317 results about "Cavity wall" patented technology

The invention relates to the technical field of drilling, in particular to a drilling device with an ultra-long drill rod and a drilling method. The super-long drill rod well drilling device comprises a drill bit and a lengthening rod connected to the tail end of the drill bit, a liquid cavity is formed in the lengthening rod, cooling liquid is contained in the liquid cavity, a flow guide cavity is formed in the drill bit, a variable-diameter rod is arranged at the bottom end of the lengthening rod, a variable-diameter cavity is formed in the top of the flow guide cavity, and the variable-diameter rod is arranged in the variable-diameter cavity. Matched thread structures are arranged between the outer wall of the variable-diameter rod and the cavity wall of the variable-diameter cavity, a through hole is formed in the variable-diameter rod, a sinking cavity is formed in the top end of the through hole and communicated with the bottom end of the liquid cavity, the hole diameter of the sinking cavity is smaller than the cavity diameter of the liquid cavity, and the diameter of the sinking cavity is larger than that of the liquid cavity. The bottom end of the through hole is communicated with the flow guide cavity, a heat collection cavity is formed in the bottom end of the flow guide cavity, the heat collection cavity is filled with an expansion medium, and compared with the prior art, the cooling mode has the advantages that cooling liquid is reasonably applied, and waste is reduced.

The present application discloses a three-dimensional bouquet comprising an outer layer and one or more inner layers. The inner layer(s) is located within the outer layer. The distinguishing feature of this invention is as follows:The outer layer forms a three-dimensional cavity that surrounds the bouquet. The cavity wall is equipped with at least two symmetrical creases, and symmetrically positioned through-holes on the left and right sides. The cavity wall is equipped with connecting components, which are strip-like structures. One end of the connecting components passes through the through-holes in the cavity wall and is fixed on the inner side of the wall. The other end is equipped with matching latches or fasteners that can interlock with each other. The left and right connecting components can enclose the outer surface of the cavity wall, using the latches or fasteners to securely lock the three-dimensional bouquet in place.

The present application discloses a three-dimensional bouquet comprising an outer layer (1) and one or more inner layers (2). The inner layer(s) is located within the outer layer. The distinguishing feature of this invention is as follows: The outer layer forms a three-dimensional cavity that surrounds the bouquet. The cavity wall is equipped with at least two symmetrical creases, and symmetrically positioned through-holes (201, 202) on the left and right sides. The cavity wall is equipped with connecting components (101, 102), which are strip-like structures. One end of the connecting components passes through the through-holes in the cavity wall and is fixed on the inner side of the wall. The other end is equipped with matching latches (1011, 1012) or fasteners that can interlock with each other. The left and right connecting components can enclose the outer surface of the cavity wall, using the latches or fasteners to securely lock the three-dimensional bouquet in place. By utilizing the connecting components positioned on both sides of the bouquet, this three-dimensional bouquet can be easily transformed from a flat state to a three-dimensional state. The assembly and disassembly are convenient and reliable, allowing anyone to perform the operation effortlessly. Furthermore, the production and manufacturing costs are low.

The utility model discloses a suspension type maintenance power box, which relates to the technical field of power boxes and comprises a power box assembly, a suspension mounting assembly arranged on one side of the power box assembly, a connecting assembly arranged on one side of the power box assembly, and a clamping assembly arranged on one side of the connecting assembly. A sealing door is hinged to one side of the power box assembly, a first magnet strip is arranged on one side of the sealing door, a second magnet strip is arranged on the cavity wall of the power box assembly, and the first magnet strip is matched with the second magnet strip; the connecting assembly comprises a fixing block fixedly connected to one side of the sealing door, a through groove block is fixedly connected to the bottom of the fixing block, a fixing supporting plate is fixedly connected to one side of the power box assembly, and a long inserting block is arranged on one side of the fixing supporting plate. And the damage to the wall surface caused by wall hanging and dismounting is avoided, the mounting and dismounting operation is simple, the effect of conveniently overhauling the power box assembly is achieved, and the practicability of the device is improved.

