35results about How to "Increase internal pressure" patented technology

The utility model relates to a safe liquid ammonia storage tank, and aims to solve the problems that molecules in liquid ammonia are very easy to volatilize under the condition that the temperature is increased, so that when the liquid ammonia is transported, ammonia gas in the liquid ammonia is volatilized due to the fact that a transportation tank is not cooled in time, the pressure in the transportation tank is increased, and the explosion phenomenon possibly occurs. The storage tank comprises a storage tank body, a feeding port is formed in the top of the storage tank body, cold water in a cooling box effectively flows to a liquid inlet pipe by opening an electromagnetic valve and flows into a conveying pipe through the liquid inlet pipe, and due to the fact that the conveying pipe evenly surrounds the interior of the storage tank body, the conveying pipe can be conveyed into the storage tank body. Therefore, the storage tank body can be uniformly cooled, liquid ammonia in the storage tank body is effectively prevented from being volatilized, the internal pressure of the storage tank body is prevented from being increased, the safety is improved, water passing through the conveying pipe flows back into the cooling box again through the liquid outlet pipe and is cooled again in the cooling box, and cyclic utilization of water resources is achieved.

The invention provides a quality detection device for constructional engineering management, and belongs to the technical field of civil engineering quality inspection.The quality detection device for constructional engineering management comprises a supporting plate, a motor frame and a double-spliced cylinder, two driving rollers are arranged on the surface of a circular inner ring, and a knocking block is movably connected to the end of a telescopic shaft; the lower surface of the circular plate is fixedly connected with a corrugated pipe; one side of the bottom of the corrugated pipe is connected with a spray pipe; the knocking block knocks the drill bit, the impact force of the drill bit is enhanced, water in the water tank is continuously sprayed out through the spraying pipe, powder residues in holes are washed away, powder residues and dust are prevented from splashing, a drawing test is conducted on a building through the upward force of the drill bit, then the internal strength of the building is judged, and through observation of scale marks on transparent glass, the building can be accurately measured. Whether the liquid levels of the two water tanks are in the same scale value is judged, the drill bit has knocking force on the surface of the building, and whether the surface hardness of the building reaches the standard or not and whether peeling or fragile phenomena exist or not are judged.

The invention discloses atomization powder making equipment capable of guaranteeing safety through inert gas, relates to the technical field of electrode induction gas atomization equipment, and solves the technical problems that only a single bar can be clamped and fixed, shutdown is possibly needed for bar replacement in the electrode induction gas atomization equipment, and the risk of inert gas leakage can be caused during shutdown replacement. Comprising an atomizing tower, and an exhaust pipe is arranged on the side face of the bottom of the atomizing tower; the smelting furnace is mounted at the top of the atomizing tower, and a continuous feeding and replacing mechanism for automatically replacing charge bars is arranged in the smelting furnace; according to the invention, the smelting processing of the metal bars is not influenced, the continuous feeding of the plurality of metal bars can be realized, the powder processing continuity of the whole atomization powder processing equipment is improved, the cost of shutting down to replace the metal bars is reduced, the replacement time of the metal bars is saved, inert gas leakage caused by replacement of the metal bars is avoided, and the production efficiency is improved. And the atomization powder preparation efficiency and the powder preparation safety are improved.

The invention is suitable for the technical field of medical instruments, and provides equipment capable of monitoring central venous pressure in real time and a using method. The central venous pressure equipment comprises a central venous catheter connector and a central venous catheter connector, wherein one end of the central venous catheter connector is communicated with a central venous catheter; an infusion tube; and the number of the fixing assemblies is three. According to the invention, the pressure sensor is manually operated to drive the rectangular frame to enter the central venous pressure sensor connector, and when the surface of the pressure sensor is in contact with the inner surface of the central venous pressure sensor connector, the first spring drives the conical block to enter the first through hole formed in the rectangular frame; according to the utility model, rapid installation and automatic self-locking processing are carried out on the pressure sensor and the central venous pressure sensor connector, and the phenomenon that the equipment falls off due to external acting force in the use process is prevented, so that the installation portability and firmness of the product in the actual use process are improved.

