106results about How to "Easy to block" patented technology

The invention discloses an RTO heat storage type incineration method waste gas treatment device which comprises a spraying adsorption box, one side of the spraying adsorption box is fixedly connected with a connecting pipe, the other end of the connecting pipe is fixedly connected with a gas inlet pipe, an impurity removal device is arranged on the inner side of the gas inlet pipe, a stirring assembly is arranged in an inner cavity of the spraying adsorption box, and the stirring assembly is fixedly connected with the spraying adsorption box. The waste gas treatment device has the advantages that through the arrangement of a filter plate, particle impurities contained in waste gas can be conveniently blocked at the front end of the filter plate, at the moment, airflow generated by the waste gas can conveniently drive a plurality of spiral blades to rotate, and therefore the waste gas treatment device is convenient to use. Furthermore, a rotating shaft can conveniently drive a cleaning brush to rotate and sweep at the front end of a filter plate, particle impurities on the outer side of the filter plate are removed, and at the moment, the particle impurities fall into a material collecting drawer under the action of gravity to be collected.

The utility model discloses a high-precision airflow classifier, and relates to the technical field of sorting. The high-precision airflow classifier comprises an airflow classifier shell and a classification device, the classification device comprises a feeding port, the feeding port is fixedly connected to the upper end of the airflow classifier shell and extends into the airflow classifier shell, the upper end of the feeding port is fixedly connected with a driving motor, and the output end of the driving motor is fixedly connected with a rotating shaft; the lower end of the rotating shaft is fixedly connected with a dispersing disc, the surface of the dispersing disc is fixedly connected with baffles, the surface of the dispersing disc is rotationally connected with blades, and resin raw material particles collide with the baffles and the blades through the centrifugal effect of rotation of the dispersing disc, so that the resin raw materials are scattered, and the resin raw materials are evenly distributed in the airflow classifier shell; the uniform distribution ensures that the resin raw materials can be subjected to uniform airflow and centrifugal force, so that the stability and precision of the grading process are improved, and the grading efficiency of the device is improved.

The utility model relates to the technical field of clothes processing equipment, in particular to a drying system of drying equipment and the drying equipment, and aims to solve the problem that a filtering device of the existing drying equipment is poor in filtering effect. Therefore, the drying system comprises a drying air duct and a filtering device, a first inserting opening is formed in the drying air duct, and the filtering device comprises a first filter screen frame, a second filter screen frame, a first filter screen installed on the first filter screen frame and a second filter screen installed on the second filter screen frame. The first filter screen frame and the second filter screen frame penetrate through the first inserting opening and extend into the drying air channel, and the first filter screen frame is connected with the second filter screen frame in a pivoted mode. The air flow can be filtered twice through the first filter screen and the second filter screen, the filtering effect of the filtering device is improved, a user can conveniently detach the filtering device for cleaning by adopting an inserting mode, and the first filter screen frame and the second filter screen frame are pivotally connected so that the first filter screen and the second filter screen can be conveniently cleaned.

The utility model provides a cleaning robot, and relates to the technical field of cleaning equipment. The side brush module of the cleaning robot comprises a shell, a driver, a first side brush assembly connected with the driver and a second side brush assembly connected with the first side brush assembly. The friction force between the second side brush assembly and the shell is larger than the friction force between the second side brush assembly and the first side brush assembly. The side brush module has a gathering state and an unfolding state, when the side brush module is switched between the gathering state and the unfolding state, the driver is used for driving the first side brush assembly to rotate in the first direction or the second direction relative to the second side brush assembly, and at least in the unfolding state, the driver drives the first side brush assembly to rotate in the first direction or the second direction. The first side brush assembly is used for driving the second side brush assembly to synchronously rotate in the first direction. According to the cleaning robot, the side brush modules can be controlled to be in the unfolded state, the first side brush assembly and the second side brush assembly are used for efficiently cleaning the surface to be cleaned, and the side brush modules can also be controlled to be in the gathered state so that the cleaning robot can avoid obstacles.

