34results about How to "Increase the angle" patented technology

The spraying arm assembly comprises a rotatable spraying arm and a steering piece, the spraying arm comprises a first cover body and a second cover body, and the first cover body and the second cover body are combined in a covering mode to form a first flow channel and a second flow channel. The first cover body is provided with a first spraying opening communicated with the first flow channel and a second spraying opening communicated with the second flow channel, and the axis of the first spraying opening and the axis of the second spraying opening are obliquely arranged relative to the rotating axis of the spraying arm and are not located on the same plane. The inclination directions of the first spraying opening and the second spraying opening are opposite; the steering part is movably arranged relative to the spraying arm and provided with a communicating cavity, and the communicating cavity is provided with a first position communicating with the first flow channel and a second position communicating with the second flow channel. The spraying arm assembly and the dish-washing machine can solve the problem that a dish-washing machine in the prior art cannot thoroughly clean some areas of tableware.

The utility model relates to the technical field of landscaping machinery, in particular to a rotary adjusting type hedge trimmer which comprises a second rotary table, a bottom plate, a telescopic guide rod and a connecting rod, and a first driving mechanism and a second driving mechanism are arranged on the bottom plate; the end part of the probing guide rod is rotatably connected with a rotating block, the rotating block is fixedly connected with a movable rod, the end part of the connecting rod is rotatably connected with a head swinging guide rod, the end part of the head swinging guide rod is rotatably connected with the tail part of the movable rod, the front end of the movable rod is connected with a connecting frame, and the connecting frame is connected with a machine head for trimming; through cooperative control of the dual-driving mechanism, the axial displacement response speed of the machine head and the tail end positioning precision are improved, the comprehensive trimming efficiency is improved compared with that of a traditional single-degree-of-freedom machine, a three-dimensional polar coordinate motion system is constructed through cooperation of the machine head and the single-degree-of-freedom machine, multi-degree-of-freedom composite motion of the axial telescopic stroke, the pitching angle and the horizontal rotation angle is achieved, and the comprehensive trimming efficiency is improved. Millimeter-level shape control of complex curved surface modeling can be achieved, and the requirement for accurate forming of special-shaped hedges in landscape engineering is met.

The invention discloses a high-performance aluminum alloy friction stir welding seam quality detection device, and relates to the technical field of welding quality detection.The high-performance aluminum alloy friction stir welding seam quality detection device comprises a welding seam detection mechanism, a displacement mechanism is arranged at the top of the welding seam detection mechanism, a conveying mechanism is arranged at the bottom of the displacement mechanism, and clamping turnover mechanisms are arranged on the two sides of the conveying mechanism; the weld joint detection mechanism comprises a detector, visual probes are fixedly connected to the two sides of the detector, and an ultrasonic array probe is fixedly installed at the bottom of the detector. Through multi-direction and multi-angle adjustment, the detection angle is increased, the detection range is further increased, the detection effect is guaranteed, the detection efficiency is effectively improved, the overturning function is achieved through control of the overturning motor, a clamped object can be rapidly adjusted, and the detection efficiency is improved. And the multi-surface gap detection function can be realized.

The invention provides a display panel and a display device, and the display panel comprises a plurality of light-emitting elements which are arranged in an array; the pixel definition layer comprises a plurality of pixel definition holes which are arranged in an array mode, and the light-emitting elements are located in the pixel definition holes; the packaging layer is located on one side of the pixel definition layer, the packaging layer sequentially comprises a first inorganic layer, a light refraction layer and a second inorganic layer in the direction deviating from the pixel definition layer, the light refraction layer is provided with a plurality of refraction assemblies arranged in an array mode and a planarization layer, and the planarization layer is located between the first inorganic layer and the second inorganic layer. And at least part of the light emitted from the light-emitting element is reflected by the refraction assembly and then is emitted from the light-emitting surface of the display panel. The thickness of the display panel can be reduced, the large-viewing-angle brightness of the display panel is increased, and the large-viewing-angle color cast of the display panel is improved.

