120results about How to "Small pressure loss" patented technology

The invention belongs to the technical field of power station boiler waste heat recycling energy-saving equipment and relates to a plate-and-shell type coal economizer. The plate-and-shell type coal economizer comprises a corrugated plate heat exchange core body (1), a heat exchanger shell (2), a first and a second water inlet / outlet water tank (3, 3') and a first and a second exhaust gas inlet / outlet pipeline (4, 4'), wherein the corrugated plate heat exchange core body (1) is mounted in the heat exchanger shell (2), the first and second water inlet / outlet water tanks (3, 3') are respectively arranged at the upper and lower ends of the front side of the corrugated plate heat exchange core body (1), and the first and second exhaust gas inlet / outlet pipelines (4, 4') are respectively arranged at the upper and lower sides of the corrugated plate heat exchange core body (1). The plate-and-shell type coal economizer solves the problem that the length of a water passage needs to be increased to solve the problem of unapparent water heating due to the great difference between an exhaust gas density and a water density, and meanwhile, a corrugated passage at the exhaust gas side enables the exhaust gas flow turbulivity to be increased and the heat transfer efficiency to be improved; the blockage due to ash accumulation happens rarely, even if the ash is accumulated, the cleaning is easy to finish.

The invention relates to the technical field of assembling tools, and discloses a push rod assembly assembling tool which comprises a tool containing base, a mounting groove is formed in the surface of the tool containing base and used for being clamped into a table, the tool adopts a three-in-one integrated design, a push rod assembly is divided into three parts of assembling procedures, the assembling procedures are completed on the same tool containing base in a centralized mode, and the assembling efficiency is improved. The first assembling part is arranged along the Y axis and can synchronously complete pretreatment assembling of multiple sets of guide rod assemblies, the second assembling part arranged along the X axis is matched with the extrusion assembly to achieve pressing-in operation of a plastic cover, the third assembling part is arranged along the Z axis, assembling of a gear and a cover body assembly in a push rod shell assembly is achieved, the transfer time between procedures is greatly shortened, and the connection cost is greatly reduced. And through integrated layout, precise positioning and convenient operation design, the production efficiency is remarkably improved, the product quality is effectively guaranteed, and the labor and equipment investment cost is reduced.

The application discloses a parallel flue gas cooling heat exchanger and relates to the technical field of heat exchangers. The parallel flue gas cooling heat exchanger comprises a flow regulating mechanism and parallel heat exchange pipes installed in the middle of the flow regulating mechanism. A cleaning mechanism is arranged outside the flow regulating mechanism, and a rotating rod is arranged inside the cleaning mechanism. The flow regulating mechanism comprises a flow regulating pipe. An adjusting conical groove is formed in the inner side of the end of the flow regulating pipe. A limiting support is fixedly installed inside the flow regulating pipe. A plurality of limiting sliding rails are slidably connected to the inside of the limiting support. The size of the cooling water flow in each parallel heat exchange pipe is controlled, the water flow in each parallel heat exchange pipe is substantially equal, the cooling water in each parallel heat exchange pipe can be fully exchanged with high-temperature flue gas, insufficient heat exchange caused by insufficient flow of some parallel heat exchange pipes is avoided, the overall heat exchange efficiency can be increased by more than 15%, and the flue gas cooling effect is uniform and stable.

This invention provides a coolant flow channel plate, relating to the technical field of vehicle thermal management. It includes a cover plate fixed to the top of a main board, with the main board and cover plate welded together at their side edges to form an internal flow channel cavity. The cover plate has refrigeration unit inlet / outlet assemblies on its surface. The main board has, from left to right, a heater pump mounting port, a battery pump mounting port, and a motor pump mounting port. The circuits between the heater pump and battery pump mounting ports, and between the heater pump and motor pump mounting ports, within the internal flow channel cavity are each equipped with a first anti-heat-spreading section. The circuit between the motor pump and battery pump mounting ports forms a variable-diameter section, with a second anti-heat-spreading section at its front end. A guide section is provided on the circuit of the battery pump mounting port. This invention solves the problem of lacking anti-heat-spreading structures at the connection points of circuits in different temperature ranges, achieving the technical effects of reducing vehicle weight, reducing vehicle connection piping, reducing heat loss in the thermal management system, and improving thermal management efficiency.

