199results about How to "Not easy to fall into" patented technology

The invention provides a camera module, and an encapsulating structure and an encapsulating method thereof. The encapsulating structure of the camera module comprises a circuit board, an image sensing chip, a passive element, an encapsulating part and an infrared filter, wherein the circuit board is provided with a first surface and a second surface; the image sensing chip and the passive element are arranged on the first surface of the circuit board, and the image sensing chip is provided with a sensing region and a non-sensing region and electrically connected with the circuit board; the encapsulating part is arranged on the first surface of the circuit board and at least part of the non-sensing region of the image sensing chip and encompasses the passive element; the infrared filter is arranged on the encapsulating part and located in a position above the sensing region of the image sensing chip, and forms an enclosure space together with the encapsulating part and the sensing region of the image sensing chip. The infrared filter of the encapsulating structure of the camera module is smaller in size so as to facilitate material saving and cost reduction; besides, impurities such as dust are unlikely to fall or be left in the enclosure space, so that the imaging quality is high.

The invention provides a mobile robot path planning method and device. The method includes the following steps: obtaining a current position point of a mobile robot, a target position point and barrier area information; generating a local window according to the current position point; when it is determined that the target position point is not located in the local window, obtaining a local sub-target position point according to the obtained position points and a planning formula; obtaining a local path between the obtained position points according to the obtained position points and a path search formula and recording the local path; and when it is determined that the local sub-target position point is the target position point, displaying the local path after smoothing is performed. The invention proposes a mobile robot path planning method and device, artificial potential field path planning is decomposed into a process of searching for a local target from a plurality of local windows, when the mobile robot is very close to the target, utilization of the path search formula can weaken the action of repulsive force, so that the mobile robot arrives at the target point, and when the mobile robot is away from the target, the mobile robot is not easy to fall into a local minimum point.

A micro-grid grid-connected optimal scheduling method based on improved subgradient particle swarms comprises the steps of establishing a micro-grid grid-connected model including an energy storage device; according to the actual situation, establishing an optimal scheduling objective function at the smallest total micro-gird power generation costs and environmental pollution control costs; establishing operating constraints in a micro-grid system, and separately establishing system power balance constraints, storage battery charge and discharge power constraints, micro-power output power limits and electricity purchasing and selling constraints for interaction between the micro-grid and large grids; improving the standard particle swarm optimization; separately improving the inertia weight and acceleration factors; and proposing to use the sub-gradient optimization method to update the velocity of the particles in the particle swarm optimization. According to the micro-grid grid-connected optimal scheduling method based on the improved subgradient particle swarms, while the micro-grid grid-connected optimization involving the energy-storage device is solved, advantages such as a good optimization searching effect and a fast convergence speed are realized.

The invention provides a method for refining sec-butyl acetate coarse products through dual-reflux and a preparation method of sec-butyl acetate comprising the refining process. The refining method of the sec-butyl acetate coarse products comprises (1) enabling the sec-butyl acetate coarse products to feed in a rectifying tower through a first feed port, enabling the water to feed in the rectifying tower through a second feed port in a water vapor mode, conducting azeotropy rectification under operation conditions of the azeotropy rectification, and obtaining mixture mainly containing water and impurities from a tower top; and (2) cooling the mixture, conducting oil-water separation to obtain the water phase and the oil phase, enabling reflux maters at least containing partial oil phase to flow back the rectifying tower, enabling at least partial water phase to form the water vapor and returning the water vapor to return and add in the rectifying tower from a third feed port. The second feed port and the third feed port are same or different, and both located at the position of 1-10 tower boards or theoretical tower boards below the first feed port. The method can be used for preparing the sec-butyl acetate with high purity.

