55results about How to "Flow impact" patented technology

The invention discloses a pipeline inner wall coating machine and belongs to the field of pipeline equipment. Travelling wheels are connected to a driving device output shaft. Nozzles are at least arranged on the coating machine and are evenly distributed on the periphery of the inner wall of a pipeline. A jackhammer, an illuminating device and a camera device are arranged on the upper portion of the front portion of the pipeline. An automatic take-up wheel is arranged behind the pipeline. A coaxial compression air pipe roller is arranged beside the take-up wheel. A steel wire rope traction hole is further formed in the rear portion of the coating machine. The nozzles and the jackhammer are arranged on rotary plates correspondingly. Through the pipeline inner wall coating machine, obstacles in the pipeline can be cleared, smooth flowing of liquid in the pipeline can be ensured, the labor intensity of painters is relieved, physical discomfort of workers due to the harsh paint environment is avoided, automatic operation is achieved, the paint efficiency is improved, and the health of the workers is ensured.

The invention provides a control device for a passenger transporting apparatus, and a control method thereof, which can reduce the total consumed power of all escalators and suppress the adverse effect on the flow of the passenger using the escalators to be a minimum, in a building, department store, or the like having multiple escalators. The control method of the invention comprises determining the load (consumed power) state of each escalator, and reducing the speed of the escalator with little passengers. Accordingly, when the number of the passengers is in the predetermined heavy duty state, by means of suppressing the speeds of the other escalators, the total consumed power of all escalators is reduced, and the adverse effect on the flow of the passenger using the escalators is controlled to be a minimum.

The invention belongs to the technical field of multistage treatment of sewage, and particularly relates to a multifunctional sewage purification device. The multifunctional sewage purification devicecomprises a stand and a cleaning barrel, wherein a water feeding pipe and a water discharging pipe are arranged on the cleaning barrel; a first valve is arranged on the water feeding pipe; a filter plate is arranged in the cleaning barrel; a piston cylinder is further fixedly arranged on the side wall of the cleaning barrel; a piece of oil filter cloth is arranged at a connection joint of the water discharging pipe and the cleaning barrel; a resistance wire is arranged in the oil filter cloth; a flexible oil discharging pipe is arranged below the oil filter cloth, and is connected with an oiltank; a second valve is arranged on the flexible oil discharging pipe; a first spring is connected between the oil tank and the stand; a first switch, a second switch and a third switch are arrangedon the stand; the oil tank is connected with the oil discharging pipe; a third valve is arranged on the oil discharging pipe; the inner wall of the water discharging pipe is connected with a turbine in a rotatable manner; one side of the turbine is connected with a swing rod in a rotatable manner; the other side of the turbine is connected with a cam. The multifunctional sewage purification devicecan perform multistage treatment on the sewage; furthermore, in a treatment process, blockage of the water feeding pipe by sediment is avoided; the multifunctional sewage purification device is mostly applied to treatment of the sewage.

The present invention belongs to the sewage treating apparatus adopting biochemical technology. The integrated stereo oxidation channel has two rectangular solid-liquid depositing separators, and the oxidation channel is separated with partition board into the upper aerobic area and the lower anaerobic area. Each of the solid-liquid depositing separators has inclined mixed liquid inlet in the bottom, overflow weir and water outlet on one side wall, and sludge reflowing port on the other wall. The two solid-liquid depositing separators are installed separately on two side walls of the stereo circulating oxidation channel. The stereo circulating oxidation channel has bottom isolated from air and this is favorable to forming anaerobic state and raising denitrifying efficiency. Compared with available oxidation channel, the present invention has 50 % reduced covered area.

The invention relates to a fixing structure of a battery module, whereby the battery module is fixedly disposed on a supporting member without hindering the flowing of the refrigerant in the refrigerant pathway of the supporting member. A first end plate (37) disposed on the battery module (16) and the fastening member (44) disposed on the supporting member (28) are fixedly connected together by using the bolt (47). The battery module (16) is fixedly disposed on the supporting member (28), the refrigerant flowing in the refrigerant pathway (28a) in the supporting member (28) can be used to cool the battery module (16). At the same time, the fastening member (44) can be fixedly disposed on the surface of the supporting member (28) in a welded or bonded manner, therefore the fastening member (44) cannot be influenced by the flowing of the refrigerant in the refrigerant pathway (28a) in the supporting member (28), and the cooling performance of the battery module (16) can be guaranteed.

