348results about How to "Avoid Dust Problems" patented technology

The invention discloses a universal mainframe case bracket device for operation of a computer. The universal mainframe case bracket device comprises a device base; a brake axle is arranged on the device base in a penetrating mode; the brake axle is rotationally matched with the device base through a coil spring; a left brake rod and a right brake rod are disposed at the two ends of the brake axle correspondingly; the left brake rod is integrated with a rotary rod; a left side frame and a right side frame are disposed on the two sides of the device base correspondingly; a movable rod is connected to the right side frame in a threaded mode; a clamping plate is disposed at one end of the movable rod; a left lifting rod and a right lifting rod are disposed on the upper portions of the left side frame and the right side frame correspondingly; the top of the left lifting rod is connected with a left top frame; the top of the right lifting rod is connected with a right top frame; and the left top frame and the right top frame are matched with dust-proof cloth. The universal mainframe case bracket device for operation of the computer is quite convenient to move and position and easy to operate, can provide good fixing and shock absorption conditions for a mainframe case and prevent dust from falling on the top of the mainframe case and achieves humanized design.

The invention discloses a smokeless and constant-temperature control method and device for moxibustion. A smokeless and constant-temperature control scheme is adopted, a moxibustion device matched with the scheme is designed, because the moxibustion device can automatically make a moxa stick go up and down, automatic temperature control can be achieved, it is ensured that the temperature of moxibustion is constant, and the skin is prevented from being burnt; multi-freedom-degree all-directional rotation is achieved through a universal shaft, moxibustion treatment can be carried out on different parts of the body, and operation is convenient; due to a grid-shaped ash receiving disk, the problem that ash falls off in the combustion process of the moxa stick can be solved, and the skin is prevented from being scalded in the moxibustion process; due to a filter device, the concentration of inhalable particles in air can be reduced, and the purpose of purifying the air is achieved.

The invention discloses a manual and automatic integrated smart double-control switch. The manual and automatic integrated smart double-control switch comprises a mounting slot which is formed in a wall body, wherein a mounting bottom plate is mounted at the bottom part of the mounting groove through screws; a telescoping rod is arranged in a telescoping groove of the mounting bottom plate; a double-control switch housing is connected to one end, far away from the mounting bottom plate, of the telescoping rod; a smart double-control element is arranged in the double-control switch housing; moving guide rails are arranged on two sidewalls of the mounting groove in the groove depth direction; two fixing grooves are formed in two sidewalls, toward the moving guide rails, of the double-controlswitch housing; a positioning plate is arranged at the sides, which are far away from each other, of the two fixing grooves. The manual and automatic integrated smart double-control switch is simplein structure, and novel in design; the double-control switch housing is mounted in a wall body, so that the elegant appearance is realized, and moreover, the double-control switch housing can be prevented from being damaged and is free of dust; and in addition, the double-control switch housing can be pulled out or put away into the mounting groove, and thus, the practicability is high.

The invention belongs to the field of vehicle maintenance equipment tool cabinets and particularly relates to a push-pull type lighting-tool cabinet. The push-pull type lighting-tool cabinet comprises an upper cover and a cabinet body which are integrally connected. The push-pull type lighting-tool cabinet is characterized in that the cabinet body is of a hollow structure, a plurality of push-pull type drawers arranged in an upper-lower manner are inserted into the cabinet body, and a travel switch and an LED lamp controlled to be turned on and off by the travel switch are correspondingly arranged on an inner wall of the cabinet body and correspond to the push-pull type drawers. When drawers are closed, an elastic pressure piece of the drawer disconnects an electric circuit, and the LED lamp is turned off; when the drawers are pulled open, the elastic pressure piece springs back to enable the electric circuit to be closed, and the LED lamp is turned on; by the arrangement, night lighting is provided, the LED lamp is convenient to turn on and off, and electricity is saved. Each gap between the drawers is 2.5mm-5mm, so that dust is prevented from falling in between the drawers.

