fillers are arranged in the collection box, a crystallization filter element is arranged in each crystallization filler, and a plurality of crystallization filter elements are arranged in the storage barrel. A partition plate is arranged in the box body, a material guiding plate is arranged above the partition plate, a spraying mechanism is arranged on the side face of the box body, a first material pumping pump is arranged on one side of the partition plate, a first feeding pipe is arranged on one side of the first material pumping pump, and the first feeding pipe penetrates through the partition plate and extends into the collecting box. According to the high-concentration salt water desalting device, high-concentration salt water can be fully treated, the desalting efficiency of the high-concentration salt water is improved, salt stains adhered to the inner wall of the material storage barrel can be cleaned, salt stain residues are reduced, and therefore residual salt crystals in the material storage barrel can be better treated.

The utility model discloses evaporation and crystallization integrated equipment which comprises a crystallization tank, a spiral material lifting barrel for conveying crystals upwards is installed on the inner side of the crystallization tank, an exhaust pipe is fixed to the position, close to the left side, of the upper surface of the crystallization tank, and the upper end of the spiral material lifting barrel penetrates through the top of the crystallization tank. The lower end of the spiral lifting barrel extends to the bottom of the inner side of the crystallizing tank, and a heating chamber is arranged at the lower end of the crystallizing tank. Liquid in the heating chamber is conveyed to the dispersing pipe through the liquid pump and the liquid conveying pipe and is uniformly conveyed into the crystallizing tank, at the moment, crystal substances are filtered out through the filter screen hopper and are conveyed into the spiral material lifting barrel, and meanwhile, uncrystallized liquid is concentrated at the bottom in the crystallizing tank to be continuously crystallized and downwards settled; at the moment, the continuously working spiral lifting barrel lifts the crystal substances filtered by the filter screen hopper and the crystal substances precipitated in the crystallizing tank upwards and discharges the crystal substances outwards, so that the crystal substances are cleaned and discharged in real time, and the accumulation of the crystal substances can be effectively avoided.

The invention provides a crystal filtering device for chemical product processing, and belongs to the technical field of chemical product production, the crystal filtering device comprises a rack and a mother liquor tank arranged in the rack, the interior of the mother liquor tank is rotatably connected with a rotary drum, the surface of the rotary drum is provided with filter cloth, and the interior of the rotary drum is uniformly provided with filter chambers in the circumferential direction; a first negative pressure pipe and a second negative pressure pipe are arranged in each filter chamber; a supporting cylinder is arranged at the upper end of the rack, the front end of the rotary drum is rotationally connected with the supporting cylinder, a distribution ring rotationally connected with the rotary drum is arranged in the supporting cylinder, and a liquid drainage assembly matched with the distribution ring is arranged in each filter chamber; part of liquid can be reserved in the filter chamber, crystal particles on the wall face and corners of the filter chamber are fully wrapped and discharged into the supporting cylinder through liquid flowing in the liquid discharging process, the risk that the interior of the filter chamber is blocked is reduced, and the number of times of shutdown cleaning is reduced.

The present invention relates to a simple VHF frequency band channel transceiver, belonging to the technical field of very high frequency transceivers. It is composed of a device box and a circuit board. The device box is composed of a shell, a cover plate and a shielding cavity. The receiving / transmitting channel module installed on the circuit board contains a receiving circuit, a transmitting circuit and a power supply circuit; the receiving circuit is composed of a low-noise amplifier frequency selection, mixing, intermediate frequency amplification, intermediate frequency crystal filtering, automatic gain control, receiving demodulation and receiving frequency synthesis circuit; the transmitting circuit is composed of a transmitting frequency synthesis, a transmitting pre-stage drive amplifier, a transmitting post-stage drive amplifier and a power detection circuit; a plurality of shielding cavities are milled in the shell and the cover plate, and the shielding cavities are respectively equipped with individual module circuits of the receiving circuit and the transmitting circuit, and the shell and the cover plate are sealed and shielded for the circuit board. The integrated design of the transceiver channel machine and the radio frequency carrier 4FSK digital signal modulation are realized. The receiving intermediate frequency, image frequency, intermodulation and spurious response indicators are excellent, the multi-channel operation has no crosstalk, the analog sensitivity is high, the volume is small, the noise is small, the harmonic spurious suppression is high, and the receiving dynamic range is large.