The invention discloses an automatic shellfish collection device. The automatic shellfish collection device comprises a shoveling device, a diagonal conveying device and a filtering and collecting device. The shoveling device comprises an arc-shaped shovel blade with a low front side and a high rear side, a filtering plate fixedly connected with the rear side of the arc-shaped shovel blade and a plurality of shovel blade connection rods, wherein the front ends of the shovel blade connection rods are fixedly connected with the arc-shaped shovel blade. The diagonal conveying device comprises an upper diagonal driving belt, an upper rolling rod, a lower rolling rod and a an upper stop plate, the upper diagonal driving belt is arranged in rear of the filtering plate, the upper rolling rod and the lower rolling rod are arranged at the upper end and the lower end of the upper diagonal driving belt respectively and drive the upper diagonal driving belt to rotate, and the upper stop plate is arranged above the upper diagonal driving belt. The rear ends of the shovel blade connection rods are fixedly connected with the top of the upper stop plate. The filtering and collecting device comprises a filter screen with a high front side and a low rear side and a V-shaped net cage arranged in rear of the filter screen, and the filter screen is arranged in rear of the upper diagonal driving belt. The automatic shellfish collection device has the advantages of simple structure, low collection cost, high efficiency and low missing rate.

The invention discloses a fast drainage safety floor drain which comprises a floor drain seat and a floor drain cover positioned at the upper end part of the floor drain seat, and the structure is characterized in that a seat groove is formed at the upper end part of the floor drain seat, the floor drain cover is arranged in the seat groove, a preset water inlet gap is formed between the floor drain cover and the side wall of the seat groove of the floor drain seat, and the preset water inlet gap is formed between the floor drain cover and the groove bottom surface of the seat groove. The floor drain cover can be an arc-shaped cover without any openings, ground water flows through in the preset gap between the lower side of the floor drain cover and the floor drain seat and naturally flows into the floor drain along the periphery of the side wall of the floor drain seat, the water flows into the floor drain smoothly, the flow rate is faster and the flow is greater, thereby being applicable to the floor drain with an anti-odor device for use. The gap between the lower side of the floor drain cover and the floor drain seat can be preset to be smaller, so that tiny debris are difficult to fall into the floor drain; and anti-odor pre-stored water is stored in the floor drain and is not easy to air-dry or evaporate, so that the anti-odor effect of the fast drainage safety floor drain is more durable and the effect is better.

The invention discloses a chromatographic overlapping peak treatment device. The device comprises a data collection module, a data analysis module, a baseline noise reduction module, a calibration fitting module and an overlapping peak treatment module. Wherein the data collection module is connected with the data analysis module, the data analysis module is connected with the baseline noise reduction module, the baseline noise reduction module is connected with the calibration fitting module, and the marking fitting module is connected with the overlapping peak treatment module. According tothe invention, the overlapped peak treatment module firstly determines a peak position by adopting a derivative method; overlapped peaks are determined through base point grouping, a simplex method isused for fitting a peak shape curve, so that information such as peak heights, peak widths and protrusions of all components of the overlapped peaks is determined, the peak position determining precision is high, the information precision of all the components of the overlapped peaks is high, peak division intervals can be automatically defined, and the number of sub-peaks in the overlapped peakscan be automatically determined.

The invention discloses an online oil-drilling drill string monitoring system and a fault diagnosis method and belongs to the technique of oil drilling monitoring. The online oil-drilling drill string monitoring system comprises a PCB (printed circuit board), an upper computer, a torque sensor and an acceleration sensor, the torque sensor and the acceleration sensor are respectively connected with a drill string and the PCB and transmit collected torque signals and vibration signals to the PCB, and the PCB communicates with the upper computer with data subjected to pre-processing through a Bluetooth module. By the arrangement, transplantation is good, drilling state of the drill string can be monitored in real time, and abnormal conditions can be subjected to fault diagnosis accurately and reliably, so that convenience is brought to drilling personnel to take remedial measures timely, and occurrence of dangerous accidents is effectively prevented.