This invention provides a toy skeleton structure, wherein the torso adopts a segmented structure. Ball heads and spherical grooves are respectively provided on the opposite end faces of the first and second torsos. The first torso can be rotatably fixed to the second torso through the rotational engagement of the ball heads and spherical grooves. Simultaneously, the ball heads are connected to the end face of the first torso through a waist-shaped transition section, allowing the torso to rotate and perform small-amplitude swaying movements, thereby increasing the torso's range of motion and fluidity. This invention also provides an assembly mecha toy including the aforementioned toy skeleton structure. The toy skeleton structure provided by this invention has the advantages of simple and compact structure, fewer component parts, simple assembly operation, and easy management. It also has the advantages of multiple and smooth range of motion, ensuring high playability and interactivity for both the skeleton structure and the assembly mecha toy. Furthermore, the structural design of the toy skeleton structure allows its shape to more closely resemble a simulated human body structure.

The utility model belongs to the technical field of anti-dazzle lenses, and discloses a deep cover anti-dazzle lens which comprises a deep cover body, an installation base is installed at the top end of the deep cover body and used for being fixedly connected with an external bearing structure, and a lamp body is installed at the bottom end of the installation base and used for being fixedly connected with the deep cover body. A mounting groove matched with a lamp body for use is formed in the top end of the deep cover body, the deep cover body is of a cup-shaped structure, a light reflecting face is arranged on the inner side wall of the deep cover body, textures which are regularly distributed are arranged on the inner surface of the light reflecting face, and the outer surface of the deep cover body is connected with a lens mounting frame in a sleeved mode. The reflecting surface of the deep cover body is designed to be deepened and matched with the textures regularly distributed on the inner surface, under the synergistic effect of the reflecting surface and the textures, the included angle between the light emitting angle of the lens and the visual angle can be effectively increased, the anti-dazzle effect is remarkably optimized, meanwhile, the lens body made of the PMMA material is matched with the deep cover body made of the aluminum alloy material, and the anti-dazzle effect is improved. The optical transmission efficiency and the structural stability are both considered.

The utility model relates to the technical field of prison access control, and discloses a prison AB access door control device which comprises a protection box, a control assembly is movably installed on the top of the protection box, a buffering mechanism is installed at the bottom of the control assembly, the buffering mechanism comprises two supporting rods, and the two supporting rods are fixedly installed at the two ends of the bottom of the control assembly respectively. And two connecting rods are hinged to the bottoms of the two supporting rods correspondingly, sliding blocks are hinged to the bottom ends of the two connecting rods on the same supporting rod correspondingly, the sliding blocks are installed on the inner side of the protection box in a sliding mode, and buffering pieces are installed at the ends of the sliding blocks. According to the utility model, the control assembly can be buffered, so that the problem that the control assembly is damaged due to larger impact force can be avoided.

This invention provides a valve repair device, a valve repair system, and its operating method. The lifting components are all rigid structures, with the proximal end of each lifting component rotatably connected to the distal end of a stop structure. The distal end of each lifting component is rotatably connected to the distal end of a drive rod, allowing the shape of the lifting components to change through axial movement of the drive rod. This enables the lifting components to lift, clamp, and release chordae tendineae within a 0°–360° range, reducing the number of product specifications and significantly increasing the flexibility and convenience of the surgeon's operation. Furthermore, during surgery, if the valve repair device gets caught on the chordae tendineae, the flexible structure allows for a larger angle and smaller diameter in the open state, making release easier.

This invention relates to the field of coherent wind lidar technology, and discloses a passive solid-state beam scanning system based on wavelength tuning and dispersive grating coupling. A tunable laser unit outputs multiple narrow-linewidth lasers of different wavelengths; a beam-splitting modulation unit divides them into emitted light and local oscillator light, and pulse-modulates the emitted light; a dispersive grating scanning unit forms scanning beams with different exit directions from the emitted light of different wavelengths; a wavelength monitoring unit acquires the actual wavelength of the emitted light, and a grating state monitoring unit acquires the grating state parameters; a joint calibration and compensation unit determines the actual exit angle based on the actual wavelength of the emitted light and the grating state parameters, and determines the Doppler velocity conversion coefficient based on the actual wavelength of the emitted light; a coherent receiving and solving unit calculates the radial wind speed, and a wind parameter inversion unit inverts the wind parameter information. This invention can jointly correct the scanning direction and velocity conversion, improving the accuracy of wind parameter information inversion and long-term wind measurement stability.