The crystallization purification preparation system for 2, 6-dimethylnaphthalene comprises a suspension stirring crystallizer and a crystal filter, the suspension stirring crystallizer is connected to one end of the crystal filter, and the other end of the crystal filter is connected with a residual liquid tank and a static crystallizer; a mother liquid tank and a finished product tank are arranged on the first pipeline between the static crystallizer and the crystal filter; meanwhile, the residual liquid tank, the mother liquid tank and the static crystallizer are also respectively connected with a waste removal and discharge pipeline; wherein the suspension stirring crystallizer is connected with a cooling and heating all-in-one machine through a cooling and heating medium pipeline, and the static crystallizer is also connected with the cooling and heating all-in-one machine through the cooling and heating medium pipeline. According to the method, high-purity 2, 6-dimethylnaphthalene is obtained from low-value petrochemical raw materials by adopting a crystallization purification method.

The invention relates to the technical field of filtering equipment, in particular to filtering equipment for chemical production, which comprises a mounting pipe, an outer cylinder, a filtering cylinder and the like, the mounting pipe is communicated with an outer cylinder; the outer cylinder is fixedly connected with a filter cylinder for filtering crystals in the waste liquid; and a plurality of filter holes are formed in the filter cartridge. According to the filtering equipment, crystals in waste liquid are filtered through the filtering cylinder, then the filtering holes are plugged through the plugging cylinder, washing liquid is conveyed into the filtering cylinder through the liquid inlet pipe, and finally the crystals are stirred through the stirring plate, so that the filtering equipment not only can be used for filtering the waste liquid and the crystals, but also can be used for washing the crystals; the filtering equipment can be used for two purposes, so that the problems that the actual production cost is inevitably increased and factory production is not facilitated due to the fact that washing equipment needs to be additionally purchased to wash crystals because existing filtering equipment cannot wash the crystals are solved.

The invention discloses a radio frequency front end of a radar receiver with a large dynamic range, relates to the field of wireless communication, and aims to solve the problem that a third-order intercept point and a noise coefficient are difficult to meet indexes under the condition that an existing receiver meets high sensitivity. The method comprises the following steps: a receiving calibration switch selects to input an antenna signal and a calibration signal into a preposed step attenuator, the antenna signal and the calibration signal enter a numerical control tuned filter after impedance matching by a matching circuit, an output tuned and filtered signal enters a low-noise amplifier, and the signal after low-noise amplification and a receiving gate enter a frequency mixer after being selected by a transceiving switch; and the weak intermediate-frequency signal is subjected to signal intensity adjustment through the first amplifier and the rear step attenuator in sequence, and is processed by the crystal filter and the amplifier twice to output the intermediate-frequency signal. Under the condition of high sensitivity, the optimal signal-to-noise ratio can be obtained, the noise coefficient is reduced, the influence on a channel third-order intercept point index is reduced, and the harmonic suppression degree of an intermediate-frequency signal is improved.

The utility model discloses a miniature crystal filter, and relates to the technical field of wireless communication. The filter comprises a filter base and a filter core group, the filter base comprises a metal substrate and a metal lead column, and the metal lead column penetrates through the metal substrate; the filter core group comprises a printed circuit board, a chip capacitor, a crystal resonator and a magnetic ring; and the printed circuit board is welded with the metal lead columns. The filter core group is vertically mounted, and the chip capacitors are assembled at positions reserved between the left and right ends of the upper-layer plate and the two columns of crystal resonators, so that the capacitors and the crystal resonators are in the same plane, and the height space consumption of the filter is reduced.