The invention provides a wall-mounted air conditioner indoor unit. The indoor unit comprises a shell, a heat exchanger, a first air jetting part, a second air jetting part, a first air supply assemblyand a second air supply assembly; the shell comprises a cover shell and a front panel arranged in front of the cover shell, the front panel is provided with a first air supply port and a second air supply port which are in long circle shapes, and the shell is arranged obliquely downward relative to a supporting wall so as to make the air supply ports be inclined downward; the heat exchanger is arranged in the shell, and the position of the heat exchanger communicates with an air inlet; the first air jetting part is arranged in the first air supply port, the second air jetting part is arrangedin the second air supply port, the inner circumferential wall of the first air jetting part and the inner circumferential wall of the second air jetting part are provided with a first air jetting port and a second air jetting port which allow the air flow subjected to heat exchange to be discharged correspondingly, and the air flow subjected to heat exchange drives the air in center air draft hole of the first air jetting part and the air in the center air draft hole of the second air jetting part to be sent out obliquely downward; and the first air supply assembly and the second air supply assembly are arranged in the shell at intervals, and are used for providing heat exchange air flows for the first air jetting part and the second air jetting part respectively. According to the scheme,the air supply amount is increased, so that the temperature of the indoor temperature is reduced integrally and uniformly.

The present invention relates to an arrangement device, in particular, a seismograph hidden type arrangement device for natural gas exploration. The seismograph hidden type arrangement device can be specifically used for arranging a seismograph and can radiate heat timely. The seismograph hidden type arrangement device for natural gas exploration of the invention comprises a mobile box and the like; the lower part of the mobile box is provided with a lifting mechanism; the top of the lifting mechanism is provided with a lifting rod; the lifting rod is located in the mobile box; and the upper part of the mobile box is provided with an opening / closing mechanism. With the seismograph hidden type arrangement device of the invention adopted, the seismograph can be facilitated to better exploredata; the service life of the seismograph can be prolonged; and a condition that magnets cannot completely close the mobile box can be avoided. After not being used any more, the seismograph can be properly arranged through the arrangement device of the invention, and therefore, dust can be prevented from falling on the seismograph, the service life of the seismograph can be prolonged, and therefore, the data test of the seismograph can be more accurate.

The invention provides an indoor unit of a wall-mounted type air conditioner. The indoor unit comprises a housing, a gas spraying part and an air feeding assembly, wherein air inlets are separately formed in two sides of a case of the housing; a long circular air feeding hole is formed in the upper part of a front panel of the housing; the housing is downwards arranged in an inclined mode for supporting a wall body, so that the air feeding hole faces towards the inclined lower side; the gas spraying part is arranged in the air feeding hole, a ring-shaped outer wall of the gas spraying part anda ring-shaped inner wall of the gas spraying part co-define an air supply cavity, and a gas spraying hole is formed in the edge on which the ring-shaped outer wall is connected with the ring-shaped inner wall for forwards spraying out gas flow of the air supply cavity, and sucking air behind the air feeding hole to pass through the air exhaust hole to feed out towards the inclined lower side; andthe air feeding assembly comprises a centrifugal fan and an air guide part, and the centrifugal fan is configured to introduce ambient air from the air inlets to exchange heat with a heat exchanger,and the air guide part is used for exhausting heat-exchanged air flow to the air supply cavity. The indoor unit of the wall-mounted type air conditioner is compact in structure, is soft in air feedingand is good in comfort.

The invention discloses a kitchen knife placement rack, which comprises a rack body, and four knife placement slots are equidistantly arranged in the rack body, and two slots are symmetrically arranged on the inner wall of each knife placement slot, and each Each of the slots is connected with a T-shaped clamp block through a spring, and the lower ends of the four tool placement slots are jointly provided with a water tank, and one side of the frame body is provided with a water pipe, and the water pipe communicates with the water tank , the water pipe is provided with a valve, one side of the frame body is provided with a roller clamping drive mechanism, the roller clamping drive mechanism is provided with a filter screen, and the end of the filter screen away from the frame body is provided with The handle, the frame body is provided with an exhaust device, the upper end of the exhaust device is provided with a broken-line air pipe, and the broken-line air pipe communicates with the water tank, and an exhaust pipe is also provided on the exhaust device. The invention has the advantages of stable structure, convenient use, convenient taking, firm fixing of the knives, air-drying of the knives, and is worthy of popularization.

