104results about How to "Will not affect the flow" patented technology

The invention relates to a method for self-assembly growth of three-dimensional orderly porous materials, which is a method for self-assembly growth of multi-component material colloid crystals with single structures or composite structures and three-dimensional orderly porous membranes by combining assistant acceleration of evaporation through characteristic infrared light and the control of the boiling temperature of a solvent by decompression. The method basically overcomes the defect that the prior method is not suitable for the situations of overlarge colloid particles, overhigh boiling point of the solvent in a colloidal solution system, no high temperature resistance of the colloid particles, incapability of completing crystal growth and so on when the prior method is applied to cooperated self-assembly growth of the multi-component colloid crystals and three-dimensional orderly porous materials of the multi-component colloid crystals. The method has the characteristics of high efficiency, easy control, simple operation and good repeatability, can grow the high-quality multi-component colloid crystals and the three-dimensional orderly porous membranes, and is suitable for self-assembly and cooperated self-assembly of multi-component colloid particle mixed systems with various particle diameters and various varieties.

The invention relates to a gutta-percha masterbatch co-blended material capable of being directly used as a traditional rubber material. Gutta-percha is hard rubber at room temperature, cannot be directly used as a rubber material, thereby hindering large-scale application of the gutta-percha in rubber industries. The gutta-percha is specially co-blended with other rubber types to prepare a gutta-percha masterbatch. The preparation method can be divided into a dry process and a wet process, wherein the dry process comprises that through a temperature controllable open mill, an internal mixer, an extruder, a mixing machine and other processing devices, the gutta-percha is evenly mixed in other rubber types according to a certain proportion to prepare the co-blended new material; the wet process comprises that through a reaction kettle, a stirring kettle and other devices, the gutta-percha and other rubber types are dissolved in a good solvent according to a proportion and fully stirred to prepare the co-blended new material through solvent recovery and other processes. According to the processes, the gutta-percha raw masterbatch can be prepared; other auxiliary agents are added to prepare the gutta-percha composite masterbatch, and the barrier is cleared up for large-scale market application of the gutta-percha.

The invention provides a multi-parameter online monitoring system and method for a hot-pressing solidification process of a composite material, and the system comprises a temperature sensor, an FBG (fiber bragg grating) sensor, an FBG demodulation instrument, a pressure sensor, a data recorder, and an upper computer. A multi-parameter monitoring module operating in the upper computer executes themonitoring. The monitoring method comprises a step of temperature measurement, a step of pressure monitoring, a step of strain monitoring, and a step of stress monitoring. The system and method can achieve the multi-parameter real-time coordinative online monitoring, is high in accuracy, is high in sensitivity, and can continuously and truly reflect the actual conditions of various parameters of the composite material in the hot-pressing solidification process.

The invention relates to a purification device, particularly relates to a miniaturized photocatalyst air purification device and belongs to the technical field of air purification. The miniaturized photocatalyst air purification device disclosed by the technical scheme of the invention comprises an air sucking device for sucking air, a catalytic body for decomposing harmful substances and an ultraviolet LED lamp body for being matched with work of the catalytic body, wherein a light emitting face of the ultraviolet LED lamp body faces the catalytic body; the sucking device, the ultraviolet LEDlamp body and the catalytic body are sequentially distributed in the air flowing direction; air sucked by the sucking device sequentially passes through the ultraviolet LED lamp body and the catalytic body to be exhausted. The miniaturized photocatalyst air purification device disclosed by the invention has the advantages of compact structure, ability in effectively achieving air purification, ability in improving purification efficiency, low use cost, safety and reliability.

The invention belongs to the technical field of medical instruments, and particularly relates to a device for flushing the anorectum. A push rod can be rotated to control a limiting block and then control a vertical rod to rotate, the vertical rod rotates to control an arc-shaped piece to shield a liquid outlet to different degrees to form different spraying conditions, the size of the liquid outlet is convenient to adjust, different spraying effects can be achieved without replacing nozzles, the structure is novel and effective, the operation is easy and convenient, meanwhile, a rubber rod can be controlled to stretch out and shrink through an inflating airbag and a pressure relief valve, dirt in the anorectum can be scraped away when the rubber rod stretches out, flow of flushing liquidcannot be affected, and in the plugging and unplugging process, the discomfort of a patient is reduced when the rubber rod shrinks.