The application discloses a preparation method of high-purity needle-shaped sodium sesquicarbonate crystals and relates to the technical field of inorganic salt crystallization treatment. The sodium sesquicarbonate crystal mother liquor is prepared by dissolving sodium carbonate and sodium bicarbonate, a complex additive composed of polyvinylpyrrolidone and sodium dodecyl sulfate is added into the crystal mother liquor, and crystallization is carried out under the synergistic action of pulse ultrasonic waves, so that needle-shaped sodium sesquicarbonate crystal slurry with a high length-diameter ratio is obtained. After solid-liquid separation, the obtained needle-shaped sodium sesquicarbonate crystal filter cake is washed by anhydrous ethanol under low-temperature conditions, residual moisture among the crystals and on the crystal surface is replaced, the crystals washed by anhydrous ethanol are placed in a supercritical carbon dioxide environment for static drying, the whole-chain anti-agglomeration protection of the needle-shaped sodium sesquicarbonate crystals from crystallization growth to the final dried products is realized, thermal decomposition of the sodium sesquicarbonate is avoided, and the method is suitable for high-quality industrialized preparation of thermosensitive hydrated salts.

The utility model discloses a high-frequency crystal filter structure, and particularly relates to the technical field of design and manufacture of crystal filters for communication navigation, which comprises a box body, a bottom plate base is arranged on the lower surface inside the box body, a PCB (printed circuit board) is arranged on the bottom plate base, and the PCB is of a single-sided circuit board structure. The surface of the PCB is provided with a plurality of surface-mounted elements, and the bottom of the PCB is provided with a long-strip-shaped bonding pad. According to the utility model, a PCB (Printed Circuit Board) and a surface-mounted element used in the existing filter structure technology are improved, so that the purposes of high reliability and light weight are achieved.

Hybrid lattice filters with acoustic baluns are disclosed. In one aspect, a hybrid lattice filter may be formed using acoustic elements. The hybrid lattice filter may operate with acoustic baluns such as coupled resonator filters (CRF) or stacked crystal filters (SCF). To achieve the desired common mode rejection, an additional rejection or low common mode intermediate impedance network may be supplied between the acoustic balun and the hybrid lattice filter. By combining the acoustic balun with the low common-mode intermediate impedance network and the hybrid lattice filter, a passband filter with a desired bandwidth may be created.

The invention provides a miniaturized wide-passband narrow-stop-band quartz crystal filter and a processing method thereof, and belongs to the technical field of filters, and the method comprises the steps: determining the shape and size of a wafer according to the size and technical parameters of a preset target filter; designing an A-surface electrode and a B-surface electrode which are matched with each other; a surface electrode A and a surface electrode B are coated on the wafer, and the electrodes are fine-tuned and packaged after being connected. According to the processing method provided by the invention, the miniaturized wide-passband and narrow-stop-band quartz crystal filter can be produced through the design of the wafer size and the electrodes, and the problem that the traditional wide-passband and narrow-stop-band filter can only be realized by adopting a combined filter formed by combining a plurality of large-size monolithic quartz crystal filters is solved.

This application relates to the technical field of stacked crystal filters, and specifically provides a stacked crystal filter and a duplexer. The filter includes: a first substrate, a first bottom electrode, a first piezoelectric layer, an intermediate electrode, a second piezoelectric layer, and a first top electrode, which are connected in sequence from top to bottom; when the intermediate electrode and the first bottom electrode are commonly grounded, the intermediate electrode is connected to the first bottom electrode, and the edge of the projection of the connection point in the top view direction is located within the edge of the projection of the electrode connected to the ground terminal in the top view direction. When the intermediate electrode and the first top electrode are commonly grounded, the intermediate electrode is connected to the first top electrode, and the edge of the projection of the connection point in the top view direction is located within the edge of the projection of the electrode connected to the ground terminal in the top view direction; this filter can effectively solve the problem that due to the need for three electrodes to extend outward in the stacked crystal filter, there are too many spurious modes generated, and the performance of the stacked crystal filter is significantly weakened.

