368results about How to "Avoid Leakage" patented technology

The invention discloses an integrated beverage sterile production line system, and belongs to the technical field of food processing and transportation. The integrated beverage sterile production line system comprises a conveying device and a filling bottle, the conveying device comprises a base, a support, a bin body and a conveying belt, the filling bottle is slidably connected to the interior of a conveying air duct, the bin body is fixedly connected to the top end of the base, and a rotating shaft is rotatably connected to the inner bottom wall of the bin body; and one end of the rotating shaft is fixedly connected with a rotating disc. By arranging the anti-leakage assembly, a piston plate on the side wall of a reciprocating threaded sleeve moves up and down in a reciprocating mode, external air is continuously guided into an air storage pipe, a second one-way exhaust valve located on one side of a blocking air bag in a bottle opening is opened along with filling, and the lower half portion of the blocking air bag begins to expand along with continuous entering of the air; and along with continuous expansion of the blocking air bag, the bottle opening is blocked, the situation of material leakage in the filling process is avoided, and the using effect is improved.

The invention relates to the technical field of high-precision hydraulic valves, in particular to a high-precision hydraulic valve convenient to mount, which comprises a mounting part and a hydraulic valve main body, a mounting device is arranged at the top of the mounting part, and a valve pipe is arranged in the hydraulic valve main body. According to the high-precision hydraulic valve convenient to install, by arranging an adjusting detection device, a sliding table is started to drive a connecting frame to move in the direction close to a spring piece and stretch into the middle end position of the spring piece, then a hydraulic telescopic rod can be started to drive a connecting rectangular plate to move downwards, and an oil body detection sensor is controlled to ascend and descend to continue detection; the hydraulic valve can move to the lower portion to achieve the blocking effect, use is convenient, temperature and pressure detection is conducted on oil flowing inside, and a high-precision sensor is integrated in the hydraulic valve and used for monitoring the pressure, flow, temperature and other parameters of oil in real time. And the data is transmitted to a preset parameter range of the control equipment to automatically adjust the working state of the hydraulic valve, so that the stability and the precision of system operation are ensured.

The invention relates to the technical field of heat exchange, in particular to a heat exchanger based on bamboo joint type enhanced heat exchange and a heat exchange method.The heat exchanger comprises a heat exchanger body, and a water inlet pipe and a water outlet pipe are arranged on the heat exchanger body; the filtering structure is in sealed sliding connection with the water inlet pipe, and two groups of filtering positions are arranged on the filtering structure; the energy storage assembly is connected with the filtering structure, the energy storage assembly is matched with a top plate arranged on the heat exchanger body, and one set of filtering positions can be coaxial with the water inlet pipe; and the power assembly is arranged on the top plate, and the power assembly is matched with a third convex shaft arranged on the energy storage assembly and can drive the energy storage assembly to act, so that switching of the two filtering positions is achieved, and the circulation speed and the heat exchange efficiency of heat exchange fluid are improved.

The utility model relates to the technical field of atomizer replacement, and discloses an atomizer with an atomizing head convenient to replace, according to the scheme, the atomizer comprises an atomizer body and the atomizing head, four clamping grooves are formed in the outer side of the atomizer body, four sliding holes are formed in the outer side of the atomizing head, and clamping blocks are slidably connected to the inner walls of the four sliding holes; according to the atomizer, the clamping grooves and the clamping blocks are arranged, when the positions of the four magnets coincide with the positions of the four clamping blocks, the clamping blocks can be separated from the interiors of the clamping grooves through magnetic attraction of the magnets, and therefore the atomizer body can be conveniently inserted into the atomizing head; after the inserting work is completed, the operation ring is screwed at will, at the moment, the magnet and the clamping block are staggered, and the clamping block falls into the clamping groove after losing magnetic attraction, so that the firmness of connection between the atomizer body and the atomizing head can be ensured on the premise that installation is convenient and fast, and liquid medicine waste caused by falling off is avoided.