The utility model relates to the technical field of robots, in particular to an industrial robot suitable for high-precision equipment production, which comprises a support plate and a clamping component, the clamping component is arranged at the bottom of the support plate, the clamping component comprises a mounting plate, the mounting plate is fixedly connected to the bottom of the support plate, and the mounting plate is fixedly connected to the bottom of the support plate. Two first mounting frames are fixedly connected to the front face of the mounting plate, and electric push rods are fixedly connected to the interiors of the first mounting frames. According to the industrial robot suitable for high-precision equipment production, when the industrial robot is used, and a camera recognizes products needing to be sorted, an electric push rod is started, so that the electric push rod can drive a second fixing frame to move upwards through a push rod, and a second connecting rod can pull clamping frames on the two sides to move towards the middle; and the clamping frame can clamp the products, so that the products can be sorted and transported, the sorting accuracy is guaranteed, the processing consistency is ensured, the device adapts to special environments, and management and monitoring are convenient.

The utility model discloses a kind of noise reduction structure of veterinary electric needleless injector;Including motor, oblique falling surface rotation worm, transmission bearing, spring connecting rod;Motor shaft is fixed with rotation worm, transmission bearing is tangent with the slope of rotation worm, transmission bearing is fixed with spring connecting rod.When motor rotates and drives worm to rotate, worm and bearing tangent move from low end to high end, spring connecting rod is moved back to compress spring simultaneously.When worm moves to the highest point, it is driven to fall by spring, the falling surface of this worm is small-angle slope, can effectively reduce the noise generated by spring kinetic energy too big under the premise of not affecting injector nozzle liquid outlet.Compared with prior art, the utility model has the following beneficial effects: the noise reduction mode of a kind of veterinary electric needleless injector proposed by the utility model increases a small-angle included angle to the falling surface of worm rotated by motor, can effectively reduce the noise generated when spring rebounds under the premise of not affecting nozzle liquid outlet.

The utility model discloses a columnar arrow target which comprises the following components: a filling body which is composed of at least one deformable material layer with energy absorption capability so as to form a solid structure which can be inserted by an arrow and can absorb kinetic energy; and the outer wrapping layer is composed of at least one flexible material layer which can be penetrated by an arrow, wraps the peripheral surface of the target body and forms a columnar target body. Due to the adoption of the columnar structural design, the rotating shaft can rotate by 360 degrees around the central shaft. When a certain surface of the target body is damaged due to repeated puncture of the arrow, the undamaged or lightly damaged area can be rotated to the front surface by rotating the target body and continues to serve as a receiving surface of the arrow. Compared with a traditional fixed target surface arrow target, the usable area and angle are greatly increased, and therefore the service life is prolonged.

The utility model relates to a kind of angle adjustable snow machine, with movable base, multiple rollers are equipped on movable base, snow making cylinder is equipped on movable base, the snow spraying end of snow making cylinder is equipped with water ring and multiple spray pipes, the snow spraying end of snow making cylinder is further equipped with air ring and multiple, air pipe, the tail end of snow making cylinder is equipped with air blower, adjusting assembly is equipped on movable base, adjusting assembly includes drive motor, rotating platform and rotating support, driving gear is fixedly arranged on connecting shaft, adjusting rotating rod is equipped on rotating platform, driven gear is equipped on the lower end of adjusting rotating rod, thread part is equipped on adjusting rotating rod, limit block is equipped on the top of adjusting rotating rod, transmission block is sleeved on thread part, threaded hole is equipped on transmission block, link is equipped on the side of transmission block, side edge sliding slot is equipped on the side wall of snow making cylinder, side edge sliding block is slidably arranged in side edge sliding slot, link is rotatably connected on side edge sliding block.The utility model structure is ingenious, convenient and practical.