The present invention provides a leakage detection device for a reciprocating compressor air valve, which relates to the technical field of sealing test. The leakage detection device body comprises a boosting cavity, a secondary detection cavity and a main detection cavity. A boosting mechanism is inserted at the top of the boosting cavity, an electric heating wire is embedded on the inner wall of the boosting cavity, the air valve body to be tested is pressed against the bottom of the boosting cavity, the secondary detection cavity is sleeved on the side of the air valve body to be tested, and a sealing ring is integrally formed at the edge of the secondary detection cavity. The leakage detection device can timely detect leakage problems in the leakage detection device itself through the two detection cavities, so as to avoid the interference of the air tightness state change of the device itself on the detection result of the air valve to be tested. The positioning detection mechanism at the bottom can more accurately determine the specific leakage area of ​​the air valve, so that the final detection result is more accurate, and an additional verification and detection function is provided in the top boosting mechanism.

The invention relates to the technical field of boiler water supply pipelines, in particular to a boiler main water supply flow meter with a built-in nozzle, which comprises a preheating flow guide device, a treatment device and a water supply device, and is characterized in that up-and-down communicated flowing of scale inhibitor liquid is realized through a hole channel formed in a leakage disc, and sealing and leakage prevention of the scale inhibitor liquid are realized through a rubber ring; high-temperature steam enters the steam cylinder, so that the internal pressure of the steam cylinder is increased, the steam is expanded to upwards extrude a second disc, the scale inhibitor liquid flows into a hemispherical shell along an explosive conveying pipe and flows out through a hole channel in the hemispherical shell, the scale inhibitor liquid is mixed with boiler main feed water in the cylinder, and the boiler main feed water is prevented from scaling in a pressure pipeline; through the arrangement, the steam conveying structure is arranged in the water supply pressure pipeline of the boiler main water supply flow meter, meanwhile, the steam conveying structure can be used for carrying out starting control on adding of anti-scaling liquid medicine, and linkage control over steam thermal deoxidization and water body anti-scaling on boiler main water supply is improved.

The present invention relates to a battery case and a secondary battery. More particularly, the present invention relates to a battery case including a battery case and a gas adsorber accommodated inside the case, wherein a gas adsorption pack is opened as the internal pressure of the case increases; and a secondary battery. According to the present invention, the present invention has an effect of providing a battery case capable of quickly adsorbing gas generated inside a secondary battery due to abnormal operation or degradation of the secondary battery by opening a gas adsorption pack filled with a gas adsorbent accommodated inside the case without an additional system or sensing device to secure the stability of the secondary battery, prevent deformation of the case, and reduce the resistance of the secondary battery and allowing the secondary battery to be operated even after the gas adsorption pack is opened; and a secondary battery.

The utility model relates to the field of hydraulic devices, in particular to a hydraulic pressurizing device which comprises a shell, a normal-pressure cavity is formed in the shell, a pressurizing cavity communicated with the normal-pressure cavity is further formed in the shell, and a piston rod is connected in the pressurizing cavity in a sliding mode. The shell is provided with an oil inlet through which hydraulic oil flows into the normal pressure cavity so as to drive the piston rod to extrude into the pressurizing cavity, an oil outlet through which high-pressure hydraulic oil is output to the outside from the pressurizing cavity, and an oil drainage port through which the hydraulic oil flows out from the pressurizing cavity; the shell is provided with a control valve used for controlling the flow direction of hydraulic oil so as to drive the piston to move in a reciprocating mode, and the oil inlet, the normal pressure cavity, the oil drainage opening and the pressurization cavity are all communicated with the control valve. The hydraulic supercharging device has the effects that the use convenience of the hydraulic supercharging device is improved, and supercharging can be directly completed by means of hydraulic power of the injection molding machine.