The invention discloses an optical fiber type natural light illumination system for agriculture and light complementation application. The optical fiber type natural light illumination system comprises a bionic light energy collection layer, a light source layer and a light source layer, according to the intelligent light transmission layer, photosensitive liquid crystal adjusts the refractive index to optimize a light path according to light intensity data; when light attenuation of a main channel exceeds a threshold value, a standby channel is automatically switched, a shape memory alloy spring compensates temperature deformation, compressed air periodically cleans an optical fiber end face, optical fiber total reflection light is transmitted to the position below a photovoltaic panel, and then light below the panel is reflected to the ground and crops. According to the precise light regulation and control layer, a multispectral camera monitors crop canopy spectrum to generate a dynamic light formula, a photonic crystal filter decomposes wave bands, a micro-lens array is shaped into rectangular light spots, and surplus light energy is converted into electric energy to be used for power supply of agricultural monitoring equipment at night or emergency lighting in extreme weather. And the ecological collaboration layer is used for collecting environmental parameters and crop physiological indexes, calculating an optimal light intensity / spectrum and temperature and humidity threshold range, generating a differentiated regulation and control instruction and continuously monitoring a regulation and control effect.

The invention discloses a cephalosporin production crystal filtering device which comprises a filter, and a filter tank and a crystal conveying structure are arranged in the filter; the strip-shaped filter screen is arranged in the filter, the strip-shaped filter screen is configured to periodically pass through the filter tank and be attached to the inner wall of the filter tank to form sunken movement, the strip-shaped filter screen is provided with a plurality of partition plates with filter holes, the bottom of the filter tank is communicated with a liquid output pipe, and the strip-shaped filter screen is matched with the filter tank, so that a sunken part can be formed in the filter tank; according to the crystal conveying structure, input liquid with crystals is filtered, filtrate penetrates through a strip-shaped filter screen to be output through a liquid output pipe at the bottom, the crystals are conveyed from a low position to a high position under the conveying of the strip-shaped filter screen, and the crystals are separated from the strip-shaped filter screen to fall into the crystal conveying structure to be collected and conveyed after being conveyed to a certain degree under the action of gravity; and continuous and high-efficiency crystal filtration is realized.

The utility model relates to the technical field of filters, and provides an anti-blocking filter which comprises a filter cartridge, a circular groove is formed in the center of the inner wall of the filter cartridge, a discharge port is formed in the center of the bottom of the filter cartridge and communicated with the circular groove, a screen is arranged on one side of the discharge port, fixing rods are connected to the four corners of the screen in a screwed mode, and the fixing rods are connected with the filter cartridge in a screwed mode. The other ends of the fixing rods are screwed and fixed with the inner wall of the filter cartridge, a bracket is welded among the four fixing rods, and the center of the bracket is screwed with a speed reducing motor; according to the anti-blocking filter, gibbsite crystals in alkaline liquid can be filtered out through the screen, the speed reducing motor drives the scraper to rotate, the gibbsite crystals filtered out through the screen can be pushed to the discharging opening, the cleaning effect is achieved, meanwhile, the arc-shaped scraper structure is matched with the circular groove, and the cleaning effect is improved. The crystals can be better guided to move to the discharging opening, the supporting and fixing effect on the gear motor can be improved through the X-shaped support, and the stability of the filter cartridge is improved.

The invention provides a filtering device for aluminum oxide production, which is characterized by comprising a vibrating screen platform, a filtering screen assembly, a vibrating motor, a plurality of spring seats and a recycling box, the vibrating screen platform is erected between the mother liquor discharging pump and the causticization reaction tank so as to form a frame structure for supporting the filter screen assembly and the recycling box; the filter screen assembly is elastically connected with the vibration screen platform through a plurality of spring seats, and the vibration motor is fixedly connected with the filter screen assembly so as to drive the filter screen assembly to perform vibration screen on mother liquor; and the recycling box is fixedly arranged on one side of the vibration screening platform so as to recycle carbonate crystals filtered out by the filter screening assembly after the vibration motor is started. Resonance is formed between the vibration motor and the filter screen assembly, so that the mother liquor flowing out of the mother liquor discharging pump is subjected to multi-dimensional vibration screening to complete the recovery process of carbonate crystals, and the problem that an existing filter is likely to break down when recovering the carbonate crystals due to the change of the technological process is solved.

