80results about How to "Guaranteed flow rate" patented technology

The invention provides a pulse assembly, a suction valve, an endoscope and an implantation system, and relates to the field of medical instruments.The pulse assembly comprises a communication part provided with a channel, the channel is provided with an inlet and an outlet, and the inlet is used for being communicated with an instrument tube and / or a sheath tube; the shielding piece is arranged on the communicating part and located between the inlet and the outlet, and the shielding piece has a first state and a second state; the driving part is used for driving the shielding part to be switched between the first state and the second state; when the shielding piece is in the first state, the channel is completely opened; and when the shielding piece is in the second state, at least part of the channel is blocked. Compared with the prior art, the calculus flushing device has the advantages that the flowing speed of flushing fluid can be adjusted by intermittently changing the flowing area of the flushing fluid, and then the calculus flushing effect is effectively improved.

The invention discloses an in-reactor fuel irradiation test loop based on the working condition of a pressurized water reactor. The in-reactor fuel irradiation test loop comprises a main circulation system, a purification system, a fission substance release monitoring system, a water supplementing system, an emergency cooling system, a cooling water system, an in-reactor device pressure failure online monitoring system, a reactor shutdown protection system, a thermal parameter measurement system, a power supply system and an air ventilation and exhaust system. According to the loop, a pressurized water reactor working condition environment is realized, and various technical indexes such as temperature, pressure, flow velocity and water quality required by fuel test are ensured to be reached; the safety level of each system is reasonably configured, so that the requirements of laws and regulations are met, and the safety performance of the loop is improved; by reasonably arranging a multi-stage cooling water system, an air exhaust system and the like, the radioactive activity of an exhaust flow is reduced, the environmental safety is ensured, the release of radioactive aerosol in a process is eliminated, the exposure dose of workers is reduced, the safety of the workers is ensured, the safety risk of devices in the reactor to the reactor under the working condition of a fracture accident is eliminated, and the reliability of the system is improved.

The invention relates to an oily sewage treatment device based on cooperation of rotational flow, air floatation and coalescence, belongs to the technical field of oily sewage treatment, and solves the problem that a current treatment device cannot realize oil-gas separation, the oily sewage treatment device comprises: a tank body, the bottom of which is provided with a drain pipe and the top of which is provided with an exhaust pipe; the conical inner cylinder is fixed in the tank body, a plurality of water distribution pipes are arranged at the bottom of the inner space of the conical inner cylinder, the liquid outlet ends of the water distribution pipes are arranged in the tangential direction of the conical inner cylinder, the water distribution pipes are connected with the water inlet mechanism, and a coalescence plate is arranged between the conical inner cylinder and the tank body; the oil-gas separation mechanism is fixed in the tank body and located above the conical inner barrel and comprises an oil collecting cover, the oil collecting cover is of an arc-shaped structure protruding upwards, an outlet is formed in the center of the oil collecting cover, a baffle is arranged above the outlet, the top of a collecting area above the oil collecting cover is communicated with an exhaust pipe arranged at the top of the tank body, and the bottom of the collecting area above the oil collecting cover is communicated with an oil discharging pipe arranged on the side portion of the tank body; the sewage treatment device provided by the invention meets the requirement of oil-gas separation.

The invention provides a motor end cover and an industrial motor, the motor end cover comprises an end cover body and a fan housing, the end cover body is provided with an inner side surface used for being assembled with a non-driving end of the motor and an outer side surface located at the outer side of the inner side surface, the outer side face comprises a fan blade assembly face located in the center area of the outer side face and an air guide ring face located in the edge area of the outer side face and arranged around the fan blade assembly face, the fan housing is arranged around the radial outer side of the end cover body, and an air outlet channel of the centrifugal fan blade is formed between the fan housing and the air guide ring face. A plurality of partition pieces are arranged between the fan housing and the air guide ring face and divide the air outlet channel into a plurality of cooling channels, and the cooling channels extend in the axial direction of the end cover body. According to the invention, air flow guide can be formed before the air outlet flow of the centrifugal fan blades enters the heat dissipation flow channels among the heat dissipation fins of the subsequent motor shell, so that the initial air speed value of the cooling air flow entering the heat dissipation flow channels of the motor shell is effectively increased, and the heat dissipation effect is enhanced.

