77results about How to "Simple structure, safe and reliable" patented technology

The invention provides a gas drive type underwater disconnecting device, mainly comprising three parts including a high pressure gas cylinder assembly, a high pressure electromagnetic valve assembly and a mechanical body assembly, wherein the three parts are connected through a stainless steel high pressure steel pipe and a high pressure pipe joint. A three-way ball valve is installed between the high pressure gas cylinder assembly and the high pressure electromagnetic valve assembly, and a one-way valve is installed between the high pressure electromagnetic valve assembly and the mechanical body assembly. The high pressure gas cylinder assembly is used for storing high pressure gas, the high pressure electromagnetic valve assembly is used for controlling the on-off of the high pressure gas in a pipeline, the mechanical body assembly is used for separating machinery and cables of a manipulator and underwater operation equipment, the three-way ball valve is used for changing gas circuits, and the one-way valve is used for preventing sea water from flowing into the gas cylinder after the manipulator is disconnected. When the underwater operation equipment normally works, the gas drive type underwater disconnecting device can provide accurate installation positioning for hand and shoulder joints of the manipulator and can be reliably connected with the underwater operation equipment. When the manipulator is in a dangerous condition, reliable separation of the manipulator and the underwater operation equipment can be realized so that the underwater operation equipment can be separated from the dangerous condition.

The invention relates to a method and an architectural structure for planting virescence on a rock mountain body. The method for planting virescence on the rock mountain body is characterized by comprising the following steps of: (1) drilling blind holes according to the set specification and interval on the slope of a rock mountain body, inserting reinforcing steel bars into the blind holes, fixing the reinforcing steel bars into the blind holes and solidifying with the rock mountain body by cement or concrete; (2) taking the reinforcing steel bar extending out of the slope of the rock mountain body as a support, and constructing bags on the slope of the rock mountain body by the concrete; (3) filling planting soil into the bags, and planting plants in the planting soil; (4) overlaying a water pipe from top to bottom along the slope of the rock mountain body, arranging water injection nozzles on the water pipe, which are positioned on the bags, and enabling the water injection nozzles to be positioned above the bags; (5) continuously watering the plants in fixed time or at an variable interval to provide water required by plant growth so as to ensure the normal growth of the plant. According to the invention, an anchor rod is arranged on the slope of the rock mountain body to form a connection structure by taking the reinforcing steel bars as the support; the bags are evenly constructed from top to bottom on the slope of the rock mountain body by concrete, soil is filled into the bags, and plants are planted; therefore, multi-layer ecological composite virescence is formed on the slope; the purposes of slope protection, virescence and ecological environment protection are achieved.

The invention discloses a lifter safety door comprising a door frame, a door body, an upper locking device and a lower locking device, wherein the door body is connected with the door frame, the upperlocking device and the lower locking device are used for locking the door body and the door frame, and a connecting rod is connected between the upper locking device and the lower locking device. Thelifter safety door is provided with a safety lock and can be opened by driving the connecting rod through cancelling the locking firstly; in addition, a locking mechanism is positioned on the outer side of the door body and the lifter safety door can not be opened by mistakes, thereby eliminating potential safety hazards and achieving great economic value, simple structure as well as safety and reliability.

The invention provides a 3D printing device applicable to pneumatic extruding low-temperature platform control, and belongs to the field of tissue engineering technology and biological 3D printing technology. The 3D printing device comprises a bottom plate, a side plate, a nozzle device, a three-dimensional moving mechanism, a forming platform cooling device and a forming platform control mechanism, wherein the nozzle deice is mounted on a Z-axis slide block in a thread connection manner; the forming platform cooling device is fixedly mounted on a slide block in the forming platform control mechanism through a cap; the three-dimensional moving mechanism can realize moving in X, Y and Z directions; the forming platform cooling device can be controlled through the forming platform control mechanism to move in the X direction; and a water inlet and a water outlet are formed in the bottom part of the forming platform control mechanism. According to the 3D printing device, an extruding forming technological system is adopted; the temperature of a forming platform is controlled so as to print a scaffold tissue with high mechanical property; a method for cooling the forming platform through water circulating is carried out to ensure a low-temperature working environment for the extruding of biologic materials, and thus a solution is promoted to crosslink to form hydrogel, and as a result, the mechanical property and the integrity of a scaffold can be improved.

