42results about How to "High osmotic pressure" patented technology

The invention relates to a method for preparing alpha phase and beta phase silicon nitride powder by improved direct nitriding method. The method is mainly an improvement based on the existing direct nitriding method; metallic silicon powder and nitrogen react in a completely sealed reaction device; reaction gas is mixed gas of the nitrogen and inert gas (such as argon); and the inert gas has two functions of serving as shielding gas to prevent the silicon powder from oxidation and performing supercharging to raise seepage pressure of the nitrogen to promote nitriding of metallic silicon during reaction. The reaction speed of the metallic silicon and the nitrogen is controlled by adjusting the proportion of the nitrogen in the mixed gas to control the temperature in a reaction vessel, and a silicon nitride product with an objective constituent phase (an alpha phase and a beta phase) can be obtained finally. The method is simple in operation process, reduces energy and raw material consumption, does not require an additional diluent, a catalyst and the like, greatly saves production cost, and facilitates realizing industrial production.

The invention provides a membrane type sewage filtering system which comprises an outer pipe body and an inner pipe body; a pipe type clean water chamber is defined between the outer pipe body and the inner pipe body; the inner pipe body is internally provided with a column type sewage chamber; two ends of the clean water chamber are sealed by seal stoppers; the clean water chamber is introduced outwards to form a clean water outlet; two ends of the sewage chamber are connected with a sewage circulation flow running system with a circulating pump; the outer pipe body is made from a water impermeable material; the inner pipe body consists of a filtering membrane and a membrane support clamped at two sides of the filtering membrane; the sewage chamber is internally provided with a hydraulic drive part, and the hydraulic drive part rotates around the axes of the inner pipe body under the impact of water body; when the hydraulic drive part rotates, the sewage in the inner pipe body is driven to quickly rotate. When the system is used for filtering the sewage, the amount of particle impurities on the surface of the filtering membrane can be greatly reduced, and the side impact of the water body on the filtering membrane can be reduced; the membrane type sewage filtering system not only is higher in filtering efficiency, but also is not easily damaged.

The invention discloses an infiltrating road gutter inlet having a secondary silt settling function. The infiltrating road gutter inlet comprises a rainwater collecting and primary settling well and a silt settling and inflating well, wherein the rainwater collecting and primary settling well and the silt settling and inflating well are arranged in an adjacent mode and the silt settling and inflating well is deeper than the rainwater collecting and primary settling well; a primary collecting device is movably arranged in the rainwater collecting and primary settling well; a secondary collecting device is movably arranged in silt settling and inflating well; a cover plate, which is provided with a rainwater grate, is arranged on the top side of the rainwater collecting and primary settling well; a well cover, which is free from a rainwater grate, is arranged on the top side of the silt settling and inflating well; the upper side of the rainwater collecting and primary settling well is connected to the upper side of the silt settling and inflating well by virtue of a communicating pipe; an overflow pipe, which communicates with a road rainwater inspection well, is arranged at the upper side of the silt settling and inflating well; a secondary filtering section and a secondary silt settling section are arranged on the lower section of the silt settling and inflating well sequentially from top to bottom; and an inflating pipe, which is connected to surrounding soil bodies, is arranged on the secondary filtering section. The gutter inlet provided by the invention can effectively reduce emission pressure of a road rainwater main pipe and relieve or avoid the occurrence of road basement settlement and waterlogging phenomenons; and the technology for forming the gutter inlet is mature, convenient to construct and easy for daily maintenance.

The invention relates to a testing device for simulating a seepage failure of a dam with upper part defects and a construction method thereof. The testing device comprises a model tank and a dam model arranged in the model tank. An arch simulative ant channel is formed in the upper part of the dam model. A spherical area is arranged near the position, close to the downstream dam slope, of the simulative ant channel of the dam model, and an artificial sprinkler is arranged above the model tank. A plurality of sets of monitoring sensors are buried near the simulative ant channel in the dam model. The construction method of the testing device comprises the steps that firstly, clay is made into a soil sample, an arch thin pipe is buried on the upper part of the dam model, and tamping is conducted after the soil sample is made higher than the thin pipe through filling; and secondly, the portion, on the periphery of the thin pipe, of the soil sample is excavated to be spherical, the excavated portion of the soil sample is backfilled again to make a clay layer in the spherical area become looser towards the thin pipe, the simulative ant channel is generated by pulling out the pre-buried thin pipe after filling is completed, and the multiple sets of monitoring sensors are arranged along the simulative ant channel. The testing device can be used for studying preferential flow effects of the upper part defects of the homogeneous dam and the disaster-causing mechanism inducing the seepage failure of the homogeneous dam.

