95 results about "Shielding block" patented technology

A system and a method for a pulsed neutron logging tool. The pulsed neutron logging tool may include a pulsed neutron generator for generating one or more neutrons, one or more gamma ray scintillator detectors disposed in a detection area, a shielding block that separates the pulsed neutron generator from the one or more gamma ray scintillator detectors, and a shielding layer. The pulsed neutron logging tool may further comprise an information handling system communicatively connected at least in part to the pulsed neutron logging tool. The information handling system is configured to create a gamma ray spectrum from the one or more gamma rays detected by the one or more gamma ray scintillator detectors, remove a background from the gamma ray spectrum to form a peaks-only spectrum, and compare one or more peaks-only elemental standards to the peaks-only spectrum to determine an elemental weight and yield.

A display panel. The display panel comprises a plurality of first covering portions, a plurality of supporting portions, and a plurality of light-shielding portions. The supporting portions are disposed on the sides of the first covering portions away from a driving backplane; a supporting gap is formed between two adjacent supporting portions on a same first covering portion; a light-shielding portion is disposed in the supporting gap; and light-transmitting openings are formed between the sides of the light-shielding portions close to each other. Before light-shielding blocks are cured to form the light-shielding portions, due to the supporting function of the supporting portions, the problem that the light-shielding blocks are stripped from the first covering portions during flushing is avoided. The shapes and sizes of the light-shielding portions are basically the same. Therefore, the uniformity of the shapes and sizes of the light-transmitting openings is good, and the reflectivity of light in the light-transmitting openings is the same, thereby alleviating alternately bright and dark vertical line defects on the display panel. The present invention further provides a display device comprising the display panel.

The utility model discloses a water cooling pool for a hot galvanizing process, and relates to the technical field of water cooling pools, the water cooling pool comprises a box body, a first motor is fixedly arranged at the lower end of the box body in the vertical direction, an output shaft of the first motor penetrates through the box body and is coaxially and fixedly provided with a rotating shaft, the rotating shaft is provided with a plurality of rotating rods in the circumferential direction, and connecting pieces are arranged between the rotating rods and the rotating shaft; a plurality of shielding blocks are hinged to the interior of the box body in the circumferential direction and arranged in the vertical direction, rotating pieces are arranged between the shielding blocks and the box body and used for adjusting the angles of the shielding blocks, a circulating assembly is arranged on one side of the box body and used for replacing water in the box body, and a collecting device is arranged in the box body and used for collecting residues. The collecting device is located below the rotating rod, and a supporting piece is arranged in the box body and used for supporting the workpieces. The cooling device has the effect of improving the workpiece cooling efficiency.

The utility model relates to the technical field of automobile brake pumps, in particular to an efficient heat dissipation automobile brake pump which comprises a brake pump body, a plurality of first cooling fins are arranged on the surface of the brake pump body in the front-back direction, and the surface of the brake pump body is connected with a ventilation hood through a plurality of second installation blocks. A semiconductor chilling plate is arranged on the inner wall of the rear portion of the ventilation hood, a second fan is rotationally connected to the inner wall of the ventilation hood through two second fan supports, a shielding block is arranged at the front end of the first mounting block, and a cold air control device is arranged outside the shielding block. After the semiconductor chilling plate is powered on, refrigeration can be conducted on the cold end face of the semiconductor chilling plate, when the brake pump body works, the second fan is started, and cold air can be blown out through the second fan. By means of the heat dissipation mode, corrosion of a shell of the brake pump body cannot be caused, and the service life of the brake pump cannot be affected.