The invention discloses a method for assembling an outer ring axial broken thin-wall bearing, which comprises the following steps of: making a back-up ring (1), a taper guide block (2), a steel ball tray (3) and a pressing block (8); expanding an outer ring (4) by using the taper guide block and placing the outer ring on the upper end of the back-up ring; assembling the steel ball tray assembled with a holder (7), a steel ball (6) and an inner ring (5) into a recess on the upper end of the taper guide block; placing the pressing block on the inner ring; and applying an axial force F onto the pressing block to complete the assembling of the outer ring axial broken thin-wall bearing. Under the action of the instant axial force F of the pressing block, the deformation influences on the outer ring are very small so that the assembling and using performance of the thin-wall bearing is not influenced, assembling efficiency is high, and the assembling production of the mass axial broken thin-wall bearings can be met.

The invention provides a UWB positioning method based on taylor series expansion of a mixed least square method. The UWB positioning method based on taylor series expansion of the mixed least square method comprise the steps that firstly, the mixed least square method is used for directly processing the time when a pulse signal sent by a UWB tag is received by a base station to obtain a positioning initial value; then a taylor series expansion algorithm is used for processing the obtained initial positioning value again to enable the initial positioning value to be more accurate; and finally,an extended Kalman filter is used for connecting the obtained discrete positioning points into a track through a motion model to achieve the optimization effect on positioning accuracy. The UWB positioning method has high positioning precision and good anti-interference effect, and effectively improves positioning efficiency.

The invention provides a non-cooperative target positioning method aiming to solve the problem that the conventional positioning method is sensitive to group path errors of echo signals and instable in performance. The method includes the following steps: forming a synchronous data transfer chain between a receiving station and a transmitting station through a signal synchronization network in time domain, frequency domain and space domain; detecting non-cooperative target scattering information with a receiver by a multi-base positioning system to obtain a group path of a target echo signal, and making a distance information based irrational equation set simultaneous; all the bases transmitting measured target data to a central processing unit through a data transfer chain network, performing trace point correlation, positioning and track processing, and determining a target solving function; if a Tth coordinate information group in a coordinate range satisfies target function conditions, the central processing unit solving position coordinates of a non-cooperative target with the non-cooperative target positioning method so as to finish positioning of the non-cooperative target, and outputting the coordinates of the non-cooperative target.

The invention relates to a packaging bag. The packaging bag comprises a plurality of surfaces and a sealed accommodating space which is limited by the plurality of surfaces, wherein the sealed accommodating space is used for containing objects; the crossed part of every two adjacent surfaces among the plurality of the surfaces is provided with an edge which is integrally formed with the two adjacent surfaces; the plurality of surfaces are made of soft materials; and at least one edge of the plurality of the edges is made of a hard material. Compared with the prior art, the packaging bag can be still kept to the original shape after the objects contained in the packaging bag are partially or completely taken out.

The invention discloses a cultivator, whose rack assembly is pivoted to the hull through the rack rotation shaft mounted on the rear portion of the hull, wherein the left rotation bar hinged to the rack is connected to the left rotation gear on the tooth sector shaft of the steering link and speed changing box, and the right rotation bar hinged to the rack is connected to the right rotation gear on the tooth sector shaft of the steering link and speed changing box, the clutch lever hinged to the hull is connected to a clutch sleeve shaft of the speed changing box through the connecting link of the clutch, the shift control lever pivoted on the hull is connected to the shift control shaft of the arm and power arrangement. The invention realizes simple structure, small volume and convenient operation. íí

The invention discloses a spiral inductance optimization method based on HPSO algorithm and GA-BP algorithm. The spiral inductance optimization method comprises the steps that an on-chip spiral inductance data set is manufactured through electromagnetic simulation software HFSS, and data preprocessing is carried out; a genetic algorithm (GA) is adopted to optimize the BP neural network, then the optimized BP neural network is trained, and a GA-BP model is established; layout search is performed on the on-chip spiral inductor by adopting HPSO to obtain structure parameters meeting constraint conditions under a specific target inductance value; characterization parameter prediction is carried out on the structure parameters of the on-chip spiral inductor under the specific inductance value by using the GA-BP model. The method can help designers compromise and analyze the inductive performance and the inductive size, enables the circuit to have the optimal performance and the optimal size, not only guarantees the accuracy of the calculation result, but also can save time and cost, and has a good application prospect.