The invention discloses an anti-explosion dust remover which comprises an anti-explosion dust removal box, an exhaust fan and a centrifugal reverse spraying fan. An upper interlayer and a lower interlayer are arranged in the explosion-proof dust removal box, a filtered bin is arranged between the upper interlayer and the lower interlayer, and a to-be-filtered bin is arranged on the lower side of the lower interlayer; an air inlet nozzle communicated with the to-be-filtered bin is arranged on one side of the anti-explosion dust removal box; a plurality of vertical-barrel-shaped anti-static dust filters are fixed to the lower side of the lower interlayer in an array mode, the upper air outlet end of each vertical-barrel-shaped anti-static dust filter communicates with a horn-shaped air outlet nozzle, and the upper end of each horn-shaped air outlet nozzle communicates with a filtered bin; and the flexible anti-static filter cartridge can be subjected to more thorough spray-back cleaning.

The invention provides a pulse assembly, a suction valve, an endoscope and an implantation system, and relates to the field of medical instruments.The pulse assembly comprises a communication part provided with a channel, the channel is provided with an inlet, a first outlet and a second outlet, and the inlet is used for being communicated with an instrument tube and / or a sheath tube; the shielding piece is movably arranged on the communicating part, and the shielding piece can intermittently block the first outlet under the movable condition; and the driving part is used for driving the shielding part to move, so that the first outlet is intermittently blocked. Compared with the prior art, the device has the advantages that pulse control over the flow speed of washing liquid is achieved, the stone removing efficiency in the operation process is remarkably improved, meanwhile, different operation requirements can be flexibly met, the operation time is effectively shortened finally, and discomfort and risks of a patient are reduced.

The invention discloses a radial drilling machine for hardware machining, and relates to the technical field of radial drilling machines, the radial drilling machine comprises a base, two sets of supporting legs are symmetrically installed at the bottom of the base, a drilling machine body is arranged at the top of the telescopic base, the radial drilling machine further comprises a slag discharging groove and a fixing plate, the slag discharging groove is formed in one side of the interior of the base, and one side of the interior of the slag discharging groove is fixedly provided with the fixing plate; the top of the fixing plate is fixedly provided with a placing table, a metal net is fixedly installed on the upper portion of the interior of the slag discharging groove, the cleaning assembly is arranged on one side of the top of the base, the cleaning assembly comprises a supporting plate and a collecting assembly, the collecting assembly is arranged on one side of the bottom of the base, and the supporting plate is fixedly installed on one side of the top of the base; according to the hardware drilling device, chippings on the placing table can be conveniently cleaned after hardware is drilled, the cleaning effect can be guaranteed, tiny chippings can be cleaned, the cleaning convenience is improved, residues existing in cleaning are avoided, the cleanliness of the placing table is improved, and the subsequent drilling work is prevented from being affected.

The invention relates to the technical field of thin-wall bearing production equipment, and particularly discloses thin-wall bearing production equipment and a production technology.The thin-wall bearing production equipment comprises a rack, a mounting plate is arranged on the rack, a first guide rail, a second guide rail and a swing arm are arranged on the mounting plate, and a material guide arc plate is arranged on the second guide rail; a first cooling liquid spraying pipe and a second cooling liquid spraying pipe are arranged above the right side of the material guiding arc plate, an elastic piece is arranged in the middle of the material guiding arc plate, the first cooling liquid spraying pipe right faces the elastic piece of the material guiding arc plate, a fixing block is installed on the elastic piece, an elastic telescopic rod is connected to the bottom of the fixing block, and a fixing plate is arranged at the bottom of the elastic telescopic rod. Cooling liquid sprayed out of the first cooling liquid spraying pipe impacts the elastic piece, so that the elastic piece is sunken downwards, and the liquid is sputtered upwards. Sputtered liquid can fully wash the lower area of the bearing ring, so that cooling is more sufficient.

The present invention relates to the technical field of condensers, and discloses an integrated temperature control optimized condenser system, comprising an outer tube, a bracket arranged at the bottom of the outer tube, covers arranged at both ends of the outer side of the outer tube, a refrigerant joint arranged at the outer side of the outer tube, a cooling medium joint arranged at the outer side of one end cover, a mounting plate arranged inside the outer tube, a heat exchange tube arranged in the mounting plate, and also comprises an adjustment component arranged on the surface of the mounting plate, and a control component arranged on the surface of the adjustment component. The integrated temperature control optimized condenser system, by setting the adjustment component, controls the movement of a corresponding number of adjustment strips when the temperature needs to be adjusted, so that a certain proportion of the connecting holes are docked with the docking port, and only needs to replace this part of the heat exchange tubes during maintenance, thereby extending the service life of the entire equipment, and thus ensuring the flow rate of the cooling medium in the heat exchange tubes, avoiding the accumulation of impurities in the cooling medium, and ensuring the heat exchange efficiency of the heat exchange tubes.