The invention discloses a low-cost alternating-current input overvoltage protection circuit and a switching power supply. The protection circuit comprises a voltage sampling end which is used for being connected to the output end of an AC (Alternating Current) / DC (Direct Current) module of a power supply, a high-voltage suppression diode, a divider resistor, a bias resistor and a switching tube, wherein the control end of the switching tube is connected to a series-connection joint of the divider resistor and the bias resistor so as to receive a high electric level for switching on the switching tube; one end of a switching channel of the switching tube is grounded, and the other end of the switching channel is used for being connected with the feedback input end of a power supply control chip. According to the invention, the high-voltage suppression diode is used as a detecting switch for use, and can be broken down when the input is extremely high to provide a bias voltage for the bias resistor for switching on the switching tube and quickly pulling down the voltage at the feedback end of a control chip, so that the control chip is controlled to stop working; a self-recovery function also can be realized after high voltage, so that detection protection for input overvoltage is realized by only four simple parts; moreover, the protection circuit is simple, safe and reliable in structure, low in cost and easy for wide popularization and application.

A laser mosquito defense system is used for defending against mosquitoes in indoor places such as homes and hotels. The invention is aimed at providing the laser mosquito defense system which is smalland simple, convenient to install and low in cost. According to the first scheme, two parallel reflecting plates are adopted; according to the second scheme, three reflecting plates are adopted to form a door hole shape and are installed at a window, a door or other mosquito entrances, a dense infrared scanning induction optical net and a dense laser net are formed after multiple times of reflecting back and forth, the system will be triggered and mosquitoes will be shot dead when mosquitoes enter in any direction, the structure is simple, safe and reliable, cost is low, point shooting is changed into sweep shooting, radar positioning and aiming guiding are not needed, mosquitoes can be shot dead only with blind shooting, passive shooting is changed into active defending, and no mosquitoes can enter a room if only the mosquito entrance is held.

The invention relates to a method for preparing aldehyde by hydroformylation of low light olefins, which solves the problems that the investment cost of stirring equipment is high, equipment fault is easy to generate, safe and stable operation of a reactor is influenced, a cycle reaction solution can interfere with the stirring effect, and the unevenness of concentration gradient and temperature is easily formed by the bubbling tower reactor. According to the invention, low carbon olefin and synthetic gas containing hydrogen and CO respectively pass through a liquid inlet 4 and an air inlet 5 for supplying to a jet reactor, the jet reactor comprises an air outlet 1, a liquid jet apparatus 2, a gas distributor 3, the liquid inlet 4, the air inlet 5 and liquid outlets 6; wherein the air inlet 5 and the liquid inlet 4 are positioned at the bottom of the reactor, the air outlet 1 is positioned at top of the reactor, and the liquid outlets 6 are symmetrically placed at two sides of a lower sealing head of the reactor; and the liquid jet apparatus 2 is positioned on the gas distributor 3; so that the technical scheme better solves the problems. The method can be used for industrial production for preparing aldehyde by hydroformylation of low light olefins.

The invention discloses a carbon fiber heating piece and a preparation method thereof. The carbon fiber heating piece comprises electrode leads, and a lower insulated coating layer, a carbon fiber layer in a net-shaped structure, electrode current-carrying bars and an upper insulated coating layer which are arranged from bottom to top, wherein the electrode current-carrying bars are arranged at two ends of the carbon fiber layer, and the electrode current-carrying bars are electrically connected with an external power source through the electrode leads. The preparation method comprises the following steps: carbon fiber wires are distributed on the lower insulated coating layer to form the carbon fiber layer in the net-shaped structure, the electrode current-carrying strips are pressed on two ends of the carbon fiber layer, the upper insulated layer is laid, and after bonding treatment, the electrode leads are welded at the corresponding two ends of the electrode current-carrying bars. The preparation process of the heating piece is simple, the production cost is low, and the net-shaped carbon fiber wire structure formed by a plurality of specially arranged diamond lattices has the advantages of simple structure, strong reliability, small difference between heated zones, large heating area and the like. The carbon fiber heating piece is suitable for being applied in the fields of heating and health care of far-infrared radiation.