The invention provides a rubber based granular material and a preparation method thereof, and more specifically relates to the technical field of automobile components. The total mass of raw material components of the rubber based granular material is used as a reference for calculation, and the rubber based granular material comprises the following raw material components in percentages by mass: 7-12% of butyronitrile rubber, 2-5% of styrene butadiene rubber, 3-7% of carbon black, 1-4% of sulphur, 1-3% of a vulcanization accelerator, and 70-85% of a multielement heat-conducting composite powder. The rubber based granular material can replace brass fiber in a friction material in equal proportion, and friction performance and abrasiveness of the prepared friction material are nearly not changed; at the same time, compared with the brass fiber, the noise reduction performance of the rubber based granular material is better, comfort level of a pedal in a braking process is greatly improved, initial performance is excellent when the addition amount is small, and running-in period is shortened; the rubber based granular material has the advantages of cleaning, and environmental protection without pollution.

The invention discloses a fixing device for a stage sound. The fixing device comprises a base, a support platform and a rotary platform, wherein a cylinder seat is arranged on the base, a cylinder isembedded into the cylinder seat, the support platform is fixedly arranged on an output shaft at the tail end of the cylinder, the rotary platform is arranged on the support platform, the lower centerof the rotary platform is connected with one end of a rotating shaft, the other end of the rotating shaft penetrates through the support platform, a motor is arranged at the bottom of the rotating shaft, telescopic rods are arranged at the upper four edges of the rotary platform, a control box is arranged on the base, and a human body infrared sensor, an indicator lamp module, a storage module anda controller are arranged in the control box; and the human body infrared sensor, the indicator lamp module and the storage module are all electrically connected with the controller. Compared with the prior art, the fixing device can be controlled according to operation requirements during use, is quick in operation, time-saving, steady in overall structure and stable in operation, does not produce any impact damage, and at the same time, is simple in structure manufacture, convenient in manual processing and assembly and low in production cost.

The invention relates to an automatic shaking type bed, in particular to an medical automatic shaking type bed for a postpartum baby in the obstetrics and gynecology department. The technical purposeof providing the medical automatic shaking type bed which can be shaken when the baby needs to fall asleep and can attract the baby's attention so as to make the baby not cry for the postpartum baby in the obstetrics and gynecology department is achieved. In order to achieve that technical purpose, the medical automatic shaking type bed for the postpartum baby in the obstetrics and gynecology department comprises a mounting rack and the like; a driving mechanism is arranged on the left portion of the mounting rack, a moving mechanism is arranged on the lower portion of the mounting rack, and the driving mechanism cooperates with the moving mechanism. According to the medical automatic shaking type bed for the postpartum baby in the obstetrics and gynecology department, the effects that when the baby needs to fall asleep, the bed can be shaken, and the baby's attention can be attracted so as to avoid crying are achieved; the driving mechanism is arranged, the baby bed does not need to be shaken manually, the emotion of the baby is relieved, and a pregnant woman just giving birth can use the bed conveniently.

The invention provides a wall-mounted air conditioner indoor unit. The indoor unit comprises a casing, a heat exchanger, a first air spraying part, a second air spraying part, a first air supplying assembly and a second air supplying assembly; the casing comprises a housing and a front panel arranged in front of the housing; a long and round first air supplying opening and a long and round secondair supplying opening which are formed at an interval are formed in the front panel; side wall air inlets are formed in two sides of the housing; panel air inlets are formed between the first air supplying opening and the second air supplying opening; the heat exchanger is arranged in the casing; the first air spraying part is arranged in the first air supplying opening; the second air spraying part is arranged in the second air supplying opening; a first air spraying opening and a second air spraying opening which supply air flows after heat exchange are correspondingly formed in the inner circumferential wall of the first air spraying part and the inner circumferential wall of the second air spraying part; heat-exchange air flows drive the ambient air in central air drawing holes of thefirst air spraying part and the second air spraying part to be sent out; the first air supplying assembly and the second air supplying assembly are arranged inside the casing at an interval and are used for providing the heat-exchange air flows for the first air spraying part and the second air spraying part correspondingly. According to the scheme, the air supplying volume is increased, and the indoor temperature is reduced in an overall even manner.