The invention provides a high-energy ray detection device. The high-energy ray detection device comprises a high-energy ray source, a stack structure, a shielding block, a reflecting mirror, a detector and a light shield, the stack structure, the shielding block and the reflector are arranged in the light shield, and the high-energy ray source and the detector are arranged outside the light shield; the high-energy ray source emits rays to the first side surface based on the first light through hole; the stack structure comprises n stacks of different response matrixes, the stacks are arranged in the grooves of the second side face from top to bottom, and rays are received through the through hole units of the first side face and converted into visible light; visible light is emitted from the second side surface, is received by the reflector and is reflected to the detector based on the second light through hole, and is converted into an electric signal by the detector. The invention also provides a high-energy ray energy disperse spectroscopy, which comprises a computer and a high-energy ray detection device, and the computer is electrically connected with a detector of the high-energy ray detection device and performs spectrum unfolding. The device has the advantages of being high in spectrum unfolding stability, high in measurement precision, low in spectrum unfolding uncertainty and compact in structure.

The invention discloses a switch source device, a radiotherapy head and radiotherapy equipment, relates to the technical field of medical equipment, and is used for solving the technical problem that the switch source device of the radiotherapy equipment in the related technology cannot realize source switching in different application scenes. The switch source device is applied to the radiation treatment head, and the radiation treatment head comprises a shielding body, a collimation assembly arranged on the inner side of the shielding body, and a source carrying body arranged between the shielding body and the collimation assembly. The source carrier is used for arranging a radioactive source; the switch source device comprises a first switch source assembly, the first switch source assembly comprises a shielding block and an electromagnetic driving assembly, and the shielding block is used for shielding rays emitted by a radioactive source or enabling the rays emitted by the radioactive source to pass through a collimation assembly; and the electromagnetic driving assembly is connected with the shielding block and is used for driving the shielding block to move along the longitude direction of the shielding body or the collimation assembly and switching between a source closing position and a source opening position so as to realize source switching.

The utility model discloses a coating material curing device, and belongs to the technical field of coating material curing. The device mainly comprises a curing box body, a curing cavity and four sets of supporting columns are arranged in the curing box body, the supporting columns are installed in the curing box body, sliding grooves are formed in the two sides of each supporting column, and sliding seats are installed on the sliding grooves in a sliding mode; the threaded rod is arranged on the sliding seat in a threaded mode, and a threaded hole is formed in the supporting column; the sliding rail is installed between the two sets of sliding seats, sliding blocks are installed on the sliding rail in a sliding mode, a partition plate is fixedly connected between the two sets of sliding blocks, and notches are formed in the two sides of the partition plate; and the two groups of supporting units are mounted in the partition plate. According to the coating material curing device, through arrangement of the supporting columns, the sliding grooves, the sliding seats, the threaded rods, the sliding rails, the shielding blocks, the sliding blocks, the cushion rods, the notches and the supporting units, the distance between the partition plates is changed, and the partition plates can properly contain workpieces.

This utility model relates to the technical field of pigment mixing equipment, specifically a premixing anti-splashing device for neutral pen pigment raw materials. It includes a disperser, which comprises a lifting device. The lifting device has a drive structure at its top, and a transmission shaft is connected to the front of the drive structure. The drive structure drives the transmission shaft to rotate. A dispersing disc is located at the bottom of the transmission shaft, and a baffle assembly is located in the middle of the transmission shaft. This utility model, by setting dispersing blades on the outside of the dispersing teeth, can drive the material outside the dispersing teeth to move downwards, preventing the material from perpendicularly contacting the inner wall of the mixing tank and reducing splashing. By setting the baffle assembly, the baffle shield blocks the upward splashing material, and the centrifugal force of the rotation causes the material to fly out from the edge of the baffle shield, preventing material adhesion. The baffle shield is conical, allowing the material to move obliquely downwards, preventing secondary splashing. The height of the baffle shield is adjustable to accommodate the mixing of materials of different volumes.