The invention relates to a high-temperature and high-pressure true triaxial direct shear fracture seepage coupling testing device. Two first pressure heads and two pressure assemblies are arranged above and below a rock sample in a manner of being symmetrical about the center of the rock sample. The two second pressure heads are arranged on the left and right sides of the rock sample in a central symmetry manner relative to the rock sample. The first pressing head comprises a first pressing head body provided with a groove part. A part of the pressure assembly is accommodated in the groove part. The pressure assembly comprises a rubber capsule and a base plate, and the rubber capsule applies pressure to the rock sample through the base plate. Seepage media in a first seepage network groove formed in the first pressure head main body and a second seepage network groove formed in the base plate apply seepage pressure to the rock sample. The triaxial testing machine applies lateral confining pressure, axial pressure and high temperature to the rock sample. The true triaxial direct shear fracture seepage testing device has the beneficial effects that the true triaxial direct shear fracture seepage testing device is combined with a triaxial testing machine, a true triaxial direct shear fracture seepage test can be carried out on a rock sample under high-temperature and high-pressure conditions, and the practicability and the reliability are relatively high.

The invention discloses a multifunctional automatic flexible wall permeability tester and a testing method thereof. A single-chip microcomputer control system for controlling a hydraulic device to work and a data acquisition system for acquiring data are arranged in a console; a cylindrical cavity, an upper cover and a base are connected through a sealing fixing piece; an exhaust port is formed inthe upper cover; the base is provided with an inlet channel used for being communicated with a penetrating fluid inlet, an outlet channel used for being communicated with a penetrating fluid outlet and a confining pressure channel for being communicated with a confining pressure applying opening. A sample table, a permeable stone, filter paper, a sample and a hollow sample upper seat are sequentially arranged on the base in the cylindrical cavity from bottom to top, the inlet channel extends to the middle of the base from a penetrating fluid inlet and vertically and upwards penetrates throughthe sample base, and the top end is communicated with an outlet channel of the penetrating fluid outlet through a pipeline; a first hydraulic outlet and a second hydraulic outlet are connected with apenetrating fluid storage device water inlet and a confining pressure applying opening respectively, and a penetrating fluid storage device penetrating fluid outlet is connected with the penetratingfluid inlet. The tester is high in operation automation degree, high in permeation efficiency and capable of simulating acid-base permeation conditions.

The invention relates to sewage filtering equipment, relates to the technical field of sewage treatment and mainly aims at solving the technical problem that an existing spray head is arranged at thedownstream side of a draught fan to reduce the pressure of sewage seepage on an ultrafiltration membrane to affect a sewage filtering effect. The mainly adopted technical scheme is that the sewage filtering equipment comprises a first shell pipe, a second shell pipe, an ultrafiltration membrane, an air blowing device and a spray head connected with a sewage inlet pipe; the air blowing device comprises a wheel disc and a plurality of fan blades, and the wheel disc is cylindrical and is rotatably arranged in the first shell pipe; the spray head is arranged inside the wheel disc, the plurality offan blades are circumferentially arranged on the inner wall of the wheel disc and are arranged around the spray head, and gaps exist between the fan blades and the spray head; the first shell pipe isprovided with a first shell plate for forming the inner wall of the first shell pipe, and the first shell plate is a vibration plate and is located at the downstream side of the air blowing device; and the spray head is arranged to face to the first shell plate so that water sprayed from the spray head hits against the first shell plate.