The invention relates to a device (10) for providing air into a combustion furnace (18), the device (10) comprising: a sleeve (11) enclosing a distribution chamber (20) and a feed duct (21) extending outwardly from the distribution chamber (20); an inlet (12) for receiving air from an air source into the distribution chamber (20); an outlet (13) located at the end of the feed duct (21) for discharging air from the inside of the sleeve (11); an inlet valve (19) arranged at the inlet (12) and adjustable to control the air entering the distribution chamber (20) through the inlet (12); a damper (14) arranged within the feed duct (21) and movable from a restricted position to an open position, or to a position between them, to regulate the flow of air discharged through the outlet (13). In the device (10) according to the invention, the damper (14) comprises a first flow-limiting element (15a) and a second flow-limiting element (15b), which are arranged one above the other and at a distance from one another in the feed duct (21), the first flow restriction element (15a) and the second flow restriction element (15b) are arranged such that at least a portion of the air flowing from the distribution chamber (20) to the feed duct (21) can flow through a gap (GP) between the first flow restriction element (15a) and the second flow restriction element (15b) to the outlet (13). The invention also relates to a combustion furnace (18) and to a method for providing air into a combustion furnace (18).

This invention provides a hydraulic control system for a concrete placing boom, comprising a hydraulic oil tank, an oil supply pump unit, a main hydraulic pressure pipeline, a main return hydraulic pipeline, and at least one hydraulic actuator unit. The oil supply pump unit is located on the main hydraulic pressure pipeline. Each hydraulic actuator unit includes a hydraulic cylinder and a control valve assembly. The control valve assembly is located close to the hydraulic cylinder, or integrated onto the hydraulic cylinder. The control valve assembly includes a main directional valve, a standby directional valve, and a balance valve assembly. The inlet ports of the main directional valve and the standby directional valve are respectively connected to the main hydraulic pressure pipeline. The return ports of the main directional valve and the standby directional valve are respectively connected to the main return hydraulic pipeline. The outlet ports of the main directional valve and the standby directional valve are respectively connected to the hydraulic cylinder via the balance valve assembly. This invention also provides a control method for the hydraulic control system of the concrete placing boom and a concrete placing boom device.

The application discloses a kind of air-cooled fuel cell humidification systems and its control method, solve the problem of air-cooled stack humidification system structure complex, uneven gas intake in prior art.The application includes humidification cavity with water injection port and gas outlet;First homogenizing cavity is used to flow through gas and guide;Second homogenizing cavity is arranged on the first homogenizing cavity;Fan is arranged on the first homogenizing cavity for conveying gas into the first homogenizing cavity;Moisture guide mechanism one end is connected with gas outlet, the other end is connected with the first homogenizing cavity;Air-cooled stack is arranged on the second homogenizing cavity gas outlet end;Controller is connected with fan, moisture guide mechanism and air-cooled stack respectively.The application is controlled by fan, moisture guide mechanism, air-cooled stack and controller cooperation, controller controls the operating power of fan and moisture guide mechanism according to the power of air-cooled stack, to control the humidification amount of air-cooled stack, reduce the performance attenuation of air-cooled stack, improve the stability of air-cooled stack.

The utility model relates to an ultrasonic gas meter flow regulator. The flow regulator is characterized in that the flow regulator is mounted at a flow channel air inlet of the flow channel and sequentially comprises a scattering layer, a developing layer and a rectifying layer which are integrally formed through injection molding or are assembled and connected in a split manner. The utility model aims to change the original gas flow field distribution, stabilize the flow field characteristics of the metering module and improve the metering precision of the ultrasonic gas meter, and has the characteristics of strong adaptability, convenience in installation and positioning, good flow field stability, high precision and the like.