The invention relates to a method for reinforcing the mixing effect of a hydraulic reaction apparatus, and mainly solves the problems of unsatisfactory gas-liquid and liquid-liquid mixing effect and complex structure in the prior art. The hydraulic reaction apparatus is used in the low pressure liquid phase synthesis of acetic acid from methanol. The hydraulic reaction apparatus comprises a liquid jet device 2 and a gas distributor, and the gas distributor is positioned below the liquid jet device 2. The above technical scheme well solves the problems, and the method can be used in the industrial production of the low pressure liquid phase synthesis of acetic acid from methanol.

The invention relates to a running mechanism for a suspension type bridge inspection trolley, and belongs to the field of running devices of the suspension type bridge inspection trolley. The running mechanism is innovative in structure and concise in mode, a left running wheel and a right running wheel are symmetrically installed on the upper surfaces of the lower edges of the two sides of a running track, and connected with an n-shaped frame hinge pin of a main frame through connecting rods and connecting bases; a driving mechanism is composed of a motor and a manual chain driving mechanism, the motor and the manual chain driving mechanism are correspondingly connected with wheel shafts of the two running wheels respectively, the motor or the manual chain driving mechanism is controlled to achieve driving running of the running wheel on the corresponding side and driven running of the running wheel on the other side, running of the running mechanism which is driven by the motor or the manual chain driving mechanism and carries the main frame along the running track is achieved, when the motor has temporary failures in work, running can be completed through manual driving by pulling a chain, and then the stable and safe running work of the running mechanism can be guaranteed. The running mechanism is simple, safe and reliable in structure, convenient to install, easy to disassemble and replace and convenient to maintain.

The invention discloses an automatic paint spraying device for a round metal disk and a paint spraying method thereof. The automatic paint spraying device for the round metal disk comprises a spray gun bracket, a spray gun, a first servo motor, a second servo motor, a control box, a Z-shaped bracket, an X-axis guide track and a Y-axis guide track, wherein the spray gun and the first servo motor are arranged on the spray gun bracket. The automatic paint spraying device is suitable for spraying paint to the surface of metal with larger mass; during paint spraying, the round disk keeps still, a nozzle and a metal sensor perform X-Y axis plane movement above the round disk; and when the metal sensor detects that a metal object exists below the round disk, the nozzle is opened and can spray paint, and otherwise, the nozzle is closed. When the automatic paint spraying device for the round metal disk is used for spraying paint, the surface of the round disk with larger mass can be conveniently, automatically and uniformly painted, the consumption of energy and paint is reduced greatly, and the device is simple in structure, safe and reliable.

The invention relates to a light olefins hydroformylation method, which solves the problems that the stirring equipment investment is high, fault is easily generated, a heat-dissipating cycle reaction solution interferes the stirring effect, and unevenness of concentration gradient and temperature is easily formed by a bubble column reactor. According to the invention, light olefins as well as hydrogen and CO-containing synthetic gas respectively pass through a liquid inlet 2 and an air inlet 5, and then are supplied to a jet reactor; the jet reactor comprises a gas outlet 1, a liquid inlet 2, at least one liquid jet apparatus 3, at least one gas distributor 4, an air inlet 5, a liquid outlet 6 and a baffle plate 7; wherein, the gas outlet 1 and the liquid inlet 2 are arranged at top of the reactor, the air inlet 5 is arranged at the lower part at side of the reactor, the liquid outlet 6 is placed at bottom of the reactor, the gas distributor 4 is positioned between the liquid jet apparatus 3 and the baffle plate 7, so that the technical scheme better solves the problems, and can be used for industrial production of aldehyde by light olefins hydroformylation.