The invention discloses a foldable LED table lamp. According to the foldable LED table lamp, a plurality of LED lamps are arranged on an LED lamp body in an arrayed mode; a folding frame is rotatably connected to one end of the LED lamp body; a lamp holder is rotatably connected to the position below the folding frame; a USB plug extending outwards and a groove for containing the USB plug are arranged at the end, away from the folding frame, of the lamp holder, a first connecting column is arranged at the end, close to the USB plug, of the groove, and the USB plug is rotatably connected to the groove through the first connecting column; a second connecting column is arranged at the end, away from the first connecting column, of the groove, and is rotatably connected with a cover plate covering the surface of the groove. The USB plug extending outwards and the groove for containing the USB plug are arranged at the end, away from the folding frame, of the lamp holder, the USB plug is rotatably connected with the groove through the first connecting column, the second connecting column is rotatably connected with the cover plate covering the surface of the groove, no additional wire or plug is needed, and the advantages that fast charging is achieved through the USB plug, and storage and cleaning are convenient are achieved.

The invention discloses a portable vehicle-mounted air purifier which comprises a shell, a suction fan, supporting legs, a control panel, a filter layer mechanism and a photocatalyst filter screen, wherein the shell is cylindrical; a tangent plane is arranged on the side surface of the shell; the control panel is arranged on the tangent plane; the upper surface of the shell is provided with an opening in the position of a center shaft; the suction fan is arranged in the shell through a lifting mechanism; the annular filter layer mechanism and the photocatalyst filter screen are sequentially arranged in the shell along the direction far from the center shaft; annular air outlets are formed in the side surface of the shell; a plurality of exhaust fans are arranged in the shell; the inlets of the exhaust fans face towards the center shaft of the shell, and the outlets of the exhaust fans face towards the air outlets; and a plurality of supporting legs are arranged on the lower surface of the shell at intervals. The portable vehicle-mounted air purifier overcomes the problems of the vehicle-mounted purifier in the prior art that the purifying effect is poor, the direction of each air outlet is fixed, and thus the air in a vehicle can not effectively circulate.

The invention relates to a storage device, in particular to a powder injection and diluent storage device for medicine packaging, and aims to provide a powder injection and diluent storage device for medicine packaging, which can store different types of powder injection and diluent and further can place the powder injection and the corresponding diluent thereof at the same position. In order to solve the technical problem, the invention provides the powder injection and diluent storage device for medicine packaging. The powder injection and diluent storage device comprises a storage box and the like, wherein the middle part in the storage box is symmetrically connected with first partitions; moving mechanisms are uniformly arranged inside the storage box; and placing mechanisms are arranged on all the moving mechanisms. According to the powder injection and diluent storage device for medicine packaging, by the arrangement of the moving mechanisms, first moving boxes can be conveniently pulled out for placing the powder injection and the diluent for medicine packaging.

The invention discloses a testing device for computer software development. The testing device comprises a protection box, wherein the top of the protection box is of an opening structure, a box cover is arranged at the top of the protection box, a lifting plate is slidably mounted in the protection box, a testing device body is fixedly mounted at the top of the lifting plate, four connecting columns are fixedly mounted at the top of the testing device body, the four connecting columns are symmetrically arranged in pairs, and the top ends of the four connecting columns are fixedly connected with the bottom of the box cover. The test device is reasonable in design and good in practicability, the test device body can be conveniently lifted out of the protection box for use, the protection box can be stably fixed to the ground, the test device body is not prone to displacement when used, the test device body can be conveniently stored in the protection box for storage, the test device body is effectively protected, the test device body is prevented from being exposed in the external environment for a long time to be damaged by dust falling or collision, and the service life of the test device body is prolonged.