The present invention provides a battery module (1) having an expansion member (31) and a spring member (32) so as to prevent or delay the release and explosion of thermal energy and flames and to prevent the occurrence of a chain fire between other battery modules. The expansion member (31) may be a reverse disk (31R), and the reverse disk (31R) is shaped to reverse with respect to an internal pressure greater than or equal to a predetermined yield pressure that is less than an explosion pressure defined as a minimum pressure that enables explosion of the battery module (1) to expand the internal space of the battery module (1), thus, an increase in internal pressure and an explosion are prevented or delayed.

The present invention relates to the technical field of compressor pipeline processing, in particular to an arc-shaped bending device for refrigerator compressor pipeline, comprising a processing table, wherein a movable groove is provided on the processing table, a plurality of arc-shaped bending components and a plurality of concave matching blocks are arranged on the top of the movable groove, the arc-shaped bending components and the concave matching blocks are arranged in sequence, a first fixing frame is arranged at the bottom of the arc-shaped bending component, and a second fixing frame is arranged at the bottom of the concave matching block; the present invention enables the refrigerator compressor pipeline to perform multiple-stage U-turn bending in sequence through the coordinated movement and extrusion of the arc-shaped bending components and the concave matching blocks, thereby effectively improving the bending efficiency of the refrigerator compressor pipeline and reducing the auxiliary steps in the bending process.

The utility model discloses a heat supply engineering sewage circulating treater, which relates to the technical field of sewage circulating treatment and comprises a shell machine body, a circulating sewage tank is arranged in the shell machine body, and a treatment component is arranged at the top of the shell machine body and is used for driving the circulating sewage tank to lift and quickening the flow speed of heat supply engineering sewage. A pressing assembly is arranged at the top of the shell machine body and used for pressing heat supply engineering sewage in the filtering process to facilitate rapid filtering of the heat supply engineering sewage, the treatment assembly comprises two driving boxes, and the two driving boxes are fixedly arranged on the two sides of the shell machine body respectively. According to the circulating sewage tank, the connecting rod is driven by the external threaded cylinder to ascend and descend along the internal threaded rod, so that heat supply engineering sewage in the circulating sewage tank moves, the flow speed of the heat supply engineering sewage is increased, the internal heat supply engineering sewage is filtered through the filter screen, and the sewage circulating treatment efficiency is improved.

The utility model discloses a cable with strong anti-pressure capability, which relates to the technical field of cables, and comprises a wear-resistant pipe, an anti-pressure assembly is arranged on the inner side of the wear-resistant pipe, the anti-pressure assembly comprises a buffer layer arranged on the inner side of the wear-resistant pipe, an anti-pressure frame is arranged on the inner side of the buffer layer, a cable assembly is arranged on the inner side of the anti-pressure frame, and the cable assembly is arranged on the inner side of the anti-pressure frame. The cable assembly comprises a rubber layer installed on the inner side of the compression-resistant frame, an insulating layer is installed on the inner side of the rubber layer, and a supporting pad is installed on the inner side of the insulating layer. According to the utility model, the compression-resistant assembly is installed, the buffer layer in the compression-resistant assembly is installed at the inner side of the wear-resistant pipe, the stability of the buffer layer is ensured, the buffer layer is made of a rubber material, the external pressure to the internal pressure is improved, the safety of the cable is ensured, the compression-resistant performance of the cable is improved, the buffer layer supports the inner compression-resistant frame, and the stability of the compression-resistant frame is ensured; the compression-resistant frame is made of a metal material, thereby improving the strength of the cable, improving the compression-resistant performance, and guaranteeing the safety of the cable assembly at the inner side.