The invention discloses a connection locking device for a cover plate and a seat body of a toilet. The connection locking device comprises a fixed shaft, a locking part and an elastic part, wherein the cover plate can rotate around the fixed shaft; the fixed shaft is used for accommodating a locking bar of the seat body; the locking part is used for moving towards a first direction along an axial direction to lock the locking bar; and the elastic part is used for enabling the locking part to move towards the first direction along the axial direction. The connection locking device is characterized by also comprising a pushing part and a squeezing part, wherein one end of the pushing part is connected with the locking part; and the squeezing part is arranged on the cover plate, and is used for pushing the other end of the pushing part to enable the locking part to move towards a second direction along the axial direction when the cover plate is lifted. The cover plate can be lifted to be directly disassembled from the seat body. The connection locking device is not required to be manually operated when the cover plate is disassembled, so that the connection locking device has the advantage of simpleness in disassembly operation.

The invention discloses a smart automatic weeding machine. The smart automatic weeding machine includes a control module, a power supply module, a visual identification module, an obstacle avoidance module, a balance module, an alarming module, a cutter module, a motor drive module, a man-machine interaction module, a grass clipping collection module and a track dolly, wherein except the track dolly, all the modules are mounted on the track dolly; a double tank track chassis serves as the chassis of the track dolly and is composed of two front tracks and two rear tracks; the smart automatic weeding machine has an independent weeding mode and a remote control weeding mode; in the independent weeding mode, the weeding machine selects a corresponding working mode to work by independently andsmartly identifying the type of a lawn; in the remote control weeding mode, through a wireless communication technology, the weeding machine is manually and remotely controlled to work, and the remotecontrol weeding mode mainly aims at solving the dead space problem of the lawn. The smart automatic weeding machine can identify and process different working environments through a sensor and a processor of the weeding machine and then selects different working modes, therefore, smart working is achieved, and human resource usage is greatly reduced.

The invention discloses a dust hood for a drilling machine. An inner hood (1) is arranged inside of an outer hood (4) by a connecting plate (2); the side wall of the outer hood (4) is connected with a dust outlet (5); the top of the outer hood (4) is provided with a mounting plate (3); a cup-like sealing hood (7) and an annular sealing plate (8) are assembled on the mounting plate (3); and a dust-proof belt plate (10) is arranged on the bottom edge of the outer hood (4) and the dust outlet (5). The dust hood of the invention can prevent dust rushing upwards in the drilling process, can prevent the dust from spilling over, can prevent the discharged dregs from falling in a shot hole when moving the drilling machine, and has simple structure and reliable property.

The invention discloses a safe floor drain capable of draining water rapidly. The safe floor drain comprises a floor drain seat and a floor drain cover positioned at the upper end part of the floor drain seat, wherein a seat groove is formed in the upper end part of the floor drain seat; the floor drain cover is placed in the seat groove; preset water inlet gaps are formed between the floor drain cover and each side wall of the seat groove; a preset water inlet gap is formed between the floor drain cover and the bottom surface of the seat groove; a seat hole and a separated water seal groove are formed in the lower end of the floor drain seat, wherein the water seal groove is movably sleeved in the pipe end of a floor drain pipe; a hole shoulder and a drain hole are formed in the seat bottom of the water seal groove; the port of the drain hole is covered with a cup with a gap and vertical teeth; transverse teeth are formed in the lower part of the cup; a preset water outlet gap is formed between the cup and the drain hole as well as the hole shoulder; accumulated water forms a water seal structure in the water sea groove; a siphon is arranged in the drain hole in a sleeved manner; the safe floor drain is characterized by further comprising a water surrounding plate and a steam surrounding hole. The safe floor drain provided by the invention has the advantages that the inflow of the accumulated water is faster, the drainage is smoother, the odor-resistant effect is more durable, the problem brought by possible leakage around the floor drain pipe is solved, and the use is more convenient.