The invention discloses a fermentation device for duck feed production, and particularly relates to the technical field of duck feed fermentation granulation, the fermentation device comprises a fermentation barrel, a bracket is mounted on the outer side of the fermentation barrel, a stirring part is mounted on the fermentation barrel, a mouth-shaped block is fixedly connected to the outer side of the fermentation barrel, a scattering mechanism is mounted on the outer side of the mouth-shaped block, and the scattering mechanism comprises a shielding block; the shielding block is arranged on the outer side of the mouth-shaped block, a rotating part and a first material scattering part are installed on the shielding block, the first material scattering part comprises a first round pipe, the end, away from the first motor, of the first round pipe is movably connected with a second round pipe, the outer side of the second round pipe is fixedly connected with a second gear, and a grinding part is installed at the end, away from the first round pipe, of the second round pipe. Through the arrangement of the rotating part and part of the first material scattering part, the material scattering amount is controlled, so that the situation that a dry powder binder and part of dry feed are in direct contact with wet feed, so that the dry powder binder and the part of dry feed are quickly caked, and non-uniform stirring is caused is prevented by adopting a method of scattering the feed in a small amount for multiple times.

This utility model provides a blackboard writing device based on a pluggable buffer acquisition screen structure, including a bracket, a fixing groove, an adjustable hanging fixing frame structure, a pluggable buffer acquisition screen structure, a hanging sliding fixing plate structure, and a protective film. The bracket, fixing groove, connecting frame, L-shaped hanging rod, hanging hole, and threaded ring are designed to work together to facilitate the hanging of the L-shaped hanging rod by inserting expansion bolts through the hanging hole, making blackboard installation easier. The bracket, fixing groove, protective film, touch screen, L-shaped fixing frame, sliding hole, fixing bolt, and shielding block are designed to protect the touch screen during data writing and acquisition by placing the protective film on the right side of the touch screen.

The utility model relates to the technical field of heat preservation blankets, in particular to a novel intelligent heat preservation blanket which comprises an electric heating element, an installation assembly and a functional assembly, the installation assembly comprises heat conduction wires, the two heat conduction wires are fixed on the outer surface of the electric heating element, and a blanket surface is fixedly arranged on the outer surface of the electric heating element. A plurality of positioning blocks are fixedly arranged on the outer surface of the blanket surface, an outer cover is arranged on the outer surface of the blanket surface, and a shielding block is rotatably arranged on one side of the outer cover. The blanket surface is arranged on the outer surface of the electric heating element, the outer cover is arranged on the outer surface of the blanket surface, and a first hook-and-loop fastener is matched with a second hook-and-loop fastener; a shielding block is fixed above a rectangular hole, the intelligent heat preservation blanket can be detached and cleaned conveniently, the heat preservation performance and the waterproof performance of the blanket surface are improved through cooperation of a first heat preservation layer, a second heat preservation layer, a first waterproof coating and a second waterproof coating, and the functionality of the outer cover is improved through an anti-static layer, a sterile layer and a protective layer.

The invention discloses a vehicle lamp light shield capable of being quickly positioned, and belongs to the field of vehicle lamp light shields. The vehicle lamp light shield capable of being rapidly positioned comprises a light shielding block, a second mounting frame is arranged at one end of the light shielding block, a first mounting frame is arranged at the lower end of the outer portion of the second mounting frame, and second anti-sliding blocks are transversely and evenly distributed at the lower end of the second mounting frame. The problems that an existing middle sliding groove mechanism has the final locking function at the same time, so that when locking torque is applied, locking force can directly act on an adjusting rail, and uncontrollable micro-deviation of the calibrated position of a light shield assembly is extremely likely to happen are solved. The second mounting frame and the first mounting frame can be primarily fixed through mutual limitation of the first anti-skid block and the second anti-skid block, and during primary fixing and insertion of the bolt into the connecting column, the first anti-skid block and the second anti-skid block are mutually limited, so that micro deviation caused by rotation of the bolt is avoided, and misalignment of the shading cut-off line is avoided.