The invention discloses an adjustable collision acoustics black hole period vibration reduction and impact resistance device which comprises a plurality of same vibration reduction and impact resistance units periodically arranged on the surface of a structure subjected to vibration reduction. The vibration reduction and impact resistance unit comprises an n-shaped cavity wall and a mass block-acoustic black hole beam combined structure arranged in the n-shaped cavity wall. The adjustable collision acoustics black hole period vibration reduction and impact resistance device has periodicity in the n-shaped direction perpendicular to the n-shaped cavity wall. The n-shaped cavity wall comprises an upper cavity and a top vent hole formed in the top end of the upper cavity; the mass block-acoustic black hole beam combined structure comprises an acoustic black hole beam, a mass block and a containing cavity perpendicular to the structure to be damped. Damping layers are arranged at the tail ends of the acoustic black hole beams, and the mass block moves up and down in the containing cavity and collides with the acoustic black hole beams arranged below to transmit vibration energy which is absorbed and dissipated by the damping layers. By periodically arranging the vibration reduction and impact resistance units on the surface of the structure subjected to vibration reduction, the broadband vibration reduction effect is achieved.

The invention relates to a shaped SPCS cavity wall assembly type combined system and a construction method thereof. The shaped SPCS cavity wall assembly type combined system comprises an SPCS cavity wall, assembly type ring ribs, a height-adjustable base, a laminated plate, a supporting angle adjusting piece and an adjustable supporting rod. An SPCS cavity wall and a ground anchor are arranged on the laminated slab; fabricated ring ribs are arranged in the SPCS cavity wall, and supporting angle adjusting pieces are arranged on the upper side face and the lower side face of the SPCS cavity wall correspondingly. The group of adjustable supporting rods are respectively connected with the ground anchor piece and the supporting angle adjusting piece; the SPCS cavity wall and the laminated slab are connected through a height-adjustable base, and the side face is sealed through a sealing plate. And a group of lifting lugs are arranged at the upper end of the SPCS cavity wall. According to the method, BIM modeling is adopted to extract data, intelligent machine tool machining is adopted, an SPCS cavity wall assembly type combined system is formed, the construction procedures are greatly reduced, size control is accurate, the reinforcing mode is reliable, and the forming effect is good; the method not only has a good construction error-tolerant rate, but also guarantees the safety of construction workers, and improves the efficiency of building construction.

The invention relates to a self-hidden folding lifting lug device in the technical field of flying object hanging and hoisting, which comprises a U-shaped lifting lug, a base with the bottom mounted in a cavity and a cavity wall plate corresponding to the outside of the top of the base, and a U-shaped notch is formed in the plate surface of the cavity wall plate; the U-shaped lifting lug comprises a top transverse section and two vertical supporting sections, the two vertical supporting sections are located in two longitudinal strip holes of the U-shaped notch respectively, the bottom ends of the vertical supporting sections are rotationally connected with the top of the base through rotating shafts, so that the U-shaped notch can be blocked after the U-shaped lifting lug rotates and lies down from an external hanging state, and the outer lug surface of the U-shaped lifting lug is aligned and consistent with the outer plate surface of the cavity wall plate; the rotating shaft is sleeved with a torsional spring, and two force arm sections of the torsional spring are connected with the U-shaped lifting lug and the base correspondingly, so that the U-shaped lifting lug has the lying tendency; the inner lug surface and the outer lug surface of the U-shaped lifting lug are inclined surfaces capable of mutually forming an included angle, and the rotating center of the rotating shaft deviates from an angle bisection surface of the included angle; the lifting lug device is more simplified, lighter and standardized, and meanwhile, the pneumatic shape is optimized.

The utility model discloses a mine sand making machine crushing vortex motion cavity which comprises a shell, a bottom plate is arranged at the bottom of the shell, a middle hole is formed in the middle of the surface of the bottom plate, and an annular plate detachably connected with the inner cavity of the shell is arranged at the position, above the bottom plate, of the inner cavity of the shell. A plurality of lining plates which are distributed in a circumferential array and are detachably connected are arranged between the bottom of the annular plate and the upper surface of the bottom plate, and a plurality of rib plates which are distributed in a circumferential array are arranged on the upper surface of the annular plate. According to the crushing vortex motion cavity, due to the arrangement of the rib plates, abrasion of stone to the cavity wall can be reduced, the service life of the crushing vortex motion cavity is prolonged, and due to the fact that the rib plates are fixedly connected with the annular plate through the screws, the damaged rib plates can be replaced conveniently, and maintenance cost is greatly saved.