The invention provides an absorption tower structure and a carbon capture system with the same. The absorption tower structure comprises a tower body; the unit channels are arranged in the tower body, all the unit channels extend in the length direction of the tower body, and the unit channels are sequentially arranged in the circumferential direction of the tower body; with the radial direction of the tower body as the transverse direction, the area of the cross section of each unit channel is arranged in a preset proportion; the spraying assemblies are arranged at the tops of the unit channels, the spraying assemblies are divided into multiple groups, and the multiple groups of spraying assemblies and the multiple unit channels are arranged in a one-to-one correspondence mode; the air inlet channel is arranged at the bottom of the tower body, and the air inlet channel is selectively communicated with one or more unit channels in the unit channels. The problem that in the prior art, the smoke amount is not matched with the size of an absorption tower, and consequently gas-liquid distribution is not uniform is solved.

The utility model discloses a novel W type pipeline filter which comprises a pipe body, two ends of the pipe body are respectively a water inlet end and a water outlet end, two obliquely arranged filter pipe bodies are symmetrically arranged on the outer wall of the pipe body, one end of each filter pipe body extends into the pipe body and is communicated with the pipe body through a water passing hole, and the other end of each filter pipe body is communicated with the water passing hole. The filter pipe bodies and the inner wall of the pipe body are connected through water baffles, the two filter pipe bodies located in the pipe body are connected through water baffles, the water baffles are located on the rear sides of the water passing holes, and filter screen cylinders are detachably arranged in the filter pipe bodies. And the other end of the filter pipe body is in threaded connection with a filter pipe body nut. The two filter pipe bodies are arranged on the pipe body, and the two filter screen cylinders work at the same time, so that the area of liquid passing through the filter screen cylinders is increased, the cleaning and maintenance period of the filter screen cylinders is prolonged, and the cleaning and maintenance cost and the influence of frequent shutdown on normal operation of equipment are reduced.

The invention relates to a production process of a duplex stainless steel seamless steel tube for a high-precision heat exchanger, the steel grade of the duplex stainless steel seamless steel tube is 022Cr23Ni5Mo3N, and the duplex stainless steel seamless steel tube comprises the following chemical components in percentage by weight: less than or equal to 0.03% of C, less than or equal to 1.00% of Si, less than or equal to 2.00% of Mn, 22.00-23.00% of Cr, 4.50-6.50% of Ni, 3.00-3.50% of Mo, less than or equal to 0.03% of S and less than or equal to 0.030% of P. And the typical specifications of the high-frequency frequency converter are phi 25.4 * 1.651, phi 31.75 * 1.651 and phi 38.1 * 2. The manufacturing method comprises the following steps: (1) manufacturing a pipe blank; (2) hot punching; (3) cold rolling; (4) heat treatment; (5) straightening; and (6) pickling. The room-temperature tensile strength of the finished pipe is larger than or equal to 655 MPa, the room-temperature yield strength is larger than or equal to 485 MPa, the percentage elongation after fracture is larger than or equal to 25%, the hardness HRC is smaller than or equal to 28, the structure is uniform, the ferrite content is 45%-55%, the heat conductivity coefficient is larger than or equal to 17.6 W (m.K)-1 (0 DEG C), and the spot corrosion rate lt is achieved. And 0.01 g / m < 2 > / 24Hrs (25 DEG C, 6% FeCl3 solution, 72 hours) can meet the requirements of the heat exchanger.