The utility model provides a prefabricated hollow brick, which relates to the technical field of wall bricks and comprises a hollow brick body, a wiring groove is arranged on the surface of the hollow brick body, lap joint grooves are arranged on two sides of the wiring groove on the surface of the hollow brick body, lap joint blocks are embedded in the lap joint grooves in a clamping mode, and the lap joint blocks are connected with the hollow brick body in a clamped mode. In the process that the hollow brick body is used for building a wall, the lap joint blocks and the shielding blocks on part of the hollow brick body are stripped from the wiring grooves and the lap joint grooves, after the whole wall is built, a longitudinal wiring groove which is in butt joint with the same straight line is reserved in the surface of the whole wall, and the wiring groove can be used for embedding electric wires later. The surface of a built wall does not need to be grooved in the later period, and accidental damage to the hollow brick body is effectively avoided.

An alarm device for a magnetic resonance imaging (MRI) system includes a main body (10), a first response unit (21), and a shield (30). The first response unit and the shield are disposed on the main body. The first response unit is capable of transmitting a first radio frequency signal upon receiving electromagnetic waves of a set frequency. The shield is capable of switching between a first relative position and a second relative position relative to the first response unit. When the shield is in the first relative position, the shield blocks the first response unit to prevent it from receiving electromagnetic waves of the set frequency. When the shield is in the second relative position, the shield avoids the first response unit to allow it to receive electromagnetic waves of the set frequency. This alarm device has high reliability. Furthermore, an alarm system for an MRI system including this alarm device is also provided.

The application relates to the field of high-speed communication and information network technology, in particular to a space expandable photoelectric information processing device, which comprises a device body, the device body comprises a power board module, an information processing board module, an interface board module, an expansion information processing module and a processing board heat dissipation top cover, a shielding block is arranged in the interface frame, and the device body comprises the processing board heat dissipation top cover. The application can not only improve the complex processing technology, overcome the deficiencies of the existing technology in the aspects of efficiency, cost, precision, material utilization rate, environmental protection and the like, improve the modularization and expandability of the system, improve the photoelectric data processing capacity, realize high integration and small and light design, help improve the heat dissipation performance and environmental adaptability of the device, and help unify the information processing of multiple types of photoelectric loads.

The utility model relates to the technical field of lithium batteries, in particular to a low-temperature protection structure for a lithium battery, which comprises a lithium battery body, a mounting base is mounted at the lower end of the lithium battery body, a support plate is mounted on the inner side wall of the lithium battery body, and adaptive grooves are formed in the left and right inner walls of the support plate. A first circulating groove and a second circulating groove are sequentially formed in the surface of the supporting plate from left to right; and a first telescopic rod is installed on the surface of the right side of the fixing block, and a first shielding block is installed at the end, away from the fixing block, of the first telescopic rod. The first circulating groove and the second circulating groove can be opened, then air can be blown to the lower end of the lithium battery body, and the supporting plate is not in contact with the bottom end of the lithium battery body, so that the air can be integrally in contact with the lower end of the lithium battery body, the integral contact effect is relatively good, and the integral cooling effect is relatively good.

The utility model relates to a shield block grabbing tool and a duct piece assembling machine, and the shield block grabbing tool is installed on the duct piece assembling machine and used for grabbing shield blocks; the shield block grabbing tool comprises a supporting frame, and the supporting frame is used for installing the shield block grabbing tool on the duct piece assembling machine. The guiding pieces are oppositely arranged at the two ends of the supporting frame in the first direction; the telescopic grabbing pieces are arranged on the opposite sides of the guiding pieces correspondingly, and the grabbing pieces are arranged in a staggered mode in the second direction, so that the extending ends of the grabbing pieces can grab and release the shield body blocks through guiding of the opposite guiding pieces; the first direction and the second direction are orthogonal. The shield block grabbing tool can be installed on a duct piece assembling machine through the supporting frame, the guiding piece guides the output end of the grabbing piece, and therefore the grabbing piece grabs and releases shield blocks.