The utility model discloses an intraoperative adjustable support for interventional operation, which comprises a support frame comprising at least two horizontal support rods arranged in an umbrella shape, a connecting rod comprising a head rod and a tail rod connected in an extendable manner, the support frame being connected to the top end of the head rod and being rotatable about the connecting rod, and a base provided on the bottom end of the tail rod, the base being detachably fixed to the bed plate of a treatment bed. The intraoperative adjustable support for interventional operation has the advantages of simple structure, reasonable design, quick installation, small folding space occupation and convenient storage. The support can provide sufficient operation space for the operator, avoid covering the patient's mouth and nose directly with thick sterile cloth, reduce the feeling of suffocation and asphyxia of the patient during breathing, ensure the emotional stability of the patient during the operation, facilitate the observation of the patient's intraoperative changes by the surgeon and the circulating nurse, and greatly improve the operation efficiency and safety.

This utility model relates to the field of incubation box technology, specifically an incubation box for raising seedlings of agricultural products. It includes a support frame with a fixing ring fixed in the middle, a sliding groove and a positioning groove on the inner wall of the incubation box body, a threaded sleeve rotatably connected to the end of a support sleeve, a movable block fitted on the outer surface of the threaded sleeve, a support plate connected to the outer surface of the movable block, and a rear support platform on the upper surface of the support plate. The beneficial effects are: rotating the rotating rod will cause the threaded sleeve to rotate, and when the threaded sleeve rotates, it will cause the movable block to move along the axis of the threaded sleeve. The movement of the movable block will increase the angle between the transmission plate and the axis of the threaded sleeve, causing the transmission plate to push the support plate upwards. The upward movement of the support plate will cause the rear support platform to move upwards along the positioning groove. When the rear support platform moves into the sliding groove, the rotating rod stops rotating. At this time, pulling the handle on the rear support platform will pull the rear support platform above the first row of support platforms, making it convenient for operators to pick up and place seedlings in the rear row.

The application discloses a millimeter wave radar-based super-resolution angle estimation method, which comprises the following steps: obtaining multi-element sampling data by receiving echo signals of a transmitting antenna by a receiving antenna; adding a Hanning window in a distance dimension and a speed dimension respectively; performing multi-channel non-coherent accumulation to improve signal-to-noise ratio; performing two-dimensional CFAR detection on the two-dimensional matrix data after non-coherent accumulation, performing CA-CFAR detection in the distance dimension and OS-CFAR detection in the speed dimension respectively, and obtaining matrix data containing a target; resolving and aggregating target points in a point trace condensation mode, so as to form a unique target point trace, and saving distance unit information and speed unit information of the target; and estimating a target azimuth by using an improved forward-backward Root-MUSIC algorithm on the multi-element data after compensation. The method considers that the forward-backward direction only uses the covariance matrix on the main diagonal line, and the application has a significant improvement in angle resolution and angle measurement accuracy.

The utility model relates to the technical field of dental restoration, in particular to a small drill pin for dental restoration, which comprises a machine body, a pin body is mounted at the bottom end of the machine body, a first chip groove is arranged on the surface of the pin body, side edges are mounted on one side of the first chip groove, and a main edge is mounted between the side edges. A main cooling groove is formed in the inner wall of the needle body, and an auxiliary cooling groove is formed in the side face of the main cooling groove. According to the small drill pin for dental restoration, through the arrangement of the machine body, the pin body, the first chip removal groove, the side edge and the main edge, when the small drill pin is used, the machine body is connected with the pin body, the first chip removal groove formed in the pin body is used for discharging wider spiral chip removal grooves of tooth chips for grinding teeth, the chip removal space is increased, tooth chip blockage is prevented, and the tooth chips can be guided to be smoothly discharged; the side blades and the main blade are installed in a multi-blade spiral shape, and the number and the angle of the cutting blades are increased. By means of the design, cutting efficiency can be improved, sliding of the drill point on the surfaces of teeth is reduced, and meanwhile tooth scraps can be better guided to be discharged.