The invention relates to a preparation method of a hollow plate ceramic membrane, which comprises the following steps: preparing spherical aluminum oxide for a support body and spherical aluminum oxide for a microporous membrane; preparing slurry of the support body and the microporous membrane; preparing a support body green body, drying the support body green body, sintering the support body green body, spraying slurry to the support body, and sintering the ceramic membrane. The invention also discloses a hollow plate ceramic membrane, which comprises a support body and a microporous membrane which are integrated. The invention provides a preparation method of a hollow plate ceramic membrane, which converts general industrial wastes into industrial separation products with higher added value and improves the comprehensive utilization rate of spherical alumina production enterprises. The invention also provides a hollow plate ceramic membrane which can replace the existing organic flat-plate membrane, hollow fiber membrane or common ceramic flat-plate membrane, can be used in a harsh environment, has high mechanical strength and large flux, can be backwashed through reverse pressure application, reduces the cleaning frequency of the membrane and prolongs the service life of the membrane.

The invention discloses an experimental biological safe purifying platform. The experimental biological safe purifying platform comprises an operating platform frame; a working box is arranged at thecenter of the front side of the operating platform frame; a workbench is arranged at the bottom of the working box; semi-circulating air purifying mechanisms are arranged at the top and the bottom ofthe operating platform frame; glass walls are arranged on the side surfaces of the working box; a square hole is formed in the center of the front side surface of the working box; the top end of the square hole is movably connected with an operating window door; an anti-interference air purifying mechanism is arranged at the connection position of the operating window door and the square hole; theanti-interference air purifying mechanism is connected with the semi-circulating air purifying mechanisms; and a non-light experiment mechanism is arranged on the back side surface of the working box. According to the device, the working box still can maintain the clean environment when the operating window door is opened to perform experiment; meanwhile, the device can adapt to various experimental environments, so that the use range of the device is wider; in addition, part of air passing through the working platform can be completely utilized, waste is avoided and the burden of the air purifying device can be reduced.

The invention discloses drilling equipment for flange machining, and relates to the technical field of machining equipment. The drilling equipment for flange machining comprises a base, a main controlbox and a gear box. The bottom of the main control box is fixedly connected with the right side of the top of the base. The left side of the bottom of the main control box is slidably connected witha lifting drilling platform. The gear box comprises an upper shell and a lower shell. The surfaces of the upper shell and the lower shell are fixedly connected with fixed connecting blocks, and the fixed connecting blocks are fixedly connected through bolts. According to the drilling equipment for flange machining, a plurality of driven gears are arranged in the gear box and are driven by a driving gear at the same time, so that a plurality of cutters are installed to perform drilling at the same time; and the gear box can be easily disassembled and installed by utilizing the matching of a prism sleeve and a prism and the matching of threaded sleeves and fixed sleeves, so that gear boxes with different specifications are quickly replaced according to the number of machining holes requiredby different flanges, and the drilling equipment has wide machining range, simple operation and high working efficiency.

The invention discloses an auxiliary rehabilitation instrument based on three-dimensional printing. The auxiliary rehabilitation instrument comprises an arm sleeve, a palm sleeve and a long strip; the arm sleeve is provided with a connecting rod, a rotating pin is arranged between the connecting rod and the long strip, and the connecting rod and the long strip are rotatably connected through the rotating pin; one side of the rotating pin is provided with a first steering engine which is fixedly connected with the connecting rod and linked with the long strip through the rotating pin, the long strip is provided with a driving plate and a second steering engine, the driving plate and the long strip are rotatably connected, the driving plate is provided with a carrying plate and a third steering engine, the carrying plate is provided with a gear rack which is arranged in an arc shape, the second steering engine is in driving connection with the carrying plate through the gear rack, the palm sleeve is hinged to the driving plate and provided with a gear rod, and the third steering engine is provided with a plastic gear. According to the auxiliary rehabilitation instrument based on three-dimensional printing, good passive joint motion training can be performed.