The invention relates to a pseudo random pulse sequence electric simulation therapeutic instrument and a working method thereof. A single-chip microcomputer endows a pseudo random encoding program; and an electrode A and an electrode B outputs an electric simulation pulse sequence, wherein the polarity and amplitude of the sequence can be changed and the pulse amplitude, pulse width and pulse period of the sequence are modulated by a pseudo random code. The electric simulation pulse sequence is used for simulating an acupuncture point to eliminate accumulation of free radicals of a corresponding organ part; and the histocyte can be protected from being damaged and correct transmission, transcription, and copying of DNA information of stem cells can be guaranteed based on dynamic balancing of the free radical level enables. According to the invention, the shortest period of the generated electric simulation pulse changing randomly is 333ms (3Hz) and matching with physiological parameters of muscle contraction of the human body is realized, so that the electric simulation effect is good; the width of the electric simulation pulse changing randomly is (5-20) ms and time occupied by each electric simulation pulse is larger than ascending branch time of cell excitation, so that each pulse can stimulate excitation of the cell once.

A process for the recovery of purified water from a reverse osmosis reject stream includes preconditioning a reject stream to remove scaling ions and provide preconditioned water; separating any precipitate that forms in the preconditioned water to form a feed stream; subjecting the feed stream to high pressure membrane filtration system including a recirculating, high pressure pump generating a permeate stream and a second reject stream; adding a make-up water stream to the feed stream; and separating the permeate stream as purified water. Additional features and embodiments are also provided.

The invention provides a reverse osmosis system with a magnetic coating. The system comprises a housing provided with a filtering layer and a water production pipe inside; the filtering layer includes a water incoming channel layer, a film layer, a water producing channel layer, a film layer, a water incoming channel layer sequentially from exterior to interior; the water incoming channel layer is provided with a metal coating provided with an electrode, and the electrode penetrates the housing to be provided with a wiring terminal. The magnetic coating of metal material is adopted, the magnetic field is provided after power is supplied to the coating, partial heavy metal ions and ions affected by the electrode in the water move in an orientated manner instead of acting on the filtering films directly, and the film surfaces are prevented from blocking due to accumulation of ions in the water.

The invention discloses a SCAP type cabin opening method with pressure based on an earth pressure balance shield machine. Grain composition of a stratum where the shield machine is located is collected, and a suitable mud material is selected. A gap between the shield machine and the stratum where the shield machine is located, and pores of a soil body of an excavation surface are injected with mud to be blocked, and the soil body around the shield machine is reinforced; a part of muck in a soil cabin is discharged, mud is injected into the soil cabin, and the excavation surface is kept stable; then a cutter disc is retracted, seepage pressure of the mud in the soil cabin is improved to conduct mud seepage, and an integral air tight mud film is formed on the excavation surface; and finally, the muck and the mud are discharged to prepare cabin opening operation. The mud film is effectively formed, stability and the airtight property of the excavation surface are ensured, the problems ofdifficulty of cabin opening with the pressure in a high-permeable stratum, and poor air tightness are solved, and preparation time of the cabin opening operation with the pressureis saved. Accordingto the SCAP type cabin opening method, the technological process of mud film formation is easy and simple to do, other equipment does not need to be added, andthe simple and practicable, quicker and more economic method of earth pressure shield cabin opening with the pressure is provided.

The invention discloses a self-suction semi-permeable membrane drainage network which comprises PVC pipes connected in a crisscross mode; the two ends of each longitudinally-arranged PVC pipe are sealed through pipe plugs respectively; one end of each transversely-arranged PVC pipe is sealed through a pipe plug, and the other end of the transversely-arranged PVC pipe is opened to serve as a liquidinjection opening; a plurality of permeation holes are formed in the PVC pipes, the outer side surfaces of the PVC pipes are coated with semi-permeable membranes, and a protective layer is arranged outside the semi-permeable membrane. The invention further discloses an implementation method of the self-suction semi-permeable membrane drainage network, water in soil penetrates through the semi-permeable membranes to enter the pipes to be discharged by means of the osmotic pressure of solutions inside and outside the PVC pipes, the PVC pipes drain water at the same time, the drainage area is enlarged, the drainage process is simple and efficient, manpower and material resources are saved, the drainage efficiency is high, and the increase of the foundation bearing capacity is effectively promoted. In addition, dust pollution is avoided in the rapid water reducing process, the used sulfite pulp waste liquid is non-toxic, high in viscosity and not prone to seeping out of the semi-permeablemembrane, good seepage pressure is achieved, and the environmental protection requirement is met.