The invention relates to the technical field of new energy structures, in particular to a self-adaptive deformation sealing structure of a chamber lining and a gas storage chamber. A self-adaptive deformation sealing structure of a chamber lining comprises at least two segmental linings, the segmental linings are arranged at intervals along the lining design position of a chamber, and a construction joint is formed between every two adjacent segmental linings; the two ends of the connecting piece are fixed to the inner walls of the two adjacent segmental linings correspondingly, the connecting piece is provided with a cavity, an opening of the cavity faces the structural joint, and the two adjacent segmental linings are away from each other so that the cavity can be squeezed, and the volume of the cavity can be reduced; and the filling piece is used for filling the structural joint and the cavity. According to the tunnel lining structure, the defects that in the prior art, most chamber linings are divided into blocks, flexible sealing materials are arranged between every two adjacent segment linings, but the flexible sealing materials are prone to being extruded out or torn, and leakage between every two adjacent segment linings is prone to being caused are overcome. The tunnel lining structure overcomes the defects that in the prior art, chamber linings are mostly divided into blocks, and the flexible sealing materials are arranged between every two adjacent segment linings.

The utility model discloses a power battery heat management unit assembly which comprises a shell, a circulating water pump, a heat exchanger, a compressor, a condenser core body and a liquid storage drying filter are installed in the shell, an expansion water tank is further fixed outside the shell, and a circulating water inlet pipeline and a circulating water outlet pipeline are fixed in the shell. A water inlet connecting port of the circulating water inlet pipeline and a water outlet connecting port of the circulating water outlet pipeline are fixed on the shell and are exposed; an outlet of the circulating water pump is communicated with one end of a water flowing channel of the heat exchanger, and the other end of the water flowing channel is communicated with the circulating water outlet pipeline; the circulating water inlet pipeline is provided with a water supplementing opening, and the water outlet of the expansion water tank is communicated with the water supplementing opening through a pipeline. The unit assembly can simplify the work of assembly connection, and is simpler and more convenient to install.

The invention discloses a sealing structure and a water permeability test device, and belongs to the technical field of cable testing, the sealing structure comprises a fixed ring, a movable ring, an elastic sleeve and a flexible strip, the movable ring is rotatably connected with the fixed ring, and the movable ring and the fixed ring are coaxially arranged; the elastic sleeve is arranged in the fixed ring and the movable ring in a penetrating mode and used for being arranged outside a cable in a sleeving mode. The multiple flexible strips are arranged in the circumferential direction of the fixed ring, and the fixed ring and the movable ring are both connected with the flexible strips. Wherein the flexible strip can be tensioned by rotating the movable ring, the periphery of the flexible strip extrudes the outer peripheral side wall of the elastic sleeve, and the inner peripheral side wall of the elastic sleeve and the periphery of the cable can be sealed when the outer peripheral side wall of the elastic sleeve is extruded by the flexible strip, namely, the inner peripheral side wall of the elastic sleeve is attached to the periphery of the cable. According to the sealing structure provided by the invention, disassembly and assembly between the sealing structure and the cable are convenient, and sealing is stable and reliable.

The utility model discloses an explosion-proof oil-immersed current transformer, which belongs to the technical field of oil-immersed current transformers and comprises an insulating porcelain bushing, a flange A is mounted at the bottom end of the insulating porcelain bushing, an expander is mounted at the top end of the insulating porcelain bushing, an oil tank is mounted at the bottom of the flange A, a flange B is mounted at the top of the oil tank, and the flange B is mounted at the bottom of the oil tank. And two sides of the outer wall of the flange B and two sides of the outer wall of the flange A are respectively provided with an annular sealing element. The structure is reasonable, through the arrangement of the annular sealing elements and the protective coating mechanism, the flange B on the oil tank is assembled on the flange A below an insulating porcelain bushing on the oil-immersed current transformer, and the oil-immersed current transformer is assembled on the oil tank through the annular sealing elements; and the annular sealing element is matched with the sealing ring A and the sealing ring B to seal the flange A and the flange B, so that leakage at the mounting position of the oil tank and the insulating porcelain bushing after mounting is avoided as much as possible, the sealing aspect is guaranteed, and the possibility that the oil-immersed current transformer is easy to explode is effectively reduced.