The invention relates to a preheater applied to a liquid state lead bismuth alloy experimental loop. The preheater mainly comprises a material pipeline and an electrical heating layer covering the outer side of the material pipeline, wherein the material pipeline is provided with a material inlet and a material outlet; an insulating layer covers the outer side of the electrical heating layer, and the outer side of the insulating layer is a metal protection shell; and the preheater is arranged in a way of forming an inclination angle with a horizontal plane, the material inlet is arranged in a low position, and the material outlet is arranged in a high position. The preheater provided by the invention can carry out great temperature rise preheating on liquid state lead bismuth alloy, the temperature rising level can achieve 200 DEG C, no sealing measure is needed, and the change of a heating element can be realized without the evacuated liquid state lead bismuth alloy.

A high-reliability elastic soft-sealed gate valve, including a hand wheel, a valve stem, a valve cover, a valve body and a valve plate. The two ends of the valve body channel are the medium inlet and outlet respectively. Pass through the bonnet to connect with the valve plate, and the top is connected with the hand wheel. The bottom wall of the valve body channel under the valve plate is provided with a slightly convex arc surface, and the bottom surface of the valve plate is provided with a concave hole for inserting the slightly convex arc surface. , the height of the slightly convex arc surface is 2-6mm. The bottom walls of the medium inlet and outlet are provided with arc-shaped conical surfaces, the small openings of the arc-shaped conical surfaces face outward, and the inclination angle α is 3°-8°, preferably 5°. When the valve plate moves down and closes, the slightly convex arc surface will be inserted into the concave hole to establish the lower support point, coupled with the upper support of the valve stem, so that the original suspended valve plate becomes a structure with support up and down, completely solving the original The soft-sealed gate valve has technical problems that the valve plate is prone to displacement, damage, short service life and affecting the sealing effect due to the lack of support at the lower part of the valve plate.

The invention relates to a drainage system for municipal roads, and belongs to the technical field of municipal road drainage. The drainage system comprises a first drainage outlet, a second drainageoutlet and a drainage ditch, wherein the first drainage outlet is arranged on the edge of a road surface; the second drainage outlet is arranged on the side surface of a sidewalk; the drainage ditch is located below a road; a drainage channel is arranged between the second drainage outlet and the drainage ditch and is connected to the side surface of the drainage ditch; a supporting cover is arranged at the bottom of the drainage ditch below the first drainage outlet, is connected to the bottom of the drainage ditch through an elastic part and can move up and down to open or close a water outlet of the lower end of the drainage channel; the supporting cover comprises a box body with an opening on the lower side surface and a water receiving plate arranged on the upper surface of the box body; and the box body is connected to the water receiving plate through a supporting rod. The drainage system can adjust the drainage amount of the drainage outlets according to the amount of accumulated water on the road, achieves a relatively good drainage effect and reduces the wasting of resources.

The invention discloses a deposition reaction device for manufacturing a low-loss optical fiber preform rod and a pressure adjusting method, and relates to the technical field of manufacturing of optical fiber preform rods. The device comprises a pressure gauge, a controller and a reaction vessel with an open top, wherein the pressure gauge and the reaction vessel are connected, and high-purity inert gas with purity higher than 99 percent circulates in the reaction vessel; a first blast burner for making a cladding layer and a second blast burner for making a core layer are arranged on one side of the reaction vessel, and the second blast burner is located between the first blast burner and a plane of the bottom of the reaction vessel; the bottom of the reaction vessel is connected with a matching pipe, the matching pipe is communicated with the inside of the reaction vessel, a flow adjuster is arranged on the matching pipe and the flow adjuster is connected with the pressure gauge through the controller. According to the deposition reaction device for manufacturing the low-loss optical fiber preform rod and the pressure adjusting method, metal impurities can be effectively prevented from entering glass micro-particle sedimentary bodies, the content of metal impurities in the manufactured optical fiber preform rod is low and the impurity absorption loss is smaller.