The invention provides an eye drop. The eye drop can be used for activating proteolytic enzymes in crystalline lenses and recovering the transparency of the crystalline lenses so as to treat cataract and has the advantages of good treatment effect, high effect taking speed, no recurrence, no side effect and the like. Simultaneously, the invention further provides a preparation method for the eye drop. The method comprises the steps of taking ingredients of the eye drop as raw materials, and carrying out steps, i.e., physical mixing and activating so as to prepare the eye drop. The method has the advantages that the preparation method is simple in operation, the prepared eye drop has a good treatment effect, and the like. Further, the invention also provides application of the eye drop provided by the invention. The eye drop provided by the invention can be used for effectively recovering the transparency of the crystalline lenses and treating the cataract; meanwhile, the eye drop provided by the invention also has a very good treatment effect on ocular hypertension and particularly the ocular hypertension induced by acute glaucoma.

The invention relates to a novel sewage filtering device, which relates to the technical field of sewage treatment, and mainly aims at solving the technical problems that the existing sprayer is arranged at the downstream side of a fan, so that the seepage pressure of the sewage on an ultrafiltration membrane is reduced, and the sewage filtering effect is influenced. The novel sewage filtering device mainly is characterized in that the novel sewage filtering device comprises a first case pipe, a second case pipe, an ultrafiltration membrane, an air blowing device and a sprayer used for being connected with a sewage inlet pipe, wherein the air blowing device comprises a wheel disc and a plurality of fan blades; the wheel disc is in a round tube shape and is rotationally arranged in the first case pipe; the sprayer is arranged inside the wheel disc; the plurality of fan blades are arranged on the inner wall of the wheel disc in the circumferential direction and are arranged around the sprayer; a gap is formed between the fan blades and the sprayer; the first case pipe is provided with a first case pipe forming the self inner wall; the first case plate is a vibration plate and is positioned at the downstream side of the air blowing device; the sprayer is arranged in a way of facing the first case plate so that water sprayed out from the sprayer collides the first case plate.

The invention discloses an ideal dragging motor of waterproof sealing using oil liquid jacking and capable of deep diving and free of maintenance and applied to an underwater device. A rotor (2) is atleast surrounded by a narrow-type metal sealing isolated shield (4) in a three-dimensional form, and a motor shaft seal (7) capable of downwardly penetrating a rotary shaft (6) is arranged at the bottom of the narrow-type metal sealing isolated shield (4); an oil liquid S fills the narrow-type metal sealing isolated shield (4); the connection of all splicing gaps for the narrow-type metal sealingisolated shield (4) is realized through a non-removable welding technology; the dragging motor is applied to other underwater devices in the vertical direction underwater through positioning of a mounting plate frame (W) connected with the motor; and the oil liquid is a light oil liquid S of a low freezing point less than 0 DEG C. The accumulated duration of one-time operation and idleness of thedragging motor under the water generally can be more than 15 years, and may even reach 50 years or more.

The invention provides a sewage purification device, relates to the technical field of sewage treatment, and mainly solves the technical problems that the existing spray head is arranged at the downstream side of a fan, so that the seeping pressure of the sewage on an ultrafiltration membrane is reduced, and the sewage filtering effect is influenced. The sewage purification structure is characterized in that the sewage purification device comprises a first case pipe, a second case pipe, the ultrafiltration membrane, a air blowing device and a spray head, wherein the spray head is connected with a sewage inlet pipe; the air blowing device comprises a wheel disc and a plurality of fan blades; the wheel disc is in a circular tube shape and is rotationally arranged in the first case pipe; thespray head is arranged inside the wheel disc; the plurality of fan blades are arranged on the inner wall of the wheel disc in the circumference direction and are arranged around the spray head; a gapis formed between the fan blades and the spray head; the first case pipe is provided with a first case plate forming the self inner wall; the first case pipe is a vibration plate and is positioned atthe downstream side of the air blowing device; the spray head is arranged in a way of facing the first case plate, so that water sprayed out from the spray head collides with the first case plate.