The utility model belongs to the technical field of food processing devices, and discloses a food processor convenient to use, which comprises a main machine with a support platform, a cup body and a drain valve, the drain valve comprises a valve body and a slurry nozzle, a valve core is arranged in the valve body, the slurry nozzle is communicated and matched with the valve core, the valve body is mounted on the cup body, the cup body is detachably mounted above the support platform, and the support platform is arranged on the support platform. The supporting platform is provided with a mounting opening, the supporting platform forms a slurry nozzle placing area surrounding the mounting opening, the slurry nozzle is detachably placed on the slurry nozzle placing area and can rotate along with the valve element, a slurry discharging pipe of the slurry nozzle downwards penetrates out of the mounting opening, and the food processor further comprises a first limiting part and a second limiting part which are used for limiting the slurry discharging pipe so as to limit the rotating angle of the slurry nozzle. The first limiting part and the second limiting part are both arranged on the lower side of the supporting platform in a protruding mode. Functional diversification and deep cleaning of the drain valve are achieved, and use is convenient. And when the slurry nozzle needs to be taken down, the upper surface of the supporting platform has a reasonable space to avoid fingers of a user, and the slurry nozzle is convenient to disassemble and assemble.

The utility model relates to the technical field of clothes processing equipment, in particular to a drying system of drying equipment and the drying equipment, and aims to solve the problem that a filtering device of the existing drying equipment is poor in filtering effect. Therefore, the drying system comprises the drying air channel and the filtering device, the filtering device comprises a first filter screen frame, a second filter screen frame, a first filter screen and a second filter screen, the first filter screen frame, the second filter screen frame, the first filter screen and the second filter screen extend into the drying air channel, airflow can be filtered twice through the first filter screen and the second filter screen, and the airflow can be filtered twice through the first filter screen and the second filter screen. The filter device is mounted in an inserting manner, so that a user can conveniently detach the filter device for cleaning, the first filter screen frame and the second filter screen frame are pivotally connected, so that the first filter screen and the second filter screen are conveniently cleaned, and the first filter screen frame is arranged in the accommodating cavity of the second filter screen frame; the first filter screen frame can be effectively prevented from automatically facing the second filter screen frame, so that mounting and dismounting are facilitated.

The invention discloses a same-frequency interference adaptive processing method applied to a shipborne navigation radar, and the method comprises the steps: dividing each echo into sub-segments with equal sample lengths, and obtaining the amplitude mean value measurement and the flatness value measurement of each sub-segment; secondly, obtaining the interference number of each echo, the starting point and the ending point of each interference, and obtaining the bottom noise of each echo; thirdly, obtaining statistical characteristics of interference quantity, interference length and interference intensity, and obtaining bottom noise statistical characteristics of echoes in a frequency domain; and finally, calculating a new waveform adjustment parameter according to the analysis of the interference characteristics. Through omnidirectional detection and analysis of time-frequency characteristics and statistical characteristics of same-frequency interference, the shipborne radar adaptively selects waveform parameters to realize active interference avoidance, the influence of interference is reduced, and a guarantee is provided for perception robustness of the shipborne radar under the condition of same-frequency interference.

The utility model provides a mattress with high waterproof performance, which belongs to the technical field of mattresses, and comprises a mattress body, a silica gel frame, water-absorbing cotton cloth, a magic tape rough surface and a magic tape hook surface, the silica gel frame is fixedly arranged on the outer side of the upper surface of the mattress body, the magic tape rough surface is sewed on the upper surface of the mattress body, and the water-absorbing cotton cloth is arranged on the water-absorbing cotton cloth. A magic tape hook surface is sewn at the bottom of the water-absorbing cotton cloth; according to the mattress, the water-absorbing cotton cloth is arranged and can absorb body fluid generated by gatism of a patient, the water-absorbing cotton cloth is adhered to the mattress body in a hook-and-loop fastener adhering mode, the water-absorbing cotton cloth can be conveniently taken out of the mattress body, and therefore the water-absorbing cotton cloth can be conveniently cleaned, and due to the arrangement of the silica gel frame, the water-absorbing cotton cloth is convenient to clean. The side face of the water-absorbing cotton cloth is conveniently blocked, the water-absorbing cotton cloth is prevented from being extruded after absorbing body fluid, the body fluid is prevented from falling to the bottom face of a ward from the periphery of the mattress body after being extruded from the side face of the water-absorbing cotton cloth, and sanitation of the ward is guaranteed.

The mobile phone antenna easy to disassemble and replace comprises a mobile phone body, an antenna and an antenna connector, the mobile phone connector is arranged on one side of the top of the interior of the mobile phone body, a slot is formed in one side of the top of the mobile phone body and corresponds to the mobile phone connector in a penetrating mode, the antenna is connected to the mobile phone connector in a pluggable mode, and the antenna is connected to the mobile phone connector in a pluggable mode. According to the utility model, the fixing groove is arranged at the outer side of the slot of the mobile phone main body and the antenna, the damping rotating shaft is arranged at the bottom of the fixing groove, the large rotating block is arranged at the top of the damping rotating shaft, and the sealing cover is arranged at the outer side of the large rotating block, so that water vapor and dust are blocked through the sealing cover after the antenna is detached and replaced and are prevented from entering the mobile phone main body; and in order to further block water vapor and dust, a second rubber sealing strip is arranged on the outer surface of the sealing cover, so that the sealing performance of the sealing cover is improved, and water vapor and dust can be better blocked.