The invention belongs to the technical field of waste battery recycling, and discloses an anti-creeping waste battery recycling device which comprises a vibration mechanism, the vibration mechanism comprises a motor, a rotating wheel is rotationally connected to the motor, and an eccentric wheel is fixedly connected to the side, away from the motor, of the rotating wheel; through cooperation of an eccentric wheel, a screening frame and other structures, disassembly of a main body shell is facilitated, a motor is started to vibrate a placement frame on the screening frame through transmission, the internal structure of a battery is loosened through the frequency and amplitude of vibration, and meanwhile, in the process that the placement frame drives a storage battery main body to move upwards, the storage battery main body is separated from the storage battery main body. The disassembling groove in the storage battery main body collides with the disassembling hammer, disassembling of a shell and an internal structure of the storage battery main body can be accelerated, useful components can be separated from the storage battery main body more easily through vibration and impact, follow-up screening and processing time is shortened, and follow-up regeneration of the useful components of the waste storage battery main body is facilitated.

The invention discloses an automatic photovoltaic panel cleaning device, which belongs to the field of photovoltaic panel cleaning technology, and comprises a base device, a closing device is arranged on the base device, the closing device is used to close and clean the photovoltaic panel, and a collecting device is arranged on the closing device, and the collecting device is used to collect rainwater. The collecting device arranged in the invention can filter rainwater in multiple layers when it rains, collect the filtered rainwater, and use the collected rainwater to wash and scrub the photovoltaic panel, thereby saving water resources; the closing device is opened when there is sunlight, so that the photovoltaic panel fully utilizes solar energy, and is closed when there is no light, and the photovoltaic panel is cleaned; the float mechanism closes the water tank when the water tank is full, so that the collecting device no longer collects rainwater, and the degree of automation is high; the wiping mechanism will only operate when the closing device closes the photovoltaic panel, so as to prevent the photovoltaic panel from being cleaned during solar power generation and prevent leakage.

The invention discloses a bootstrapped switching circuit for SAR ADC, which comprises a voltage control unit and a switching tube unit, the voltage control unit comprises a first capacitor and a second capacitor which are connected in parallel, one end of the first capacitor and one end of the second capacitor are both connected with an external power supply, and the other end of the first capacitor and the other end of the second capacitor are both connected with the switching tube unit; the switch tube unit comprises a switch MOS tube, a first MOS tube and a second MOS tube, the grid electrode of the switch MOS tube is connected with the other end of the first capacitor and the other end of the second capacitor, when the capacitors discharge, the voltage of the grid electrode of the switch MOS tube is increased to two times of the voltage of the power supply, the substrate of the switch MOS tube is connected with the drain electrode of the first MOS tube and the source electrode of the second MOS tube, the drain electrode of the second MOS tube is connected with the source electrode of the switch MOS tube, and the grid electrode of the switch MOS tube is connected with the source electrode of the second MOS tube. And the grid electrode is connected with the grid electrode of the switch MOS tube. According to the bootstrapped switching circuit, the electric leakage behavior of the switching MOS tube is prevented, the on resistance of the switching MOS tube is reduced, and the sampling rate of the SAR ADC is increased.

The utility model provides a weighing bucket type lifting device, which relates to the technical field of binders and comprises a bucket type elevator and a weighing component, the weighing component is provided with a weighing groove with an upward opening, and a weighing outlet communicated with the weighing groove is arranged at a position close to the bottom of the weighing component. The weighing outlet is aligned and communicated with a feeding port of the bucket elevator through a guide groove, a lifting rod is vertically arranged at the bottom of the weighing groove, a weighing barrel is installed at the top of the lifting rod, a discharging port communicated with the inside and the outside is formed in the side, facing the weighing outlet, of the weighing barrel, and the bottom of the weighing barrel is connected with the top of the lifting rod through a weight sensor. The weighing bucket type lifting device solves the problem that original raw materials need to be transferred to be automatically conveyed through a conveying device after being weighed, and is reasonable in structure, easy to operate, convenient to use, high in practicability and suitable for popularization and application. And the weighing data is accurate.