The application provides a kind of wisdom gas terminal energy-saving control Internet of Things system and method, it is related to Internet of Things technical field, this method is based on the wisdom gas management platform of wisdom gas terminal energy-saving control Internet of Things execution, including: by wisdom gas object platform obtains the gas use data and gas image data of target user;Based on gas use data, gas image data determines combustion state distribution;In response to the combustion state distribution meets preset condition, based on combustion state distribution determines energy-saving parameter;And based on energy-saving parameter determines energy-saving instruction and driven adjustment instruction, to adjust the valve opening of valve control device based on energy-saving instruction and driven adjustment instruction.The combustion state is evaluated, and the energy-saving parameter is adjusted according to the state of combustion, so as to appropriately reduce the gas flow rate, in the case of ensuring that the provided gas flow rate meets the user demand, the effect of energy saving and environmental protection is achieved.

The utility model relates to the technical field of tail gas treatment, and discloses an exhaust pipeline tail gas adsorption and purification device which comprises an inner container, a shell is sleeved outside the inner container, a guide structure for guiding a medium is arranged in an interlayer space, a recovery structure is arranged in a cavity of the inner container, and the recovery structure comprises a turbulent flow cover, a collection body, a flange and a discharge pipe. A plurality of turbulent flow covers are fixedly connected in a cavity of the inner container, the collecting body is fixedly connected with the inner container, the blocking edge is fixedly connected with the collecting body, and the discharging pipe is fixedly connected with the blocking edge and extends out of the shell. The solvent rises along with air, adheres to the wall faces of the turbulent flow covers, is guided by the wall faces of the turbulent flow covers, drips downwards, falls on the top face of the collecting body, is collected through the storage cavity defined by the flanges and is discharged out of the shell through the discharging pipe, collection of the solvent in tail gas is achieved, volume loss can be reduced, and recycling is achieved.

The utility model relates to a medium circulation structure, a cold and hot compress host, a cold and hot compress assembly and a cold and hot compress device, and belongs to the technical field of heating and refrigerating combined systems. The medium circulation structure comprises a circulation connector and an inner connecting pipe, the circulation connector is provided with a circulation cavity for installing the inner connecting pipe, the two ends of the inner connecting pipe penetrate through the circulation cavity, one end of the inner connecting pipe is connected with the circulation cavity, and the other end of the inner connecting pipe extends out of the circulation cavity. The circulation connector is provided with a first through hole and a second through hole which are communicated with the circulation cavity, and the first through hole, the second through hole and the circulation cavity form a flow channel for a medium to flow. The device has the effect of achieving medium circulation.

The present invention relates to an air outlet device and an air disinfector. The air outlet device comprises an air guide tube. The direction of the air inlet of the air guide tube is not parallel to the direction of the air outlet. An air outlet grille is provided at the air outlet of the air guide tube. The air outlet grille comprises a plurality of air guide strips. The plurality of air guide strips are arranged at intervals along the circumference of the air outlet grille. One end of the plurality of air guide strips are gathered in the middle of the air outlet grille, and the other end is distributed in the outer extension of the air outlet grille. The air outlet grille comprises at least two air guide areas. Each air guide strip in one air guide area is inclined clockwise relative to the forward projection surface of the air outlet grille, and each air guide strip in another air guide area is inclined counterclockwise relative to the projection surface. Thus, the airflow blown out from the air outlet grille is more concentrated and has a higher flow rate. When it is applied to an air disinfector, the airflow can be blown farther, accelerating the indoor air circulation, thereby improving the sterilization and disinfection effect.

The utility model discloses a large-caliber internet of things remote water meter which comprises a water meter body. The fixing mechanism comprises a liquid inlet pipe fixedly connected to the outer wall of one side of the lower end of the water meter and a liquid outlet pipe fixedly connected to the outer wall of the other side of the lower end of the water meter; the anti-blocking mechanism comprises an outer gear ring, a gear is meshed with the outer wall of the circumference of the outer gear ring, cleaning frames are rotatably connected to the outer walls of the two sides of the outer gear ring at equal intervals around the circumference, a mounting groove is formed in the inner wall of the fixing frame, the outer gear ring is rotatably connected to the inner wall of the mounting groove, and corresponding grooves are formed in the outer walls of the fixing frame and the mounting frame. The outer wall of the corresponding groove is fixedly connected with a protection frame, the outer wall of one side of the protection frame is hinged to a movable door, and the gear is rotationally connected to the inner wall of the protection frame. The problems that during use, impurities doped in conveyed water flow are likely to adhere to the connecting position of a water pipe and a water meter, conveying of the water flow is affected, and generally after the water pipe is detached from the water meter, the connecting position is manually cleaned, and cleaning is strenuous are solved.