The invention discloses a glass ware containing rack capable of realizing effects of clearing dust. The glass ware containing rack comprises a storage box, guide rods are arranged in the storage box,a guide sleeve sleeves each guide rod, a fixed plate is arranged on each guide sleeve, a placing groove device is arranged on each fixed plate, a screw rod nut is installed on the lower side of each guide sleeve, a driving motor is installed below each guide sleeve, each driving motor is connected with a driving screw rod nut through a corresponding driving screw rod, a dust removing gas pipe is arranged above each fixed plate, the dust removing gas pipes are connected with a first fan through a first ventilation pipe, a ventilation hole is formed in each of the two sides of each fixed plate,a second fan is arranged on the outer side of the storage box, and the second fan is connected with a corresponding ventilation hole through a second vent pipe. The device has the advantages that thedevice is convenient and quick to operate in taking and placing the glass ware, a PLC controls the power loss of electromagnet when the glass ware is placed, a dust blocking cover is put down, dust isprevented from entering a containing groove, and the purpose of cleaning is achieved through the cooperation of the first ventilation pipe and the second fan.

The invention discloses a wall-mounted indoor air humidity detection device capable of adjusting humidity, comprising a device main body, a humidity sensor, a water pump, a controller, a fan, an air outlet, a rotating shaft, a connecting rod and a Velcro. The back of the main body is fixed with a mounting frame, the humidity sensor is installed in the middle of the main body of the device, the water pump is installed in the water tank, the controller is installed on the left side of the water tank, the fan is installed at the bottom of the main body of the device, the The rotating shaft is arranged on the front side above the main body of the device, the connecting rod is arranged on the top and the bottom of the main body of the device, and the Velcro is fixed on the front end of the dustproof curtain. The wall-mounted indoor air humidity detection device that can adjust the humidity, the humidity sensor, the water pump, the controller, the fan and the heating pipe are all electrically connected, and can be sensed by the humidity sensor, and then automatically realize the adjustment of the air humidity. It can improve the indoor air humidity in time, and the use effect is good.

The invention provides a swinging type fertilizer spreader. The swinging type fertilizer spreader comprises a bracket, a fertilizer box, a bearing hopper, a transmission device and a discharging bucket, wherein the fertilizer box is mounted at the upper part of the bracket; the transmission device is mounted at the lower part of the bracket; the transmission device is provided with a flywheel which can rotate around the horizontal axis, a swinging platform which can rotate around the vertical axis, and a fork which is connected with the flywheel and the swinging platform; the bearing hopper is fixed above the swinging platform and is adjacent to a lower opening of the fertilizer box; the discharging bucket is fixed behind the swinging platform and is intercommunicated with the inner part of the bearing hopper. According to the swinging type fertilizer spreader, the rotation of the horizontal axis is converted into the swinging of the vertical axis and the match with a power output shaft of a tractor is realized, so that the aim of spreading fertilizers through a swinging manner is realized.

The invention discloses an automatic automobile gear shifting inhaul cable assembly and a fast assembling method. The automatic automobile gear shifting inhaul cable assembly comprises a steel wire rope, a protection pipe, a first connector, a second connector, damping blocks, a length adjusting mechanism, a first protection pipe connector mechanism and a second protection pipe connector mechanism. The damping blocks are fixed to the protection pipe in a sleeving manner through bonding of glue. The length adjusting mechanism comprises an adjusting spring, an adjusting screw and an adjusting lock block. The automatic automobile gear shifting inhaul cable assembly can overcome defects existing in existing automatic automobile gear shifting inhaul cable assemblies, and automatic automobile gear shifting work is conveniently, comfortably and accurately controlled. The automatic automobile gear shifting inhaul cable assembly is adjustable in overall length and wider in application range. The novel length adjusting mechanism is additionally arranged so that the requirement of the inhaul cable assembly for the overall length adjustability can be effectively met; the dismounting, mounting and adjusting processes are very simple and convenient; and according to the fast assembling method for the automatic automobile gear shifting inhaul cable assembly, the assembling process is very simple and convenient, and fast assembling and forming can be achieved without the aid of special tools.