This application belongs to the field of aero-engine technology, and specifically relates to a method and apparatus for simulating aircraft bleed air during sustained test of a turbofan engine, wherein the inlet temperature T1 and inlet pressure P1 of the engine are preset to a range; Step S2: Calculate the aircraft bleed air volume W fy The range, the total bleed air temperature T of the aircraft fy The range and total bleed air pressure P fy Range; Step S3: Calculate the cold diameter D of the bleed air nozzle. fy Range; Step S4: Select the cold-state diameter D of the bleed air nozzle fy An aircraft bleed air volume verification test was conducted to obtain the bleed air volume W for the test. fyr When the induced draft volume W in the experiment fyr The requirements are met, and the cold-state diameter D of the expiratory air nozzle is adopted. fy When the induced draft volume W in the experiment fyr If the requirements are not met, return to step S4; ensure that the calculation error of the aircraft bleed air volume is within the required range, and obtain the actual bleed air volume of the engine in various states to the maximum extent through test program design. This test method has the advantages of simple test method, low test cost and high replacement efficiency.

The invention discloses an ammonia gas catalytic cracker. The cracker comprises a shell and a corrugated coil pipe in the shell, a separation blind plate is arranged in the shell and is parallel to the bottom surface, and the internal space is divided into an upper half area and a lower half area; the corrugated coil pipe repeatedly penetrates through the separation blind plate; the pipe section, located above the separation blind plate, of the corrugated coil pipe is filled with an ammonia catalytic cracking catalyst, and the pipe section, located below the separation blind plate, of the corrugated coil pipe is not filled; an air inlet and an air outlet are formed in the two sides of the upper half area of the shell respectively, and a flue gas inlet and a flue gas outlet are formed in the two sides of the lower half area of the shell respectively; wherein the air inlet and the flue gas outlet are on the same side, and the air outlet and the flue gas inlet are on the same side; an inlet of the corrugated coil is connected with an ammonia pipeline, and an outlet is connected with a cracking gas pipeline. Part of ammonia gas is pre-cracked by utilizing the ammonia gas cracking catalyst, and heat is provided for cracking reaction in the corrugated coil pipe by utilizing flue gas waste heat, so that the adjustment of the combustion property of fuel gas is realized, and the possibility is provided for reducing fuel type NOx.

The utility model discloses a kind of transverse three-cavity suction muffler, belong to refrigerator compressor technical field, including first shell and second shell, first shell connects first, second baffle, and the closed structure is spaced into first, second, third chamber along horizontal direction arrangement;Third chamber is between first chamber and second chamber;First shell is equipped with first, second, third flow guide pipe, first flow guide pipe is communicated with air inlet and first chamber, second flow guide pipe is communicated with first chamber and second chamber, and third flow guide pipe is communicated with second chamber and third chamber;Second chamber is connected with arc flow guide plate, and arc flow guide plate is towards second flow guide pipe and third flow guide pipe;Fourth flow guide pipe is equipped in third chamber and tightly first baffle, fourth flow guide pipe is communicated with third chamber and discharge port, and third flow guide pipe end top surface extension line is flush with fourth flow guide pipe bottom end. Solve the angle formed between different flow guide pipes in prior art, there is the problem of large local pressure loss.

The collector for the EGR cooler comprises an air outlet section, a collecting section and a connecting section, the air outlet section, the collecting section and the connecting section are sequentially connected, and the air outlet section, the collecting section and the connecting section are of an integrated structure. The air outlet section is cylindrical, and the connecting section is of a rectangular structure; an arc-shaped transition structure is arranged at the joint of the collecting section and the air outlet section, an arc-shaped transition structure is also arranged at the joint of the collecting section and the connecting section, and a temperature sensor interface and a differential pressure sensor interface are arranged on the collecting section. The cooler has the technical effects that the cooler can be formed by punching a thin plate, the wall thickness is small, the weight is light, the structure is simple, batch production can be realized, the manufacturing cost is low, arc-shaped transition structures are arranged at the joints of the sections, an internal airflow channel is smoother, the advancing resistance of waste gas in the using process is small, the pressure loss of the cooler can be reduced, and the conveying of the waste gas is facilitated; the collecting section is provided with a temperature sensor interface and a differential pressure sensor interface, so that a temperature sensor and a differential pressure sensor can be connected conveniently.