The utility model discloses a fuel gas change-over valve which comprises a valve seat, an electromagnetic valve cover and an electromagnetic valve push rod, a public gas inlet channel, a natural gas inlet channel, a gas outlet channel and a center cavity are formed in the valve seat, and the public gas inlet channel, the natural gas inlet channel, the gas outlet channel and the center cavity are communicated. The electromagnetic valve push rod is connected to the electromagnetic valve cover in a sliding mode and can slide in the natural gas inlet channel, and a channel between the natural gas inlet channel and the center cavity is opened and closed through the electromagnetic valve push rod. The change-over valve has the advantages that the natural gas pipe and the liquefied petroleum gas pipe can conveniently enter the change-over valve through the public gas inlet channel, the natural gas pipe and the liquefied petroleum gas pipe can be conveniently arranged at the same end of the change-over valve side by side, it is guaranteed that pipelines are arranged in order, and installation and layout of parts in a cabin are not affected.

The present invention discloses an experimental device for simulating deep-sea mining multi-condition plumes, including a transparent experimental water pool, a circulating water pool, a sediment material pool, a camera group and a server; the circulating water pool is connected to the experimental water pool and the sediment material pool respectively, the experimental water pool is used for water recycling and flow rate control in the non-static water experiment process, and the sediment material pool is used to pump sediments with a certain flow rate and turbidity into the circulating water pool; the camera group is arranged on the outer circumference of the circulating water pool; the camera group is connected to the server, and the server is connected to the display; a replaceable flexible nozzle and a telescopic turbidity meter are arranged in the experimental water pool. The present invention adopts a modular design, and different equipment combinations can be selected to realize indoor experimental flexible simulation of plumes stirred up by seabed mining in deep-sea mining and plumes returned by sediments, and can carry out deep-sea mining multi-condition and multi-parameter adjustable design experiments; a water flow regulator is arranged to actively and autonomously regulate the inflow of water, which greatly reduces the experimental error.

The utility model relates to the technical field of heat exchangers, in particular to an efficient heat exchanger for a compressed air energy storage system. The water inlet is connected with a water inlet heat exchange pipe; the water inlet heat exchange pipe is of an S-shaped structure. An air inlet heat exchange pipe is arranged in the water inlet heat exchange pipe; the air inlet heat exchange pipe is of an S-shaped structure. One end of the air inlet heat exchange pipe is connected with a compressed air inlet; a compressed air inlet flange is arranged at the top of the compressed air inlet; a water outlet is formed in the tail end of the water inlet heat exchange pipe; a water outlet flange is arranged on the water outlet; a compressed air exhaust port is formed in the tail end of the air inlet heat exchange pipe; a compressed air exhaust port flange is arranged on the compressed air exhaust port; a heat exchange cavity A, a heat exchange cavity B and a heat exchange cavity C are formed between the water inlet heat exchange pipe and the air inlet heat exchange pipe respectively. The problems that a traditional heat exchanger is low in heat exchange rate and long in heat exchange time are solved.

The invention relates to the technical field of casting, in particular to a lower support vertical parting casting method which comprises a lower support and a pouring system, the pouring system is located above the lower support, an inner pouring gate is arranged at the upper end of a bottom plate of the lower support, and the pouring system comprises a pouring cup, a transverse pouring gate and a dead head. The dead heads comprise a left dead head and a right dead head, the left dead head is connected with the flow gate and is close to one side of the cross gate, the side part of the right dead head protrudes out of the side part of the left dead head, and the cross gate is connected with the left dead head and the right dead head. Through the arrangement of the pouring system and the risers in the pouring system, the flow velocity and flow state of molten metal during pouring are guaranteed, mold filling is guaranteed, and meanwhile, the static pressure of the molten metal can be increased, so that in the cooling and feeding process, the flow velocity of the molten metal is increased, the flow state of the molten metal is guaranteed, and the feeding effect of the molten metal in the risers on the lower support is guaranteed; and the problems of shrinkage porosity and the like of castings are avoided.