A system and a method for a pulsed neutron logging tool. The pulsed neutron logging tool may include a pulsed neutron generator for generating one or more neutrons, one or more gamma ray scintillator detectors disposed in a detection area, a shielding block that separates the pulsed neutron generator from the one or more gamma ray scintillator detectors, and a shielding layer. The pulsed neutron logging tool may further comprise an information handling system communicatively connected at least in part to the pulsed neutron logging tool. The information handling system is configured to create a gamma ray spectrum from the one or more gamma rays detected by the one or more gamma ray scintillator detectors, remove a background from the gamma ray spectrum to form a peaks-only spectrum, and compare one or more peaks-only elemental standards to the peaks-only spectrum to determine an elemental weight and yield.

The utility model relates to the technical field of pigment production, in particular to an intelligent proportioning feeding device for rubber and plastic pigment production, which comprises a box body, a control panel, support legs, a discharge pipe, a valve and a control device, the control panel is arranged on the surface of the box body, the support legs are fixedly connected with the lower surface of the box body, the discharge pipe is fixedly connected with the surface of the box body, and the valve is arranged on the control device. The valve is arranged on the surface of the discharging pipe, the control device is arranged on the upper surface of the box body and comprises a lower feeding pipe, the lower feeding pipe is fixedly connected with the inner wall of the box body, the upper surface of the lower feeding pipe is fixedly connected with a connecting ring, the inner wall of the connecting ring is fixedly connected with a first shielding block, and a rotating groove is formed in the surface of the connecting ring; and the inner wall of the rotating groove is rotationally connected with a rotating ring. According to the pigment adding device, the control device is arranged, so that the flow speed of the feeding pipe is convenient to control, pigments with different proportions can be added at the same time, the proportion can be flexibly adjusted, the feeding pipes with different models do not need to be replaced, and the convenience of the device is effectively improved.

The utility model relates to a multifunctional socket which comprises a socket body and a panel detachably connected to the socket body, the panel is provided with first jacks for insertion of plugs, the socket body is provided with a plurality of metal sheets, the metal sheets are used for being in contact with and communicated with the plugs inserted into the first jacks, and the multifunctional socket further comprises a protection assembly. The protection assembly comprises a safety door, a first driving part and a shielding block, the safety door is detachably connected to the socket body and located between the metal sheet and the first jack, the safety door is provided with a second jack for insertion of a plug, the shielding block is slidably connected to the safety door, and the first driving part drives the shielding block to slide on the safety door. The part, where the live wire and the zero wire are inserted, of the second jack is an electric shock part, and the shielding block is used for shielding the electric shock part. When the plug is not inserted into the socket for use, as the shielding block is positioned between the panel and the socket body, a user is difficult to move the shielding block away by inserting a hand or other slender objects into the first jack, so that the potential safety hazard of electric shock can be reduced.

The application discloses a shield hoisting foundation construction method, which can reliably construct a hoisting foundation perpendicular to the axis of a starting shaft, and realizes hoisting and lowering of each shield block into the shaft by means of a gantry crane stably running on the hoisting foundation, thereby solving the technical problem that each shield block cannot be hoisted and lowered into the shaft by a crawler crane in a restricted environment such as an airport. The hoisting foundation is arranged perpendicularly to the axis of the shield starting shaft, so that the gantry crane can be safely, stably and reliably arranged perpendicularly to the shield starting shaft and above the starting shaft with a relatively loose height limit, thereby solving the height limit problem in the restricted construction environment such as an airport, and further enabling shield block hoisting and lowering into the shaft by the gantry crane meeting the height limit requirement.

The invention provides a water separation pipeline water transfer facility comprising a water separation device. The water separation pipeline water transfer facility is sequentially stacked with a bottom plate partition block on the ground of a sewer and the upper portion of the bottom plate partition block. According to various embodiments related to the vehicle collecting pipeline water transfer facility, the vehicle collecting pipeline water transfer facility uses partition blocks on the wall surfaces on the two sides of a sewer to partition gaps generated on the ground of the sewer and the wall surfaces on the two sides, and according to the embodiments, the vehicle collecting facility comprising the vehicle collecting pipeline comprises: 1, 2, a water facility supporting piece; the third supporting piece is located between one side of the first supporting piece and one side of the third supporting piece and between the other side of the second supporting piece and the other side of the third supporting piece, and the first foundation partition block and the second foundation partition block are opposite to the sewer ground in shape and are used for isolating gaps generated on the sewer ground. And the first shielding block and the second shielding block are sequentially stacked at the upper parts of the first basic partition block and the second basic partition block and are opposite to the two side wall surfaces of the inner side of the sewer pipeline in order to isolate gaps generated on the two side wall surfaces of the sewer pipeline.

