225 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 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 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 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.

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 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 utility model provides a protection door structure and a socket, and relates to the technical field of electrical equipment. The protection door structure comprises a shell, a first protection door, a second protection door and an elastic piece, and the protection door structure has a first direction. A mounting cavity is formed in the shell and provided with a cavity bottom, a first cavity wall and a second cavity wall, the first cavity wall and the second cavity wall are opposite in the first direction, a first inserting hole and a second inserting hole are formed in the cavity bottom, the first inserting hole is close to the first cavity wall, and the second inserting hole is close to the second cavity wall. The first protection door slides in the mounting cavity in the first direction. The second protection door slides in the mounting cavity in the first direction, the part, close to the first cavity wall, of the second protection door is nested with the first protection door, and the first protection door and the second protection door can relatively slide in the first direction. The elastic piece is arranged between the second protection door and the first protection door and can stretch out and draw back in the first direction. In this way, the overall size of the protection door structure can be reduced, and then the manufacturing cost of the protection door structure can be reduced.

The invention relates to the technical field of waterproof construction, in particular to a zero-carbon building roof deformation joint heat preservation structure which comprises a cover plate, a mounting rod is vertically and fixedly mounted on the lower surface of the cover plate, a plurality of air cavities are formed in the mounting rod, and a corrugated pipe is fixedly mounted on the surface of the mounting rod; the mounting rod is slidably sleeved with a plurality of sets of heat preservation components, each heat preservation component comprises two flexible heat preservation bodies slidably arranged on the mounting rod in a sleeving mode, and a mounting plate is fixedly mounted at one end of the corrugated pipe; the cavity wall of the air cavity is provided with an air vent, piston plates are vertically arranged in the air cavity in a sliding and sealing mode, the upper surface of the cover plate is provided with a penetrating opening corresponding to the sliding opening in position, a sliding rod is fixedly installed between the multiple piston plates, the sliding rod is inserted in the sliding opening in a sliding and sealing mode, and the top end of the sliding rod penetrates out of the penetrating opening. And the length of the flexible thermal insulation body can be quickly adjusted according to the size of the deformation joint to be subjected to thermal insulation treatment until the deformation joint is subjected to thermal insulation, so that the practicability is improved.

The utility model discloses a karst pile foundation anti-seismic test device which comprises a vibration table, a stacked frame, a sliding mechanism, an anti-seepage flexible rubber membrane and a detection mechanism, the vibration table is vertically provided with four elastic columns, and the four elastic columns are arranged at the four corners of a rectangle respectively; four corners of the frame single bodies are respectively connected with the four elastic columns, the lowest frame single body is fixedly connected with the vibration table, and the test filling cavity is used for filling a soil body; any two adjacent layers of frame single bodies are connected through a sliding mechanism so that the two layers of frame single bodies can relatively slide in the horizontal direction. The transparent anti-seepage flexible rubber film is laid in the test filling cavity and is attached to the cavity wall of the test filling cavity; and the detection mechanism is arranged in the soil body to detect parameters of the soil body so as to represent the test condition of the anti-seismic test. The karst pile foundation anti-seismic test device can solve the problems that an existing karst pile foundation anti-seismic test device is large in boundary fluctuation reflection and not ideal in test effect under the non-uniform seismic excitation condition.

The utility model relates to the technical field of hydraulic fracturing under a mine, and discloses a deep hole fracturing separator which comprises a first separation pipe, a second separation pipe and a third separation pipe, and a containing cavity is formed in the inner side wall of one end of the first separation pipe; the clamping piece and the sliding ball are embedded in the containing cavity, and the sliding ball is movably connected into the containing cavity and is arranged opposite to the clamping piece; one end of the second separation pipe extends into one end of the first separation pipe and is opposite to the clamping piece and the sliding ball, the clamping piece can move between a first position and a second position, the first separation pipe and the second separation pipe are in interference fit with the clamping piece at the first position, and the first separation pipe and the second separation pipe are in interference fit with the clamping piece at the second position. The sliding ball selectively extrudes the clamping piece to move towards the cavity wall of the containing cavity, so that the clamping teeth are separated from the second separation pipe. In the normal working state, the clamping piece is in interference fit with the first separation pipe and the second separation pipe, and when a fault occurs in the deep hole, separation of the first separation pipe and the second separation pipe can be rapidly achieved.