The invention discloses a vacuum adsorption platform which comprises a base, a table piece and multiple regulation pieces; the table piece is provided with a core body; a plurality of through-hole-shaped cells are formed in the core body in a penetrating manner; a plurality of first connecting channels are arranged on the walls of the cells respectively so as to enable adjacent cells to be communicated with each other; a face plate is attached to one side, away from the base, of the core body and closes orifices at one ends of the cells; and a back plate is attached to one side, facing the base, of the core body and closes orifices at the other ends of the cells; a plurality of air holes are formed in the face plate respectively and are communicated with the cells respectively; and the regulation pieces are arranged between the table piece and the base so as to change distances between different portions of the table piece and the base. For the vacuum adsorption platform provided by the invention, a plurality of cells of the honeycomb core body are provided with connecting channels for enabling the cells to be communicated with one another in a radial direction, so that air can flow in each cell, and the phenomenon that when local air flow paths are blocked, the possibility that outward flowing of the air in local cells is influenced is avoided.

The invention discloses an intravascular multilayer bare stent system, and relates to the technical field of medical equipment. According to the technical points, a support body is composed of a firstframework and a second framework, and the first framework and the second framework are of a cylindrical net structure formed by weaving framework lines made of memory alloy or biodegradable polymer materials, overlapped with each other and opposite in spiral rotation direction. Rotary connecting rings are arranged at the upper sections, the middle sections and the lower sections of the first framework and the second framework; metal wires are connected to the inner wall of the rotary connecting ring; a hole-sealing strip-shaped film is connected to the side wall of the metal wire. The mesh sealing of the multilayer bare stent can be adjusted, so that the aneurysm cavity and the interlayer are isolated from normal blood flow, normal blood flow is prevented from leaking into the aneurysm cavity and the interlayer, blood flow in the aneurysm cavity and the interlayer is restrained, blood clots or thrombi are promoted to be formed in the aneurysm cavity and the interlayer to atrophy the aneurysm, the pressure in the aneurysm cavity is reduced, the potential risk that the aneurysm is increased and ruptured is reduced, and stable and guaranteed treatment purpose is achieved.

The invention relates to a heat exchanger (1, 25, 35, 37) comprising a housing (2), with a primary inlet connector (3), a primary outlet connector (4), a secondary inlet connector (5), a secondary outlet connector (6), a primary flow path (7) between the primary inlet connector (3) and the primary outlet connector (4) on a primary side (8), a secondary flow path (9) between the secondary inlet connector (5) and the secondary outlet connector (6) on a secondary side (10), the primary flow path (7) being in heat-transferring connection to the secondary flow path (9). The heat exchanger (1, 25, 35, 37) comprises at least one control auxiliary device, arranged in the primary flow path (7) and the secondary flow path (9).; A constructive improvement to the heat exchanger is desirable which is achieved by means of running the control auxiliary device through a cavity (20), arranged between the primary flow path (7) and the secondary flow path (9).

The invention discloses an extracting tank with a built-in partition plate. The extracting tank is characterized in that the middle part of a tank body is provided with the partition plate for dividing an inner cavity of the tank body into upper and lower parts, downward liquid spraying pipes are distributed on the partition plate along the circumference, and air passing pipes are arranged at the other positions of the partition plate; the inner diameters of the liquid spraying pipes are gradually reduced from an inlet to an outlet, the outlets of the liquid spraying pipes on the same circumference and the clockwise rotation tangential speed along the circumference are obliquely downward in a 45-degree angle, or the outlets of the liquid spraying pipes on the same circumference and the anticlockwise rotation tangential speed along the circumference are obliquely downward in the 45-degree angle, and the outlet directions of the liquid spraying pipes on the adjacent circumferences are opposite; a coil is arranged above the partition plate, is close to the partition plate and is arranged along the inner circumference of the tank boy, and the bottom of the coil is provided with downward spraying holes; and a circulating pump comprises a pump inlet and a pump outlet, the pump inlet is connected with a liquid outlet, and the pump outlet passes through the side wall of the tank body so as to be communicated with the interior of the coil. A turbulence liquid medicine is formed in the extracting tank, the uniformly mixing degree of a liquid medicine and a medicinal material at each part in the tank is promoted, and effective active ingredients in the medicinal material are rapidly fully extracted.