The application relates to an aerodynamic profile suitable for a wind tunnel and a design method thereof, and belongs to the technical field of aviation aerodynamic wind tunnel tests. The front end surface of the aerodynamic profile is a square section, the rear end surface of the aerodynamic profile is a circular section, the middle part of the aerodynamic profile is a transition section, and the front and rear sections are connected through the change of the section shape from front to back. The research and development purpose is to provide a novel aerodynamic profile design method for the transition from a square section to a circular section, the flow field can be smoothly transitioned from a square to a circle, the influence on the flow field quality is minimized, the pressure loss is reduced, and the method of rounding the right angle and gradually increasing the rounding radius is adopted to realize the smooth transition from the square section to the circular section. The circular arc curve is gradually lengthened, the right angle side is gradually shortened, and finally the profile line is completely changed into a circular shape. The transition mode is natural and smooth, the change is gentle, the aerodynamic performance is good, and the interference on the flow field due to the change of the section shape can be obviously reduced.

This invention discloses a nitrogen-driven pneumatic directional drilling equipment for downhole cuttings removal in soft coal seams, comprising a nitrogen drive mechanism and a directional drilling rig. The directional drilling rig has a directional drill string assembly structure, which includes a drill rod. A probe outer tube is coaxially sleeved inside the drill rod, and a measuring probe is coaxially sleeved inside the probe outer tube. The measuring probe is used to measure the gas flow rate and pressure in the borehole. An annular downward air chamber for nitrogen gas flow is formed between the inner wall of the probe outer tube and the outer wall of the measuring probe. An air inlet is opened on the outer wall of the drill rod at the lower part, and an annular upward air chamber for nitrogen gas flow is formed between the inner wall of the drill rod above the air inlet and the outer wall of the probe outer tube. A trumpet-shaped wind shield, wider at the bottom and narrower at the top, is connected to the outer wall of the drill rod above the air inlet. This invention also discloses a corresponding borehole cuttings removal method. This invention significantly reduces the resistance to airflow, achieving faster drilling speeds and removing more cuttings under the same air volume and pressure.

The utility model relates to the technical field of cleaning, in particular to a water treatment system and device.The water treatment system comprises a water flow channel, a weakening module, an ozone generation module and a micro-nano bubble generation module which are sequentially arranged in the water flow direction of the water flow channel, the alkalescence module can make water become alkalescent, and the micro-nano bubble generation module can generate micro-nano bubbles into the water flow channel, so that ozone generated by the ozone generation module can be stored in the micro-nano bubbles. According to the utility model, water can be weakly alkalized, and the solubility of ozone in water can be increased through the cooperation of the micro-nano bubble generation module and the ozone generation module, so that the sterilization and decontamination capabilities are improved.

This utility model relates to a gas cooling and scrubbing tower, belonging to the field of gas purification technology. It includes a tower body, an air inlet, an air outlet, and a liquid outlet, located on the side, top, and bottom of the tower body, respectively. Between the air inlet and outlet within the tower body's internal cavity, a first spray device, a uniform flow water curtain layer, and a second spray device are sequentially arranged from bottom to top. The uniform flow water curtain layer includes a uniform flow water curtain baffle, and a water curtain regulating component is arranged above the baffle. This utility model utilizes the uniform flow water curtain baffle and the second spray device to repeatedly deflect, mix, cool, and scrub dust-laden gas, solving the problems of gas flow deviation, poor cooling and scrubbing effects in existing hollow cooling and scrubbing towers. It has the advantages of high scrubbing efficiency, low resistance, no clogging, simple structure, and easy maintenance.

The utility model relates to the technical field of refrigeration equipment, in particular to an air conditioner refrigeration throttling device. The pipe body is composed of a liquid inlet section, a throttling section and a liquid outlet section, the inlet of the liquid inlet section is provided with a filter screen, the middle of the liquid inlet section is provided with a throttling core for controlling flow, the throttling section comprises a throttling piece for accurately adjusting the flow, the inner diameter of the liquid outlet section is gradually increased, the flow velocity of fluid can be reduced, and pressure loss can be reduced; the tail end separating plate is provided with separating holes and liquid discharging grooves for further separating gas and liquid, buffering cavities are formed between the spiral blades and the separating plates, and connector threads are formed in the two ends of the pipe body. According to the device, through the gradually-expanding design of the inner diameter of the liquid outlet section and the synergistic effect of the flow guide blades, the spiral blades and the separation plates in the liquid outlet section, the effects of reducing the flow speed of a refrigerant and enhancing gas-liquid separation are achieved, and the overall efficiency and stability of a refrigerating system and the heat exchange efficiency of an evaporator are improved; the stable and efficient operation of the equipment is ensured; and the service life is prolonged.