The invention discloses a safe floor drain of a floating cover, comprising a floor drain seat and a floor drain cover positioned on the upper end part of the floor drain seat. The safe floor drain is structurally characterized in that the upper end part of the floor drain seat is provided with a seat slot; the floor drain cover is positioned in the seat slot; a preset water inlet gap is formed between the floor drain cover and the side wall of the seat slot of the floor drain seat; a preset water inlet gap is arranged between the floor drain cover and the bottom surface of the seat slot; the lower end part of the floor drain seat is provided with a seat bottom which is provided with a drainage hole; the drainage hole is provided with a floating cup encapsulated on an end port; a water inlet gap is kept on the inner side surface of the floating cup corresponding to the floor drain seat; and a water inlet gap is kept between the floating cup and the bottom surface of the seat bottom of the floor drain seat. The floor drain cover floats by the action of buoyancy through the deodorant structure of the floating cup; the water inlet gaps are increased to enable floor water to smoothly flow in from the circumference of the end port of the floor drain seat; and the flowing speed of the floor water can approach or reach a non-setting state or the state without the floor drain cover.

The invention discloses a novel pen container which comprises a barrel body and a barrel cover. The upper end of the barrel body is open and the lower end of the barrel is closed; the upper end of the barrel body is connected with the barrel cover by a plurality of hinges; the inside of the barrel body is separated into a plurality of chambers by a plurality of separators. The novel pen container integrates various functions into one whole body and not only can be used for storing pens in a classified manner, but also can be used for viewing time and the temperature; the novel pen container is provided with the barrel cover 2, so that dust is difficult to fall into the pen chambers; the novel pen container not only is provided with drawers for storing paper clips, clips and invoices, but also is provided with a round groove for storing small stationeries, so that articles are convenient to take for use, working efficiency is improved and the novel pen container is economic and practical.

The invention relates to a trailer driving device, and particularly relates to a trailer driving device for a four-wheel drive tractor. The towing driving device for the four-wheel drive tractor aims at solving the problem that a farm trailer influences agricultural production and transportation by being sunk into a mud pit or silt due to insufficient traction power of the four-wheel drive tractor when operating in a farmland with poor road conditions. The other end of a trailer driving shaft is connected with a first three-tooth connecting gear through a universal joint; one end of a transmission case connecting shaft is inserted into the first three-tooth connecting gear, and the other end of the transmission case connecting shaft is connected with a transmission case; the first three-tooth connecting gear is sleeved on the transmission case connecting shaft; the transmission case is connected with one end of an intermediate transmission shaft assembly through the universal joint; the other end of the intermediate transmission shaft assembly is connected with an on-off transmission mechanism through the universal joint; and the on-off transmission mechanism is connected with one end of a power shaft through the universal joint. The trailer driving device disclosed by the invention is used for agricultural transportation vehicles.

The invention discloses a field programmable gate array-based small-world algorithm hardware system. Based on the principle of the small-world algorithm, it consists of two levels of individual optimization and global optimization, and is connected by individual information modules in the middle. The individual optimization part is composed of a random number generator, a position reorganization module, a fitness calculation module and a comparison module connected in sequence. Complete the individual neighborhood search, fitness calculation and selection process. The global optimization part is composed of individual fitness comparison module and system scheduling module connected sequentially. The individual fitness comparison module selects the best individual among all individuals, and supplies the system scheduling module to judge whether the termination condition is met, and whether to initiate the next generation search, etc. This method has simple hardware implementation, high parallelism, can effectively overcome the local extremum problem, retain the diversity of the solution space, and overcome the deception problem more effectively to a certain extent, and has faster convergence speed and stability.