The invention discloses a double-network eight-serial port server with terminals. The server comprises a shell, a main controller, a serial port expansion circuit, serial port processing circuits, a network processing circuit and network interface circuits, wherein the main controller, the serial port expansion circuit, the serial port processing circuits, the network processing circuit and the network interface circuits are respectively arranged in the shell; the serial port expansion circuit and the network processing circuit are respectively connected with the main controller; the serial port expansion circuit is connected with at least eight serial port processing circuit; the network interface circuits are respectively connected with the network processing circuit; a CPLD control circuit is connected between the serial port expansion circuit and the main controller; a plurality of connection terminals are arranged on the side surface of the shell; a baffle plate is hinged on the side surface, where the connection terminals are arranged, of the shell; the baffle plate is located above the connection terminals; and the baffle plate can lean against the connection terminals. The double-network eight-serial port server is capable of overcoming the problems that the transmission efficiency is low and the shell of the serial port server is single in function as the serial port server in the prior art is bad in anti-interference ability and a plurality of serial ports cannot be well transmitted in parallel.

The invention discloses a test tube temporary storage box with a sealing function. The test tube temporary storage box comprises a rectangular box body, a Number-one rectangular opening is formed in the upper surface of the rectangular box body, the lower surface of the rectangular box body is provided with a temperature control chamber, the inner side surface of the temperature control chamber isprovided with a refrigeration sheet and a temperature sensor, the center of the inner lower surface of the temperature control chamber is provided with a small-sized fan, a number-two rectangular opening which is communicated with the temperature control chamber is processed on the lower surface of the rectangular box body, a protection screen is embedded into the number-two rectangular opening,a horizontal supporting plate is arranged in the rectangular box body, four corners of the lower surface of the horizontal supporting plate are respectively provided with a damping spring which is inlap joint with the inner lower surface of the rectangular box body, a horizontal foam plate is laid on the upper surface of the horizontal supporting plate, and the edge of the upper surface of the horizontal supporting plate is provided with a rectangular supporting frame. The test tube temporary storage box with sealing function disclosed by the invention has the beneficial effects that a test tube can be temporarily stored in a sealing manner, and the test tube or substances which are temporarily stored in the test tube can be prevented from being dusted or cross infected. The test tube temporary storage box is safer and more convenient.

The invention discloses a mixing machine capable of preventing flying dust of building material processing powder. The mixing machine comprises a base, secondary uniformizing cavities and a mixing cavity; an active motor is arranged in the middle of the base; matched motors are arranged on the left side and the right side of the base correspondingly; a transmission belt is arranged above the matched motors; a supporting frame is arranged above the base; a transmission shaft is arranged above the active motor; a uniformizing disk is arranged above the transmission shaft; a mounting sleeve is fixed in the middle of the uniformizing disk; the outer side of the mounting sleeve is welded with a switch-plate; a rotating shaft is arranged in the middle of the secondary uniformizing cavity; the secondary uniformizing cavities are positioned on the left side and the right side of the uniformizing disk; a supporting column is fixed in the mixing cavity; and the mixing cavity is positioned abovea rotating disk. According to the mixing machine capable of preventing flying dust of the building material processing powder, efficient mixing is realized, the powder is mixed uniformly and finely, alarge amount of residues of the powder in the mixing machine are avoided, manual adjustment can be conducted during feeding, and the powder flying problem is effectively avoided.

The invention discloses a multifunctional stage sound box convenient for moving and lifting, which comprises a loudspeaker, a sound box body, LED colorful lamps, a rotating platform, a bearing base and a bottom plate, wherein the sound box body is provided with the loudspeaker; a plurality of LED colorful lamps are arranged on the outer surface of the sound box body; the bottom end of the sound box body is supported and connected through the rotating platform; a buffer pad is arranged between the sound box body and the rotating platform; the rotating platform is fixedly connected with a telescopic structure through a screw bolt and nut; a turbine is mounted on the telescopic structure and the turbine downward penetrates the bottom plate and is provided with a limiting block so that a plunger rod and a cylinder structure are more compact; the back surface of the sound box body is embedded with LED colorful lamps and an operation switch so that the appearance of the sound box is beautiful and elegant; a protective cover is covered above the sound box device, thereby avoiding the dust from falling onto the sound box device to further affect the auditory effect; the anti-interference capability of the sound box can be improved; meanwhile, the dust can be prevented from entering the sound box, thereby improving the sound effect of the sound box on the stage.