The present invention discloses a crystal filter element, which includes a plurality of bulk resonators, a first input endpoint, a second input endpoint, a first output endpoint and a second output endpoint. The plurality of bulk resonators are divided into two types: a first bulk resonator having a series relationship with the two output endpoints and a second bulk resonator having a parallel relationship with the two output endpoints. Each bulk resonator includes a substrate, a first electrode and a second electrode. The substrate includes a growth substrate and a crystal thin film layer disposed on the growth substrate. The crystal thin film layer has an upper surface and a lower surface partially exposed outside the growth substrate. Each first electrode is disposed on the corresponding exposed lower surface of the crystal thin film layer, and the second electrode is disposed on the upper surface of the crystal thin film layer. There are at least two first bulk resonators, and each first bulk resonator is distributed on the same first arc, and the position thickness of the crystal thin film layer corresponding to the first arc is the same. A preparation method of the above crystal filter element is also disclosed.

The present invention discloses a method for inducing the preparation of a PVDF film based on lead zirconate titanate, a PVDF film, and applications thereof. The method comprises: step 1, preparing a PVDF solution; step 2, polarizing a PZT film; and step 3, forming a PVDF film. This method uses the polarized PZT to induce the growth of a PVDF film with a single orientation and a high β-orientation content. The resulting PVDF film exhibits a higher piezoelectric constant and electromechanical coupling coefficient, and is suitable for applications in a variety of fields, including piezoelectric crystal filters, triboelectric nanogenerators, sensors, brakes, and biological applications, with improved applicability.

The utility model relates to a pot mold waste alkali liquor recovery system which comprises pot mold grooves, a waste alkali liquor collecting groove, a crystallization reaction tower, a crystal filtering groove, a recycled alkali liquor barrel, a centrifugal machine and a separated liquid barrel, each pot mold groove is communicated with the waste alkali liquor collecting groove through a collecting pipe, and the waste alkali liquor collecting groove is communicated with the crystallization reaction tower through a waste alkali liquor lifting pipe. One side of the top of the crystallization reaction tower is provided with an overflow pipe inserted into the crystal filtering groove, the bottom of the crystal filtering groove is provided with a liquid guide pipe inserted into the recycled alkali liquor barrel, and the bottom of the side surface of the recycled alkali liquor barrel is provided with a liquid distribution pipe for respectively feeding recycled alkali liquor into each pot mold groove; one side of the bottom of the crystallization reaction tower is communicated with a mixed liquid inlet of the centrifugal machine through a mixed liquid conveying pipe, a separation liquid conveying pipe inserted into a separation liquid barrel is mounted on the side surface of the centrifugal machine, and the separation liquid barrel is communicated with the crystallization reaction tower through a separation liquid lifting pipe. The system has the beneficial effects that the system structure is simplified, sodium hydroxide crystal particles discharged into the crystal filter tank are reduced, and the cleaning frequency of the crystal filter tank is reduced.

The utility model relates to the field of crystal filters, in particular to a composite crystal filter, which comprises a filter shell used for providing protection capability for internal components and a fixed clamping groove arranged inside the filter shell and used for being connected with an upper shell cover, and a fixed clamping block is movably connected inside the fixed clamping groove. According to the utility model, the fixing clamping groove, the fixing clamping block, the upper shell cover, the inner sealing groove, the moisture-proof sealing ring and the edge sealing joint strip are arranged, so that when the device is used for production and installation, other components can be installed in the filter shell; the upper shell cover and the filter shell are assembled through the fixing clamping grooves and the fixing clamping blocks to complete production of the composite crystal filter, and then the stability of connection between the upper shell cover and the filter shell is enhanced through the outer fastening bolts and the edge sealing joint strips. And in addition, in-time disassembly and maintenance can be conveniently carried out when internal components break down.