The utility model relates to the technical field of massage devices, and discloses a hand massage device which comprises a device body and further comprises a fixing mechanism and a control mechanism, the side face of the device body is fixedly connected with the side face of the fixing mechanism, the side face of the device body is fixedly connected with the side face of the control mechanism, and the device body comprises a lower shell. The top end of the lower shell is movably connected with an upper shell through a pin; the massage mechanisms on the surfaces of the lower air bag and the upper air bag are evenly distributed on the surfaces of the lower air bag and the upper air bag, the upper shell is connected with the upper air bag through the air guide pipe, during use, a patient is placed in the lower shell, the palm of the patient faces downwards, the lower shell is covered with the upper shell, and the upper shell and the lower shell are fixed through the fixing mechanism; the inflation device is started to inflate the interiors of the lower air bag and the upper air bag to expand, so that the massage mechanisms on the surfaces are tightly attached to the hands of the patient, the equipment is started to massage the hands of the patient, the flexibility of the equipment is improved, and the equipment is better attached to the hands of the patient.

The present invention relates to the technical field of termite control grouting, and specifically to a portable water conservancy project termite control grouting device, including a box assembly, one side of the box assembly is provided with a mounting cavity, a boost drive mechanism is installed in the mounting cavity, an auger is provided on the boost drive mechanism, a loading cavity is provided on the box assembly, the auger extends into the loading cavity, and a conveying mechanism is provided on the other side of the box assembly, and the conveying mechanism is connected to the auger. The present application can quickly move the resistance member in a direction away from the conical plug pipe fitting after the conical plug pipe fitting is inserted into the hole of the dam slope, so as to effectively make the resistance member resist the inner wall of the hole, effectively fix the position of the conical plug pipe fitting, and at the same time leave a corresponding gap for gas flow, so that the repair slurry can quickly fill the gaps in the holes in the dam, improve the firmness of the connection between the rock and concrete on the dam, improve safety, and ensure the continuity and stability of grouting.

The utility model discloses a rhythm formula negative pressure, microgravity powder conveying device, include: frame and set up in the control electric box of one side of rack, the rack with control electric box fixed installation, the inside of rack is provided with the bucket board, the bucket board is through the slide rail with the rack sliding installation, the bucket board upper end places the stirring drum, the upper end sealed installation of stirring drum has the upper bucket, the upper end of upper bucket is through bolt and the rack screw thread and is combined and is connected, the one end fixed connection of upper bucket is close to stirring drum has the feed pipe, the one end fixed connection of feed pipe is away from upper bucket has the elbow pipe, the one end fixed connection of elbow pipe is away from feed pipe has vacuum conveying device, the upper end fixed setting of vacuum conveying device has vacuum valve, the input valve fixed setting of vacuum conveying device input end, the output butterfly valve fixed connection of vacuum conveying device lower extreme.

The present invention relates to a battery case and a secondary battery. More particularly, the present invention relates to a battery case including a battery case and a gas adsorber accommodated inside the case, wherein a gas adsorption pack is opened as the internal pressure of the case increases; and a secondary battery. According to the present invention, the present invention has an effect of providing a battery case capable of quickly adsorbing gas generated inside a secondary battery due to abnormal operation or degradation of the secondary battery by opening a gas adsorption pack filled with a gas adsorbent accommodated inside the case without an additional system or sensing device to secure the stability of the secondary battery, prevent deformation of the case, and reduce the resistance of the secondary battery and allowing the secondary battery to be operated even after the gas adsorption pack is opened; and a secondary battery.

The invention relates to the technical field of pressure swing adsorption towers, and particularly discloses a pressure swing adsorption tower with a gas uniform distribution filtering mechanism, the pressure swing adsorption tower comprises a tower body, the bottom end of the tower body is provided with a tower bottom cover, and the top end of the tower body is provided with a tower top cover; the three filtering and separating assemblies are mounted on the inner wall of the tower body, an adsorbent is arranged between every two adjacent filtering and separating assemblies, and reinforcing structures are arranged in the filtering and separating assemblies; and the multiple flow dividing cylinders are distributed in an array mode, and each flow dividing cylinder is located between every two adjacent filtering and separating assemblies and inserted into the corresponding adsorbent. According to the invention, the conventional mode that gas enters the adsorbent in a point-surface mode is replaced, the adsorbent enters in a three-dimensional space mode, the pulverization or failure of the adsorbent close to the gas inlet is slowed down, the replacement frequency of the adsorbent is reduced, the production cost is reduced, a multi-point isobaric gas conveying structure is provided, and the effect that the gas is led to the adsorbent is improved.