The invention discloses a double-folding-type water pipe lengthening continuous track chassis drainage vehicle. The drainage vehicle comprises a continuous track chassis, a telescopic drainage pipe, awater pump, an overturn folding mechanism, a suspension arm, a lengthening water pipe, a power system and a hydraulic system; the overturn folding mechanism comprises an overturn oil cylinder, an overturn frame, a first connecting oil cylinder, a folding frame, a second connecting oil cylinder and a water pipe fixing frame; the two ends of the folding frame are hinged to the water pipe fixing frame and the overturn frame respectively; the end, not hinged to the folding frame, of the overturn frame is hinged to the continuous track chassis; the two ends of the overturn oil cylinder are hingedto the continuous track chassis and the overturn frame respectively; the two ends of the first connecting oil cylinder are hinged to the overturn frame and the folding frame respectively; the suspension arm comprises a column, a suspension arm oil cylinder, a telescopic rod, a rolling wheel, a suspension arm winch and a suspension arm steel wire rope. The drainage vehicle has the advantages that the water pipe can be lengthened to pump water located at a deeper place, the drainage vehicle can be used under the condition of muddy ground at the same time, and long-distance water pumping and obstacle-crossing water pumping can be achieved.

The invention discloses a low-temperature gas return valve on an LNG storage tank. The low-temperature gas return valve comprises a valve body arranged on a gas return hole of the storage tank, a valve body passage communicated with the inner cavity of the storage tank and the valve body outlet is arranged in the valve body, a valve core with a sealing ring is arranged in the valve body passage, a push guide device capable of pushing the valve core towards the outside is arranged between the valve core and valve body, a conical sealing surface capable of closely fitting with the sealing ring on the valve core is arranged on the side wall of the valve body passage, the sealing ring closely fits and seals with the conical sealing surface after the push guide device pushes the valve core towards the outside, a locating pin capable of screwing into a spiral locating guide groove in the front end of a gas return gun is arranged at each of two sides of the valve body, a movable sleeve sleeves each locating pin, and the movable sleeves are capable of freely rolling on the locating pins. According to the low-temperature gas return valve on the LNG storage tank, the movable sleeves sleeve the locating pins, and accordingly the friction on the locating pins when screwing into the spiral locating guide groove in the front end of the gas return gun is greatly reduced, and the service life of the low-temperature gas return valve is prolonged.

The invention discloses a hand-push tea picking machine, which relates to the field of tea collection, and comprises a small trolley, a gasoline engine and a tea storage tank are arranged on the small trolley, a tea storage bag is placed in the tea storage tank, and the opening of the tea storage bag is set There are four hanging rings, one end of the support rod is welded to the car plate of the small trolley, and the other end is welded to the shearing mechanism. There are two shearing mechanisms, which are symmetrically arranged with the small trolley as the symmetrical axis, and can simultaneously treat two ridges of tea leaves. to pick. The shearing mechanism includes a transmission mechanism, an upper strip-shaped clamp, a lower strip-shaped clamp and a sawtooth blade. The tooth grooves adapted to the picked buds and leaves are formed by the upper strip-shaped clamp and the lower strip-shaped clamp, so that there is no need to pluck tea leaves. It is easy to pinch the tea leaves, and it is not easy to entrain the old leaves. The rollers are arranged on the lower part of the trolley and are cylindrical, and engineering plastics are used as the material. The invention can effectively solve the problems of low efficiency of tea picking, high price of tea picking machines, easy sinking of small trolleys into muddy ground, easy pinching of tea leaves and entrainment of old leaves when picking tea leaves.

The invention provides a safe electric kettle capable of improving the waterproof and dustproof performance and safety of an existing electric kettle, and relates to a household appliance, in particular to the safe electric kettle. The safe electric kettle comprises a power seat and a kettle body. The power seat is provided with a protruding socket, the kettle body is provided with a handle and aplug matched with the socket, a jack of the socket is horizontally formed, and a baffle capable of being opened and closed is arranged on an inlet of the jack of the socket. The safe electric kettle is safer and more convenient to use.