This invention discloses an automatic testing system for quartz crystal filters based on a vector network analyzer, belonging to the field of electronic testing and measurement technology. It includes a frequency path recording module, an offset identification module, a backtracking reconstruction module, a rhythm alignment module, and a curve output module. The frequency path recording module acquires response change data corresponding to each frequency position during the frequency sweep process and records the correspondence between each frequency position in the sweep sequence, forming a frequency position change record. By constructing a frequency position change record and tracking the correspondence, this invention maintains a true correlation between frequency position and response change data during the frequency sweep process, and achieves abnormal segment identification and data recovery during sequential offsets, avoiding performance parameter calculation deviations. Simultaneously, through backtracking and rhythm alignment, the response change process is made continuous and consistent, and the performance curves are rearranged for all frequency positions, thereby improving the accuracy and stability of the test results.

The utility model discloses a small-size high-frequency band-pass surface-mounted crystal filter, particularly relates to the field of surface-mounted crystal filters, and comprises a PCB mainboard, and the surface of the PCB mainboard is provided with a slotted hole, a first mounting groove, a second mounting groove and a third mounting groove. A plurality of positioning grooves are symmetrically formed in the periphery of the PCB main board, a capacitor board and a crystal board are arranged on the surface of the PCB main board, and a shielding clamp is arranged at the top of the crystal board. According to the utility model, the capacitor plate and the crystal plate are inserted into the third mounting groove and the second mounting groove through the mounting strips to be mounted and fixed on the PCB mainboard, the fine tuning capacitor and the fixed capacitor are welded on the capacitor plate, and the iron sheet crystal is welded on the crystal plate; in the repair process, only the capacitor board and the crystal board need to be replaced, the whole PCB mainboard does not need to be replaced, the production cost and the maintenance cost are reduced, and the production efficiency is improved.

The invention relates to the technical field of stacked crystal filters, and particularly provides a stacked crystal filter and a duplexer, and the filter comprises a first substrate, a first bottom electrode, a first piezoelectric layer, an intermediate electrode, a second piezoelectric layer and a first top electrode which are sequentially connected from top to bottom; when the middle electrode and the first bottom electrode are grounded together, the middle electrode is connected with the first bottom electrode, and the edge of the projection of the connection position in the overlook direction is located in the edge of the projection of the electrode connected with the grounding end in the overlook direction. The middle electrode is connected with the first top electrode, and the edge of the projection of the joint in the overlook direction is located in the edge of the projection of the electrode connected with the grounding end in the overlook direction; the filter can effectively solve the problems that due to the fact that a stacked crystal filter needs to extend outwards to form three electrodes, too many stray modes are generated, and the performance of the stacked crystal filter is obviously weakened.

The invention belongs to the technical field of optical fiber sensing, and particularly relates to an optical phase-locked loop (DFB) strain sensor based on injection locking, which comprises a PDH injection locking module, an optical phase-locked loop module and a strain sensing distributed feedback fiber laser module, the PDH injection locking module comprises a tunable narrow linewidth laser, a first optical fiber coupler, a phase modulator, an optical fiber circulator, a single-channel photoelectric detector, a lock-in amplifier, a first loop filter and a signal generator; the optical phase-locked loop module comprises an acousto-optic modulator, a second optical fiber coupler, a balanced photoelectric detector, a crystal filter, an amplitude detector unit, a second loop filter and a direct digital frequency synthesizer. According to the invention, high-resolution strain real-time measurement of the distributed feedback fiber laser can be realized, self free operation noise interference of a traditional strain sensing scheme based on the distributed feedback fiber laser is effectively solved, and higher strain measurement resolution is achieved.

The invention belongs to the technical field of crystal filter design, and particularly relates to a single-chip high-integration crystal filter, which comprises a chip, and an input end crystal resonance unit group and an output end crystal resonance unit group which are arranged on the chip, the input end crystal resonance unit group comprises a rectangular electrode A and a rectangular electrode B which are arranged on the upper surface of the wafer, and a rectangular electrode C arranged on the lower surface of the wafer; the output end crystal resonance unit group comprises a rectangular electrode D and a rectangular electrode E which are arranged on the upper surface of the wafer, and a rectangular electrode F arranged on the lower surface of the wafer; a signal of the input end passes through the input end crystal resonance unit group, then enters the output end crystal resonance unit group in series, and finally is transmitted to the output end; according to the invention, high performance can be ensured while the compact size of the filter is maintained.