The invention discloses a drilling fluid parameter measuring device and a control method thereof. The measuring device is characterized in that a Marsh funnel is suspended on a gravity sensor througha support member, and the gravity sensor measures the Marsh funnel and the weight parameter of slurry injected into the Marsh funnel and sends the weight parameter to a circuit control board; the ultrasonic sensor is arranged in the circumference of the Marsh funnel, measures slurry liquid level parameters in different periods in the Marsh funnel, and sends the measured liquid level parameters tothe circuit control board; the circuit control board controls the electromagnetic switch according to the received weight parameter and liquid level parameter of the slurry, and the electromagnetic switch controls circulation of the slurry in the Marsh funnel according to a command of the circuit control board; and the property parameters of the slurry are further calculated. Automatic timing is realized through the circuit control board, and the slurry parameters are automatically received, so that the error of manual measurement is avoided, and the working efficiency is further improved.

The invention relates to a refrigerating fluid flow distributing structure, a micro-channel flow distributing assembly, a heat exchanger and an air-conditioner. The refrigerating fluid flow distributing structure comprises a cylinder, and the cylinder is provided with flow distributing cavities, a refrigerating fluid inlet and flow distributing channels. The flow distributing channels are groove-shaped flow channels which are formed along the outer surface of the cylinder. The refrigerating fluid inlet and each flow distributing cavity are communicated through fluid via the corresponding groove-shaped flow channel. The amount of refrigerating fluid entering the flow distributing cavities can be controlled, a condition is provided for accurately controlling the distribution amount of the refrigerating fluid, the height of the entire flow distributing structure cannot be affected, and the applied range is wider.

The present invention relates to a non-return valve (16) for a hydraulic tensioning system which is used in traction mechanism drives of internal combustion engines and which manipulates a hydraulic fluid flow between a pressure chamber (6) and a reservoir (9). The non-return valve (16) comprises a valve body (20) which is inserted in a housing (17) and which is embodied as a ball and which, when the non-return valve (16) is closed, is supported in a spring-loaded fashion against a valve seat (14) of a throughflow cross section (12). When the non-return valve (16) is open, the valve body (20) is assigned to a valve seat (21) of the housing (17), wherein the flow cross section (19) of the valve seat (21) ensures a fluid flow through the non-return valve (16).

The invention discloses an inner tyre production process and an extrusion molding device thereof. The process comprises a hot molding process of a tyre tube of an inner tyre and a molding step of a tyre tube connector of the inner tyre, wherein in the hot molding process, a step of spraying powder after extrusion refers to spraying of zinc stearate powder and simultaneously cooling of the sprayed powder and the tyre tube; the molding device comprises a powder spraying tube for spraying the zinc stearate powder into the molded inner tyre, a powder feeding tube for conveying the zinc stearate powder and a powder suction tube for sucking away residual powder; and sleeve water cooling systems are arranged at parts, arranged in an inner cavity of an extruding head, of the powder spraying tube, the powder feeding tube and the powder suction tube. According to the inner tyre production process, an extrusion process is improved and the characteristics of the zinc stearate powder are utilized, so that the isolation requirements of extrusion machining are met and the process requirements that splicing is realized and slow air leakage is prevented in a subsequent inner tyre machining production process are also met; and pipelines for spraying the zinc stearate powder and sucking out the zinc stearate powder are internally provided with the cooling systems, circulating water is used for cooling a powder spraying system and influences on the flowing of the zinc stearate powder, caused by high temperature in a machine head, are not caused.

The invention discloses an advanced oxidation device for wastewater, and belongs to the technical field of advanced oxidation. The problem of low ozone utilization efficiency is solved. According to the technical key points, the advanced oxidation device for the wastewater comprises an ozone generation device and a reaction tank; a gas conveying pipe is arranged between the ozone generation deviceand the reaction tank, the two ends of the gas conveying pipe communicate with the ozone generation device and the reaction tank correspondingly, the reaction tank is provided with a circulating pipewhich communicates with the reaction tank and the gas conveying pipe, the reaction tank is provided with an overflowing pipe, and a water discharging valve is mounted on the overflowing pipe; and theoverflowing pipe is higher than the junction of the gas conveying pipe and the reaction tank and lower than the junction of the circulating pipe and the reaction tank, and the reaction tank is provided with an air blowing device. Ozone participates in reactions for multiple times, the utilization efficiency of ozone gas can be effectively improved, the effect of reducing ozone gas consumption isachieved, the energy consumption of the ozone generation device is reduced, and the effect of energy conservation is achieved.