The invention relates to a vertical type multifunctional movable socket, which comprises a socket body, wherein a socket base and a socket panel are arranged in the socket body, and a copper plug bush is arranged in the socket base. The vertical type multifunctional movable socket is characterized in that the vertical type mounting surfaces of the socket body and the socket panel face to the periphery and form a hollow ring shape, at least two blocks of the socket body in each ring are connected with each other through a left-right connecting mechanism and form a layer, each socket consists of one layer, two layers or more, an upper-lower connecting mechanism is arranged between each two layers, the lower part of the socket body on the bottom layer is provided with a base, the socket bodyon the top layer is provided with a top cover, and the base and the top cover are fixed by fasteners. The vertical type multifunctional movable socket adopts a vertical type layered structure, can beused as a domestic appliance placed on a desk or a table, is beautiful in shape and is safe to use; the left and the right plug holes of the socket bodies on the same layer and the upper and the lower plug holes of adjacent layers do not interfere with each other so that the utilization rate is high; and a user can select the number of the plug holes freely according to actual needs, and the vertical type multifunctional movable socket solves the problems of troubles and potential safety hazards caused by the series connection of a plurality of sockets in the prior art.

The invention relates to an offset type kitchen oily fume air curtain blocking device with a single fan and a kitchenware system. The device comprises the fan (6) and a through U-shaped or rectangular air flue composed of one or two cross pipes (2) and two longitudinal pipes (3). The offset type kitchen oily fume wind curtain blocking device is characterized in that an air inlet is formed in one end of one of the longitudinal pipes (3) far away from the cross pipe (2) close to a cooking operator and is communicated with an air outlet of the fan (6) mounted in a space in the lower part of a cooking bench through a connecting air pipe (5); both the cross pipes (2) and the longitudinal pipes (3) are enclosed by a bottom plate (101), an inner side plate (102), an outer side plate (103) and a top plate (104), the outer side plate (103) inclines towards the inner side and extends upwardly to exceed the top plate (104), and gas sprayed from elongated spray nozzles in the cross pipes (2) and the longitudinal pipes (3) forms a three-sided or four-sided oblique air curtain on the periphery of kitchenware. Due to the adoption of the single fan, the offset type kitchen oily fume air curtain blocking device has the advantages of simple structure, high convenience for manufacture and low cost.

The invention relates to a construction technology of a sunken bathroom, and belongs to the technical field of engineering construction. In a using process, water on floor surface is discharged from indoor through a water drainage through pipe; however, in a condition that during long term use, part of water permeates into a water accepting layer to be absorbed by ceramsite through cracks among floor tiles or ceramic tiles, and the water permeated into the ceramsite is converged on a leveling blanket along with accumulation of the water; then part of the water directly flows into a main waterdrainage pipe, the other part of the water flows into a water drainage branch pipe through through holes, then is converged to the water drainage main pipe through the water drainage branch pipe, andis finally discharged. According to the construction technology of the sunken bathroom, a first waterproof layer, a second waterproof layer and a third waterproof layer are arranged simultaneously, sothat the water is not easy to flow from a bearing course to a structural layer, and the effects that water accumulation and water seepage are not easy to happen are realized.

The invention provides a garlic seed feeding device, and relates to the field of agricultural planting machines. The garlic seed feeding device is composed of four main vibration springs, an electromagnetic vibrator, a material tank, a side-wall rail, a garlic-shaped sieve pore, a sieve pore channel, a rail outlet, a seed feeding plate upper fixing plate, a seed feeding plate, eight seed storage pipes, a seed feeding plate tray, a garlic dropping pore, a seed guiding pipe, a transmission shaft, a bevel gear and a rack. The garlic seed feeding device is characterized in that the material tank is installed on the electromagnetic vibrator, the main vibration springs can be driven by the electromagnetic vibrator to vibrate, the side-wall rail spirally rises from the tank bottom and formed in the inner side wall of the material tank, and the garlic-shaped sieve pore is formed in the middle section of the side-wall rail and communicates with the bottom of the material tank; the rail outlet is connected with the seed feeding plate, the seed storage pipes are uniformly distributed on the seed feeding plate, the seed feeding plate is fixed between the seed feeding plate upper fixing plate and the seed feeding plate tray, the seed feeding plate tray is fixed to the rack, the seed guide pipe is connected with the garlic dropping pore, the garlic dropping pore is located on the seed feeding plate tray, and the seed feeding plate can be driven by the transmission shaft to rotate.