The invention belongs to the technical field of vehicle door lock safety, and particularly relates to an anti-pinch control system and method for a vehicle door and a vehicle. According to the anti-pinch control method for the vehicle door, image information of people in a limited range is captured in real time through an image acquisition device and sent to a control device for image recognition;when the image acquisition device determines that a person exists in the limited range, a radar detection device is started to detect the position information of the person in the limited range and send the position information to the control device to determine whether the person exists in the limited range or not; when the radar detection device determines that the person exists in the limitedrange, an alarm device is controlled to give an alarm; and when the radar detection device determines that no person is in the limited range, the vehicle door is controlled to be closed. Compared withthe prior art, the anti-pinch control system is simple, safe and reliable in structure, a vehicle door closing system is more intelligent, and the image recognition technology and the radar technology are used for replacing human eye judgment to prevent the vehicle door from pinching people.

The invention discloses a finger mechanism of an anthropomorphic myoelectrical artificial hand. The finger mechanism sequentially comprises a base, a near knuckle, a middle knuckle and a far knuckle from bottom to top and further comprises a metacarpal bone joint, a near phalanx joint, a far phalanx joint, a near driving tendon and a far driving tendon, wherein the base is in rotary connection with the near knuckle through the metacarpal bone joint, the near knuckle is in rotary connection with the middle knuckle through the near phalanx joint, and the middle knuckle is in rotary connection with the far knuckle through the far phalanx joint. The near driving tendon is connected between the near phalanx joint and the metacarpal bone joint, the far knuckle is connected between the far phalanx joint and the near phalanx joint, and the near phalanx joint and the far phalanx joint are of spring type flexible hinge structures. The finger mechanism can achieve finger bending and stretching only by needing a driving unit, adopts tendon drive to achieve coupling motions of the joints, enables a finger structure to be simple, safe and reliable by applying spring type flexible hinges, is flexible in motion and has an appropriate operating function.

The invention discloses a speed limiting trigger which comprises a speed limiting trigger base, a triggering coiling block fixed to the speed limiting trigger base and provided with ratchet wheel teeth, a speed measurement wheel, a pair of centrifugal blocks, a centrifugal block base, an adjusting spring and a main shaft. The speed measurement wheel is connected with the centrifugal block base coaxially through the main shaft. One end of each centrifugal block is clamped on one side of the centrifugal block base, the other end of one centrifugal block and the other end of the other centrifugal block are connected through the adjusting spring, and the pair of centrifugal blocks are respectively provided with ratchet wheel teeth as well. The speed limiting trigger is simple in structure, safe, reliable and capable of being installed at the top of a hanging cage of an elevator so that the triggering and braking functions for the speed limitation of the hanging cage can be achieved. The speed limiting trigger is good in performance and can be widely applied to the industries of elevators or construction mechanical equipment.

The invention discloses a system and method for preventing a boom from backward tilting and a crane, belonging to the field of crawler crane control systems. The system comprises an angle sensing device and a control device, wherein the angle sensing device is connected with a boom; the control device is connected with an amplitude variable solenoid valve of a crawler crane; the control device is connected with the angle sensing device; the maximum backward tilt angle value allowed by the boom is preset in the control device; the system also comprises a backward tilting preventing rod with two ends respectively connected with the boom of the crawler crane and a loading platform of the crawler crane; a pull rod is also hinged between the backward tilting preventing rod and the boom and is provided with a retractable structure and a section easy to snap; and the section easy to snap is snapped when the two ends continuously endure tension after the pull rod reaches the maximum length. According to the technical scheme, the following beneficial effects are achieved: prompt and protection effects are achieved through an electrical control system and a mechanical structure, the boom can be effectively prevented from backward tilting and accidents are avoided; and the system is simple in structure, is low in cost, is safe and reliable, is easy to manufacture and install and can be applied without extra space for placement.