The grinding device for mold production comprises a position adjusting base, a detection assembly and a grinding support, the detection assembly comprises upper detection frames, upper pin shafts, detection rods and pulleys, the two upper detection frames are movably arranged on one side of the position adjusting base, the upper pin shafts are rotatably installed in the upper detection frames, the detection rods are slidably inserted in the upper pin shafts, and the grinding supports are arranged on the upper detection frames. The grinding support is movably arranged on the position adjusting base, and an overhead grinding wheel at the position of a grinding point of the grinding support is in linkage connection with the detection assembly. The two sets of linked detection rods are arranged on the position adjusting base, so that in the process of grinding a mold cavity, according to the shape change of the cavity wall, the mold cavity can be ground according to the shape change of the cavity wall; and the force application direction of one side of the polishing point is adjusted in a self-adaptive mode, so that the force bearing point of the polishing belt perpendicularly acts on the cavity surface all the time, the polishing efficiency of all point positions of the mold is consistent, and the polishing effect is guaranteed.

The utility model relates to a flushing nozzle which comprises a nozzle assembly and an anti-blocking assembly, the nozzle assembly comprises a nozzle body, and the anti-blocking assembly comprises an annular frame fixed to the cavity wall of an inner cavity of the nozzle body, a transverse plate fixed to the annular frame, fan blades rotationally connected to the transverse plate and a curved rod which is connected with the fan blades and rotates synchronously with the fan blades. The curved rod is attached to the cavity wall of the inner cavity, and the rotating shaft direction of the fan blades is parallel to the axial direction of the spray head body. According to the flushing spray head, the annular frame fixed to the cavity wall of the inner cavity of the spray head body and the transverse plate fixed to the annular frame are used for fixing the position of the whole anti-blocking assembly, water flow pushes the fan blades to rotate, the fan blades drive the curved rod to rotate, and the curved rod makes contact with the cavity face of the inner cavity of the spray head body so that dirt on the surface can be cleaned; and self-rotation is achieved through the pressure during water spraying, the interior of the spray head is automatically cleaned, the situation that the spray head is blocked due to deposition of gravel dirt is avoided, and then the quartz sand beneficiation efficiency is improved.

The present application relates to the technical field of building construction, in particular to a prefabricated cast-in-place cavity wall and a construction method. A prefabricated cast-in-place cavity wall comprises: a wall body; a plurality of panel connecting structures, wherein the plurality of panel connecting structures are arranged at least at corners of the wall body, and each panel connecting structure has an accommodating space suitable for inserting a corner of a functional panel therein; the functional panel, wherein a corner of the functional panel is inserted into the accommodating space of each panel connecting structure so as to be fixed. The present application provides a prefabricated cast-in-place cavity wall and a construction method, which facilitates the installation of functional panels, has a high construction efficiency, and reduces the risk of water leakage.

The utility model discloses a blast hole plugging dust fall structure based on blasting pressure atomization, which relates to the technical field of mine blasting related equipment and comprises a bottom cavity seat, a stabilizing component is slidably connected to the upper end of the bottom cavity seat, a dust fall mounting cavity is arranged at the upper end of the stabilizing component, and blasting hole cavities are uniformly distributed on one side of the dust fall mounting cavity. Each stabilizing assembly comprises a cavity supporting base slidably connected to one side of the bottom cavity base, long grooves are formed in the top faces of the cavity supporting bases, rotating rods are rotatably connected to one sides of the cavity supporting bases, long supporting blocks are slidably connected to inner cavities of the two long grooves, stabilizing plates are arranged at the tops of the long supporting blocks, and rubber pads are arranged on one sides of the inner walls of the stabilizing plates. According to the arrangement, the dust fall mounting cavities with different widths can be conveniently and stably mounted through the stabilizing assemblies, so that the dust fall mounting cavities are prevented from shaking constantly in the process of moving the dust fall mounting cavities, the situation that explosive, blister mud and other components are prone to impacting the cavity wall of the device and even damage the blister mud is prevented, and the safety performance of the device is improved.

