40results about How to "No channeling" patented technology

The invention relates to a mechanical dispersion fluidization drying method and equipment for coal slime. The method is used for realizing fluidization drying of coal slime particulates by using hot smoke while dispersing coal slime to be dried into the coal slime particulates. The drying method is high in heat utilization rate and yield as well as wide in application range. The equipment comprises a drying box body and a stirring shaft, wherein the drying box body is provided with a feeding hole, a discharging hole, a gas outlet and a smoke inlet; the stirring shaft is used for dispersing the coal slime to be dried, is arranged at the bottom of the drying box body and is located above the smoke inlet; the coal slime to be dried is dispersed into the coal slime particulates by using the stirring shaft after entering the drying box body through the feeing hole, meanwhile, the hot smoke enters from the smoke inlet at the bottom of the drying box body at a proper flow rate and is discharged from the gas outlet after carrying out fluidization drying on the coal slime particulates, and at the same time, the dried coal slime is output from the discharging hole. The equipment is large in gas and solid drying contact area, long in drying time, high in heat utilization rate and yield and small in floor area.

The invention discloses a ferrous sulfide gas phase passivation device. The gas phase passivation device contains a steam supply part, an oxygen supply part and a sealing part. The gas phase passivation device is connected with a tail gas treatment device and a data analysis device respectively to perform gas phase passivation to a petrochemical device. The steam supply part contains a water softener, a steam generator, a steam flowmeter and an oxygen valve. The oxygen supply part contains a compressed oxygenized air bottle, a gas flowmeter, an oxygen inlet valve and an oxygen valve. The sealing part contains a packed tower, a tail gas valve and a gathering tank valve. Compared with the liquid phase passivation method in the prior art, the phase passivation method of the invention mainly uses oxygenized air, is convenient to use and has lower cost. Waste gas is easy to treat. The waste gas which is easily treated through gas phase passivation can meet the emission standard. The treatment time is short; and passivation can be performed evenly and the channeling phenomenon does not exist.

The invention discloses a ferrous sulfide gas-phase passivation method, comprising the steps of monitoring, feeding air, passivating, sealing and discharging, wherein the passivating is implemented as follows: vapor carrying oxygen enriched air enter a container for carrying out gas phase passivation on ferrous sulfide. The vapor is water vapor, the pressure of the water vapor is 0.1-0.9 MPa, and the oxygen enriched air contains 21-50 percent of oxygen by volume. Compared with the ferrous sulfide liquid-phase passivation method, the ferrous sulfide gas-phase passivation method has low cost, is easy to implement, mainly adopts oxygen enriched air which is convenient to use and has low cost for gas phase passivation, ensures uniform ferrous sulfide passivation, is free from channeling phenomenon and dead corners due to gas-phase action and boasts of easy treatment of waste gas which is produced in ferrous sulfide gas-phase passivation and can reach the emission standard after being treated simply, and has short treatment time.

The invention discloses a shell tube heat exchanger, comprising a shell tube and axial end covers at two ends of the shell tube. A plurality of bundles which are axially parallel with the shell tube and tube plates connected with two ends of the bundles are arranged in an internal part of the shell tube. A tube-side inlet and a tube side outlet are arranged at the end covers. A shell side inlet and a shell side outlet are arranged on the shell. Each component of the shell tube heat exchanger is made of the same material. A welding process of the shell tube heat exchanger is that firstly points of each component to be welded are covered by solders; secondly positions are fixed well for a whole vacuum brazing. The invention is formed by components which are made of the same material and are brazed into a whole, with an excellent airproof capability and a light weight. And a heat expansion coefficient of each part is the same, then the invention can be against a low temperature and the capability of the shell tube heat exchanger is enhanced and the service life of the shell tube heat exchanger is prolonged.

The invention discloses an automatic dust removal dust collector, which comprises universal wheels, directional wheels, a cart bracket, a fan, a fan air outlet tube, an AC traction electromagnet, an external dust collection pipeline, a dust collection barrel and fan connecting pipeline, a fan blow-back acting pipe, a fan blow-back acting pipe one-way valve, an air outlet silencing pipe, an air outlet silencing pipe one-way valve, a hand push rod, a fan airflow reversing mechanism, an electric appliance switch box, a three-phase current aviation plug, a box body, a dust collection barrel and a fan air inlet pipe. According to the dust collector provided by the invention, on the basis of the principle of airflow reverse circulation which is caused through back-blowing by virtue of the fan, a purpose of automatically cleaning a filter can be achieved; the dust collector is compact in structural design and convenient, and the dust collector, which is not externally connected to a blow-back filter element cleaning mechanism, is low in cost; by arranging the air outlet silencing pipe, noise, which is generated from the dust collector during working, can be reduced, and the dust collector is conducive to protection of a working environment; and by arranging the one-way valves, crossed airflow is prevented when the dust collector works under two states, so that stable working states are guaranteed.