This invention relates to the field of camera testing technology, specifically disclosing a stray light testing device. The stray light testing device includes a fixed component, M first sliding components, and 3M second sliding components. The fixed component includes a mounting base and 2M arc-shaped guide rails fixed to the edge of the mounting base. The top of the mounting base has a first strip light source located at the center of the mounting base and two high-intensity spotlights on either side thereof. All arc-shaped guide rails are evenly spaced around the axis of the mounting base. Test points are located above the mounting base on the axis of the mounting base, and the arc-shaped guide rails extend arc-shaped around the test points. Second sliding components are slidably mounted on the ends of the arc-shaped guide rails near the mounting base. For every two adjacent arc-shaped guide rails, one end away from the mounting base has a first sliding component slidably mounted on it, and the other end away from the mounting base has a second sliding component slidably mounted on it. Each first sliding component includes a cross-shaped light source, and each second sliding component includes a second strip light source. This stray light testing device improves testing efficiency through optimized light source layout.

The invention discloses a ceramsite concrete block pouring device, which relates to the technical field of building material production, and comprises a base and a pouring mechanism, the upper end of the base is symmetrically and fixedly connected with two electric sliding rails, and the side walls of the two electric sliding rails are jointly and slidably connected with a portal frame. The pouring mechanism comprises a distribution pipe fixedly connected to the upper end of the portal frame, the lower end of the distribution pipe penetrates through the top in the portal frame and is fixedly connected with a pouring head, a plurality of pouring openings are formed in the bottom in the pouring head, the inner wall of each pouring opening is rotationally connected with a valve plate through a pin shaft, and the other end of each valve plate is rotationally connected with a flow guide plate through a pin shaft. The lower end of the pouring head is fixedly connected with multiple vertical frames. According to the invention, by dispersing multi-strand instantaneous material distribution, a traditional centralized accumulation material distribution mode is changed, so that the aggregate distribution in the formed building block is extremely uniform and has no density gradient, and the consistency of mechanical properties and the stability of thermal insulation performance of a product are improved.

The utility model relates to injection molding machine technical field, concretely relates to a raw material mixing hopper for plastic injection molding machine, it includes processing cylinder, is provided with mixing stirring subassembly in processing cylinder, is provided with anti -blocking unloading component at processing cylinder top, is provided with controllable discharge capacity subassembly at processing cylinder bottom, the utility model discloses a mixing stirring subassembly is set up in processing cylinder, when raw material enters processing cylinder, first, several cutting blades in the uppermost region of the pivot scatter and break the raw material that enters first, then several oblique rectangular plates promote the further mixing of raw material in processing cylinder, finally, the spiral blade stirs and extrudes the raw material close to the bottom export, thereby can carry out all -round, multilevel stirring mixing to multiple raw materials, greatly improves the uniformity of raw material mixing, makes the quality of injection moulded product more stable, and the performance is more consistent.

This invention discloses a high-efficiency laser welding device for parts, comprising a machine body, a frame mounted on the machine body, a welding head mounted on the frame, a protective mechanism mounted on the frame, a support platform mounted inside the machine body via bearings, a bracket fixedly connected to the lower end of the support platform, a clamping mechanism mounted on the bracket, a support cylinder fixedly connected to the lower end of the support platform, a toothed ring fixedly connected to the outer side of the support cylinder, and a motor fixedly mounted at the lower end of the machine body. This invention relates to a high-efficiency laser welding device for parts, characterized by easy adjustment of the workpiece angle after clamping and higher welding quality.