The invention discloses an image detection device based on analysis and retrieval, belongs to the technical field of image detection, and realizes that when an image detection device body works, light rays are gathered through a condensing lens and an anti-reflection film, dispersion is avoided, the image shooting effect is better, meanwhile, a negative pressure fan extracts internal hot air to be discharged outwards. The positive pressure fan extracts external air for supplement, and the air flows outwards along with the air and blows the collision ball body through the air outlet holes to impact the liquid-proof breathable film upwards, so that the heat dissipation fluid flows and is matched with the heat dissipation plate to accelerate flowing and dissipation of heat, and the heat dissipation effect is enhanced;the disc and the dustproof net rotate along with the positive pressure fan, an extrusion ball body in a release ball moves to extrude a diaphragm, water in the release ball is sprayed out through an atomization spray head, dust carried in extracted air is coalesced with water and increased, and therefore the dust falls under the action of gravity and is prevented from being excessively gathered on a dustproof net, and air flowing is affected.

The invention belongs to the field of optimal treatment of circulating water systems of thermal power plants, and particularly relates to strong permanent magnetic water treatment equipment and application. An upright post is arranged in middle of the equipment, a multilayer sleeve structure is adopted, the upright post is connected with an inner-layer sleeve through three brackets in a welding manner, every two adjacent layers of sleeves are connected through the three brackets in the welding manner, two rows of neodymium iron boron strong permanent magnets are mounted on the surface of each layer of sleeve in the direction of a pipeline shaft, and a waterproof baffle plate and a turbulence device are mounted outside the neodymium iron boron strong permanent magnets of each layer. The strong permanent magnetic water treatment equipment can be used for scale prevention, corrosion prevention, sterilization and algae removal of a circulating cooling water pipeline of a thermal power plant.

The invention relates to an automobile thermal management system which comprises a refrigerating medium loop, the refrigerating medium loop comprises a compressor, an air conditioner box, a first branch and a second branch, the air conditioner box comprises an evaporator and a condenser, an inlet of the condenser communicates with an outlet of the compressor, and an outlet of the condenser communicates with an inlet of the evaporator through the first branch. The first branch is communicated with an inlet of the compressor through a second branch, an outlet of the evaporator is communicated with the inlet of the compressor, and a first throttling piece is arranged on the first branch so as to control the flow of a refrigerating medium flowing into the evaporator and conduct throttling and pressure reduction on the refrigerating medium flowing into the evaporator. Two branches are arranged in the refrigerating medium loop, a high-temperature and high-pressure refrigerating medium flowing out of the compressor flows into the condenser and releases heat in the condenser, the refrigerating medium subjected to heat exchange is divided into two paths, one path flows into the evaporator through the first branch to lower the surface temperature of the evaporator, and the other path directly flows back to the compressor through the second branch to lower the surface temperature of the evaporator. And dehumidification at different temperatures is met through shunting.

The invention relates to a heat exchanger (1, 25, 35, 37) comprising a housing (2), with a primary inlet connector (3), a primary outlet connector (4), a secondary inlet connector (5), a secondary outlet connector (6), a primary flow path (7) between the primary inlet connector (3) and the primary outlet connector (4) on a primary side (8), a secondary flow path (9) between the secondary inlet connector (5) and the secondary outlet connector (6) on a secondary side (10), the primary flow path (7) being in heat-transferring connection to the secondary flow path (9). The heat exchanger (1, 25, 35, 37) comprises at least one control auxiliary device, arranged in the primary flow path (7) and the secondary flow path (9).; A constructive improvement to the heat exchanger is desirable which is achieved by means of running the control auxiliary device through a cavity (20), arranged between the primary flow path (7) and the secondary flow path (9).