The invention discloses a gas phase deactivation method for a petrochemical device. The method comprises the following steps of: sequentially opening a tail gas valve, an exhaust valve, a monitoring air inlet valve and a monitoring air outlet valve, and then starting an online gas chromatograph to monitor the concentration of SO2, wherein the SO2 content of the tail gas is high when the gas phasedeactivation process starts, and the volume concentration of the SO2 is reduced to 0.001-0.09 percent after 7 to 19 hours; and finishing the tower reaction when the volume concentration of the SO2 isnot changed in 30 to 60 minutes, finishing the gas phase deactivation, and resetting the valves. Compared with the deactivation method in the prior art, the method has the advantages that: the treatment of waste gas is easy; the gas phase deactivated waste gas can reach discharge standards by simple treatment; the treatment time is short; the cost is low, and the implementation is simple; oxygen rich air is mainly used in the gas phase deactivation, is convenient to use and has low cost; and because of gas phase action, channeling and dead angles are not caused.

Provided are a self-bonded macromolecular composite waterproof roll with a large waste rubber powder doping amount and a preparation method thereof. The self-bonded macromolecular composite waterproof roll is composed of an upper surface micro-crosslinking thermoplastic elastomer layer, an upper middle waste vulcanized rubber powder resin layer, a lower middle hot melting pressure-sensitive rubber layer and a bottom face isolating layer. The overall thickness ranges from 1.2 mm to 2.0 mm, the thickness of the micro-crosslinking thermoplastic elastomer layer accounts for 17% to 35% of the total thickness, the thickness of the hot melting pressure-sensitive rubber layer is 0.35 mm, the thickness of the isolating layer is 0.15 mm, and the rest is the waste vulcanized rubber powder resin layer. The self-bonded macromolecular composite waterproof roll is free of plasticizer, has high durability, high mechanical performance and prominent low-temperature flexibility, and meanwhile has the advantages of being excellent in waterproofness, thermal weldability and yellowing resistance, long in service life, convenient to construct and the like.

A liquid cool system of distributed server is disclosed and includes at least one cabinet and a heat exchanger core, a first refrigerant driving pump and a first refrigerant filter are arranged between the first refrigerant outlet of the heat exchange machine core and the liquid inlet of the cabinet, the liquid inlet and the liquid outlet of each of the first refrigerant driving pumps are respectively provided with a first refrigerant butterfly valve, and the liquid inlet and the liquid outlet of each of the first refrigerant filters are respectively provided with a first refrigerant butterflyvalve; The cabinet is provided with a baffle plate and a return mechanism which divide the first refrigerant liquid level into at least two independent regions, each independent region is communicated with a return liquid inlet on the return mechanism, and the return liquid outlet of the return mechanism is communicated with the liquid outlet of the cabinet. As that heat exchange movement is horizontally arranged along the minimum height thereof, the pipeline is smoothly arrange and the pipeline resistance is reduced; At that same time, the liquid level is divide into at least two independentareas to avoid liquid level channeling, and the heat-absorbing first refrigerant can be quickly return to the heat exchange core through the reflux mechanism, and the heat dissipation efficiency is high.

The invention discloses a method for forming a liquid cavity through adding of a multi-part middle spacing sleeve. Firstly, the multi-part middle spacing sleeve is additionally arranged between a mandrel and an outer sleeve; then, the multi-part middle spacing sleeve is hollowed to form multiple space; the multi-park middle spacing sleeve and the mandrel are bonded through rubber vulcanization; and multiple independent liquid cavities are formed by using rubber and the multi-part middle spacing sleeve. The method can provide lower radial rigidity and higher axial rigidity to realize a higher dynamic-static ratio to optimize the product performances of liquid rubber compound nodes.