This invention discloses a chemically strengthened glass surface treatment device, relating to the field of chemically strengthened glass production technology. It includes a salt bath tank and a crystal filter assembly. Guide rails are provided on both sides of the inner wall of the salt bath tank. The crystal filter assembly includes a floating frame slidably connected to the surface of the guide rails via guide wheels. A limiting frame is provided at the bottom of the guide rails on the inner wall of the salt bath tank. Lifting support plates are fixed on both sides of the top surface of the floating frame, and the surfaces of the lifting support plates are used to support a basket loaded with glass. This chemically strengthened glass surface treatment device utilizes the gravity of each batch of glass undergoing chemical strengthening to press down the floating frame. A filter plate rotates to a horizontal position, closing the hollow part of the floating frame to filter the solution, causing the solution to rise to the upper strengthening chamber, while the crystallizing slag is pressed down and collected in the lower processing chamber. This ensures the purity of the solution during each batch of glass undergoing chemical strengthening, preventing excessive crystallizing slag content in the solution from affecting the chemical strengthening effect of the glass.

The utility model discloses a Fenton fluidized bed rapid crystallization device which comprises a reaction tower, a raw water adjusting assembly, a crystal filtering assembly, a crystal separation box, a reflux tank assembly, a sulfuric acid liquid storage barrel, a ferrous sulfate liquid storage barrel, a hydrogen peroxide liquid storage barrel, a raw water rapid mixer, a reflux rapid mixer I and a reflux rapid mixer II, the reaction tower comprises a downstream assembly, a countercurrent assembly, a steady flow layer I, a steady flow layer II, a crystallization layer, a baffling layer, a solid crystal assembly and a feeding assembly which are sequentially arranged from bottom to top; through control of the raw water quick mixer, the first backflow quick mixer and the second backflow quick mixer on reaction water flow and synergistic reaction between the upper layer and the lower layer, quick crystallization is realized. The device is fast in crystallization and low in reagent consumption.

The utility model relates to sodium chlorate evaporation crystallizer technical field discloses a sodium chlorate evaporation crystallizer with crystalline particle screening function, including crystallization pipe, the bottom of crystallization pipe is installed with no. The bottom of no. The bottom of no. The bottom of no. The top of crystallization pipe is installed with evaporation chamber. The utility model discloses through setting crystal filter structure, the crystal particle that crystallization pipe inside production uses the filter of no. The bottom of no. The bottom of no. The bottom of no. The top of crystallization pipe is installed with evaporation chamber. The utility model discloses through setting crystal filter structure, the crystal particle that crystallization pipe inside production uses the filter of no. The bottom of no. The bottom of no. The bottom of no. The top of crystallization pipe is installed with evaporation chamber.

The invention relates to the technical field of 2-chloronicotinic acid production, in particular to a 2-chloronicotinic acid comprehensive treatment system and method.The 2-chloronicotinic acid comprehensive treatment system comprises a crystallizing tank, a feeding pipe and a crystal taking assembly, and the feeding pipe is communicated with the upper portion of the crystallizing tank; the crystal taking assembly comprises a crystallization tank, a crystal filtering membrane and a plurality of plug bodies, the crystallization tank is provided with a plurality of drain holes, the crystallization tank is arranged in the crystallization tank, the crystal filtering membrane is arranged in the crystallization tank, and the plug bodies are respectively matched with the corresponding drain holes; firstly, 2-chloronicotinic acid preparation raw materials are added through the feeding pipe, then 2-chloronicotinic acid production can be started, after 2-chloronicotinic acid is crystallized, the plug body is moved, the drainage holes are opened, waste water flows out downwards through the multiple drainage holes, crystals are filtered under the action of the crystal filtering membrane, and therefore a water pipe discharging mode is not needed, the discharged water flow impact force is reduced, and the production efficiency is improved. And moreover, the crystals are filtered while being discharged, so that the crystal taking efficiency and the crystal taking quality are remarkably improved.