The invention provides an outgoing line clamp device and a permanent magnet motor with the same. The outlet wire clamp device includes: the upper piece of the wire clamp, the inner surface of which is provided with at least one pressing protrusion; the lower piece of the wire clamp, the inner surface of which is provided with a groove for passing through the line matching the pressing protrusion; Wherein, the wire-pressing protrusion cooperates with the wire-passing groove to form a wire-passing channel suitable for the lead wire and fix the lead wire. Since the wire-passing channel formed by the wire-pressing protrusion and the wire-passing groove is in the shape of a "bow" and is no longer a straight-line channel, the lead wire can be clamped, the lead wire is not easy to be pulled, and the solder joint inside the lead wire can be avoided. The outgoing line clip device of the present invention is simple in structure, safe and reliable.

The invention provides a disinfection cabinet which comprises at least one group of a shell, a front panel and an exhaust structure, wherein a cavity is formed in the shell; the front panel is provided with a first position in contact with the shell and a second position far from the shell; the exhaust structure is formed between the front panel and the shell and is communicated with cavity and the outside of the disinfection cabinet. The exhaust structure is positioned between the front panel and the cavity, and water vapor in the cavity is exhausted from the front panel, so that secondary pollution caused by bacterium breeding if water vapor stays in the cavity can be avoided, or the condition that the cabinet is affected with damp and mildewed when the water vapor stays inside the disinfection cabinet can be avoided. The disinfection cabinet is simple in structure, safe and reliable.

The invention provides a cooking appliance. The cooking appliance comprises a pot body, a pot lid arranged on the pot body, a pressure-limiting evacuation device, a drive portion and a transmission portion, wherein the pressure-limiting evacuation device is communicated with a cavity of the pot body, and the drive portion is connected with the pot lid. The transmission portion comprises a clamping block and a linkage plate, wherein the clamping block is rotatably arranged on the pot lid, and the linkage plate is rotatably arranged on the pot lid and is positioned below the clamping block. The drive portion is provided with a first drive position clamped between the clamping block and the linkage plate to open the pressure-limiting evacuation device, so that the cooking appliance is in the evacuation state; the drive portion also is provided with a second drive position abutted to one side of the clamping block to close the pressure-limiting evacuation device, so that the cooking appliance is in the sealed state. The drive portion can be clamped between the clamping block and the linkage plate, in other words, the drive portion is locked, and accordingly, evacuation can be achieved without pressing the drive portion with a hand, and possibility of scalding caused by evacuation can be reduced. The cooking appliance is simple in structure, safe and reliable.

The invention relates to a cart bed for turning over before spinal operation. The cart bed comprises a lifting module and a turning over module, wherein the turning over module is mounted on the top of the lifting module and comprises a bed body, fixed brackets, rotating shafts and limiting mechanisms, the rotating shafts penetrate the bed body in the direction of the longitudinal centerline of the bed body, and two ends are connected with the fixed brackets, and the limiting mechanisms are arranged at four corners of the bed body, one end of each limiting mechanism is connected with the bed body, the other end is connected with the corresponding fixed bracket, and a human body fixing mechanism is arranged on the bed body. Compared with the prior art, the cart bed can prevent secondary injury of the spine of a patient when the bed is manually moved and turned over and can reduce manpower, and turning-over operation can be realized by only 1-2 medical workers.

The invention discloses a liftable cab of a monorail crane, comprising a walking bar, a lifter, a cab and a mousing-hook self-locking device. The liftable cab of the monorail crane is located at the head of the monorail crane; the walking bar arranged above the cab is matched with a monorail crane rail suspended on a coal mine tunnel roof; the walking bar, the lifter and the cab are connected in sequence from top to bottom; the cab is ascended or descended through controlling the stretching of the hydraulic control lifter; and the safety of the cab can be effectively improved by adopting the mousing-hook self-locking device arranged on the roof of the cab. According to the invention, the lifter with the lever structure is pushed by adopting hydraulic pressure so as to realize the ascending or descending of the cab; the liftable cab is compact in structure and large in stroke; a person can directly enter into the cab to operate; and the defect that the person needs to climb a ladder to get in or out of the cab of the traditional monorail crane is made up.