The utility model discloses a liquid bubble eliminating device which comprises a defoaming cavity and is characterized in that the defoaming cavity comprises a water overflow cavity, a water inlet cavity and a water outlet cavity, the water inlet cavity is communicated with the water overflow cavity through a water overflow opening, the water inlet cavity is communicated with the water outlet cavity through a water outlet, a water overflow hole is formed in the cavity wall of the water overflow cavity, and the water overflow opening is communicated with the water overflow cavity. A water inlet hole is formed in the cavity wall of the water inlet cavity, a water outlet hole is formed in the cavity wall of the water outlet cavity, the amount of water entering the water inlet cavity through the water inlet hole is larger than the amount of water flowing out of the water outlet hole, the excessive amount of water can be discharged through the water overflow hole, and the bottom edge of the water outlet is lower than the bottom edge of the water overflow hole. According to the liquid bubble eliminating device, liquid paths are switched according to different heights of the overflow port and the water outlet, water flow with bubbles flows to the overflow port, water flow without bubbles flows to the water outlet, and the purpose of effectively eliminating bubbles in liquid is achieved.

The invention relates to the technical field of fabricated buildings, and provides a fabricated building steel structure connecting component which comprises a first mounting part, the first mounting part is arranged on a bearing column, the first mounting part is provided with a containing cavity and a sliding groove, the sliding groove communicates with the containing cavity, one end of the bearing column is located in the containing cavity, and a mounting cavity is formed by the bearing column and the inner wall of the containing cavity; the second mounting piece is provided with a limiting part and a sliding part, the sliding part is arranged in the sliding groove in a sliding mode, the limiting part is movably arranged in the mounting cavity, the limiting part abuts against or cancels abutting against the cavity wall of the mounting cavity after moving, the connecting piece is arranged on the first mounting piece and used for connecting the steel beam and the second mounting piece, and the fastening bolt sequentially penetrates through the steel beam and the connecting piece. And the first anti-loosening piece is arranged on the second mounting piece in a sliding mode, and the first anti-loosening piece clamps the fastening bolt after sliding and is used for preventing the fastening bolt from rotating. By means of the technical scheme, the problems that in the prior art, an assembly type building steel structure is poor in connecting effect and high in maintenance cost are solved.

The invention discloses a building component and a building structure, and relates to the technical field of buildings. Wherein a cavity is limited in the framework, and a plurality of communicating holes capable of communicating with the cavity are formed in the cavity wall of the framework; and the concrete body covers the periphery of the framework and is filled in the cavity. The excellent compression resistance of the concrete body can be used for bearing the load of a pressure area, meanwhile, restraining force can be generated on the framework, local yielding of the framework is prevented, the fireproof and anti-corrosion effects can be achieved, the framework can bear tensile force to make up for the tensile weakness of the concrete body, shear force can be borne, ductility is improved, and the service life of the concrete body is prolonged. And the bearing capacity and the stability of the building component are improved. Besides, the mechanical occlusal force between the framework and the concrete body can be increased through the communicating holes, interface slippage and cracking are effectively avoided, and the cooperative work capacity and durability of building components under long-term loads are guaranteed.

The present invention discloses a vibration table for making dry-mixed mortar, which belongs to the technical field of vibration equipment. The vibration table for making dry-mixed mortar includes a frame, a vibration table surface, a vibration mechanism, a test mold, a crossbeam, a lifting mechanism, a fixed rod, a fan-shaped plate, and an unfolding mechanism. The unfolding mechanism is used to drive a plurality of fan-shaped plates on the fixed rod to unfold when the crossbeam moves downward to a fixed position. The lifting mechanism in the present invention drives the crossbeam to move downward, so that the fixed rod drives the fan-shaped plate to move downward. When it moves downward to a fixed position, the fan-shaped plate enters the test mold, and then the unfolding mechanism drives the plurality of fan-shaped plates on the fixed rod to unfold to a horizontal state. After the fan-shaped unfolding, a disc-shaped structure is formed and contacts with the inner cavity wall of the test mold, and the inside of the test mold is sealed to a certain extent, so that the fan-shaped plate has a blocking effect on the dry-mixed mortar in the upper layer of the test mold, and avoids the dry-mixed mortar in the upper layer of the test mold from splashing out during the vibration process.