The utility model relates to the field of steam nozzles, and discloses a steam nozzle metal insert for food machinery, which comprises a connecting pipe, a threaded ring is mounted on the inner wall of the connecting pipe in a threaded manner, threaded grooves are formed in the inner wall and the outer wall of the threaded ring, an insert body is in threaded connection with the inner walls of the threaded grooves, and a sealing ring is clamped on the surface of the insert body. The size specification of the surface of the sealing ring is in interference fit with the size specification of the inner wall of the threaded ring, a mounting ring is fixedly mounted on the inner wall of the threaded ring, and a shielding block is movably connected to the inner wall of the mounting ring. The threaded ring is installed on the inner wall of the connecting pipe, the inner wall of the threaded ring is connected with the surface of the insert body through the threaded groove, the inner wall of the threaded ring is connected with the surface of the mounting ring, and the inner wall of the mounting ring is movably connected with a shielding block, so that the inner wall of the mounting ring is shielded by means of the shielding block; therefore, the situation that liquid entering from the insert body pollutes the connecting pipe, and later cleaning is inconvenient is avoided.

The invention discloses a composite busbar plastic dipping device and a plastic dipping method. The composite busbar plastic dipping device comprises a suspension conveying line, a preheating mechanism, a fluidization dipping mechanism, a plasticizing mechanism and an air cooling channel, the lifting appliance structure is used for installing the busbar, after the busbar is installed, the first shielding block and the second shielding block automatically shield the positions, needing to be exposed, of the busbar, so that shielding liquid or a shielding sleeve does not need to be adopted for shielding the positions, after plastic dipping is completed, the busbar can be directly taken down, and the overall efficiency is greatly improved; according to the fluidization dipping mechanism, compressed air is input through a plurality of air chambers, so that the input quantity of different positions can be independently adjusted, and a sensor on the top or the side wall of a fluidized bed is matched, so that uniform fluidization of the whole powder is ensured; according to the plastic dipping device, the pulse back-blowing structure is additionally arranged, the pulse back-blowing structure adopts a regular pulse back-blowing mode to scatter agglomerated powder, and an inclined blowing head is additionally arranged at the position of the side wall prone to contamination, so that the powder agglomeration phenomenon is avoided, and the plastic dipping effect is guaranteed.

The utility model relates to the technical field of milk powder temporary storage tanks, and discloses a milk powder temporary storage tank with a weighing function, which comprises a fixed base, a support block fixedly mounted on the upper side of the fixed base, a mounting ring fixedly mounted on the upper side of the support block, and a first connecting pipe fixedly mounted in the mounting ring, a discharging pipe is fixedly installed at the lower end of the first connecting pipe, a guiding pipe is fixedly installed at the upper end of the first connecting pipe, and a storage tank is fixedly installed at the upper end of the guiding pipe. According to the milk powder storage device, the circular barrel with the upward opening is formed by the side face of the rotating barrel and the side face of the shielding block to preliminarily store milk powder, when the milk powder is gradually accumulated, the rotating barrel moving downwards makes contact with the contact sensor, and then the rotating barrel rotates; and the milk powder moves out of the interior of the rotating barrel through the permeation cavity, so that the milk powder with a certain weight is obtained, the milk powder with a proper weight is conveniently discharged, and the weighing precision in the milk powder processing process is improved.