The invention discloses a novel alkali liquor buffer tank and relates to the technical field of the caustic soda or solid caustic soda process. According to the novel alkali liquor buffer tank, the heating mode than a heat insulation assembly is arranged on the outer portion of a tank body and a heating assembly is arranged in the tank body is adopted; the heat insulation assembly is of a shell structure corresponding to the contour of the tank body and is arranged outside the tank body in a covering mode, and loss of heat of molten alkali liquor can be effectively reduced from the source; theupper end of the heating assembly is connected to a tank cover, and the lower end of the heating assembly extends to the bottom of an inner cavity of the tank body, that is, the molten alkali liquoris subjected to direct contact heating through the heating assembly arranged in the tank body, heat loss of the heating assembly is effectively reduced, and heat of the heating assembly is made full use of. Accordingly, energy consumption is effectively reduced, and economic benefits are greatly increased. The novel alkali liquor buffer tank has the characteristics of being simple in structure, safe and reliable.

The invention relates to the technical field of medical devices, and particularly discloses a puncture needle clamping device which comprises a base, a popup switch, a needle pushing module and a clamping module. The base comprises a supporting body, an operation face positioned on the supporting body and a mounting face positioned on the supporting body and back to the operation face, a punctureneedle containing groove is formed in the mounting face, the popup switch is arranged on the supporting body and extends out of the operation face, the needle pushing module is arranged on the bottomwall of the puncture needle containing groove and used for popping up a puncture needle, and the clamping module is arranged on the mounting face, positioned on one side of the puncture needle containing groove, connected with the popup switch and used for clamping, mounting or demounting the puncture needle. The puncture needle clamping device is convenient for medical staff to use the puncture needle for puncturing, the medical staff can flexibly control mounting and demounting of the puncture needle by only controlling the popup switch, and the puncture needle clamping device has the advantages of being simple in structure, safe and reliable.

The invention provides a square tube scaffold connector and a square tube scaffold, and relates to the field of scaffolds. The square tube scaffold connector comprises inserting components, a positioning part and an inserting part connected with the positioning part. A positioning hole is formed in the positioning part; the inserting part is arranged on the positioning part and provided with inserting holes; the inserting components are arranged in the inserting holes and connected with connecting tubes. By the adoption of inserting, the square tube scaffold connector can be efficiently and rapidly assembled, and is simple in structure, safe and reliable.

The invention discloses a wall-surface plastered plane real-time monitoring instrument for building construction. The wall-surface plastered plane real-time monitoring instrument comprises an upper cover and a base. The wall-surface plastered plane real-time monitoring instrument is characterized in that the upper cover is provided with a window; the base is provided with a driving gear turntable and a toothed turntable; the driving gear turntable and the toothed turntable are meshed with each other and are further pivotally rotated relative to the base; the driving gear turntable is driven by a miniature motor; the toothed turntable is fixedly provided with a green laser emitting pipe, a red laser emitting pipe and a vertical plate; two side surfaces of the vertical plate are provided with a green lower reflecting mirror and a red lower reflecting mirror respectively; the left side wall of the vertical plate is provided with a screw rod and a nut; the nut is fixedly provided with a green upper reflecting mirror; a green laser emitted from the green laser emitting pipe is reflected through the green lower reflecting mirror and the green upper reflecting mirror in sequence, and then is ejected from the window; the right side wall of the vertical plate is similarly provided with a screw rod and a nut; the nut is fixedly provided with a red upper reflecting mirror; a red laser emitted from the red laser emitting pipe is reflected through the red lower reflecting mirror and the red upper reflecting mirror in sequence, and then is ejected from the window.