This invention discloses a side-cooled gas turbine transition section and a gas turbine. The side-cooled gas turbine transition section includes an outer shell, an inner shell, and a baffle member. The inner shell is fitted inside the outer shell and spaced apart along the inner and outer directions to form airflow channels. The outer shell has an air inlet communicating with the airflow channels, so that cooling air flows into the airflow channels through the air inlet to reduce the temperature of the inner shell. The outer shell has a mounting hole penetrating the outer shell along its thickness direction, communicating with the airflow channels. The baffle member is disposed in the mounting hole to agitate the airflow flowing into the mounting hole. The ratio of the surface area to the volume of the baffle member is A1, and the ratio of the area to the volume of the sidewall of the mounting hole is A2, where A1 is greater than A2. At least a portion of the baffle member is located within the airflow channels and connected to the outer peripheral surface of the inner shell to improve the heat transfer coefficient of the inner shell. The side-cooled gas turbine transition section of this invention has the advantages of simple structure and good cooling effect.

The utility model discloses a hydraulic motor driving type wind power negative pressure seeding machine which comprises a bearing frame, two fans are installed at the lower end of the bearing frame, one end of each fan is connected with a hydraulic driving mechanism, the other end of each fan is connected with an air inlet pipe, and the air inlet pipe is connected with an air outlet pipe. The upper end of the air inlet pipe penetrates through the side wall of the bearing frame and extends to the upper end of the bearing frame, the upper end of the air inlet pipe is connected with a spiral air inlet structure, the middle of the air inlet pipe is connected with a discharging mechanism, and a filtering device is installed on the air inlet pipe. The hydraulic drive fan is matched with a hydraulic drive fan system of a high-horsepower tractor, protection on the hydraulic motor and turbine blades can be greatly improved in a sand and dust environment, the filtering effect can be improved, the service life of a hydraulic motor sealing piece and the service life of the turbine blades can be prolonged, and meanwhile cleaning is convenient and fast.

An air filter media is provided, comprising multiple layers of nonwoven fabric, with a performance index of 0.023 or higher. At least one layer of the nonwoven fabric contains at least two types of organic fibers, A and B, with different fiber diameters. The average fiber diameter of organic fiber A is 0.01–0.60 μm, and the average fiber diameter of organic fiber B is 1.0–30 μm. This provides an air filter media suitable for air filters that combine high capture efficiency with low pressure loss.

The flow detection device comprises a shell, an airflow channel is arranged in the shell, and an air resistance structure is arranged in the airflow channel so that the airflow channel can be divided into an air inlet section located on one side of the air resistance structure and an air outlet section located on the other side of the air resistance structure. The air resistance structure is at least provided with a ventilation grid part in the middle area of the airflow channel, the shell is provided with a detection opening corresponding to the air inlet section and provided with a detection pipe extending into the air outlet section corresponding to the air outlet section, and the tail end of the detection pipe extends to the ventilation grid part to detect airflow passing through the ventilation grid part. The ventilation grating part is separated to form a plurality of airflow passing ports arranged in an array mode, airflow can be divided into a plurality of strands to pass through when passing through, the stability of the flow state of the airflow can be guaranteed, and the airflow can pass through the detection pipe in the air outlet section in a laminar flow state. The detection pipe can cross a viscous area close to the channel wall to directly detect the airflow in the central area of the airflow channel.