The present application relates to the technical field of range hood, and discloses a switchable air inlet assembly and a range hood with the same, the switchable air inlet assembly comprises a panel, a wind collecting box, a damper plate assembly and a cleaning device, the damper plate assembly comprises a guide rail, a damper plate and a driving device, the damper plate is provided with a shielding surface and a wind guide opening, the damper plate has a first position for shielding the air inlet, a second position for the wind guide opening corresponding to the air inlet and a third position for the shielding surface facing the cleaning device on the guide rail, and the driving device drives the damper plate to move on the guide rail; compared with the prior art, the switchable air inlet assembly can close the air inlet by the damper plate when the range hood is turned off, so that the external dust can be reduced to enter the wind collecting box and the dirt can be reduced to generate on the inner cavity wall surface of the wind collecting box; when the damper plate moves to the third position, the cleaning device can clean the shielding surface, so that the appearance of the panel is clean and tidy when the damper plate moves to the first position and closes the air inlet from the user side.

The utility model relates to a dynamic strain gauge, and belongs to the field of detection equipment, the dynamic strain gauge comprises a housing, and the bottom ends of the left and right side walls of the housing are provided with concave cavities; the cavity wall, facing the top end of the machine shell, of the concave cavity is parallel to the surface of the bottom end of the machine shell, the bottom end of the concave cavity is communicated with the end face of the bottom end of the machine shell, and an included angle formed between the cavity wall, facing the front end of the machine shell, of the concave cavity and the cavity wall, facing the upper portion, of the concave cavity is an obtuse angle. Supporting legs are arranged in the concave cavities, one ends of the supporting legs are hinged to the interiors of the concave cavities, and the other ends of the supporting legs are free ends; when the supporting legs abut against the cavity wall, facing the front end of the machine shell, of the concave cavity, the supporting legs support the machine shell and enable the end face of the front end of the machine shell to face the inclined upper portion. The dynamic strain gauge has the advantages that a worker can conveniently operate the dynamic strain gauge, and the worker does not need to bend down for a long time when operating the dynamic strain gauge.

The utility model belongs to the technical field of natural gas conveying, and particularly relates to a pressure regulating metering equipment maintaining and cleaning device which comprises a cleaning barrel, a control handle is arranged at the end of the upper surface of the cleaning barrel, the end, away from the control handle, of the cleaning barrel is of an open structure, and a driving motor is installed on the surface of the end, close to the control handle, of the cleaning barrel. The power output end of the driving motor penetrates through the cavity wall of the cleaning barrel, and the power output end of the driving motor is in transmission connection with a driving shaft rod through a coupler; according to the novel cleaning scraping disc, dirt adhering to the inner wall of the pressure regulating and metering equipment can be cleaned away, the cleaned dirt is guided through the mud guide groove in the surface of the cleaning scraping disc, the dirt can flow into the cleaning barrel through the guide cover, the dust collector is connected with the cleaning barrel through the dust collection pipe, suction force is generated through the dust collector, and the dirt in the cleaning barrel can be extracted out; and the dirt is discharged into the dirt storage tank to be stored, so that the cleaning efficiency of the pressure regulating and metering equipment is improved, and dirt residues are reduced.

The application relates to the field of concrete raw material quantitative batching, and discloses a sandstone quantitative batching device which comprises a batching tank, a connecting shaft is coaxially arranged in the batching tank, the connecting shaft is connected with a motor arranged on the outer surface of the batching tank, the outer circumferential surface of the connecting shaft is provided with a batching component, the batching component is arranged in an array along the circumferential direction of the connecting shaft, the batching component comprises a connecting frame connected with the connecting shaft, a measuring cylinder is arranged on the connecting frame, a material hole is arranged on the upper end surface of the batching tank, the measuring cylinder can be coaxial with the material hole during the rotation of the batching component along with the connecting shaft, the upper hole of the material hole is extended with a hopper, the opening ends of the measuring cylinders of all the batching components are connected through a ring plate, the ring plate is provided with avoiding holes for avoiding the measuring cylinders, and the upper end surface of the ring plate is attached to the upper cavity wall of the batching tank.