The present application relates to the technical field of medical equipment, in particular to a carbon dioxide gas supply device for cell culture, comprising a shell, the shell is provided with a mixing device, gas enters the mixing device through the gas inlet pipe and is mixed, the mixed gas enters the heating module through the gas outlet pipe, and the mixed gas enters the cell incubator after being heated by the heating module; the inside of the mixing device is symmetrically provided with a spiral assembly, which comprises fixed spirals and movable spirals distributed alternately, the fixed spirals are fixedly connected with the mixing device, and the movable spirals are rotatably connected with the fixed spirals; a pressure receiving assembly is arranged below the spiral assembly and is transmissionally connected with the movable spirals, the mixing degree is finely adjusted according to the cell demand, the pressure receiving degree of the pressure receiving assembly is adjusted, static and dynamic mixing are flexibly switched, the uniformity of mixing is ensured, and the gas supply requirements of different cells are met.

The utility model discloses a kind of buried flat car parking lock, including pre-buried bucket, flat plate component, driving assembly, sensing component, conversion component, support component and control box;Pre-buried bucket is set below ground and both sides are fixed with baffle;Flat plate component rotation is set in pre-buried bucket middle part;Driving assembly is set in pre-buried bucket in flat plate component one side;Sensing component is set in pre-buried bucket in flat plate component other side, sensing component is used to detect whether there is vehicle parking and signal is sent to control box;Conversion component is set on pre-buried bucket in driving assembly top, conversion component is used to convert solar energy into electric energy and store into driving assembly;Support component is set between two baffle, and support component is used to assist rainwater to flow out and the drive of automobile wheel.

The utility model provides a kind of ccd camera mounting seat, comprising: base, first support rod, placement table, two light source fixing mechanisms and camera fixing mechanism, wherein, first support rod is arranged on the upper portion of base;Placement table is connected with support rod;Two light source fixing mechanisms are connected with first support rod respectively, and are located in the upper portion and lower portion of placement table respectively;Camera fixing mechanism is connected with first support rod, and is located in the upper portion of light source fixing mechanism.The ccd camera mounting seat of the utility model embodiment, through the transparent glass plate inside placement table cooperation respectively located in the light source fixing mechanism upper and lower, can realize front lighting and backlighting to detection article simultaneously, expand the angle and range of light source irradiation, increase the detection category of article, improve detection effect and accuracy.

The application discloses a kind of regulation GhFBA1 gene of land cotton fruit branch angle, Indel site and its application, belong to biotechnology field.The application is identified to the key gene GhFBA1 of regulation fruit branch angle in land cotton by whole genome association analysis (GWAS), and reveals its important role in cotton plant type regulation.Experiment proves that by reducing or inhibiting the expression of GhFBA1 gene, the fruit branch angle of land cotton can be significantly increased, which provides a clear molecular target for cotton plant type improvement.The application also identifies the significant correlation between the specific Indel site in GhFBA1 gene and the haplotype (Hap1 and Hap2) and fruit branch angle, which can be used as a molecular marker for rapid screening of cotton germplasm resources with ideal fruit branch angle.The application provides important technical support for molecular design breeding and mechanized production of land cotton, and has broad agricultural application prospects.

The utility model discloses an auxiliary jig for EVA rock climbing shoe heel processing, and relates to the field of EVA rock climbing shoe heel processing. The device comprises the machining device and the auxiliary jig, the machining device comprises the base, the first grinding wheel groove and the grinding wheel, the wedge-shaped guide plate and the second grinding wheel groove are designed to be matched with each other, it is ensured that the heelpiece can be stably placed on the jig, accurate slope grinding can be conveniently carried out, and the machining efficiency is improved. Meanwhile, normal operation and stability of the grinding wheel in the grinding process are guaranteed, an operator can adjust the position and angle of the heelpiece conveniently, the stability and bearing capacity of the jig base are improved through the sliding rod, it is guaranteed that the heelpiece cannot shake or shift in the grinding process, and the jig base and the mounting plate are combined, so that the grinding efficiency is improved. The heelpiece can be firmly fixed on the jig, fine grinding is facilitated, clamping and fixing of the heelpiece are achieved, and it is guaranteed that the heelpiece cannot move or shake in the grinding process.