The safety valve for the natural gas conveying pipeline comprises a safety valve body, an output end and an input end, the output end is arranged on the right side of the safety valve body, and the input end is arranged on the left side of the safety valve body. By arranging the mounting pipe, the sponge and the sealing assembly, when natural gas is conveyed to the output end through the input end, moisture and impurities in the natural gas can be sucked into the sponge, meanwhile, holes in the sponge cannot hinder circulation of the natural gas, the moisture and the impurities in the natural gas are prevented from eroding the safety valve body, and the safety valve is safe and reliable. The service life of the safety valve body is guaranteed, and the problems that in the actual use process, due to the fact that natural gas contains a certain amount of moisture and impurities, the interior of an existing valve does not have the moisture and impurity adsorption function, the valve is prone to being corroded, the service life of the valve is prone to being shortened, and the use cost is increased are solved. And certain limitation exists.

The invention discloses a powder conveying device, and relates to the technical field of powder conveying. In the present application, the powder conveying device comprises: the interior of the tank body is arranged to be hollow, and the upper surface of the tank body is arranged to be plane; the end cover is arranged above the tank body, and the lower surface of the end cover is fitted and connected with the upper surface of the tank body; the rotating body is arranged below the tank body, the interior of the rotating body is arranged to be hollow, a conveying shaft is arranged inside the rotating body, and a conveying pipeline is arranged on the right side of the rotating body; the conveying motor is arranged on the left side of the rotating body; the discharging body is arranged on the right side of the discharging body, and a discharging port is opened below the discharging body; the pneumatic ball valve is arranged above the end cover, and the pneumatic ball valve is fixedly connected to the end cover; the locking device is arranged on the periphery of the end cover and the tank body, and the locking device is arranged in the middle of the connection between the end cover and the tank body. The present invention is used to prevent the problem that the filter cartridge inside the tank body for conveying powder needs to be disassembled and assembled on the top of the silo to clean the inside of the filter cartridge after long-term use, resulting in a decrease in the sealing performance of the device.

The invention discloses an electric power-assisted steering system and a crane thereof. The electric power-assisted steering system comprises a steering angle sensor, an electric steering control module, an electric cylinder controller, an electric cylinder, wheels and a steering axle which are connected in sequence, the electric steering control module is connected with the steering switch, the electric steering control module and the electric cylinder controller are both connected with the power source, and the power source provides electric energy for movement of the electric cylinder. The electric cylinder is used for replacing an existing hydraulic power-assisted oil cylinder, and an electric control program is used for replacing existing complex rod system mechanism connection; the structure is simplified, hydraulic oil is prevented from being used, and the electric development requirement is met.

The utility model discloses a bag bottom forming heating mechanism of a bag making machine, which is characterized in that the bag bottom forming heating mechanism comprises a heating assembly, the heating assembly is arranged behind a bag bottom folding forming station and in front of a bottom paste bonding station, when a folded and formed bag bottom is conveyed to the heating assembly, a binding agent is attached to the folding end of the bag bottom, and the binding agent is attached to the bottom paste bonding station. The heating temperature of the heating assembly can make the binder melt to achieve bonding of the folding end of the bag bottom. The packaging bag is simple in structure and reasonable in design, the stability of the shape of the bag bottom of the packaging bag after being folded can be ensured, the sealing effect is improved, and it is ensured that the bag bottom cannot be exposed.

The utility model discloses an acid etching liquid regeneration cycle copper recovery device, which relates to the technical field of etching liquid regeneration cycle and comprises an electrolytic tank, a cover plate is arranged on the upper side of the electrolytic tank, an ionic membrane is fixedly connected inside the electrolytic tank, and a cathode reaction tank is formed inside the electrolytic tank and on the left side of the ionic membrane. The lower end of the cathode port penetrates through the upper side of the cover plate and is fixedly connected with a cathode reaction rod, a T-shaped sliding groove is formed in the left side of the cathode reaction tank, a T-shaped sliding block is slidably connected into the T-shaped sliding groove, a connecting rod is fixedly connected to the right side of the T-shaped sliding block, and a removing sleeve is fixedly connected to the right side of the connecting rod. And the interior of the removing sleeve is in sliding connection with the surface of the cathode reaction rod. Through the arrangement of the T-shaped sliding groove, the T-shaped sliding block, the connecting rod, the push rod and the removing sleeve, the copper simple substance on the surface of the reaction rod can be effectively removed, the reduction reaction rate of bivalent copper ions is increased, and the working efficiency of copper recovery is effectively improved.