The embodiment of the invention provides a detector, which comprises a shell assembly, a detection assembly and a shielding block placement structure, and is characterized in that the detection assembly comprises a probe, a detection circuit board and a flat shell, and the detection circuit board is at least partially located in a shielding area of the flat shell; the shell assembly is used for driving the detection assembly to move towards the sampling part so as to pierce the probe into the sampling part; the shielding block placing structure is positioned on the outer side of the shielding area of the flat shell and is used for placing a shielding block; under the condition that the shielding block is placed on the shielding block placing structure, the shielding block is used for preventing irradiation rays from irradiating to the detection circuit board. When the detector is sterilized through irradiation, the shielding block is placed on the shielding block placement structure, so that the shielding block shields the shielding area of the flat shell, and the shielding block blocks the path of irradiation rays irradiating to the detection circuit board to weaken or eliminate the irradiation rays, thereby preventing the detection circuit board from being affected by irradiation and causing faults.

This invention relates to a manufacturing method for a complex curved surface structure of a medium-to-large-sized double-layer stainless steel thick plate, comprising the following steps: forming an outer shell, an inner shell, stiffening plates, support columns, and a conical sleeve respectively; machining the inner shell, the four sides of the outer shell, welding bevels, and mounting holes for the support columns; machining the welding bevels of the stiffening plates, wherein the stiffening plates include outer stiffening plates near the outer side and T-shaped stiffening plates located inside; welding the T-shaped stiffening plates to the inner side of the inner shell; performing low-temperature annealing treatment on the welded inner shell and T-shaped stiffening plates; welding the conical sleeve to the inner shell, and then welding a shielding block to the conical sleeve; precision machining the bevels on the T-shaped stiffening plates where they are welded to the outer shell; riveting the outer shell and support columns, and spot welding for fixation; welding the outer shell and support columns, first using laser welding for the root pass, and then using TIG welding for the fill pass; vibration aging; grinding and polishing the inner and outer surfaces. This method improves welding efficiency, reduces welding deformation, and ensures overall surface accuracy.

The utility model relates to the technical field of switches, in particular to an anti-mistaken-touch button switch, which comprises a control box, a switch, a rotating rod, a shielding block and an elastic assembly, the switch is arranged on the control box, the rotating rod comprises a connecting part and a guide part, one surface of the connecting part, which is deviated from the control box, is provided with a limiting groove, and the shielding block is arranged in the limiting groove. The shielding block comprises a movable part, a protection part and a limiting part, the movable part is rotationally connected with the guide part and slides in the length direction of the guide part, the protection part is connected with the movable part and correspondingly covers the switch, and the limiting part is arranged on the face, close to the limiting groove, of the movable part and is correspondingly connected with the limiting groove in a clamped mode. The elastic assembly is installed on the guide part and used for providing elastic force for the limiting part to be clamped into the limiting groove. According to the mistaken touch prevention button switch, mistaken triggering caused by the fact that the switch is directly touched by the outside world is effectively avoided, the shielding block is stably locked in a non-operation state, and the aim of greatly improving the mistaken touch prevention effect of the button switch is achieved.

The utility model relates to the field of mechanical sealing, and discloses an efficient circulating cooling mechanical sealing device which comprises a connecting base and a shaft sleeve, the bottom end of the outer wall of the shaft sleeve is elastically connected with a movable ring through a reset spring, two sets of threaded grooves are formed in the side wall of the shaft sleeve, and positioning screws penetrate through the inner walls of the threaded grooves of the shaft sleeve and are in threaded connection with the threaded grooves. The outer wall of the bottom end of the movable ring makes contact with a static ring, a sealing ring is arranged on the surface of the static ring, an adjusting mechanism is arranged on the surface of the movable ring and comprises a fixing column, and the surface of the sliding block is fixedly connected with a shielding block. According to the utility model, the rotating block is rotated to drive the threaded rod to rotate, so that the sliding block performs threaded movement on the surface of the threaded rod, and the movement of the sliding block not only can push the shaft sleeve to descend and adjust the compression degree of the reset spring, but also can drive the shielding cover to rotate to shield the vertical groove of the fixed column and prevent dust from entering to influence the adjustment.