The utility model relates to the field of building material detection equipment, and discloses building material tensile strength detection equipment which comprises a first U-shaped frame, the first U-shaped frame is fixed on the top surface of a U-shaped seat, a connecting plate is fixed on the rear side of the outer wall of the first U-shaped frame, a conveying belt is arranged in the U-shaped seat, and the conveying belt is fixed on the top surface of the U-shaped seat. And an infrared sensor is detachably arranged in the second U-shaped frame, a moving plate is fixed to one end of a telescopic rod of a first hydraulic push rod, second hydraulic push rods are fixed to the inner walls of two fixing holes correspondingly, and clamping plates are fixed to one ends of telescopic rods of two third hydraulic push rods correspondingly. According to the building material tensile strength detection device, a large number of building materials can be subjected to tensile detection one by one at a time by automatically supplementing and clamping the building materials, so that the time consumed by frequent manual operation is shortened, the detection is more convenient, the detection efficiency of the tensile strength of the building materials is improved, and the tensile strength detection device is more practical.

The utility model provides a universal wheel lifting assembly of a sweeper and the sweeper, and relates to the technical field of electrical equipment. The universal wheel lifting assembly comprises a power mechanism and a universal wheel mechanism. The power mechanism is suitable for being installed in a machine shell of the sweeper, the power mechanism comprises a power pump and a power cylinder which are in driving connection, the power cylinder comprises a cylinder body and a piston located in the cylinder body, the universal wheel mechanism is connected with the piston, the power pump is used for driving the piston to move in the cylinder body, and the power pump is used for driving the piston to move in the cylinder body. Therefore, the universal wheel mechanism is driven to extend and retract relative to the machine shell. Through the arrangement, when the sweeper meets an obstacle, the universal wheel mechanism can be driven by the power mechanism to retract relative to the machine shell, the obstacle can be conveniently avoided, and the obstacle crossing function of the sweeper is achieved.

This utility model relates to the field of traditional Chinese medicine processing technology and discloses an intelligent steaming and cooking device for ginger and pinellia, including a heating device and a steaming and cooking barrel. A support plate is fixedly connected to the outer surface of the steaming and cooking barrel, a motor is fixedly connected to the top of the support plate, a rotating shaft is fixedly connected to the output end of the motor, a control frame is fixedly connected to the top of the rotating shaft, a connecting bracket is fixedly connected to the outer surface of the control frame, and a cylinder is fixedly connected to the top of the connecting bracket. This utility model has the following advantages and effects: When the operator needs to add mixed alum to the steaming and cooking ginger water, the motor drives the rotating shaft to rotate, which in turn rotates the control frame, causing it to move away from the steaming and cooking barrel to expose the opening. Then, water is added, and after the medicinal material device is placed in, the rotating shaft is rotated to rotate the control frame so that it aligns with the top of the steaming and cooking barrel. Then, the cylinder drives the air rod to control the sealing cap to press down, thereby closing the steaming and cooking barrel. The top of the sealing cap is provided with an exhaust hole.

The utility model relates to the technical field of traditional Chinese medicine dipping and soaking, and solves the problem of traditional Chinese medicine dipping and soaking dislocation caused by leg movement. The special traditional Chinese medicine dipping device comprises a supporting sleeve, the structural edge of the supporting sleeve is connected with binding belts which are symmetrical up and down, an adjusting belt which is used for being connected with the supporting sleeve and adapts to multi-angle binding is installed between the two binding belts, and the supporting sleeve comprises a first sleeve piece and a second sleeve piece; a telescopic compensation piece is arranged between the first sleeve piece and the second sleeve piece, the adjusting belt is connected to the first sleeve piece and the second sleeve piece, the adjusting belt comprises a first connecting belt connected with the first sleeve piece, a second connecting belt is connected to the second sleeve piece, and the second connecting belt is connected with the first connecting belt and the extending end point of the first connecting belt. The extending end points of the second connecting band and the first connecting band are connected with elastic bands connected to the bending positions of the legs of the user in a sleeving mode, and the two binding bands which are symmetrical up and down are connected with the first sleeve piece and the second sleeve piece respectively.