The invention relates to a method for measuring the height of a water-rich roof mining overlying strata fissure zone, and belongs to the field of overlying strata fissure zone height measurement. Based on a traditional upward hole water injection side leakage method, the measuring process and monitoring equipment are improved. The method mainly comprises the steps that the height range of a fissure zone is judged according to the width of a coal pillar, the thickness of a coal seam and experience, the drilling angle and depth are designed, and a hole is drilled in a mining roadway beside a goaf; the valve pipe is placed into the drill hole and fixed to the anchor cable through a hemp rope and an iron chain, cement paste is injected into a crack between the valve and the wall of the drill hole, and it is ensured that the paste is completely filled and waits for solidification. Continuously punching to the designed depth, conveying the capsule and the metal net to the fissure zone through a drill rod, injecting water into the capsule to enable the metal net to expand and be fixed on the hole wall, and mounting from top to bottom to avoid hole collapse. The improved equipment is used for performing section-by-section water injection test, and water injection flow change is observed and recorded. According to the method, the safety and accuracy of measurement in the water-rich environment are improved, and the method has relatively high practicability and innovativeness.

A bucket (1) for a working machine (2) is disclosed. The bucket (1) may have: a front cavity wall (14) forming an inlet (18) defining a vertical inlet plane (26); a rear cavity wall (16) opposite to the front cavity wall (14) forming an outlet (20) defining an outlet plane (28); a top cavity wall (22) extending between the front cavity wall (14) and the rear cavity wall (16) defining a horizontal top plane (23); a bottom cavity wall (24) opposite to the top cavity wall (22) defining a bottom plane (25); and two side cavity walls (29, 30). The two side cavity walls (29, 30) may also extend between the front cavity wall (14) and the rear cavity wall (16). The outlet plane (28) may be at an angle relative to the inlet plane (26), the bottom plane (25) may be at an angle relative to the top plane (23), and the outlet plane (28) is perpendicular to the bottom plane (25).

The application discloses a heat exchanger, which comprises a plurality of heat exchange pipes, a first component, a second component and a first sealing element, wherein the heat exchange pipes are connected with the second component; the heat exchanger has a first collecting cavity which is located between the first component and the second component; the first component comprises a first protruding part and a first collecting cavity wall, the first protruding part protrudes from the outer wall of the first component and faces away from the first collecting cavity, and the first protruding part is connected with the second component; the first component further comprises at least one second protruding part, at least part of the second protruding part protrudes from the first protruding part and faces away from the first collecting cavity along the protruding direction of the first protruding part, and at least part of the second protruding part is in abutment with the second component; the second component has at least one positioning groove, and the second protruding part is located in the positioning groove, so that the position between the first component and the second component is positioned, the compression amount of the first sealing element is controlled within a preset range, and the sealing effect of the first sealing element is improved.

The application discloses a noise reduction ventilation cooling device and a tunnel system, and belongs to the field of tunnel ventilation and cooling devices.The tunnel system comprises the noise reduction ventilation cooling device, and the noise reduction ventilation cooling device comprises a ventilation noise reduction assembly and a cooling assembly.During ventilation, air passes through the sound-absorbing through holes of the sound-absorbing members, so that the noise generated in the ventilation process of the tunnel system is absorbed.During cooling, the sound-absorbing members on the cavity walls of the ventilation cavity can absorb the noise generated in the cooling process of the heat exchange medium of the heat exchange circuit, so that a low noise level is maintained.Further, the noise reduction ventilation cooling device integrates noise reduction, ventilation and cooling, and is equivalent to a combined device for noise reduction, ventilation and cooling.The sound-absorbing members are used to reduce noise in the ventilation process and the cooling process, so that the tunnel space occupied by the noise reduction ventilation cooling device is reduced, and the problem that the noise reduction device and the heat dissipation ventilation facility occupy a large tunnel space in the prior art is solved.

The invention relates to the technical field of brick making, and specifically to a brick making device for automatically separating iron products and impurities from building waste brick making, comprising a separation box and a brick making box, a mounting barrel being fixedly connected to the left side of the separation box, a crushing and iron removal mechanism being installed on the inner cavity wall of the separation box, and a feeding frame being installed on the right side wall of the separation box. The brick making device for automatically separating iron products and impurities from building waste brick making solves the problem that the existing brick making device for automatically separating iron products and impurities is inconvenient to automatically turn over the building concrete when separating iron products, and the building waste at the bottom cannot easily contact the magnetic plate, resulting in incomplete iron removal, and part of the bricks in the building waste will be bonded to the steel bars, and if they are not crushed and separated, the iron removal will also be insufficient, and the building waste usually contains plastic waste or sound insulation cotton, etc., which is inconvenient to separate them at the same time and requires subsequent secondary separation before brick making, thereby increasing the cost of brick making.