The utility model belongs to the technical field of flame guns, and particularly relates to a flame gun head which comprises a gun body and a preheating piece, one end of the gun body is provided with a connecting portion used for being connected with an air source, and the other end of the gun body is provided with a gun barrel. The preheating part is connected to the side, close to the gun barrel, of the gun body and comprises a flow guide pipe, and the flow guide pipe is used for enabling fuel fluid entering the gun body to surround the inner wall of the gun head by a circle and then enter the gun barrel; according to the design, fuel fluid is guided into the gun barrel after being subjected to heat transfer at the gun head to eliminate tiny liquid beads, potential safety hazards caused by the fact that the tiny liquid beads enter the gun barrel are effectively avoided, the flow guide pipe surrounds the inner wall of the gun head by a circle, the heat transfer effect on the fuel fluid can be improved, and it is guaranteed that the tiny liquid beads possibly existing in airflow are vaporized; and the use safety and reliability of the flame gun are improved.

The utility model relates to an injection water multi-use point cooling device which comprises a main pipe used for circulating injection water, a chilled water supply pipe, a chilled water return pipe and a heat exchange pipe, a cooling passage and a heat exchange passage are arranged in the heat exchange pipe, the cooling passage is arranged between the chilled water supply pipe and the chilled water return pipe in a communicating mode, and the heat exchange passage is communicated with the chilled water supply pipe. An inlet of the heat exchange channel is arranged on the main pipe in a communicating mode, a first branch pipe stop valve is arranged between the inlet of the heat exchange channel and the main pipe in a communicating mode, a second branch pipe is arranged on an outlet of the heat exchange channel in a communicating mode, a first water using pipe is arranged on the second branch pipe in a communicating mode, and a first water using stop valve is arranged on the first water using pipe. A fourth branch pipe stop valve is further arranged on the second branch pipe, and the end, away from the second branch pipe, of the fourth branch pipe stop valve communicates with the main pipe. The method has the effects of reducing energy loss and improving economic benefits.

The utility model relates to the technical field of rudders, in particular to a well type installation symmetrical propeller which comprises a propeller base, a driving cabin is fixedly installed at the lower end of the propeller base, propeller cabins are symmetrically and fixedly installed on the left side and the right side of the propeller base, a water inlet ring opening is formed between the propeller cabins, and propeller sets are arranged in the middles in the propeller cabins. The propeller sets are arranged on the two sides of the driving cabin. When in use, the sectional area of the channel is reduced through the arc-shaped ring piece, so that the flowing speed for driving water inlet is accelerated, high-pressure water inlet is carried out in cooperation with the water inlet hole and the water inlet ring opening, and then the propelling driving force is increased.

The utility model discloses a filtering and locking integrated valve, and relates to the field of valves. A filtering and locking integrated valve comprises a valve body and further comprises a filtering shell installed at the water inlet end of the valve body, and the filtering shell is detachably connected with the valve body through threads; the supporting rods are symmetrically and fixedly connected into the filtering shell; impurities in water can be intercepted and filtered out, the situation that a valve element in the valve body is blocked by the impurities and normal opening and closing are affected is avoided, the filter plate can be driven to rotate through impact of water flow, and therefore the impurities attached to the filter plate leave the filter plate under the action of centrifugal force, the flowing speed of the water flow is guaranteed, and the service life of the valve is prolonged. And meanwhile, the cleaning frequency of the filter plate can be reduced, and the workload of workers for cleaning the filter plate is reduced.

The utility model relates to the technical field of electronic special gas, in particular to an electrolytic bath for preparing nitrogen trifluoride, which comprises an electrolytic bath, a cathode plate support rib is mounted in the electrolytic bath, a plurality of cathode plates are mounted on the inner wall of the cathode plate support rib at equal intervals, a horizontal grating is mounted on the inner wall of the front end of an ionic membrane, and a plurality of cathode plates are mounted on the inner wall of the front end of the ionic membrane. An overflow groove is formed in the upper portion of the inner wall of the electrolytic bath, and overflow observation openings are formed in the two sides of the overflow groove. Through cooperation of the anode plate, the electrolytic bath, the cathode plate, the ionic membrane and the inclined grating, the cathode assembly and the anode plate are completely immersed and suspended in electrolyte, laminar flow of the electrolyte is guaranteed through the horizontal grating at the front end of the ionic membrane, gas entrained in flowing of the electrolyte is isolated, and the stability of the electrolyte is improved. Meanwhile, the precipitation direction of solid impurities in the electrolysis process is controlled, so that the internal structure of the electrolytic bath for producing nitrogen trifluoride through the molten salt electrolysis method is effectively improved, and efficient nitrogen trifluoride production and product purity are achieved.