This utility model provides an automatic sawing device for automotive castings, belonging to the field of casting riser sawing devices. It includes a machine room with a material drop chute at the bottom, within which a conveyor is installed; and a sawing assembly located on the inner rear side of the machine room. This utility model, through its separation shell, separation plate, and drive assembly, can collect falling structural parts and flowing cooling water during the sawing process of automotive castings. The cooling water is then discharged through a water trough on the separation plate and collected in a water collection tank through separation holes. After water separation, the structural parts fall after the separation plate is removed, enter the material drop chute, and are conveyed out of the machine room by the conveyor. This minimizes the problem of contaminating the conveyor when removing the sawn structure, improves the service life of the conveyor structure after long-term use, and reduces the frequency of conveyor belt cleaning.

This invention discloses a multi-set integrated screen for a sand mill that is less prone to clogging and easy to disassemble, relating to the grinding field. It includes a mounting plate and multiple screen bodies mounted on the mounting plate. The key feature is that the mounting plate is equipped with a synchronous locking mechanism. This invention provides a multi-set integrated screen for a sand mill that is less prone to clogging and easy to disassemble. By providing a synchronous locking mechanism on the mounting plate, multiple screen bodies are simultaneously locked during installation. When multiple screen bodies need to be removed from the mounting plate, the synchronous locking mechanism unlocks them simultaneously. This allows for the synchronous locking and unlocking of multiple screen bodies, facilitating the disassembly and installation of the screen bodies.

The application discloses a kind of mountainous area highway slope rockfall protection equipment, including supporting mechanism;The supporting mechanism includes protection plate, and further include at least one first linear degree of freedom;At least four The protection plate is hinged between each other and is folded mutually;The technology of the application can flexibly unfold and adjust the position, angle and form of protection plate according to actual situation by the design of supporting mechanism, abutting mechanism and carrying mechanism.This makes the protection device can adapt to different shapes of slope and various rockfall angle, improves the overall adaptability.M type of unfolding mode makes impact force more evenly distributed on each folding layer, thereby reducing the risk of damage caused by excessive local stress.This helps to prolong the service life of protection plate, reduces maintenance cost.M type of unfolding mode makes the side with acute angle face the side of mountainous area slope rockfall, this design can better intercept and block rockfall.

The utility model discloses a quantitative feed feeding device for livestock breeding. The quantitative feed feeding device comprises a feeding machine. A feeding bin is fixedly installed at the upper end of a feeding machine, and lower inclined baffles are fixedly installed at the bottoms of the two sides of the inner wall of the feeding bin. According to the device, the feeding bin is fixedly installed at the upper end of the feeding machine, the lower inclined baffles are installed on the two sides of the bottom of the feeding bin, and the fixing plates are fixedly installed at the upper ends of the lower inclined baffles, so that feed is conveniently blocked at an opening of the feeding bin, and it is avoided that a large amount of feed is fed inside, and consequently a stirring device is blocked; meanwhile, fixed discs are installed on the two sides of the inner wall of the feeding bin and connected with a rotating rod through bearings, multiple sets of claws are installed at the upper end of a rotating block, and the claws are inserted into an output port of a driving motor through connecting rods, so that control through the driving motor is facilitated, the rotating rod drives the rotating block to rotate, and feed is quantitatively put into the stirring device; jamming caused by feeding a large amount of feed is prevented, and the working efficiency is improved.

The present invention relates to the technical field of coal mine screening, and specifically discloses an air energy screening device for a coal washer, comprising a frame, a protective frame fixedly connected to the back and side of the frame, a feed port opened at the top of the frame, support legs fixedly connected to the outer walls of the frame and the protective frame, a screening mechanism for screening action is arranged in the frame, an auxiliary mechanism for assisting screening action is arranged inside the protective frame, the screening mechanism comprises a double-axis motor, a guide plate, a filter baffle, and a guide block, the double-axis motor is fixedly installed on the back outer wall of the frame, a first transmission rod is fixedly connected to one side output shaft of the double-axis motor, and a third gear is fixedly sleeved on one end of the outer wall of the first transmission rod away from the double-axis motor. By providing a screening mechanism, it is convenient to perform air energy screening on coal mines, and large coal mines can be collected separately from particles, and multi-channel air energy screening has better screening effect.