The invention discloses an underwater engineering conveying belt and particularly relates to a maintenance-free (in terms of the lifetime of the conveying belt) underwater conveying belt capable of diving deeply (the water depth can exceed one thousand meters). The conveying belt is composed of an underwater conveying belt structure and a special underwater dragging motor. Firstly, the underwaterdragging motor vertically drives an underwater conveying belt (11) to horizontally operate, and driving is achieved in a gearbox mutual perpendicular toothing connection reversing mode; and secondly,according to the structure of the underwater dragging motor, at least a rotor (2) is wrapped with a metal seal isolating shielding cavity in a vertical mode, and in addition, a rotary shaft (6) capable of penetrating through a motor shaft seal (7) downwards and a filling nozzle (D) arranged directly or through a pipe coupling are arranged at the bottom of the metal seal isolating shielding cavity.All spicing gaps related to the metal seal isolating shielding cavity are connected through a detachable welding technology. According to the underwater engineering conveying belt, the aggregated duration for one-time underwater working and idling of the conveying belt can generally reach up to more than 15 years or even reach up to 50 years or more.

The invention discloses a dragging motor of waterproof sealing using oil liquid jacking and capable of deep diving and free of maintenance and applied to a simple underwater device. A rotor (2) is atleast surrounded by a wide-type metal sealing isolated shield (5) in a three-dimensional form, and a motor shaft seal (7) capable of downwardly penetrating a rotary shaft (6) is arranged at the bottomof the wide-type metal sealing isolated shield (5); an oil liquid S fills the wide-type metal sealing isolated shield (5); the connection of all splicing gaps for the wide-type metal sealing isolatedshield (5) is realized through a non-removable welding technology; the dragging motor is applied to other underwater devices in the vertical direction underwater through positioning of a mounting plate frame (W) connected with the motor; and the oil liquid is a light oil liquid S of a low freezing point less than 0 DEG C. The accumulated duration of one-time operation and idleness of the draggingmotor under the water generally can be more than 15 years, and may even reach 50 years or more.

The invention discloses an environment-friendly degradable slow-release fertilizer coating agent and a preparation method thereof. The environment-friendly degradable slow-release fertilizer coating agent is prepared from the following raw materials in parts by weight: 15 to 25 parts of diatomite, 10 to 20 parts of polyvinyl alcohol, 10 to 25 parts of ethyl acetate, 10 to 20 parts of methyl methacrylate, 10 to 20 parts of chitosan, 15 to 25 parts of water, 5 to 10 parts of starch and 8 to 16 parts of cross-linking agent. The coating agent disclosed by the invention can form a macromolecular degradable microporous membrane outside an auxiliary material, and the release speed of the fertilizer is controlled according to the field environment difference, so that the effects of environmental protection, degradability and slow release are achieved.

The invention discloses a motor stator non-removable underwater engineering conveying belt. The underwater engineering conveying belt can dive to depth of thousands of meters and is free of water seepage drainage at regular intervals and free of maintenance, and is composed of an underwater conveying belt structure and a special underwater dragging motor, wherein 1, a transmission mode of underwater dragging motor (11) horizontal operation vertically driven by the underwater dragging motor is performed, a vertical bevel gear and an end transverse bevel gear are transmitted in a reversing modeof mutual and vertical tooth connection through a gear box; 2, the structure of the underwater dragging motor is performed, a stator (1) and a rotor (2) are surrounded by a metal sealing isolation shielding cavity in a three-dimensional form, and the bottom of the metal sealing isolation shielding cavity is provided with a rotating shaft (6) which can penetrate a motor shaft seal (7) downwards andan oil filling nozzle (D) which is connected or directly arranged through a pipe; and all the splicing gaps involved in the metal sealing isolation shielding cavity are realized through connection ofa non-removable welding process. According to the motor stator non-removable underwater engineering conveying belt, the accumulated time duration of underwater one-step working and idle operation canbe generally 15 years or above, or even 50 years or above.