The invention discloses a device and method for continuously treating waste gas from a pharmaceutical intermediate synthesis process, and relates to the technical field of waste gas treatment. In the invention, a spray component is arranged inside a supporting shell, a liquid inlet end of the spray component is connected to an absorption liquid supply pipe, a plurality of spray adsorption chambers and a piston pressurizing chamber, so that the waste gas flows in an adsorption box and undergoes corresponding absorption treatment; when the flow rate of the waste gas in the adsorption box is reduced and the air pressure is insufficient, resulting in the waste gas in the air guide area not being easy to enter the spray adsorption chamber on the downstream side, the distance state of the second piston is changed by a distance sensor, and a telescopic device is correspondingly controlled to drive the first piston and the second piston to move, so as to achieve a pressurizing effect in the air guide area, thereby efficiently pressing the waste gas into the spray adsorption chamber on the downstream side, assisting the waste gas in the spray adsorption chamber on the downstream side to smoothly pass through the adsorbent filling area, thereby ensuring the flow rate of the waste gas in the multi-stage adsorbent filling area in the adsorption box, and improving the waste gas treatment efficiency.

The utility model discloses a rainproof and dustproof cloud broadcast distribution box, and relates to the technical field of cloud broadcast. The power distribution box comprises a power distribution box main body and a waterproof protective shell, a mounting plate is welded and fixed in the power distribution box main body, a heat dissipation fan is clamped and fixed in the power distribution box main body, a filter element is clamped at the bottom of the heat dissipation fan, a scraper is sleeved on the peripheral surface of the filter element, and the waterproof protective shell is clamped at the top of the outer side of the power distribution box main body in a sliding manner. By arranging the distribution box main body and the waterproof protection shell, the problems that the sealing cover of the distribution box is usually located on the side face of the distribution box and is sealed through a rubber ring, rainwater is prone to being accumulated in a gap between the sealing cover and the distribution box, the rubber ring and the distribution box shell are corroded, and long-time use causes damage to the sealing cover and the waterproof protection shell are solved. The problems that a rubber ring is abraded, aged and the like, a heat dissipation ventilation opening of the distribution box is small in size, the air velocity and the heat dissipation efficiency are affected, and a filter screen is easily blocked by external dust are solved.

A winding pipe type heat exchanger for reforming equipment comprises a vertically-arranged shell pass barrel, a gas phase inlet connecting pipe and a liquid phase inlet connecting pipe are arranged on the side wall of the lower portion of the shell pass barrel, and a lower pipe plate is arranged at the bottom of the shell pass barrel; the heat exchange tubes are vertically arranged in the shell pass barrel and spirally wound into a multi-layer spiral tube from inside to outside, and the lower end of each heat exchange tube is supported on the lower tube plate; the guide cylinder is vertically arranged in the lower space of the shell pass cylinder and sleeves the periphery of the outermost layer of spiral pipe, an annular cavity with the gas phase inlet connecting pipe is formed between the cylinder wall of the guide cylinder and the corresponding side wall of the shell pass cylinder, and the annular cavity is communicated with the inner space of the guide cylinder through a communication port arranged in the circumferential direction; the annular spraying pipe is arranged in the inner space of the guide cylinder in the circumferential direction, the spraying pipe is communicated with the liquid phase inlet connecting pipe, a plurality of spraying holes are formed in the spraying pipe in the circumferential direction at intervals, and the spraying holes are located above the communicating port.

The invention discloses a ventilation method and an agricultural ventilation system, which belong to the field of ventilation equipment. A ventilation method comprises the following steps: S1. Splicing: selecting a corresponding number of air supply sections and air inlet structures according to the size of a site, splicing the air supply sections in sequence to form an air supply duct and connecting it to the air inlet structure; S2. Hoisting: hoisting the air supply duct and the air inlet structure above the site after the splicing is completed through the lifting rings on the air supply sections for hanging; S3. Adjusting: adjusting the opening size of the air valve in the outlet of the air supply section in sequence along the moving direction of the air flow in the air supply duct until the air flow rates of multiple air outlet pipes on the air supply duct are the same; S4. Locking: locking the position of the air valve after the adjustment is completed to keep the air output of the multiple air outlet pipes stable, and the air supply ducts can be assembled and used according to actual conditions, and the later modification is easy, and the air output is uniform to meet the needs of plant and animal growth.