The utility model discloses an atomization device capable of guiding oil quickly, which comprises a shell, a liquid inlet, a liquid outlet, an oil tank, a liquid inlet, a liquid outlet, a liquid outlet, a liquid outlet, a liquid outlet, a liquid outlet and a liquid outlet, and is characterized in that the shell comprises a gas inlet end, a gas outlet end and a liquid inlet hole, and the liquid inlet hole is communicated with the oil tank; the atomization assembly is arranged on the shell, the atomization assembly is located between the air inlet end and the air outlet end, the atomization assembly comprises a liquid guide body and a heating body, and the liquid guide body is communicated with the oil bin; the cover body assembly comprises a guide column, the end part of the guide column is sleeved with a sealing sleeve, and the outer periphery of the sealing sleeve seals the end part of the guide column; after the tobacco tar is injected into the tar bin, the cover body assembly is operated, the sealing sleeve is inserted into the liquid injection hole to seal the tar bin, meanwhile, the pressure intensity in the tar bin is increased, and the tobacco tar enters the liquid guide body. The liquid guide body is rapidly filled with the tobacco tar through the change of the pressure difference, the heating body can be electrified without waiting, the heating body generates heat to heat the liquid tobacco tar in the liquid guide body into a gas state, and dry burning of the heating body is effectively prevented.

The present invention discloses an electrostatic and filter bag combined industrial dust removal equipment, comprising a cooling spray box and a filter bag dust removal device, wherein a partition plate is arranged in the cooling spray box, and a filter slot is provided on the partition plate, and an air inlet is provided on one side of the cooling spray box, and a spray pipe is connected to the inner top of the cooling spray box, and the spray pipe is connected to a liquid pump below the partition plate through a circulation pipeline, and the cooling spray box is arranged on a base, and exhaust fans are symmetrically arranged on the front and rear side walls of the cooling spray box, and a cover is fixedly connected to the outside of the exhaust fan. The electrostatic and filter bag combined industrial dust removal equipment is provided with an electric telescopic rod and an air pump, and under the mutual cooperation of the electric telescopic rod and the air pump, the air storage box will move up and down to spray air through the purge port to purge the dust attached to and blocked on the outer wall of the filter bag, thereby preventing the filter bag from being blocked by dust and causing the internal pressure of the filter bag dust removal device to be too high, and at the same time facilitating the enrichment of the functionality of the device.

The invention relates to the technical field of water dispensers, in particular to a direct drinking water purifier with water purification and disinfection functions, which comprises a water dispenser body, a smart seat is fixedly mounted at the top of the water dispenser body, a placement box is arranged below the front side of the water dispenser body, and an air pump is fixedly mounted in the water dispenser body. A water storage tank is fixedly installed at the top end in the water dispenser body, and a heating water container is arranged below the water storage tank. Steam of the water container is heated by means of the water dispenser body, a plug is jacked open, gas generated by a gas pump is mixed with the steam, pressure is supplied to an ozone tank, ozone is conveyed to the water storage tank, and water purification and safety are improved; a cup is placed on a disinfection disc to press a pressure release valve; steam disinfection and hairbrush physical scrubbing are carried out; high efficiency and environmental protection are realized; the pressure is increased through steam to the sleeve, a valve is automatically opened to guide clean water to wash a filter element, so that the cleaning is enhanced, the service life is prolonged, and the manual maintenance is reduced.