The invention provides an air conditioner which comprises a heat exchanger body, a plurality of draught fans, a flow guiding structure and an air duct shielding mechanism, wherein the draught fans arearranged in sequence; the flow guiding structure is arranged between the heat exchanger body and the draught fans; air ducts which correspond to the draught fans in a one-to-one manner are arranged at the end, close to the draught fans, of the flow guiding structure; and shielding parts of the air duct shielding mechanism can enter at least on air duct so as to cut off the communication between the heat exchanger body and the corresponding draught fan. By adoption of the air conditioner provided by the invention, the problem that a conventional air conditioner is relatively low in heat exchange efficiency and heat exchange capacity can be effectively solved.

The invention discloses a gas-phase passivation system for a petrochemical device. The gas-phase passivation system comprises a gas-phase passivation device, a tail gas treatment device and a data analysis device, wherein the tail gas treatment device is connected with the gas-phase passivation device and is used for treating harmful gases generated in a passivation process; the tail gas treatment device further comprises a lye tank in which 10 percent sodium hydroxide solution is accommodated, a tail gas valve and an exhausting valve; the data analysis device is connected with the gas-phase passivation device and is used for detecting data of combustible gases before gas-phase passivation and linearly detecting the concentration of sulfur dioxide (SO2) generated by passivation in a gas-phase passivation process; and the data analysis device further comprises a gas drying apparatus, a gas chromatograph, a metering machine, an air inlet monitoring valve and an air outlet monitoring valve. By the passivation system, waste gases are easy to treat, and the waste gases generated by gas-phase passivation can meet the discharge standard after being treated simply.

The invention provides a filter element device with a water stop assembly. The filter element device comprises a shell, a filter material and the water stop assembly. The filter material is arranged in a filter cavity of the shell to form a filter flow channel; the water stop assembly is mounted in the filter cavity, a water blocking part of the water stop assembly is connected to a water distributor through a rotating shaft structure, the water distributor is provided with a water distributor butt-joint opening, the water blocking part is provided with a water blocking part butt-joint opening, and the water blocking part and the water distributor rotate relatively to control the water distributor butt-joint opening and the water blocking part butt-joint opening to be connected in a butt-joint mode or staggered. Based on the structure, the water stop assembly can prevent residual water in the filter cavity to flow out in the dismounting process of the filter element device; in addition, the mode of side-face water passing or blocking is adopted by the water stop assembly, so that the assembling structure is simplified, smoothness of relative rotation of the water distributor and the water blocking part is improved, the setback feel during rotation is lowered, and good control hand feel is achieved. The invention further provides a water purifier comprising the filter element device. The filter element device has the advantages of non water leakage, non water crossing, convenient filter element replacement and the like.

The invention provides a method for assessing the passivation effect of iron sulfides. A gas supply apparatus comprises an inert gas bottle, an oxygen-rich air bottle, a steam generator and a hydrogen sulfide bottle, the gas supply apparatus is connected with a passivation apparatus through respective pipelines, and supplies a gas to the passivation apparatus, a sample is disposed on the tray of the passivation apparatus, direct sulfuration of the sample can be realized when a hydrogen sulfide gas is introduced into the passivation apparatus, and the iron sulfides are prepared through a reaction of hydrogen sulfide and iron oxide, have high activity, and are close to the condition activity. Safe operation boundary parameters capable of realizing good passivation effect, obvious economic benefit and safe and reliable operation can be found through changing of the concentaration and amount of oxygen introduced in the passivation process and through comparison of a large amount of experiments in order to find the rapid passivation reaction conditions of the iron sulfides in water steam and oxygen, so safety guarantee is provided for maintenance of a tower, a tank and a kettle in an industrial apparatus.

The invention relates to the technical field of waterproof projects, in particular to a tube root waterproof structure and a construction process thereof. The tube root waterproof structure is compounded and matched with a tire body through a special rubber state waterproof coating to form the tube root waterproof structure, so that the tube root waterproof structure not only has the advantages ofa waterproof roll, but also has the advantages of a waterproof coating material. A continuous, intact and flawless waterproof layer with an excellent waterproof function can be formed on a base surface, and the layers form an organic whole, so that the structure is good in consistence. The structure fully exerts the characteristics that the used rubber state waterproof coating is quickly dried, is dried from inside to outside and does not flow, so that the waterproof structure can be continuously constructed on the basis of keeping the enough waterproof coating thickness, and a long time forwaiting is not needed. The finally obtained waterproof structure is firmly adhered to the base surface, and the waterproof layer is uniform and high in integral degree, does not separate, and is highin tensile strength.