The invention provides a backwashing type high-pressure reverse osmosis membrane filtration system, belonging to the technical field of water treatment. The invention aims to solve various problems such as concentration polarization and pollution generated in a high-pressure reverse osmosis membrane filtration process. The backwashing type high-pressure reverse osmosis membrane filtration system comprises a high-concentration brine tank, a high-pressure pump, pressure gauges before and behind reverse osmosis membrane reactors, a rear pressure regulator and a flowmeter. In a normal filtering process, the reverse osmosis membrane filtration system normally runs (wherein a high-pressure reverse cleaning route is in a closed state); and when a flux is obviously reduced due to pollution, the high-pressure reverse cleaning system is opened, high-concentration saline water is injected into the water inlet side of the reactor, and the generated osmosis pressure exceeds the pressure of a high-pressure water pump, so filtered water reversely flows, and the effect of backwashing a membrane is achieved. The backwashing type high-pressure reverse osmosis membrane filtration system is applied to the field of water treatment.

The invention discloses a self-priming semi-permeable membrane drainage network, which comprises PVC pipes connected vertically and horizontally; One end is opened as a liquid injection port; a number of permeable holes are opened on the PVC pipe, and the outer surface of the PVC pipe is wrapped with a semi-permeable membrane. It also discloses the implementation method of the self-priming semi-permeable membrane drainage network, relying on the osmotic pressure of the solution inside and outside the PVC pipe, so that the water in the soil passes through the semi-permeable membrane and enters the pipeline to be discharged, and multiple PVC pipes drain at the same time, increasing the drainage area. The drainage process is simple and efficient, saving manpower and material resources, and the drainage efficiency is high, which effectively promotes the increase of the bearing capacity of the foundation. And there is no dust pollution in the process of rapid water reduction, the used sulfurous acid pulp waste liquid is non-toxic, highly viscous, not easy to seep out from the semi-permeable membrane, has good osmotic pressure, and meets environmental protection requirements.

The invention relates to a high-temperature and high-pressure true triaxial direct shear fracture-seepage coupling test device. Two first indenters and two pressure components are arranged above and below the rock sample in a manner symmetrical to the center of the rock sample. The two second indenters are arranged on the left and right sides of the rock sample in a symmetrical manner with respect to the center of the rock sample. The first indenter includes a first indenter main body provided with a groove. A part of the pressure component is accommodated in the groove. The pressure component includes a rubber bladder and a backing plate, and the rubber bladder applies pressure to the rock sample through the backing plate. The seepage medium in the first seepage network groove provided on the main body of the first indenter and the second seepage network groove provided on the backing plate applies osmotic pressure to the rock sample. The triaxial testing machine applies lateral confining pressure, axial pressure and high temperature to the rock sample. The beneficial effect is that the test device is combined with a triaxial testing machine, can carry out a true triaxial direct shear fracture seepage test on a rock sample under high temperature and high pressure conditions, and has high practicability and reliability.

The invention relates to a high-efficient sewage filtering device, which relates to the technical field of sewage treatment, and mainly aims to solve the technical problems that since an existing spray head is arranged on the downstream side of a fan, the pressure enabling sewage to permeate from an ultrafiltration membrane is reduced, and a sewage filtering effect is influenced. The invention mainly adopts the technical scheme that the high-efficient sewage filtering device comprises a first shell pipe, a second shell pipe, an ultrafiltration membrane, an air blowing device and a spray head for being connected with a sewage inlet pipe, wherein the air blowing device comprises a wheel plate and multiple fan blades; the wheel plate is in a cylindrical shape and can be rotatably arranged inthe first shell pipe; the spray head is arranged in the wheel plate; the multiple fan blades are arranged on an inner wall of the wheel plate along a circumferential direction and arranged surroundingthe spray head; a clearance is reserved between the fan blades and the spray head; the first shell pipe is provided with a first shell plate forming the inner wall of the first shell plate; the firstshell plate is a vibration plate and is located on the downstream side of the air blowing device; the spray head is arranged facing the first shell plate, so that water sprayed by the spray head impacts the first shell plate.