The application discloses an atomizer, a liquid storage mechanism, an atomizing mechanism and an electronic atomizing device thereof, which comprises the atomizing mechanism, a first liquid storage cavity is arranged in the atomizing mechanism, and the first liquid storage cavity is used for storing a liquid substrate; a driving part and a connecting part are arranged on one side of the atomizing mechanism, the connecting part is provided with a first connecting channel which is communicated with the first liquid storage cavity; the liquid storage mechanism is provided with a second liquid storage cavity, and the second liquid storage cavity is used for storing the liquid substrate; a pressurizing part and a butt joint part are arranged on one side of the liquid storage mechanism, the butt joint part is provided with a second connecting channel which is communicated with the second liquid storage cavity and is in a closed state. The first liquid storage cavity of the atomizing mechanism and the second liquid storage cavity of the liquid storage mechanism are communicated through butt joint of the connecting part and the butt joint part, and the pressurizing part is driven by the driving part, so that the pressurizing part can increase the internal pressure of the second liquid storage cavity, and then the speed of the liquid substrate in the second liquid storage cavity entering the first liquid storage cavity is improved.

The utility model discloses solid gasification equipment for a fumigation pesticide application device, which relates to the technical field of fumigation pesticide application equipment and comprises a base, a gasification box fixedly connected to the top end of the base, a pesticide discharging unit arranged in the gasification box and a pressurizing unit arranged in the base and the gasification box. The medicine placing unit comprises a moving seat arranged in the middle of the gasification box, a placing assembly arranged in the moving seat and an adjusting assembly arranged in a shell of the gasification box; the pressurizing unit comprises an air inlet assembly arranged in the base and a blocking assembly arranged at the top end of the gasification box. According to the solid-state gasification equipment for the fumigation medicine applying device, the temperatures in different placing grooves can be different, then different solid medicines are heated, meanwhile, the solid medicines are convenient to take, the internal pressure intensity of the gasification box can be improved, and the utilization efficiency of the solid medicines is improved.

The utility model relates to the technical field of sludge dewatering machines, and discloses a deep dewatering type stacked spiral sludge dewatering machine which comprises an equipment base and further comprises an adjusting device, one side of the top of the equipment base is fixedly connected with an equipment main body, and the adjusting device is fixedly connected in one side of the equipment main body. A filtering device is fixedly connected to the interior of the equipment body, a stirring device is fixedly connected to the other side of the top of the equipment base, the adjusting device comprises a mounting plate, an electric telescopic rod is fixedly connected to the other side of the mounting plate, and a transfer rod is fixedly connected to the other side of the electric telescopic rod; the other side of the transfer rod is fixedly connected with a back pressure plate; according to the sludge dewatering device, the electric telescopic rod and the transfer rod are connected with the back pressure plate, the back pressure plate closes the sludge outlet at the beginning, the internal pressure between the spiral shaft and the back pressure plate is increased, sludge which is not sufficiently concentrated at the beginning is concentrated and dewatered, the dewatering effect of the sludge is favorably improved, and insufficient dewatering is prevented.

The utility model discloses a liquid ammonia loading and unloading system in an indigo blue production process. The liquid ammonia loading and unloading system comprises a liquid ammonia storage tank, an ammonia gas compressor, a first crane pipe, a liquid ammonia tank car and a second crane pipe, a vent hole, a liquid inlet and a liquid outlet are respectively formed in the top of the liquid ammonia storage tank, the vent hole of the liquid ammonia storage tank is communicated with one end of an ammonia gas compressor, the other end of the ammonia gas compressor is communicated with one end of a first crane pipe, and the other end of the first crane pipe is communicated with an upper gas hole of the liquid ammonia tank car; a lower liquid opening of the liquid ammonia tank car is communicated with one end of the second crane pipe, and the other end of the second crane pipe is respectively communicated with a liquid inlet and a liquid outlet of the liquid ammonia storage tank. The utility model has the advantages that the connecting structure is simple and easy to realize, the loading and unloading of liquid ammonia are realized, the liquid ammonia steel cylinder does not need to be manually operated, the hidden dangers of safety and environmental protection are eliminated, the safety is improved, and the operation is convenient and quick; recovery of residual liquid ammonia in the second crane pipe is achieved, waste and environmental pollution of the residual liquid ammonia are avoided, and meanwhile the safety of field personnel is guaranteed.