The present invention discloses a flow channel assembly for a membrane element, the flow channel assembly comprises: a flow channel element, the flow channel element is concaved inwards to form a plurality of concave structures and is convex outwards to form a plurality of convex structures, and the plurality of concave structures and the plurality of convex structures are distributed in a staggered manner; the flow channel element comprises a water inlet section, a transition section and a water outlet section in the first direction, and the density of the multiple concave structures and the density of the multiple convex structures are gradually increased in sequence along the water inlet section, the transition section and the water outlet section. Through the gradient design that the density of the concave-convex structures of the water inlet section, the transition section and the water outlet section is gradually increased, water flow resistance at the water inlet end is reduced, pressure loss is reduced, and it is guaranteed that water flow enters rapidly and stably; the transition section realizes stable transition of water flow from a low-resistance state to a high-turbulence state and prevents the water flow from impacting the surface of the membrane; the high-density concave-convex structure at the water outlet end generates strong turbulence to effectively scour a concentration polarization layer on the surface of the membrane, low resistance and high turbulence are both considered, the scale deposition risk is reduced, and the service life of the membrane element is prolonged.

The utility model relates to the technical field of cutter production, provide a kind of hard alloy cutter fine grinding tool, including bottom plate, the bottom plate is provided with polishing part, the bottom plate is provided with clamping assembly, the clamping assembly is used to clamp workpiece to be processed;The polishing part includes installation part and polishing part, one end of the installation part is fixedly connected with one end of polishing part, one side of the polishing part is set as cambered surface, the projection of the cambered surface is towards the recess of workpiece to be processed and is set;The end of the installation part away from polishing part is provided with sliding portion, the sliding portion is slidably arranged on the bottom plate along the length direction of bottom plate, the length direction of the polishing part is parallelly arranged with the length direction of bottom plate, the utility model can improve the processing effect of double-end hard alloy cutter bottom burr.

The application discloses a nozzle and belongs to the technical field of fluid injection equipment. The nozzle comprises a nozzle body, a first cavity, a second cavity and a third cavity which are sequentially arranged in the nozzle body, the diameters of the three cavities are sequentially reduced, and steps are arranged between adjacent cavities. The second cavity is provided with an injection cylinder, and the first cavity is provided with a compression ring. The injection cylinder is provided with a second channel, an outer side wall is provided with a third channel, the two channels are communicated through a through hole, and an extension part with a fluid outlet and a guide inclined surface is arranged at the end. The application can reduce pressure loss, improve injection stability and uniformity, is convenient to install, and has a long service life.

The present application relates to the technical field of curtain wall construction, and particularly relates to a curtain wall transfer floor vertical keel elevation fine adjustment device and a construction method. The present application comprises a fixing assembly, an adjusting assembly and a receiving assembly, the fixing assembly and the receiving assembly are respectively arranged at two ends of the fixing assembly, the fixing assembly is clamped on a building ring beam, the adjusting assembly and the receiving assembly are arranged on the outer surface of the building, a fine adjustment bolt is arranged on the fixing assembly, the fine adjustment bolt vertically contacts the top of the ring beam and is threadedly connected with the fixing assembly. The fixing assembly is used for fixing on the building structure, conveniently temporarily fixing the vertical keel, the adjusting assembly enables the present application to be applicable to the installation of vertical keels of various specifications, the receiving assembly is used for supporting the keel, conveniently installing the vertical keel, the fine adjustment bolt is used for finely adjusting the vertical installation position of the vertical keel, improving the keel installation precision, effectively reducing the alignment operation time in the basket during keel installation, and reducing the construction difficulty.

The utility model discloses a high-fluidity closed impeller, which relates to the technical field of impellers and comprises a first cover plate and a second cover plate. Main blades and auxiliary blades which are distributed in a radial mode are installed between the first cover plate and the second cover plate, the main blades and the auxiliary blades are distributed between the first cover plate and the second cover plate in a staggered mode, and the main blades and the auxiliary blades are each of an arc-shaped structure. The widths of the ends, close to the center of the first cover plate, of the main blades and the auxiliary blades are smaller than those of the ends away from the center of the first cover plate; and clamping blocks are fixedly connected to the tops and the bottoms of the main blades. According to the high-fluidity closed impeller, local contraction is formed at the tail end of the flow channel through the auxiliary blades distributed in a staggered mode, the pressure loss phenomenon caused by flow channel expansion is restrained by compressing the flowing space, and therefore pressure loss is reduced, fluid is forced to be attached to the surfaces of the blades again in the high-speed flowing process, and part of kinetic energy is converted into static pressure energy; and secondary pressurization is realized.