The invention discloses a method of forming liquid cavities by additionally arranging a four-pedal intermediate spacer bush and cavity structures. The method comprises the following steps: first, additionally arranging the four-pedal intermediate spacer bush between a mandrel and an outer sleeve; then hollowing the four-pedal intermediate spacer bush to form a plurality of spaces; then bonding thefour-pedal intermediate spacer bush and the mandrel together by rubber vulcanization; and forming independent liquid cavities by means of rubber and the four-pedal intermediate spacer bush. Accordingto the method, relatively small radial rigidity and relatively large axial rigidity can be provided, and meanwhile, a relatively large dynamic-static ratio is achieved, so that the product performance of a liquid rubber compound node is optimized.

The invention discloses a synchronous nitrification and denitrification filter tank, which comprises a tank. The top of a filter material bed is positioned below the liquid level in the tank. A water inlet system is provided with a Venturi ejector. A sand washing system comprises several sand washers. At least part of the sand washer extends to below the liquid level in the tank and is positioned above the filter material bed. A gas stripping system is arranged outside the tank. Upper and lower ends of the gas stripping system are respectively communicated with the sand washing system and the bottom of the tank. After entering the filter material bed, sewage undergoes denitrification, nitrification and filtration. A filter material continuously moves down to the bottom of the tank during the sewage treatment process and then rises to the sand washing system to be cleaned; and then, the filter material drops down to the top of the filter material bed and then moves down in the tank to treat sewage. Thus, cyclic regeneration of the filter material and continuous treatment of sewage are realized. The synchronous nitrification and denitrification filter tank has advantages of low manufacture cost and good effluent quality, and is convenient to repair and maintain.

The invention relates to the technical field of waterproof engineering, in particular to an internal corner waterproof construction and a construction technology thereof. The internal corner waterproof construction is formed with a tire body by adopting a special rubber state waterproof coating, the internal corner waterproof construction has the advantages of a waterproof rolling material and a waterproof coating film material, a continuous, complete, defect-free waterproof layer with an excellent waterproof function can be formed on a base plane, an organic whole is formed, good consistencyis achieved, and any leakage and moving are avoided. The internal corner waterproof construction and the construction technology thereof give full play to the characteristics of quick drying, drying rubber from inside to outside and not flowing of the waterproof coating, so that the waterproof construction can be constructed continuously on the basis of maintaining sufficient thickness of waterproof coating without waiting for too long; and finally, the obtained waterproof construction is firmly bonded to the base plane, the waterproof layer is even, integration degree is high, no delaminatingis achieved, and the tensile strength is high.

The invention discloses a method for forming a liquid cavity through additionally arranging an integral type middle spacer sleeve. The method comprises the steps of firstly additionally arranging theintegral type middle spacer sleeve between a spindle and an outer sleeve, then caverning out the integral type middle spacer sleeve so as to form multiple spaces, adhering the integral type middle spacer sleeve and the spindle through rubber vulcanization, and utilizing rubber and the integral type middle spacer sleeve to form multiple liquid cavities independent mutually. According to the methodfor forming the liquid cavity through additionally arranging the integral type middle spacer sleeve provided by the invention, smaller radial rigidity and larger axial rigidity can be provided, and meanwhile, larger dynamic-static ratio is realized, so that the product performance of a liquid rubber compound node is optimized.

The invention discloses a motor base. The motor base comprises a base body; first heat dissipation sheets and second heat dissipation sheets are uniformly distributed in the circumferential directionof the outer wall of the base body; the first heat dissipation sheets are positioned in the middle of the outer wall of the base body; both front and rear sides of the first heat dissipation sheets are each provided with the second heat dissipation sheets; the outer ends of the second heat dissipation sheets are coated through an upper cover plate and a lower cover plate; the upper cover plate andthe lower cover plate are semicircular structures; an upper sealing gasket abutting the outer end face of the second heat dissipation sheets is arranged on the inner wall of the upper cover plate ina fitting manner; a lower sealing gasket abutting the outer end face of the second heat dissipation sheets is arranged on the inner wall of the lower cover plate in a fitting manner; the outer end faces of the upper cover plate and the lower cover plate are spirally screwed into the top of the outer wall at the outer end of the base body, and tightly compressed; a second heat dissipation sheet positioned in the centre of the top is closed; other second heat dissipation sheets are each provided with a medium flow through hole; a medium inlet pipe and a medium outlet pipe are arranged on the topof the upper cover plate; and the medium inlet pipe and the medium outlet pipe are separately positioned at two sides of the second closed heat dissipation sheet. The motor base disclosed by the invention is good in cooling effect and convenient to clean.