The utility model discloses an automatic shielding structure for preventing gas from volatilizing downwards in a vacuum cavity, the vacuum cavity comprises a cavity wall, the cavity wall is provided with a notch for the gas to pass through, a gas channel is arranged below the notch, the automatic shielding structure comprises a rotatable shaft positioned below the cavity wall and an outer surface along the axis direction of the shaft, the shaft is fixedly connected with a connecting plate, the connecting plate is fixedly connected with a shielding plate, the shielding plate is matched with the notch, and the cross section area of the shielding plate is larger than that of the notch. According to the automatic shielding structure, the shaft drives the connecting plate and the shielding plate to rotate so as to control the initial position of the shielding plate, and therefore the purpose that uniformity is not affected when gas passes through the notch is achieved. Due to the design of the rectangular shielding plate made of stainless steel, in the rotating process, volatile gas can be blocked, meanwhile, flow guide gas can smoothly pass through a gap between the shielding plate and the cavity wall, the stability of gas circulation is effectively maintained, and the uniformity of gas circulation is improved.

The invention provides an underground automatic ball throwing tool, a well drilling coring device and an underground automatic ball throwing method.The underground automatic ball throwing tool comprises a shell provided with an inner cavity and an underground control unit fixedly arranged on the cavity wall of the inner cavity, and the underground control unit is provided with a detection component, a control component and a driving component; the detection component is used for receiving a push-down signal or a recovery signal sent from the ground, and the control component is connected to the detection component and used for controlling the driving component to drive the ball releasing unit to execute ball releasing when the detection component detects the push-down signal or controlling the driving component to drive the ball releasing unit to recover when the detection component detects the recovery signal; the ball releasing unit is provided with a ball containing channel and a push-pull rod connected with the driving component. Based on the electric control technology, the ball throwing operation is carried out by receiving the push-down signal sent from the ground, and the automatic ball throwing device can be suitable for automatic and efficient ball throwing in the environments such as inclined shafts and horizontal wells.

The invention relates to the technical field of slurry scraping devices, and discloses a slurry scraping device for a pouring type semi-flexible pavement, the slurry scraping device comprises a slurry scraping plate connected with a moving frame, the slurry scraping plate comprises a plate body, a moving part and an inserting part, the plate body is provided with a cavity penetrating through the top surface of the plate body, the plate body is made of a material with elastic deformation capacity, and the plate body is fixedly connected with the moving frame; the moving part is connected to the moving frame and located above the plate body, the inserting parts are connected with the moving part, the number of the inserting parts is the same as that of the cavities, the inserting parts are driven by the moving part to move up and down and are movably inserted into the cavities, and the moving part drives the inserting parts to move to different positions of the cavities. The size of a gap formed between the cavity wall of the cavity and the end of the inserting part is changed, the moving part can drive the inserting part to be completely inserted into the cavity to fill the cavity, the rigidity of the slurry scraping plate is changed by changing the size of the gap between the cavity wall of the cavity and the end of the inserting part, and the size of the gap is linearly changed. Therefore, the rigidity of the slurry scraping plate can be linearly changed.

The present application relates to a kind of porous metal materials.The cavity wall of the hole surrounded by is connected open hole, and the cavity wall is axial hollow structure, and the cavity wall has hole in radial direction, and the porosity of the porous metal material is uniformly distributed or gradient distribution, and the gradient distribution can be gradient change along one direction, or it can be three-dimensional gradient change, and the cavity wall radial hole is single-stage hole.The porous metal material of the present application has good mechanical properties, high three-dimensional pore connectivity, and good transfer performance.