The invention provides a pile-foundation steel reinforcement cage anti-floating device and anti-floating method. The pile-foundation steel reinforcement cage anti-floating device comprises a leakage plate used for being connected with a steel reinforcement cage and a grouting hard tube, a slurry outlet of the grouting hard tube is pressed against the leakage plate, and a first leakage hole locatedbelow the slurry outlet is formed in the leakage plate. The steel reinforcement cage is subjected to buoyancy, the leakage plate is fixedly connected to the bottom of the steel reinforcement cage, the steel reinforcement cage and the leakage plate are placed into the pile foundation hole together, the grouting hard tube is pressed against the leakage plate, the leakage plate is subjected to downward pressure from the grouting hard tube, the leakage plate is fixedly connected to the bottom of the steel reinforcement cage so as to applying the downward pulling force to the steel reinforcement cage, the pulling force is used for counteracting the buoyancy, and therefore the steel reinforcement cage can be prevented from floating. The grouting hard tube can also be used for pouring concrete in subsequent engineering, the first leakage hole is formed below the slurry outlet, and therefore the leakage plate cannot influence the flow of the concrete, and normal construction of the construction can be guaranteed. According to the pile-foundation steel reinforcement cage anti-floating device and anti-floating method, the structure is simple, necessary facilities for pile-foundation construction are fully utilized, the cost is low, and the anti-floating effect is good.

The invention discloses an SF6 high-voltage circuit breaker arc extinguish chamber with a water removal function, and belongs to the technical field of high-voltage SF6 circuit breakers. The arc extinguish chamber comprises an arc extinguish chamber shell (13), a static contact mechanism (5) and an inner base (17) are arranged in the arc extinguish chamber shell (13), a moving contact mechanism isarranged in the middle of an inner cavity of the arc extinguish chamber shell (13), and the arc extinguish chamber is characterized in that an arc extinguish chamber suction box (1) and a bottom heating wire (19) are arranged at the top and the bottom of the inner cavity of the arc extinguish chamber shell (13); an insulating pull rod (10) is of a hollow structure; an insulating pull rod closing-up opening (12) is formed in an inner cavity of the insulating pull rod (10), and a pull rod suction barrel (14) is further arranged at the bottom of the insulating pull rod closing-up opening (12). According to the invention, water vapor in the arc extinguish chamber can be removed; the insulating pull rod closing-up opening and the pull rod suction barrel are arranged in the insulating pull rod,so that water vapor generated in high-temperature gas during arc extinguish can be isolated and sucked.

The invention relates to the technical field of pipeline valves and particularly relates to a combined air valve comprising a valve body and a valve cover; an exhaust port is formed in the valve cover, and an upper floating body and a lower floating body which are overlaid up and down and of which the densities are smaller than the density of a fluid are arranged in a valve cavity of the valve body; a guide device is mounted on the valve cover; the upper floating body and the lower floating body can be arranged in the valve cavity in a way of vertically moving up and down through the limitation of the guide device, gas exhaust gaps are remained between the upper floating body and the inner wall of the valve body and between the lower floating body and the inner wall of the valve body, and an exhaust microchannel communicating with the exhaust port is formed in the upper floating body; the lower end of the exhaust microchannel is connected with the upper end surface of the lower floating body in a sealing way when the upper floating body and the lower floating body are connected together; and the lower end of the exhaust microchannel communicates with the gaps between the floating bodies and the inner wall of the valve body when the upper floating body and the lower floating body are disconnected. The combined air valve is simple in structure, convenient to mount, free of artificial unattendance, capable of rapidly and safely exhausting gases in a pipeline and prolonging the service life of a main structure of the pipeline and extremely high in popularization value.

The invention discloses a rotary quick-opening type cabin cover of a light-small type unmanned aerial vehicle. The rotary quick-opening type cabin cover comprises a cabin cover body, rotating hinges, hinge cushion blocks, hinge supports and a plurality of 90-degree directional locks. One ends of the rotating hinges are connected with the cabin cover body through the hinge cushion blocks in a threaded mode, and the other ends of the rotating hinges are connected with a main beam of the unmanned aerial vehicle in a threaded mode. The 90-degree directional locks are fixedly mounted at the edges of the cabin cover body through threads. The rotary quick-opening type cabin cover of the light-small type unmanned aerial vehicle has the beneficial effects that (1) by using the 90-degree directional locks, flowing of air flows on the surface of the unmanned aerial vehicle is not affected, the cabin cover is attractive, and most importantly, rapid opening and locking can be achieved; and (2) by using the rotating hinges, the cabin cover and a fuselage of the unmanned aerial vehicle are integrally and rotationally connected, and losing of the cabin cover after demounting can be avoided.