The present application relates to the technical field of air conditioners, and discloses a unidirectional flow splitting device including a housing, a guiding component, a blocking element and a positioning element. The housing includes a first refrigerant port provided on a first end face, a second refrigerant port and a third refrigerant port provided on a second end face, wherein the housing has a hollow inner cavity. The first end of the guiding component is fixed to the first end face. The blocking element is slidably connected to the guiding component, and there is a gap between the blocking element and the inner cavity wall surface of the housing. The positioning element is provided at the second end of the guiding component for stopping the blocking element. Wherein, when the blocking element is in the first position, the first refrigerant port is blocked, so that the refrigerant flows in from the second refrigerant port and flows out from the third refrigerant port. When the blocking element is in the second position, the first refrigerant port is conducted, so that the refrigerant flows in from the first refrigerant port and flows out from the second refrigerant port and the third refrigerant port. The present application also discloses a variable flow splitting heat exchanger.

The utility model discloses an electronic tracking positioner protective sleeve which comprises an upper cover and a lower cover, the rear end of the upper cover is connected with the rear end of the lower cover through a rotating structure, the front end of the upper cover is connected with the front end of the lower cover through a locking structure, and a first cavity is formed in the inner side face of the upper cover. The inner side face of the lower cover is provided with a second cavity corresponding to the first cavity, a positioner containing cavity is formed between the first cavity and the second cavity, a waterproof structure is arranged between the cavity wall of the first cavity and the cavity wall of the second cavity, and the outer side face of the upper cover or the outer side face of the lower cover is provided with an installation fixing structure. The upper cover and the lower cover are connected through the rotating structure, the upper cover and the lower cover do not need to be disassembled when the positioner is installed, and use is more convenient; after the positioner is installed, the whole positioner can be fixedly installed on an article needing to be tracked and positioned in a pasting or magnetic attraction mode and is not easy to find, and when the article is lost, the article can be quickly found through the positioning function of the positioner.

The utility model relates to the technical field of lid, especially a general plastic bucket lid capable of preventing water absorption, which comprises an outer lid and an inner lid, the bottom surface of the outer lid is provided with a sealing cavity, the top surface of the sealing cavity is the inner bottom surface of the outer lid, the cavity wall of the sealing cavity is the inner side surface of the outer end, the lower part of the cavity wall of the sealing cavity is provided with an inner thread matched with the outer thread of the plastic cylinder, the inner bottom surface of the outer lid is provided with a top surface detection assembly, the upper part of the cavity wall of the sealing cavity is provided with a side surface detection assembly, and the top surface detection assembly and the side surface detection assembly are used for detecting whether water leaks or not; the inner lid is used for being connected with the plastic cylinder, the inner lid is arranged in the sealing cavity of the outer lid, the inner lid is flexibly attached to the bucket opening, and the deformation gap of the plastic bucket opening is compensated; the outer lid is provided with a screw pressing and tightening mechanism, axial sealing is formed, the water vapor invasion path is blocked, the top surface / side surface desiccant is arranged in a partitioned manner, residual water vapor is adsorbed, the humidity in the bucket is reduced, and the water vapor penetration condition can be judged through the discoloration of the top surface / side surface desiccant.

An oil storage device, a floating bottom type micro-positive pressure oil storage system, and a construction method. The oil storage device comprises an oil storage cavity (24); a cavity wall (4) is provided on the outer side of the oil storage cavity (24); an oil conveying channel (2) passes through the upper portion of the cavity wall (4); a communicating channel (3) passes through the lower portion of the cavity wall (4); the oil conveying channel (2) and the communicating channel (3) are both communicated with the oil storage cavity (24).