This utility model relates to the field of grinding wheel technology, and more particularly to a grinding wheel machine with a protective device. The technical solution includes a fixed base, protective covers, a machine housing, and a grinding wheel. Protective covers are fixedly installed on both sides of the machine housing, with the grinding wheel located inside the protective covers. Cover plates are fixedly installed on the outer sides of both protective covers. A first sliding groove is provided at the inner edge of each of the two cover plates, and a second sliding groove is provided near the inner edge of the inner wall of each of the two protective covers. An opening is provided on the front surface of each of the two protective covers. Two arc-shaped sliding plates are provided inside each of the two protective covers near the opening, with their sides located within the first and second sliding grooves, respectively. This utility model allows the size of the opening on the protective cover to be adjusted according to the size of the workpiece, to better block flying particles and grinding wheel fragments after explosion, thereby improving the safety of the grinding wheel machine.

The utility model discloses a mine underground roadway vibration ore drawing machine ore blocking device which comprises a baffle arranged at a discharging port of a vibration ore drawing machine, the bottom of the baffle is detachably connected with the vibration ore drawing machine, the top of the baffle is fixedly connected with one end of a hanging rod, and the other end of the hanging rod is rotationally connected with a cross beam penetrating through the top of an inner cavity of a roadway. All the fixed pulleys are connected in series through a steel wire rope, one end of the steel wire rope is connected with the bottom of the baffle, and the other end of the steel wire rope is connected with a counter weight. Guiding is achieved through the fixed pulley, the baffle ascends and descends through the steel wire rope and the balance weight hammer, the traditional mode that operators need to climb to conduct manual picking during ore drawing is replaced, safety is high, practicability and convenience are achieved, and the ore drawing and blocking efficiency is greatly improved.

The utility model discloses an assembly workbench device. The assembly workbench device is characterized by comprising a machine head tool table and a sewing workbench. The machine head tool table comprises a machine head mounting table plate, a first rack and a first connecting assembly. And the machine head mounting bedplate is fixedly arranged on the first rack. The sewing workbench comprises a feeding panel, a second rack and a second connecting assembly. And the feeding panel is fixedly arranged on the second rack. The sewing workbench is provided with a connecting station. The machine head tool table is detachably and fixedly connected into the connecting station of the sewing workbench through mutual cooperation of the first connecting assembly and the second connecting assembly of the sewing workbench.

The utility model discloses a speed changer of toy car, including speed changer body and drive arrangement, speed changer body includes driving rod, conversion subassembly, first gear train subassembly and second gear train subassembly, first gear train subassembly, conversion subassembly and second gear train subassembly are sequentially inserted on driving rod, the output of drive arrangement is connected with the input of driving rod, wherein, when first gear train subassembly is connected with conversion subassembly, driving rod drives first gear train subassembly to rotate, and first gear train subassembly is connected first output through first drive link, and speed changer is in acceleration state, when second gear train subassembly is connected with conversion subassembly, driving rod drives second gear train subassembly to rotate, and second gear train subassembly is connected second output through second drive link, and speed changer is in deceleration state. Children observe the rotation and switching process of gear intuitively in playing. Cultivate their interest in science and technology in the form of play.

The utility model discloses a kind of leap sieves, it is related to sandstone screening field, comprising: leap sieve main body, the leap sieve main body is used to the screening of sandstone;Adjustable material blocking device, the adjustable material blocking device is installed in the both sides of leap sieve main body screen, and the adjustable material blocking device of both sides is staggered arrangement, the adjustable material blocking device includes: rotating mechanism, the rotating mechanism is installed on leap sieve main body;Telescopic mechanism.The utility model utilizes the setting mode of rotating mechanism and telescopic mechanism cooperation, through the staggered arrangement of adjustable material blocking device, it is convenient to block sandstone on leap sieve main body screen, through the cooperative matching of rotating mechanism and telescopic mechanism, the double regulation function of adjustable material blocking device angle and length is realized, this double regulation mechanism can control the leap speed and movement trajectory of material according to material particle size and humidity characteristic, make screening efficiency improve.