The hot air type decontamination range hood comprises a shell, a volute, a wind wheel and a hot air cleaning device, the hot air cleaning device comprises a flow guide piece, a fan and a heating piece, the flow guide piece is provided with a flow guide channel for containing the fan and the heating piece, the flow guide channel is provided with a plurality of air outlets communicated with the flow guide channel, and one air outlet directly faces an air inlet. And the other air outlets directly face the cavity wall of the accommodating cavity and / or the outer wall of the volute. According to the utility model, the flow guide piece with the flow guide channel and the plurality of air outlets is arranged, the heating piece and the fan are arranged in the flow guide channel, and one air outlet is over against the air inlet, and the other air outlets are over against the cavity wall of the accommodating cavity and / or the outer wall of the volute, so that hot air blown out of the flow guide channel can be blown out through different air outlets; oil stains attached to the wind wheel, the volute and the cavity wall of the containing cavity are gasified or liquefied and discharged out of the shell, cleaning of the wind wheel, the volute and the shell is achieved, and the oil stains are prevented from being attached to the wind wheel, the volute and the shell to affect rotating smoke discharging of the wind wheel.

The application discloses an isolation device and a construction method of a filling well. The isolation device comprises an inflation assembly and an isolation piece. The inflation assembly comprises an inflation piece and structural reinforcement pieces. The inflation piece is provided with an inflation cavity, an inflation port and a deflation port. The deflation port is arranged at intervals from the inflation port. Both the inflation port and the deflation port are communicated with the inflation cavity. A plurality of structural reinforcement pieces are arranged at intervals along the axial direction of the inflation piece. Each structural reinforcement piece is connected with the cavity wall of the inflation cavity and is arranged along the circumferential direction of the inflation piece. The isolation piece is wrapped outside the inflation assembly. The side of the isolation piece away from the inflation assembly is used for contacting with a filling body. The isolation device can optimize the construction process of the filling well.

The utility model provides a communicating device and a coal washing production line with the same. The communicating device is used for communicating two adjacent coal washing devices and comprises a communicating structure and a buffering structure. The communicating structure is provided with a feeding port, a discharging port and a communicating cavity, the feeding port communicates with the discharging port through the communicating cavity, and at least part of the communicating structure is obliquely arranged so that materials entering the communicating cavity through the feeding port can move towards the discharging port under the action of gravity; wherein the communicating cavity is provided with a buffering section, and a containing concave part used for containing materials is arranged on the bottom wall of the buffering section; and the buffering structure is arranged on the cavity wall of the communicating cavity, and the buffering structure is used for buffering the materials by limiting and stopping the materials in the moving process. According to the chute, the problems that the service life of the chute in the prior art is short and the coal washing quality of coal is reduced are solved.

The embodiment of the invention provides a dust cup, a dust collector and a dust collection system, and belongs to the technical field of cleaning. A first dust collecting cavity and a dust discharging opening which are communicated with each other are formed in the cup body, and the cavity wall, where the dust discharging opening is located, in the cavity wall of the first dust collecting cavity is a target cavity wall. The guide part is connected with the cup body, the guide part extends along the target cavity wall, the extension direction of the guide part is a first direction, and the dust discharge port is located at one end of the guide part in the first direction. And the guide piece can guide one of the dust cover and the cup body to move along the first direction relative to the other one of the dust cover and the cup body so as to open or close the dust discharge port. According to the dust cup, the dust collector and the dust collection system, even under the condition of long-time dust dissipation, the dust cover can still smoothly move in the first direction, so that the dust cover can smoothly open or close the dust discharge port.

The invention discloses a measuring instrument storage cabinet which comprises a cabinet body and a clamping assembly, the cabinet body is provided with a plurality of storage cavities, the clamping assembly is arranged in the storage cavities, the clamping assembly comprises a first clamping piece and a second clamping piece, and the first clamping piece and the second clamping piece are both in sliding connection with the cavity walls of the storage cavities. Therefore, the clamping assembly is switched between a clamping state of clamping the measuring instrument and a loosening state of loosening the measuring instrument. According to the measuring instrument storage cabinet disclosed by the embodiment of the invention, when the clamping assembly is in the clamping state, the first clamping piece and the second clamping piece can clamp the measuring instrument, so that the storage stability of the measuring instrument is ensured; when the clamping assembly is in the loosened state, the first clamping piece and the second clamping piece do not apply extrusion force to the measuring instrument, the measuring instrument can be taken out more easily, and therefore the measuring instrument can be taken and placed more conveniently.