The invention discloses a hydrothermal circulation system for a wall. The hydrothermal circulation system comprises a cold water pool, a hot water pool, a water storing layer and a control system. The cold water pool is buried under the ground, the water storing layer is fixed to the side face of the wall, the water storing layer comprises an inner side plate attached to the side face of the wall, an outer side plate corresponding to the inner side plate and a water containing layer arranged between the inner side plate and the outer side plate. The outer side plate is provided with a plurality of diversion plates vertically arranged, the cold water pool is connected with the water storing layer through a first pipeline, the water storing layer is connected with the hot water pool through a second pipeline, and the hot water pool is connected with the cold water pool through a third pipeline. According to the hydrothermal circulation system for the wall, water in the cold water pool, water in the water storing layer and water in the hot water pool circulate continuously, water flow in the water storing layer blocks or releases temperature rising of the wall body, so that the indoor temperature is reduced, the effects of low energy consumption and high cooling in high-temperature weather are achieved, water can be drained in winter, an air layer is kept, a certain cold preventing effect is achieved, and the hydrothermal circulation system is worthy of being popularized.

The invention provides a baking tray assembly and a cooking electric appliance with a baking function, and relates to the technical field of food baking equipment. The baking tray assembly comprises a rotating part, a driving device and a baking tray; the rotating piece is arranged below the baking tray; the rotating piece is provided with a first tooth piece, the bottom of the baking tray is provided with a plurality of second tooth pieces, the second tooth pieces are distributed in a circular ring shape, and the first tooth piece is meshed with the second tooth pieces; and the driving device is used for driving the rotating part to rotate. By means of the baking tray assembly, the technical problems that when biscuits, pizza and other foods with flat appearances are baked, a driving structure for driving a baking tray to rotate in an existing rotatable baking tray structure can affect the flowing direction of hot air in an oven, metal chippings can fall onto the baking tray after long-time use, and the body health of a user is affected are solved; and the technical effect that the food cooking uniformity is improved on the premise that cooking is not affected is achieved.

The invention discloses a flow detection method based on a sound transmission signal. The sound transmission signal in a pipeline is received, the received sound transmission signal is analyzed, and thus the flow of a fluid is detected. The method has the characteristics of high sensitivity, safety, environmental protection, simpleness, convenience, quickness and the like, the distribution frequency of a Carmen vortex street and the St dimensionless number of a pipeline system can be accurately determined, and great significance for development and application of a Carmen vortex street flow meter is achieved.

The invention provides a corona preionization device which comprises corona outside electrodes arranged in a concentric mode, dielectric pipes and corona inner electrodes. The corona inner electrodes are arranged inside the dielectric pipes and the radius of the corona inner electrode is slightly less than that of the dielectric pipe. The corona outside electrodes are connected with a first main discharging electrode of a discharge chamber in an electric way. The corona inner electrodes are connected with a second main discharging electrode of the discharge chamber through a lead. Higher preionization electron density distributed evenly is obtained by using widespread corona outside electrodes and dielectric pipes to form barriers with intervals to discharge. UV (ultra violet) radiation is limited in the main discharging area by the outside electrodes; thereby the use ratio of UV is enhanced and harmful arc and parasitic discharging are avoided. The structure of the corona electrode is compact with no effect on work gas flowing. The method that the corona inner electrode with radius slightly less than that of the dielectric pipe is used, one end of the inner electrode is fixed and the other end is in flexible connection through clips eliminates effect of inner electrode thermal expansion due to long time operation and improves the long time operation stability of the preionization device.