The invention discloses a gas-phase passivation system for a petrochemical device. The gas-phase passivation system comprises a gas-phase passivation device, a tail gas treatment device and a data analysis device, wherein the tail gas treatment device is connected with the gas-phase passivation device and is used for treating harmful gases generated in a passivation process; the tail gas treatment device further comprises a lye tank in which 10 percent sodium hydroxide solution is accommodated, a tail gas valve and an exhausting valve; the data analysis device is connected with the gas-phase passivation device and is used for detecting data of combustible gases before gas-phase passivation and linearly detecting the concentration of sulfur dioxide (SO2) generated by passivation in a gas-phase passivation process; and the data analysis device further comprises a gas drying apparatus, a gas chromatograph, a metering machine, an air inlet monitoring valve and an air outlet monitoring valve. By the passivation system, waste gases are easy to treat, and the waste gases generated by gas-phase passivation can meet the discharge standard after being treated simply.

The invention discloses a method for forming a liquid rubber composite node with an inner groove flow channel and the node, wherein the forming method is to add an intermediate spacer between the outer casing and the mandrel, and bond the middle spacer and the mandrel through rubber vulcanization Together, the integrated intermediate spacer and mandrel are assembled into the outer casing; the inner groove flow channel is set in the mandrel, and multiple spaces are hollowed out on the middle spacer. After vulcanization, the rubber and the A plurality of spaces form a plurality of liquid cavities independent of each other, liquid is arranged in the plurality of liquid cavities, and the plurality of liquid cavities are connected through inner groove flow channels. The invention can provide smaller radial rigidity and larger axial rigidity, and realize larger dynamic-static ratio, thereby optimizing the product performance of the liquid rubber composite node.

A storage-type precise quantitative injection system for injection of an underground oil or gas well operating agent and an injection method thereof. The injection system comprises an injection tube (3-2) and overground pressurizing equipment. The injection tube is provided with one or more sets of injection units therein. Each set of the injection units comprises an operating agent container (3-7) having a variable volume. The overground pressurizing equipment is configured to generate a pressure acting on the operating agent container (3-7) having the variable volume so as to expel an operating agent (3-8). The injection method adopts the storage-type precise quantitative injection system using the underground oil or gas well operating agent (3-8), and injects a fixed amount of the operating agent (3-8) into a target location in the underground well. By injecting in advance the fixed amount of the operating agent into the operating agent container, the injection system can inject an accurate and fixed amount of the operating agent and ensure accuracy of an injection amount of the operating agent. The injection method can inject an accurate amount of the operating agent into the target location, providing accuracy of the injection amount and accuracy of the injection location and ensuring a favorable injection effect.

The invention relates to a vibration fluidized bed comprising a bed body and a vibration excitation device, wherein the vibration excitation device comprises a front side plate and a rear side plate which are arranged on the front side and the rear side of the bed body separately; an upper eccentric shaft and a lower eccentric shaft which are located under the bed body are rotationally arranged between the front side plate and the rear side plate, and the upper eccentric shaft is located above the lower eccentric shaft; a motor in transmission fit with the rear end of the upper eccentric shaft is arranged on the rear side plate, and the front end of the upper eccentric shaft is in transmission fit with the lower eccentric shaft through a gear; and the transmission ratio of gear transmission is 1. The bed body of the vibration fluidized bed can be uniformly vibrated to push materials, and does not generate resonance phenomenon.

The invention relates to a ferrous sulfide gas phase passivation method, which mainly solves the problems of high passivation cost, uneven passivation, long passivation time, and complicated operation in the prior art. The ferrous sulfide gas phase passivation method involved in the invention comprises the steps of: (1) conveying a ferrous sulfide suspension into a passivation tower, discharging the fluid from the passivation tower, and removing water from ferrous sulfide; (2) in a water vapor environment, introducing oxygen-enriched air into the passivation tower and passivating ferrous sulfide; (3) dividing the gas discharged from the passivation tower into at least two ways, making one way of the discharged gas enter sulfur dioxide and hydrogen sulfide content detection equipment after condensation and drying, and making the other way of the discharged gas enter an alkali liquor absorption pot; and (4) analyzing the ferrous sulfide content before and after passivation, the concentration of sulfate ions in the passivated condensate, and the content of sulfur dioxide and hydrogen sulfide in tail gas. The technical scheme well solves the problems and can be used in ferrous sulfide gas phase passivation.