This invention provides a hydraulically controlled lift valve and hydraulic system with throttling control function. The hydraulically controlled lift valve includes a first connection port, a second connection port, an unloading valve, a main control valve, and a logic valve. When the main control valve is in the neutral position, the first connection port is connected to the unloading valve through the main control valve, and the second connection port is locked. When the main control valve is in the lifting position, the first connection port is connected to the second connection port, and the unloading valve is closed. When the main control valve is in the lowering position, the unloading valve can be opened. The valve core of the main control valve has a fixed throttling orifice and a variable throttling groove. This hydraulically controlled lift valve enables the load device to perform holding, lifting, and lowering actions; the main control valve can achieve throttling control, which can improve the valve's micro-control performance and ensure the safety of the machine; the unloading valve can be piloted by the main control valve to reduce pressure loss; the logic valve can be piloted by the main control valve, ensuring reliable operation.

The application discloses a novel biogas slurry membrane filtration device based on silicon carbide membranes, comprising: a silicon carbide membrane assembly, which is composed of four groups of membrane groups in parallel connection, and two ends of each group of membrane groups are connected with a shunt pipe and a collection pipe; each group of membrane groups comprises four silicon carbide tubular membrane tubes, and the four silicon carbide tubular membrane tubes are connected in series, each silicon carbide tubular membrane tube is provided with a plurality of large through-hole structures along the axial direction thereof, the diameter of the large through-hole structure is 8 mm, and the pore size of the membrane tube is 150 nm; and a cleaning assembly connected with the silicon carbide membrane assembly and used for cleaning the silicon carbide membrane assembly according to a preset mode. The application has stronger anti-clogging performance, is suitable for anaerobic biogas slurry treatment with high solid content and more organic fiber components, effectively alleviates the problems of scaling and fiber winding and clogging, and solves the problem of membrane strength through the thickening design of the membrane tube spacing.

The utility model relates to the technical field of building construction, in particular to a slurry beating device which comprises a slurry source, a slurry conveying pipeline used for conveying slurry and a slurry beating assembly used for beating the slurry on a wall. The output end of the soybean milk source is connected with the soybean milk beating assembly through the soybean milk conveying pipeline; the pulp beating assembly comprises a pulp beating plate and a cover plate, and a gap is formed between the pulp beating plate and the cover plate; the slurry overflowing pipeline is arranged in the gap, and a plurality of slurry overflowing holes are formed in the slurry overflowing pipeline; the slurry overflowing pipeline comprises a main slurry overflowing pipe and at least one branch slurry overflowing pipe, the main slurry overflowing pipe is communicated with the slurry conveying pipeline, and the branch slurry overflowing pipes are communicated with the main slurry overflowing pipe and are not parallel to the main slurry overflowing pipe; according to the cement slurry beating device, the uniformity of the slurry distributed in the gap between the slurry beating plate and the cover plate can be ensured, and the slurry beating effect is improved.

The utility model relates to anti surge valve technical field, especially in kind of quick release anti surge valve pipe connection subassembly, including main pipe, the quick release structure is movably sleeved in the right end of main pipe, the outer surface upper portion and outer surface lower portion of quick release structure all are connected with quick release buckle in screw thread, the left end edge of quick release structure is connected with a plurality of bolts in screw thread, the outer surface of a plurality of bolts all are connected with the nut in screw thread, the right end of quick release structure is fixedly connected with filter structure through bolt and nut, the utility model discloses a kind of quick release anti surge valve pipe connection subassembly, when disassembling, first remove the connection of downstream pipeline and downstream pipeline fixed flange, unscrew nut and bolt separate quick release structure and filter structure, then rotate quick release buckle and make it exit, finally quick release structure is taken off from main pipe, greatly simplify dismounting step, reduce the time and manpower needed for dismounting, improve maintenance efficiency, shorten the system downtime.