The present invention reduces noise while a device is in operation without impairing a Venturi mixer's function of producing mixed gas. Source gas (G) and combustion air (A) are mixed by a Venturi mixer (1) to produce mixed gas (M). A parallel part (7) having a constant inner diameter in the direction of flow of the mixed gas (M) is provided so as to connect with the outlet side of the throat (5) of the Venturi mixer (1). The parallel part (7) is provided with a sound damping device (2) in which a cylindrical sound damping body (11) produced from foamed polyethylene is provided inside a tube body (10). By passing the mixed gas (M) through the sound damping body (11), noise generated when the source gas (G) and the combustion air (A) are mixed can be effectively reduced without affecting the flow of the mixed gas (M).

The invention discloses a solder ring for a microwave component radio frequency connector and a welding method thereof, belongs to the technical field of solder rings. The solder ring for the microwave component radio frequency connector is provided. The invention provides the solder ring for the microwave component radio frequency connector and the welding method thereof. According to the solder ring for the microwave component radio frequency connector and the welding method thereof, a spray head is above a guide ring, a motor is used for driving the guide ring to rotate, the spray head does circular motion, the spray head rotates around the guide ring for angle adjustment, and the defects that in the microwave component assembling process, the sealing effect of a through-wall radio frequency connector is poor, and the conductive glue bonding and manual soldering paste coating are not uniform are overcome. The test passing rate, the finished product rate and the working efficiency of products are improved. The working efficiency is greatly improved, the welding uniformity and the penetration rate of solder adopting the design are also greatly improved from the welding effect, and the sealing test can also meet the product requirements.

The embodiment of the invention provides a heat conduction pipe and electronic equipment. The heat conduction pipe comprises a flexible pipe, a liquid absorption core and a sealing film, wherein the liquid absorption core is fixed to the interior of the flexible pipe and is filled with liquid; the sealing film comprises a second sealing part and a third sealing part which are respectively fixed tothe two ends of a first sealing part; and the flexible pipe is sleeved with the first sealing part, and nozzles at the two ends of the flexible pipe are respectively covered with the second sealing part and the third sealing part, so that a sealed cavity is formed inside the flexible pipe. Therefore, after the flexible pipe is sleeved with the sealing film, the flexible pipe is one of bendable pipe bodies, the bendable pipe body is an elastomer, and the liquid absorption core can also be bent at the same time, so that the heat conduction pipe is restored to the original shape after being deformed by external force, the cavity inside the heat conduction pipe is not changed all the time, the steam flow inside the heat conduction pipe is not influenced, and the heat conduction pipe is not broken with the reverse folding of a display screen folding mechanism of the electronic equipment.

The invention relates to the technical field of municipal engineering. The invention aims to provide a combined reinforcing rib structure which can greatly improve the structural strength of a box body without affecting the water storage function of the box body. The combined reinforcing rib structure comprises a combined plastic box body, wherein the box body is internally provided with a plurality of meshed reinforcement structures; the meshed reinforcement structures are arranged in a crisscross manner, so that a reinforcing frame is formed; the shape of the reinforcing frame is matched with that of the box body; the size of the reinforcing frame is matched with that of the box body. The reinforcing frame adopted by the combined reinforcing rib structure is conveniently processed, and can be used for overall supporting the box body on the premise of not affecting the general functions of the box body, so that the integrally structural strength of the box body is greatly improved. The reinforcing frame is especially suitable for the combined box body made of plastic. The combined reinforcing rib structure has the advantages that the structure can be widely applied to the construction of municipal facilities, such as underground ponds, electric power wells and valve wells, and can be ingeniously combined with various types of equipment and facilities, so that the structural strengths of all facilities are greatly optimized under the condition of not affecting the normal use of all the facilities, the installation technologies of all the facilities are simplified, and the effect of extremely strong universality is achieved.

The invention relates to the technical field of household appliances, in particular to an air channel structure and a device with the same. The air channel structure comprises an air rotor, an air channel body, a heating structure and a control device, wherein the air channel body is arranged on the exterior of the air rotor, an air channel is formed between the air channel body and the air rotor,the heating structure is arranged on the air rotor, and the control device is electrically connected with the heating structure, and suitable for controlling starting and stopping of the heating structure when the air rotor rotates. By arranging the heating structure on the air rotor, air in the air channel can be directly heated, influence from the heating structure to the air volume in an air outlet or air inlet is prevented, and meanwhile the control device is used for controlling the starting and the stopping of the heating structure so as to enable the air channel structure to not only output hot air but also output cold air, a moving mechanism of the heating structure does not need to be added, and then toppling risk of the device with the air channel structure is avoided.