This utility model discloses a raw material storage tank that facilitates pipeline integration, relating to the field of pipeline integration technology. It includes an installation plate; a tank body is fixedly installed on the installation plate; a side frame is fixedly installed on the side wall of the tank body; the side frame is fixedly installed to a support frame at the bottom of the installation plate; an installation pipe is fixedly installed on the side wall of the tank body via an installation seat; one end of the installation pipe is fixedly installed to an integrated pipe; a first material pipe and a second material pipe are integrally formed on the integrated pipe; a detachable connector is fitted to one end of the integrated pipe; the detachable connector includes an installation shell; one end of the installation shell is fixedly installed to the integrated pipe via bolts; in use, the installation pipe is fixedly installed to the material inlet on the side wall of the tank body, and one end of the installation pipe, the first material pipe, and the second material pipe are all connected to the integrated pipe, thus effectively realizing the transfer of materials through the first and second material pipes.

The utility model provides a tubular reactor which comprises a tubular reactor body, a supporting assembly is arranged on the back of the tubular reactor body, a shock insulation assembly is arranged at the front end of the supporting assembly, a supporting column can be supported and fixed through a mounting base plate, so that the supporting column stably supports a supporting cross beam, and the shock insulation assembly is arranged at the front end of the supporting column. The supporting cross beams can stably support and fix the tubular reactor body through the fixing hoops, so that the use stability of the tubular reactor body is guaranteed, resonance noise generated between the fixing hoops and the tubular reactor body can be avoided by arranging the lining pieces, and the service life of the tubular reactor body is prolonged. The vibration isolation block and the vibration isolation sheet can prevent resonance noise from being generated between the tubular reactor body and the supporting cross beam, and the vibration stopping block can prevent resonance noise from being generated between the fixing hoop and the supporting cross beam, so that the tubular reactor body is quiet in use; and meanwhile, the condition of liquid leakage caused by looseness of the joints due to resonance of the tubular reactor body can be avoided.

This utility model relates to a spray gun capable of multi-stage atomization, belonging to the technical field of multi-stage atomization spray guns. The multi-stage atomization spray gun includes: a spray pipe with a nozzle threadedly connected to its inner wall; and an anti-backflow mechanism, comprising two sealing gaskets slidably connected to the inner wall of the nozzle, and two mounting blocks fixedly connected to the inner wall of the nozzle, with the surface of the sealing gaskets slidably connected to the inner wall of the mounting blocks. Through the cooperation of springs, sealing gaskets, and mounting blocks, unidirectional limiting of the air holes within the nozzle is achieved, thereby preventing the solution inside the nozzle cavity from flowing into the air holes, ensuring the air intake of the nozzle cavity, and thus guaranteeing the atomization effect. The cooperation of a first sealing ring and a second sealing ring seals the connection between the nozzle and the spray pipe, preventing leakage at the connection and improving the atomization effect of the spray gun.

This disclosure provides a data processing method, system, electronic device, and medium for model inference scenarios. The data processing method includes: writing target data to be transmitted in the model inference scenario into at least one write area in a preset buffer using a data stream; obtaining different sensitive data and sensitive data pointer information in the write area based on sensitive data identifier information in the data stream, and generating structure information to obtain an initial sensitive data linked list; encrypting different sensitive data in the write area using a first preset data processing algorithm and the initial sensitive data linked list to generate a target sensitive data linked list, and transmitting it to the device in the model inference scenario. This disclosure can ensure the security and integrity of sensitive data transmission from the host to the device, effectively avoid the leakage of sensitive information, and ensure the security and reliability of the entire data transmission process.