The embodiment of the invention provides a display back plate, a preparation method thereof and a display device. The display back plate comprises a lining plate; a source electrode layer arranged onthe lining plate; a first passivation layer arranged on the source electrode layer; a drain electrode layer arranged on the first passivation layer, wherein first grooves are formed in the source electrode layer, the first passivation layer and the drain electrode layer; and the width of the opening of each first groove is larger than that of the bottom of the first groove; and a semiconductor layer which is arranged on the inner wall of each first groove. In the embodiment of the invention, the source electrode layer and the drain electrode layer are arranged on different layers, the first grooves are formed, and the semiconductor layer is arranged on the inner wall of the first grooves and is connected with the source electrode layer and the drain electrode layer, so that the length of the semiconductor layer between the source electrode layer and the drain electrode layer can be ensured to meet the condition that a channel effect does not occur; the aperture opening ratio of the display device can be improved, and then the pixel of the display device is improved.

The invention provides a mask type ion net filtering system. The mask type ion net filtering system comprises conductive filtering cotton arranged in a triangular area of a mask shell, an airflow guide wing arranged on an airflow guide wing mounting part, side wing electrode assemblies arranged on two side wings of the airflow guide wing and matched with the conductive filtering cotton, and an ion generating electrode arranged on an upper shell of the airflow guide wing, wherein the conductive filter cotton is distributed around the airflow guide wing; a wing plate of the airflow guide wing is provided with a plurality of airflow guide wing holes serving as an airflow guide inlet and tip electrode working ports at the side wing electrode assemblies; the ion net filtering system is connected to a high-voltage plate and control panel module; and the high-voltage plate and control panel module is connected to a power supply module. The system has low breathing resistance on the premise of meeting a high-grade protection requirement, and the conductive filter cotton can achieve the air treatment effect of ionization sterilization through cooperation with the side wing electrode assemblies due to the fact that the conductive filter cotton has the conductivity while exerting traditional filtering effect.

A liquid cool system of distributed server is disclosed and includes at least one cabinet and a heat exchanger core, a first refrigerant driving pump and a first refrigerant filter are arranged between the first refrigerant outlet of the heat exchange machine core and the liquid inlet of the cabinet, the liquid inlet and the liquid outlet of each of the first refrigerant driving pumps are respectively provided with a first refrigerant butterfly valve, and the liquid inlet and the liquid outlet of each of the first refrigerant filters are respectively provided with a first refrigerant butterflyvalve; The cabinet is provided with a baffle plate and a return mechanism which divide the first refrigerant liquid level into at least two independent regions, each independent region is communicated with a return liquid inlet on the return mechanism, and the return liquid outlet of the return mechanism is communicated with the liquid outlet of the cabinet. As that heat exchange movement is horizontally arranged along the minimum height thereof, the pipeline is smoothly arrange and the pipeline resistance is reduced; At that same time, the liquid level is divide into at least two independentareas to avoid liquid level channeling, and the heat-absorbing first refrigerant can be quickly return to the heat exchange core through the reflux mechanism, and the heat dissipation efficiency is high.

The invention provides a filter element water-stop assembly. The filter element water-stop assembly comprises a water distribution part and a water stop part, the water distribution part is provided with a water distribution flowing channel, the water stop part is provided with a water stop flowing channel, the water distribution part is provided with a water distribution part butt-joint opening,and the water stop part is provided with a water stop part butt-joint opening; and the water stop part is connected with the water distribution part through a rotating shaft structure, and the water stop part and the water distribution part control butt joint and staggering of the water distribution part butt-joint opening and the water stop part butt-joint opening through relative rotation so asto realize communicating and disconnection of the water distribution flowing channel and the water stop flowing channel. Based on the structure, the water-stop assembly adopts the side water connecting and disconnecting mode, thus an assembling structure is simplified, the smooth degree during relative rotating of the water distribution part and the water stop part is improved, the abrupt feelingduring rotating is lowered, and the good control hand feeling is achieved. In addition, the invention further provides a filter element device comprising the water-stop assembly, and a water purifier.The filter element device has the advantages that the rotating smooth degree is high, the operation hand feeling is good, and the assembling structure is simplified. The water purifier has the advantages that water leakage is avoided, water channeling is avoided, and a filter element is convenient to replace.