This utility model relates to the technical field of abrasive cloth winding devices, and discloses an abrasive cloth winding device that facilitates tension adjustment. It includes a base plate, an L-shaped frame fixedly connected to the left side of the top front end of the base plate, a first upright plate fixedly connected to the right side of the top front end of the base plate, an insert frame fixedly connected to the bottom rear end of the first upright plate, an insert block slidably connected to the inner wall of the insert frame, a second upright plate fixedly connected to the rear end of the insert block, and sleeves fixedly connected to the rear ends of both sides of the insert frame. A pull rod is slidably connected through one side of the sleeve, and a pull plate is fixedly connected to one side of the pull rod. In this utility model, when the take-up roller needs to be quickly disassembled, the pull plate pulls the pull rod, causing it to pull the pressure plate. The pressure plate moves along the inner wall of the groove. After the pull rod disengages from the insert block, the second upright plate can be removed, and the take-up roller can be removed, thus completing the quick disassembly of the take-up roller.

The application belongs to the technical field of water treatment equipment, and particularly relates to a tunnel wastewater treatment processing equipment, which comprises a water treatment box body composed of an anaerobic section, an aerobic section, a secondary sedimentation tank and a clear water tank, wherein the anaerobic section, the aerobic section, the secondary sedimentation tank and the clear water tank are sequentially communicated; a cleaning unit is driven by a gas cylinder to slide on the side wall of a conical sedimentation tank, the inner wall of the conical sedimentation tank is cleaned, the sludge layer adhered to the inner wall of the conical sedimentation tank is separated from the conical sedimentation tank, and reenters the sludge backflow circulation, so that the efficiency of the water treatment box body on tunnel construction wastewater is improved; specifically, when the gas cylinder drives the cleaning unit, the driving arm can be rotated by extrusion, so that the cleaning plate is flatly attached to the inner wall of the conical sedimentation tank and keeps moving downward, so that the sludge adhered to the conical sedimentation tank can be scraped off and dispersed, reenters the sludge backflow circulation, and the water treatment efficiency is prevented from being reduced due to frequent cleaning cycles.

The invention relates to the technical field of heat exchangers, in particular to a coaxial double-channel heat exchange sleeve which is characterized in that two outer pipes are mounted in a mutually overlaid manner, each outer pipe is composed of a plurality of bent sections with two inclined sides and a horizontal section in the middle, the whole outer pipe is arranged in a spiral winding rising state, and connectors are arranged at the upper ends and the lower ends of the two outer pipes respectively; the interiors of the two outer pipes are coaxially connected with inner pipes along the paths of the outer pipes correspondingly. The middle of the inner pipe of each horizontal section is connected with a spiral channel, the middle of each spiral channel is separated through a supporting ring block, each horizontal section and the corresponding supporting ring block are each connected with a medium guiding component, and the medium guiding components guide media in the gap between the outer pipe and the inner pipe in a spiral advancing mode. The contact area of heat exchange is increased by matching with the contact with the spiral channel; according to the invention, through a double helix and self-adaptive adjustment composite means, flow and a thermal boundary layer are destroyed, so that medium distribution and heat exchange are more uniform, and the overall heat exchange coefficient and efficiency are improved.

A phased array radar antenna disclosed by the present invention comprises an antenna reflecting plate, a reflecting plate lining plate, a radio frequency connector, a power dividing feed unit, a sum-difference device module and a radiation array unit, the reflecting plate lining plate is arranged on a first mounting surface of the antenna reflecting plate, the radio frequency connector is arranged on a second mounting surface of the antenna reflecting plate, and the power dividing feed unit is arranged on the second mounting surface of the antenna reflecting plate. The power division feed unit is arranged on the reflecting plate lining plate, the radiation array unit comprises a left radiation array and a right radiation array which are symmetrical in structure and are independently arranged, and each of the left radiation array and the right radiation array comprises a plurality of columns of sub-arrays arranged in the horizontal direction; each column of sub-arrays is composed of a plurality of array element radiation units which are arranged along the vertical direction; and the plurality of array element radiation units in each column of sub-arrays all adopt an integrated structure and are coupled and connected with the sum-difference device module through the power division feed unit. According to the antenna, the gain, the beam pointing precision and the anti-interference capability of the antenna in the C wave band are improved.