The invention provides a universal electrode module for liquid electrolysis. The electrode module comprises a module fastening gasket 1 to which a threaded rod 7 is fixed, an electrolysis electrode 2,a non-electroconductive isolation gasket 3 for isolating electrodes 2 and 4 with different polarity, an electrolysis electrode 4, a cylindrical electrode 5 and a fastening gasket 6 with a convex ring, one end of the cylindrical electrode 5 has a bottom surface, and the other end is open; and the 2, the 3, the 4, the 5 and the 6 sequentially sleeve the threaded rod of the 1 through one respectiveinstallation hole, an inner screw thread of the convex ring, sleeving the threaded rod of the 1, of the 6 is screwed, so that the mechanical positions of the 1, the 2, the 3, the 4 and the 5 can be fixed. The electrode module provided by the invention can be installed in any electrolytic cell very simply and conveniently, stress generated by installation and sealing to the electrode module is counterbalanced by the fastening gasket 6, so that the electrode structure of the electrode module is not affected, mass production of a liquid electrolysis device is facilitated, and the consistency of products by mass production is ensured; and the electrode module developed by the invention has great significance for advancement of the liquid electrolysis device technology and improvement of product quality.

The invention discloses an industrial capacitively coupled contactless conductivity online measurement device and method. The device comprises an alternating current excitation source, an insulated pipeline, an exciting electrode, a detection electrode, an inductance module, a metal shield, a metal isolation plate, a metal flange connecting part, a first wire connecting terminal, a second wire connecting terminal, a signal processing module, a data acquisition module and a computer. The invention realizes the conductivity online measurement on an industrial conventional metal pipeline throughthe capacitively coupled contactless conductivity measurement technology. By using the metal flange connecting part, the insulated pipeline of the device can be conveniently connected with the metal pipeline on an industrial site. Simultaneously, the measured pipeline and the electrodes are mounted in a metal shielding housing, thereby improving the stability and the anti-interference ability of the device. The corresponding device has the advantages of high resolution, simple structure, non-invasive operation, no impacts on fluid in the pipeline and the like, thereby providing a helpful reference for non-invasive online measurement of the conductivity of liquid in the process industrial conventional metal pipeline.

The invention belongs to the technical field of nuclear reactor engineering heat transfer, and specifically relates to an alkali metal heat pipe driven by an electromagnetic pump and a heat transfer method thereof. On the surface, the power supply is connected to the electromagnetic pump; the heat pipe 202 also includes: a heat pipe casing 4, a heat pipe liquid-absorbing core 5, a heat pipe central air cavity 6 and an insulating layer 7; the inside of the heat pipe casing 4 is a heat pipe central air cavity 6; The outer wall of the central air cavity 6 is provided with a heat pipe liquid-absorbing core 5; the outer middle part of the heat pipe cladding 4 is provided with an insulating layer 7; the electromagnetic pump also includes: an electromagnetic pump groove, a primary iron core 201, an inner layer iron core 203 and a winding 204 ; the outer wall of the groove of the electromagnetic pump is provided with a primary iron core 201 and a winding 204 ; the inner center of the groove of the electromagnetic pump is fixed with an inner layer iron core 203 .

The invention discloses an extracting tank with a built-in partition plate. The extracting tank is characterized in that the middle part of a tank body is provided with the partition plate for dividing an inner cavity of the tank body into upper and lower parts, downward liquid spraying pipes are distributed on the partition plate along the circumference, and air passing pipes are arranged at the other positions of the partition plate; the inner diameters of the liquid spraying pipes are gradually reduced from an inlet to an outlet, the outlets of the liquid spraying pipes on the same circumference and the clockwise rotation tangential speed along the circumference are obliquely downward in a 45-degree angle, or the outlets of the liquid spraying pipes on the same circumference and the anticlockwise rotation tangential speed along the circumference are obliquely downward in the 45-degree angle, and the outlet directions of the liquid spraying pipes on the adjacent circumferences are opposite; a coil is arranged above the partition plate, is close to the partition plate and is arranged along the inner circumference of the tank boy, and the bottom of the coil is provided with downward spraying holes; and a circulating pump comprises a pump inlet and a pump outlet, the pump inlet is connected with a liquid outlet, and the pump outlet passes through the side wall of the tank body so as to be communicated with the interior of the coil. A turbulence liquid medicine is formed in the extracting tank, the uniformly mixing degree of a liquid medicine and a medicinal material at each part in the tank is promoted, and effective active ingredients in the medicinal material are rapidly fully extracted.