The utility model discloses a kind of for instrument and apparatus based on magnetic coupling axial motion mechanism, it includes device ontology, it includes first surface and second surface;Knob device, it includes first magnetic force coupler and elastic positioning assembly of assembly setting in first surface;Turntable device, it includes second magnetic force coupler and turntable assembly of assembly setting in second surface;Wherein, first magnetic force coupler and second magnetic force coupler coaxial arrangement and form magnetic coupling, elastic positioning assembly is driven turntable assembly synchronous rotation by magnetic coupling effect, to realize knob device and turntable device non-contact transmission connection;Also disclose a kind of instrument and apparatus.The utility model uses magnetic coupling axial or radial non-contact transmission connection mode, realizes the power transmission between knob device and turntable device, avoids the wear problem of traditional mechanical connection, prolongs service life, and realizes accurate rotation positioning every gear, meets the application scene of higher requirement to rotation accuracy.

The utility model relates to the technical field of rotating slip rings, in particular to a multi-channel gas-electric-hydraulic rotating slip ring which comprises a sliding seat and a sliding sleeve which are connected in a sleeved mode, three channels corresponding to each other are formed in the sliding seat and the sliding sleeve, and sealing assemblies are installed at the positions, corresponding to the two sides of each channel, in the sliding seat and the sliding sleeve. A plurality of micropores are formed in the middle positions, corresponding to the sealing assemblies, of the sliding sleeve at equal intervals. According to the utility model, as the micropores communicated to the outside of the sliding sleeve are formed in the positions of the sealing elements, when leakage is caused by failure of the sealing elements, leaked gas and liquid can simultaneously enter the micropores when penetrating through the sealing elements, and further, the leaked gas and liquid can be effectively observed outside the sliding sleeve, so that whether leakage occurs or not can be quickly and simply judged.

The utility model discloses an anti-floating anchor rod concrete construction separation type device which is of a cylindrical structure. Comprising a first cylinder body part, a first truncated inverted cone cylinder part connected to the upper portion of the first cylinder body part, a second cylinder body part connected with an opening in the plane of the top of the first truncated inverted cone cylinder part, a second truncated inverted cone cylinder part connected to the upper portion of the second cylinder body part, and a sealing plate covering the top of the second truncated inverted cone cylinder part, the cylindrical structure is formed by encircling two longitudinally-cut semi-cylinders which are basically symmetrical, and each semi-cylinder is composed of a first cylinder part, a first truncated inverted cone cylinder part, a second cylinder part, a second truncated inverted cone cylinder part and a half body of a sealing plate which are sequentially connected. According to the anti-floating anchor rod concrete construction separation type device, the problem of leakage at the joint of the anti-floating anchor rod and the bottom plate is solved, and the construction quality at the joint of the anti-floating anchor rod and the bottom plate is guaranteed.

This utility model provides a stainless steel air conditioning pipe, relating to the field of air conditioning pipe technology, comprising: a straight air conditioning refrigerant pipe, wherein an air conditioning refrigerant elbow is connected to the side end of the straight air conditioning refrigerant pipe via a pipe fitting; a stainless steel outer pipe layer is provided on the outer side of the straight air conditioning refrigerant pipe, and a copper inner pipe layer is laminated on the inner side of the stainless steel outer pipe layer; the surface of the copper inner pipe layer is coated with a nano-modified coating and a PTFE inner lining layer; the pipe fitting is welded to the copper inner pipe layer via a connecting inner pipe; and a pipe clamp is fixed to the outer end of the pipe fitting. This utility model solves the problem in the prior art where the copper pipe and stainless steel pipe are welded together as a single piece, resulting in inconvenience during the transportation and installation of stainless steel air conditioning pipes.

According to the assembly process of the cylindrical lithium battery module provided by the invention, the reasonable assembly process flow of the cylindrical lithium battery module is adopted through the steps 1-19, so that the conditions of poor conductivity of a battery pack and liquid leakage of battery cells of the battery pack are effectively avoided; according to the invention, the battery pack welded on the positive and negative tabs of the battery cell and the protection plate spot welding are reinforced, so that the tensile strength of the battery pack welded on the positive and negative tabs of the battery cell and the protection plate spot welding is effectively improved.