The invention discloses a rigid polyurethane foam material and a preparation method thereof. The rigid polyurethane foam material is prepared from the following raw materials in parts by mass: 100 parts of polyol, 2-6 parts of a surfactant, 2-6 parts of a catalyst, 2.2-3.5 parts of water, 14-20 parts of a pentane foaming agent, 1.8-4 parts of a butane foaming agent and 140-170 parts of polyisocyanate, and has the performance advantages of low core density, quick demolding, low heat conductivity coefficient and the like; meanwhile, the foam strength, economical efficiency and environmental friendliness are considered, and the foam can be used for preparing foaming thermal insulation materials of household appliances such as refrigerators. The invention also provides a preparation method of the rigid polyurethane foam material.

The invention provides a vacuum heat insulation material which can suppress the inflow of gas maintained before vacuum, and can exert high heat insulation performance. The laminated film comprises a core material (10) and a coating material (20) formed by sealing the peripheral edge part of one or a plurality of laminated films, the coating material (20) is provided with a heat welding layer (21) arranged on the core material (10) side and a base material layer (22) arranged on the outer side of the heat welding layer (21), and more than one thin film barrier layer (24) is arranged between the heat welding layer (21) and the base material layer (22).

The utility model discloses a hydrochloric acid storage tank pressure adjusting device which comprises a positive pressure liquid seal tank, a negative pressure liquid seal tank, an exhaust pipe and an air inlet pipe, the positive pressure liquid seal tank is provided with a positive pressure liquid seal groove, an exhaust port and a first communication port, liquid in the positive pressure liquid seal groove forms a first liquid level surface, the upper end of the exhaust pipe is communicated with a hydrochloric acid storage tank through the first communication port, and the lower end of the exhaust pipe is communicated with the air inlet pipe. The lower end of the exhaust pipe is lower than the first liquid level surface; the negative pressure liquid seal tank is provided with a negative pressure liquid seal groove, an air inlet and a second communication port used for being connected with the hydrochloric acid storage tank, liquid in the negative pressure liquid seal groove forms a second liquid level surface, the upper end of the air inlet pipe is communicated with the external environment through the air inlet, and the lower end of the air inlet pipe is lower than the second liquid level surface. The positive-pressure liquid sealing tank and the negative-pressure liquid sealing tank form a positive-negative pressure adjusting system, the pressure of the hydrochloric acid storage tank can be automatically adjusted and controlled, pressure balance of the hydrochloric acid storage tank is achieved, and the risk of damage to the hydrochloric acid storage tank is reduced.

The pressing bottle cap comprises an upper cap body and a lower cap body, the upper cap body and the lower cap body are connected through a hinge portion, the lower cap body is provided with a liquid outlet portion and a pressing portion which are oppositely arranged, the liquid outlet portion comprises a liquid outlet formed in the lower cap body and a liquid outlet nozzle arranged on the liquid outlet, and the pressing portion is arranged on the liquid outlet nozzle. The pressing part is arranged to be a boss protruding upwards, and the side wall of the boss inclines towards the center. By means of the mode, when liquid is poured, downward pressing acting force is applied to different areas of the pressing part so as to control the liquid outlet amount of the liquid outlet part in a grading mode.

The application discloses a wheel structure of a full-sealed sintering trolley, which is applied to the technical field of sintering trolleys and is characterized in that an inner sealing groove and an outer sealing groove are arranged on a closed ring, sealing pipes are arranged in the inner sealing groove and the outer sealing groove, a sealing ring on the sealing pipe is in sliding contact with a sealing contact ring, double-layer sealing between the closed ring and the sealing contact ring is realized, when the sealing pipe is heated, the sealing pipe is deformed due to the thermal expansion of the gas in the sealing pipe, the sealing ring is further close to the sealing contact ring, the sealing effect between the outer ring of the closed ring and the sealing contact ring is effectively improved, the internal pressure of the two sealing pipes is exchanged through a communication pipe, the internal pressure of the other sealing pipe is simultaneously improved, the change of the temperature outside the wheel is adapted to, and the sealing effect of the sealing pipe of the inner ring and the sealing pipe of the outer ring is simultaneously improved.