The invention discloses a formwork capable of being quickly spliced to enlarge area and used for blocking floods, fixing gravel and isolating forest fire and is used for disaster prevention and relief. The formwork aims to provide basic tools for disaster prevention and relief, and comprises mortise and tenon plates, hinge mortise and tenon plates, right-angle mortise and tenon terminals and mortise and tenon hinges. The formwork is rectangular, the edge of the formwork is in a concave-convex shape, an upper edge is complementary to a lower edge in shape, a left edge is complementary to a right edge in shape, adjacent edges of the same formwork can be connected in an embedded mode, and the formwork is characterized in that anti-disengaging tenon walls are arranged on one side face of the concave-convex shape of the edge of the formwork and are provided with bolt pin holes. Disaster relief appliances such as a large flat plate, a retaining wall, an enclosing wall, a groove and a pipeline can be spliced according to actual requirements to block or dredge flood or isolate and control fire disasters. A stainless steel formwork protection armor is built for overall tailored splicing ofa flood control dam, so that the flood control dam has no natural reason of dam break. A large-area stainless steel formwork slope protection armor is spliced and built in a rock collapse disaster frequently-occurring section so as to restrain rolling stones and quicksand on the surface layer of a rockfall mountain body from blocking traffic, and positive significance is achieved.

The invention relates to a method for reinforcing the mixing effect of a hydraulic reactor, and mainly solves the problems of unsatisfactory gas-liquid and liquid-liquid mixing effect and complex structure in the prior art. The hydraulic reactor is used in a reaction for the low pressure liquid phase synthesis of acetic acid from methanol. The hydraulic reactor comprises a gas outlet 1, a baffle plate 2, a liquid jet device 3, a gas inlet 5, a gas distributor 5, liquid outlets 6 and a liquid inlet, wherein the gas inlet 4 is positioned at the lower side portion of the reactor, the gas outlet 1 is positioned at the top of the reactor, the liquid inlet 7 is positioned at the bottom of the reactor, and the liquid outlets 6 are symmetrically placed at two sides of the lower end closure of the reactor; the gas distributor 5 is positioned between the baffle plate 2 and the liquid jet device 3; the baffle plate 2 is positioned below an end closure; and the baffle plate 2 is provided with gas discharge holes. The above technical scheme well solves the problems, and the method can be used in the industrial production of the low pressure liquid phase synthesis of acetic acid from methanol.

The invention discloses an automatic paint spraying device for a round metal disk and a paint spraying method thereof. The automatic paint spraying device for the round metal disk comprises a spray gun bracket, a spray gun, a first servo motor, a second servo motor, a control box, a Z-shaped bracket, an X-axis guide track and a Y-axis guide track, wherein the spray gun and the first servo motor are arranged on the spray gun bracket. The automatic paint spraying device is suitable for spraying paint to the surface of metal with larger mass; during paint spraying, the round disk keeps still, a nozzle and a metal sensor perform X-Y axis plane movement above the round disk; and when the metal sensor detects that a metal object exists below the round disk, the nozzle is opened and can spray paint, and otherwise, the nozzle is closed. When the automatic paint spraying device for the round metal disk is used for spraying paint, the surface of the round disk with larger mass can be conveniently, automatically and uniformly painted, the consumption of energy and paint is reduced greatly, and the device is simple in structure, safe and reliable.

The invention discloses a book sterilizer which comprises a cleaning part and a conveying part. The conveying part comprises a conveying device, and a clamping seat is arranged on the conveying device; an iron strip is arranged on the conveying device, and a first magnet is arranged at the bottom of the clamping seat, and the clamping seat attracts the iron strip through the first magnet; the clamping seat is in threaded connection with a threaded column, a pressing part is arranged on the threaded column, and a clamping part is arranged between the pressing part and the clamping seat; a pressing nut is arranged above the pressing part, and the clamping part comprises two clamping pieces used for clamping a book and connecting and installing ends located at the two ends; the cleaning partcomprises a cleaning working bin, and an inlet and an outlet are formed in the cleaning working bin; and an ultraviolet sterilization part is arranged on the side wall, above the conveying device, ofthe cleaning working bin, three disc bases are arranged on the top of the cleaning working bin and are linearly arranged, and the disc bases are provided with blocking rods. The book placed in the book sterilizer can be cleaned and sterilized.