The utility model discloses a fuel gas pressure regulating device capable of improving sealing performance, which relates to the technical field of fuel gas equipment and comprises a shell, an input pipe is mounted at the input end of one side of the shell, and an output pipe is mounted at the output end of the other side of the shell; first flange plates are installed at the ends, away from the shell, of the input pipe and the output pipe. The first flange plate, the first sealing ring, the second flange plate and the second sealing ring are installed, the other side of the shell is connected with the input pipe, it is guaranteed that the interior of the device is communicated, the output pipe is connected with the shell, gas output is facilitated, one end of the input pipe and one end of the output pipe are fixedly connected with the first flange plate, and the first flange plate is connected with the first sealing ring; and the first flange plate and the second flange plate are connected through the connecting screw rod, the second flange plate and the second sealing ring are fixedly connected, the first sealing ring and the second sealing ring extrude each other, the sealing performance of the device is guaranteed, and the situation of leakage of the device is avoided.

The utility model discloses a GIS cable terminal taking clean air as an insulating medium, which comprises a main body assembly, a bottom plate, a pipeline, a control box, an incoming and outgoing line sleeve and a voltage transformer, the pipeline is fixed at the top of the bottom plate, the control box is arranged at the top of the bottom plate, the incoming and outgoing line sleeve is arranged on the pipeline, and the voltage transformer is arranged on the pipeline. The voltage transformer is located at the top of the pipeline; and the connecting assembly is arranged at the top of the pipeline and comprises a connecting piece, a locking piece, a rotating piece, a sealing piece and a limiting piece, and the connecting piece is arranged at the bottom of the voltage transformer. Compared with the prior art, the voltage transformer has the advantages that the voltage transformer is connected and fixed through the connecting assembly, operation is convenient and fast in the mounting and dismounting process, the maintenance efficiency of the voltage transformer can be improved, the sealing performance of the voltage transformer can be improved after mounting is completed, and then the situation of gas leakage is avoided.

The utility model belongs to the technical field of oil tank sealing, and disclose a rubber sealing element for oil tank, including sealing assembly, sealing assembly fixed mounting is in the oil tank mouth outer surface, sealing assembly movable sleeve is equipped in the outside of oil tank cover connecting shaft, the outside fixed connection of sealing assembly has cleaning assembly, the side fixed connection of sealing assembly has the support ring of being located in the bottom of cleaning assembly, sealing assembly is by the compression ring, first connecting ring and sealing ring, the compression ring, sealing ring, first connecting ring and support ring are connected in head and tail, form the closed space. The utility model is because the setting of sealing ring, under the cooperation of compression ring, first connecting ring and support ring, can form sealed cavity, and because the hardness of support ring is greater than sealing ring makes the compression sealing ring to expand inwards and the shaft between oil tank cover and lower end thread connection is closely attached, avoids the situation that oil body is exuded from the thread connection gap during the shaking of rapid operation.

This utility model discloses a fixed installation structure for water supply, drainage, and HVAC systems in buildings, relating to the field of water supply and drainage technology. It includes an installation plate, with first sliding grooves symmetrically formed on both sides of the bottom end of the installation plate. First sliders are slidably connected to the inner walls of both sets of first sliding grooves. Movable plates are fixedly connected to the bottom ends of both sets of first sliders. Second sliding grooves are symmetrically formed on the bottom ends of both movable plates. Second sliders are slidably connected to the inner walls of both sets of second sliding grooves. Movable blocks are fixedly connected to the bottom ends of both sets of second sliders. Through the structure of a first handwheel, a first screw, a first slider, a movable plate, a second handwheel, a second screw, a second slider, and a movable block, the water supply, drainage, and HVAC pipes can be positioned on the center line after installation, facilitating subsequent connection operations, preventing interference with the installation effect, and solving the problem that traditional water supply, drainage, and HVAC pipes have fixed positions during installation and cannot be adjusted.