Disclosed are a driving motor for diving apparatuses realizing waterproof sealing by jacking of oil, capable of deep diving and free of maintenance for water seepage elimination and a using method thereof. In structure, at least a rotor (2) is surrounded by a narrow metal seal isolation shield (4) or a wide metal seal isolation shield (5) in a three-dimensional form, and all splicing gaps are connected by an irremovable welding process; and moreover, oil (s) is injected into the whole machine through an oil filling nozzle (D) at the bottom, and a detachable gap in any shape or a barrier layercomposed of a non-metallic macromolecule material cannot be formed in the structure in which a power cable penetrates the driving motor from the top or periphery. During use, the rotation in other directions must be driven on the basis of the positioning of the vertical direction, and the driving motor can be put into normal use only after the completion of a consolidation procedure for the injection of oil (s) into the driving motor is confirmed. The cumulative duration of underwater one-off work and idleness of the driving motor can generally be more than 15 years, or even 50 years or more.

The invention relates to a purification device for sewage filtration, and relates to the technical field of sewage treatment. The main purpose is to solve the problem that the existing nozzle is arranged on the downstream side of the fan, which causes the pressure of sewage to permeate from the ultrafiltration membrane to decrease and affects the sewage filtration effect. technical issues. The main technical solution is: a purification device for sewage filtration, which includes a first shell tube, a second shell tube, an ultrafiltration membrane, a blowing device, and a nozzle connected to a sewage inlet pipe; the blowing device includes a wheel and a A plurality of fan blades, the wheel disc is cylindrical and rotatably arranged in the first casing; the nozzle is arranged inside the wheel disc, and the plurality of fan blades are arranged on the inner wall of the wheel disc along the circumferential direction and arranged around the nozzle, There is a gap between the fan blade and the spray head; the first shell tube has a first shell plate forming its own inner wall, the first shell plate is a vibrating plate, and is located on the downstream side of the blowing device; the spray head is arranged towards the first shell plate, so that the spray head sprays The outgoing water hits the first shell plate.

The invention discloses a method for producing an attapulgite ceramic pressing process forming blank, which is technically characterized by comprising the steps of: mixing ingredients of the attapulgite ceramic pressing process forming blank and then crushing, adding the crushed mixture in a soaking tank for soaking with water and carrying out sodium treatment, pressing the mixture subjected to soaking and sodium treatment into a sheet, extruding the sheet into a strip, airing and then grinding, removing iron from powder, inputting the powder in a stirrer, adding water for stirring, and uniformly stirring to form a finished product of the attapulgite ceramic pressing process forming blank. The attapulgite ceramic pressing process forming blank comprises attapulgite clay, white bentonite, kaolin, calcined clay, sodium metasilicate and sodium carbonate. The attapulgite ceramic pressing process forming blank has low water content and is compact, has the advantages of better caking property, plasticity, high yield value and large extension deformation, and is suitable for forming and producing ceramic products by adopting a pressing process.

The invention discloses a preparation method for special syrup for caramel treats. The preparation method comprises the following steps: (1) performing chromatographic separation, namely pumping glucose mother liquor discharged after separating crystal glucose into a chromatographic separation system, performing chromatographic separation to prepare glucose AD liquor and glucose BD liquor, and taking the glucose AD liquor as a raw material for preparing the special syrup for the caramel treats; (2) performing ion exchange; (3) concentrating; (4) isomerizing, namely pumping concentrated liquor prepared in the step (3) into an isomerizing front tank; (5) mixing, namely mixing an isomerized material with the glucose BD liquor prepared in the step (1) to prepare mixed liquor; (6) decolorizing and filtering; (7) performing ion exchange; (8) concentrating to prepare the special syrup for the caramel treats. The glucose BD liquor retains maltose in the BD liquor in a preparation process of the special syrup for the caramel treats, so that the syrup has an aroma of malt; in addition, the syrup contains part of oligosaccharides and has a healthcare effect of multiplying good bacteria in human intestinal tract.