The invention relates to a hydraulic machine having an impeller wheel (1) that comprises a plurality of impeller blades (1.1); having a spiral housing (3) that encloses the impeller wheel and that is open toward said impeller wheel by a circumferential slit formed by two circumferential edges (3.1, 3.2); having a traverse ring, comprising two traverse ring decks (4.1, 4.2) that are connected to one another by tension anchors (4.3); wherein the spiral housing is composed of segments that meet in the flow direction and that are welded to each other, the ends of which segments stand on the respective traverse ring deck (4.1, 4.2) and are welded to said deck; wherein at the meeting point (11) between two segments that are adjacent to one another and one traverse ring deck (4.1, 4.2) a stiffening element (10) is provided that protrudes into the inner space of the spiral housing (3); and wherein the extension of the stiffening element into the inner space of the spiral housing is so small that the flow is not affected in a significant manner.

The invention belongs to the technical field of nuclear reactor engineering heat transfer, and particularly relates to an alkali metal heat pipe adopting an electromagnetic pump for auxiliary drive and a heat transfer method of the alkali metal heat pipe. The alkali metal heat pipe comprises a power source, the electromagnetic pump and a heat pipe body 202, wherein the electromagnetic pump annularly sleeves the outer surface of the heat pipe body 202, and the power source is connected with the electromagnetic pump; the heat pipe body 202 further comprises a heat pipe cladding 4, a heat pipe liquid absorption core 5, a heat pipe central gas cavity 6 and a heat preservation layer 7, the heat pipe central gas cavity 6 is formed inside the heat pipe cladding 4, the heat pipe liquid absorptioncore 5 is arranged on the outer wall of the heat pipe central gas cavity 6, and the heat preservation layer 7 is arranged in the middle part outside the heat pipe cladding 4; and the electromagnetic pump further comprises an electromagnetic pump groove, a primary iron core 201, an inner-layer iron core 203 and a winding 204, the primary iron core 201 and the winding 204 are arranged on the outer wall of the electromagnetic pump groove, and the inner-layer iron core 203 is fixed in the center of the interior of the electromagnetic pump groove.

The invention discloses a small accessory cleaning device for automobile accessory selling. The small accessory cleaning device for automobile accessory selling comprises a cleaning box, box covers are fixedly connected to the two sides of the outer wall of the top of the cleaning box, a feeding port is formed in the outer wall of the top of each box cover, and a feeding hopper is fixedly connected to the edge of the inner wall of the feeding port. The inner wall of the bottom of the feeding port is connected with a first corrugated pipe through a flange, the outer wall of the bottom of the first corrugated pipe is connected with a guide pipe through a flange, and the guide pipe is herringbone. A plurality of convex blocks are arranged on the inner wall of the guide pipe, the outer walls of the two sides of the guide pipe are fixedly connected with fixing rods, and the cross sections of the two fixing rods are in a T shape. According to the small accessory cleaning device for automobile accessory selling, stubborn impurities adhering to automobile accessories can be removed through collision, the situation that the automobile accessories stay on a guide plate under the action of astop lever can be prevented, the surfaces of the automobile accessories can be further cleaned, and the situation that the automobile accessories are accumulated together due to the fact that the falling speed of the automobile accessories is high can be prevented.

The invention discloses a smart home control device based on the Internet of Things technology, and relates to the technical field of the Internet of Things. Comprising a smoke exhaust ventilator and an Internet of Things module, the top of the smoke exhaust ventilator and the bottom of a flue are slidably installed through a sliding rail box, a control device is arranged outside the flue, and the control device comprises a telescopic motor, a telescopic rod, an L-shaped connecting rod, a limiting rod, a spiral cylinder, a belt, a rotating column and an activated carbon adsorption filter plate; the telescopic motor is in telecommunication connection with the Internet of Things module, and one end of the telescopic rod is fixedly embedded in the output end of the telescopic motor. According to the intelligent home control device based on the Internet of Things technology, when dense smoke is generated in a kitchen, the activated carbon adsorption filter plate can be controlled to rotate through the Internet of Things module for adsorption and filtration, and intercepted impurities can be collected and treated while adsorption of the activated carbon adsorption filter plate is controlled; meanwhile, the activated carbon adsorption filter plate can have vibration and self-cleaning functions, so that the dredging and filtering efficiency is improved.

The invention relates to an anti-press drainage tube for urethral catheterization. The anti-press drainage tube comprises a tube body. Anti-press rings are disposed in the tube body at intervals; and the width of each anti-press ring is 5mm. The beneficial effects are that with the arrangement of the anti-press rings, anti-press degree of the drainage tube can be improved; and effects on flow of medium in the drainage tube can be avoided.