The invention discloses a rock slope ecological regreening protection structure. The rock slope ecological regreening protection structure comprises a slope, a slope substrate layer is arranged on the slope, a rectangular frame is arranged on the slope substrate layer, a water storage frame integrated with the rectangular frame is arranged at the lower end of the rectangular frame, the rectangular frame is connected with the slope through a connecting mechanism, and the rectangular frame is filled with planting soil abutting against the slope substrate layer. The invention further discloses a maintenance device of the rock slope ecological regreening protection structure. A first protection net, a cotton layer and a second protection net are jointly provided with a plurality of fertilizer liquid pipes in a penetrating mode, and the multiple fertilizer liquid pipes are all inserted into the planting soil. The maintenance device can effectively prevent the loss of the planting soil, can improve the efficiency that rainwater permeates into the planting soil, and improves the slope greening effect; and meanwhile, the later maintenance of the planting soil and green plants is facilitated through an injection mechanism, simpleness and rapidness are achieved, and fertilizer liquid pipes are conveniently disassembled for cyclic utilization.

The invention discloses a steam purification production line in the production of diketene. The production line comprises: an acetic acid purification evaporation device for converting a raw materialacetic acid into acetic acid vapor, and a purification device for removing impurities produced / carried in the acetic acid vapor production and acetic acid vapor transportation. The purification devicecomprises a primary purification device and a secondary purification device. The primary purification device is arranged in the acetic acid purification evaporation device. The secondary purificationdevice is arranged outside the acetic acid purification evaporation device and is connected to the acetic acid purification evaporation device. The interior of the acetic acid purification evaporation device and the interior of the secondary purification device form a channel for flowing acetic acid vapor. The vapor purification production line in the diketene production can timely and effectively remove various impurities in acetic acid gas before entering the cracking equipment in stages according to types and facilitate impurity recovery in the later stage.

The invention discloses an offset type pressure relief device of a membrane pump. The offset type pressure relief device is arranged on a pump cover body and comprises a chamber, a high-pressure hole, a low-pressure hole, a piston, a spring and a sealing cover, wherein the chamber is formed in the pump cover body and is inwards concave; the high-pressure hole and the low-pressure hole which are respectively communicated with a high-pressure cavity and a low-pressure cavity of the membrane pump are formed in the chamber; the piston, the spring and the sealing cover are sequentially arranged in the chamber; the chamber is arranged at one side which is inclined to the pump cover body, the high-pressure hole and the low-pressure hole are both formed in the bottom part of the chamber, and the high-pressure hole and the low-pressure hole are blocked by the end parts of the piston. Since the offset type pressure relief device disclosed by the invention is adopted, the fluid flowing resistance is reduced, the efficiency of the membrane pump is increased, the noise of the membrane pump is reduced, and fluid cannot flow into the pressure relief chamber to soak the spring; since the offset type pressure relief device is simple in structure, a die is simplified, the cost of the die is reduced, and the cost of an injection molding material is reduced.

The invention discloses a well drilling device. The well drilling device comprises a drill bit and a high-frequency percussion auxiliary well drilling mechanism; and the high-frequency percussion auxiliary well drilling mechanism is connected with the drill bit, and at least generates 10,000 times of high-frequency and low-amplitude percussion actions per second to assist in well drilling of the drill bit. The high-frequency percussion auxiliary well drilling mechanism comprises a connecting barrel connected with the drill bit, a high-frequency vibration generator and a converter are arranged in the connecting barrel, the converter converts high-frequency mechanism vibration generated by the high-frequency vibration generator into high-frequency and low-amplitude percussion, and the low-amplitude percussion is transmitted to the drill bit. By the well drilling device, drilling speed can be increased, and the service life of a tool can be prolonged.