The utility model relates to the technical field of unmanned aerial vehicle throwing, in particular to a throwing device of a bomb throwing unmanned aerial vehicle, which comprises an unmanned aerial vehicle body, four fixing frames are arranged on the outer surface of the unmanned aerial vehicle body, fan blade bodies are arranged at the upper ends of the four fixing frames, and fixing seats are arranged at the left part and the right part of the lower end of the unmanned aerial vehicle body. Fixing grooves are formed in the opposite surfaces of the two fixing seats, clamping grooves are formed in the inner walls of the two fixing grooves, fixing devices are arranged in the two fixing grooves, a placing mechanism is arranged at the lower ends of the two fixing devices jointly, and supporting frames are arranged in the middle of the left side of the lower end and the middle of the right side of the lower end of the unmanned aerial vehicle body. According to the throwing device of the bomb-dropping unmanned aerial vehicle, the second spring is arranged, elastic force of the second spring is used for resetting, so that bomb materials are pushed backwards, the bomb materials move through the bomb-dropping opening for bomb dropping, single throwing or combined throwing is facilitated, and installation and operation are convenient.

The present invention provides an in-situ collection device for deep-sea microplastics and an integrated detection system thereof, and relates to the technical field of seawater microplastic detection devices. The in-situ collection device for deep-sea microplastics and an integrated detection system thereof include a housing and a fixed box, wherein the fixed box is fixedly connected to the top of the housing, the top of the fixed box is fixedly connected to a top plate, a plurality of filter cartridges are fixedly connected inside the housing, a plurality of filter cartridges are fixedly connected inside the water inlet pipe, a connecting plate is fixedly connected inside the housing, the water inlet pipe is connected to the connecting plate, a suction pump is fixedly connected inside the housing, and a filtered water volume detection device, a laser spectrum scanning device, a time series converter and a filter membrane are fixedly connected inside the housing. The in-situ collection device for deep-sea microplastics and an integrated detection system thereof are conducive to preventing the mixing of seawater samples, and blocking large debris to prevent damage to the device.

The utility model discloses a cylinder head cover which comprises a cover body, in a first direction, the cover body is provided with an air inlet side and an air outlet side, the air inlet side is provided with a first timing positioning installation portion, the air outlet side is provided with a second timing positioning installation portion, and the first timing positioning installation portion and the second timing positioning installation portion are arranged in a spaced mode. The first timing positioning and mounting part is arranged on the air inlet side, and the second timing positioning and mounting part is arranged on the air outlet side, so that the camshaft on the air inlet side and the camshaft on the air outlet side can be subjected to timing positioning respectively, the assembly precision of an engine can be improved, the engine can work better, and the service life of the engine is prolonged. And the first timing positioning mounting part and the second timing positioning mounting part are arranged at an interval, so that other corresponding parts of the cylinder head cover can be avoided conveniently, and arrangement and arrangement are facilitated.

The application belongs to the technical field of soft robots, and discloses a soft robot for growing to grab objects in a limited space based on a nested structure. The soft robot comprises a first cylinder film, a second cylinder film, an inflation mechanism, a feeding mechanism and a recycling mechanism. The first cylinder film and the second cylinder film are hollow cylinders. The second cylinder film is arranged in the hollow cavity of the first cylinder film and attached to the inner wall of the first cylinder film. The hollow cavity of the second cylinder film is used for covering and taking back the objects to be grabbed. The first cylinder film and the second cylinder film have the same structure. The cylinder walls of the two comprise an inner film and an outer film. A sealed cavity is formed between the inner film and the outer film for inflation. The outer film of the first cylinder film and one end of the inner film of the second cylinder film are fixed. The inner film of the first cylinder film and the outer film of the second cylinder film are connected to the feeding mechanism. The application solves the problem of grabbing objects in a limited space.

The utility model discloses a multi-color gamut high-brightness backlight source which comprises a light bar, a light guide plate is fixedly connected to the side surface of the light bar, a reflecting plate is arranged under the light guide plate, a mounting frame is arranged over the light guide plate, a diffusion plate is fixedly connected to the inner side wall of the mounting frame, a connecting frame is arranged in the mounting frame, and the connecting frame is fixedly connected with the reflecting plate. The inner side wall of the connecting frame is fixedly connected with a liquid crystal screen; a sealing frame is slidably connected to the inner side wall of the limiting frame, a silica gel box is slidably connected to the inner side wall of the sealing frame, silica gel is arranged in the silica gel box, and a limiting rod is slidably connected to the inner side wall of the silica gel box. By means of the structure, heat of the light guide plate and the reflecting plate is conducted out through the silica gel, the silica gel is arranged in the silica gel box, the silica gel box is limited through the limiting rods and the limiting frame, the silica gel box is convenient to disassemble and assemble, the silica gel box and the silica gel in the silica gel box can be taken out of the sealing frame at any time, and therefore the silica gel is convenient to replace; the heat dissipation effect of the device is constantly kept.