The invention discloses a joint training analogue simulation demonstration verification workbench which comprises a base. A workbench is fixedly installed on the base, a main machine cabinet is arranged on the front side of the workbench, a display cabinet is arranged on the rear side of the workbench, heat dissipation cabinets are symmetrically arranged on the left side and the right side of the workbench, and a placement groove is formed in the front side of the top of the workbench. Sliding covers are symmetrically and fixedly mounted on the surface of the workbench above the placement groove, a driving mechanism is arranged below the sliding covers, a display mechanism is arranged in the display cabinet, a display hole is formed in the top of the display cabinet corresponding to the display mechanism, a heat dissipation fan is fixedly mounted on the inner wall of one side, close to the main cabinet, of the heat dissipation cabinet, and a plurality of heat dissipation holes are formed in the outer wall of one side, away from the main cabinet, of the heat dissipation cabinet. The sliding covers are driven by the driving mechanism to horizontally slide along the surface of the workbench and used for shielding the control keys and the buttons in the placement groove, meanwhile, the sliding covers drive the display mechanism to move up and down through the driving rod when horizontally moving, the displayer is stored in the display cabinet when not used, dust falling of the displayer and the control keys and the buttons is avoided, and the demonstration workbench is kept clean.

The invention discloses an anti-dismantle tee operated without switching off an air source. The anti-dismantle tee comprises a first channel (1), a second channel and a third channel which are communicated with one another. A plug (2) is arranged in the first channel (1). A sealing piece (3) is arranged at an inner opening of the first channel (1). The anti-dismantle tee is characterized in that the sealing piece (3) comprises a sealing ring (3.1) made of elastic materials and a connecting piece (3.2) used for being connected with an opener; the sealing ring (3.1) is installed in the inner opening of the first channel (1) in an axially-limited mode, and at least one radial annular groove (3.1.1) is formed in the outer side wall of the sealing ring (3.1); the connecting piece (3.2) is connected with the middle of the sealing ring (3.1). According to the anti-dismantle tee, the aperture of the first channel with the sealing piece is increased to be greater than that of a ball valve element channel connected with the first channel, so that flow of the first channel is increased.

The invention provides an air return assembly and an indoor unit panel assembly. The air return assembly comprises an air return opening, a filter screen, a winding mechanism and a traction mechanism, wherein the filter screen is movably arranged on the air return opening and used for filtering away dust in air; the winding mechanism is arranged on one side of the air return opening and connected with the first end of the filter screen, and the winding mechanism is used for winding the filter screen; the traction mechanism is arranged on the other side, opposite to the winding mechanism, of the air return opening and connected with the second end, away from the first end, of the filter screen, and the traction mechanism is used for pulling the filter screen to be unfolded. According to the technical scheme, on one hand, dust falling when the filter screen is unfolded can be avoided; on the other hand, when the filter screen needs to be cleaned, the filter screen can be completely taken down by detaching the winding mechanism, and then the filter screen is convenient to clean and replace. After being cleaned, the filter screen can be reused after being wound around the winding mechanism and correspondingly connected with the traction mechanism.

The invention relates to a magnetic separation device, in particular to rare earth iron ore magnetic separation equipment. The rare earth iron ore magnetic separation equipment achieves oscillating and small-batch magnetic separation of iron ore and has high magnetic separation efficiency. The technical scheme is that the rare earth iron ore magnetic separation equipment comprises a small rack, afirst rotating shaft, a motor, a rotating wheel, sawteeth, a moving frame, a first pulling rope, a fixed pulley, a second pulling rope, a first spring and the like; through holes are arranged in the lower left wall and the lower right walls of a box body; moving rails are symmetrically arranged on the left and right sides of the bottom of the box body; collecting grooves are symmetrically arrangedon the left and right sides of the bottom of the box body; and the collecting grooves are located above the moving rails. The equipment achieves the effect of oscillating and small-batch magnetic separation of the iron ore and high magnetic separation efficiency; through a lower hopper, a small batch of rare earth is released, the rare earth is oscillated and dispersed on a sliding plate, and theiron ore is attracted on the sliding plate and a baffle; in the process, a tapping device works to knock the baffle so that the iron ore can be quickly collected; and the magnetic separation efficiency is high.