41results about How to "Guaranteed pressure value" patented technology

The invention discloses an operation control method for a multi-split air conditioner. The operation control method for the multi-split air conditioner includes the following steps that when an outdoor unit is started, a compressor is controlled to operate for a first preset time period according to the initial frequency; a first pressure value of refrigerant pressure at the high-pressure side of the air conditioner is detected within the first preset time period; whether frequency increase of the compressor is needed or not is judged according to the first pressure value; and when frequency increase of the compressor is needed, the frequency of the compressor of the outdoor unit is increased, so that the refrigerant pressure at the high-pressure side of the air conditioner is increased before reversing of a four-way valve. The invention further discloses an operation control device for the multi-split air conditioner. By means of the method and device, the reliability of operation of the multi-split air conditioner is improved.

The invention provides a novel sprinkling device with a microbubble device for a vegetable greenhouse. The novel sprinkling device includes a water inlet pipe, a pressure box, a connection water pipe, a transition water tank, a spraying pipe, a water pump, spraying nozzles, an air compressor, a pipe head, an air spraying pipe, a pressure gage, a water level meter, an air pipe, a control valve, an oxygen outlet pipe, and an oxygenator; the water inlet pipe is arranged on a left central part of the pressure box; the transition water tank is connected to and arranged on the right side of the pressure box through the connection water pipe; and the spraying pipe is connected to and arranged on the right side of the transition water tank. According to the invention, the pressure box, the air compressor, the air spraying pipe, the pressure gage, the water level meter, the control valve and the oxygenator are arranged on the novel sprinkling device, bubbles can be easily smashed into micro-nano bubbles, the micro-nano bubbles are evenly fused with a sprinkling liquid, the oxygen content of the micro-nano bubbles can be improved, starting and stopping of the air compressor can be intelligently controlled, the pressure value of the pressure box can be kept in a rated range, the planting technique demands of the vegetable greenhouse can be met, and the quality of vegetables can be improved.

The invention relates to an accurate shape control method and device used after sterilization of infusion type products and belongs to the technical field of medical equipment. The method comprises the steps as follows: (1) setting temperature and pressure of a sterilization heating stage and a sterilization cooling stage at stages; and (2) corresponding to each stage, setting initial temperatureT initial and final temperature T final, setting initial pressure P initial and final pressure P final, setting temperature change rate delta T and controlling temperature change, wherein the relationbetween the pressure PX and instant temperature TX required in the stage is shown in the description; and detecting actual pressure P actual in a cavity of a sterilizer and enabling P actual to approach PX by a pressure control method. By the aid of the sterilization heating stage and the sterilization cooling stage, the temperature change rate can be controlled accurately, the pressure can be adjusted accurately, pressure inside and outside a product can be kept balanced, and the good shape of the product can be kept.

The invention discloses a natural drug extraction device comprising a fixed baseplate; the right side of the upper end surface of the fixed baseplate is fixedly provided with a sealed pot; a high-pressure extraction space is arranged in the sealed pot; an extrusion feeding device is arranged on a middle position of the upper end surface of the sealed pot; a sealing hole is formed in a center position of the upper end wall of the high-pressure extraction space; the left side of the upper end surface of the fixed baseplate is fixedly connected with a solvent storage tank; a filter plate locatedin a horizontal direction is arranged on a middle position of the high-pressure extraction space; a clearing device moving back and forth is arranged at the front side of the upper end of the filter plate; a drug residue tank is arranged at the lower end of the rear end surface of the sealed pot; and a drug discharging pipe is arranged at the lower side of the right end surface of the sealed pot.When the natural drug extraction device works, a drug is extruded and pushed to smash an organizational structure of the drug in a descending process, so that effective components are conveniently extracted by using a solvent; and the work of clearing drug residues is automatically finished, so that the labor intensity can be lowered, and the labor cost can be reduced.

The invention discloses a pediatric negative-pressure gastric lavage device for a pediatric doctor. The pediatric negative-pressure gastric lavage device comprises a gastric lavage head, a gastric tube and a shell. The gastric lavage head is of an elliptical structure and communicated with a gastric tube. The gastric tube comprises an air inlet tube, a liquid inlet tube and a liquid discharge tube. The outer surface of the gastric lavage head is evenly and alternately provided with a liquid inlet, an air inlet and a liquid discharge opening which are communicated with the air inlet tube, the liquid inlet tube and the liquid discharge tube respectively. The other end of the air inlet tube is communicated with an air outlet of a second air pump. According to the pediatric negative-pressure gastric lavage device, by means of the non-water-tank type design, the size of the pediatric negative-pressure gastric lavage device is reduced, and movement is facilitated; by adding a first liquid flow meter, the flowing speed of the discharged liquid can be monitored, the pressure value of the negative pressure in a stomach is ensured, and the injuries of inner organs are avoided; by means of the automatic control, the work difficulty of operators is reduced.

The invention discloses a wastewater treatment device for a livestock and poultry farm. The wastewater treatment device comprises a fixed plate, a sealed cabinet is fixedly arranged on the right sideof the upper end face of the fixed plate, a wastewater inlet pipe is arranged on the upper end face of the sealed cabinet, a wastewater inlet is formed in the wastewater inlet pipe, a treatment spaceis arranged in the sealed cabinet, a sealing opening is formed in the center of the upper end wall of the treatment space, a medicinal liquor storage cabinet is fixedly connected to the left side of the upper end face of the fixed plate, a horizontal filtering carrier plate is arranged in the center of the treatment space, a sweeping device which moves in the front-and-back direction is arranged on the front side of the upper end of the filtering carrier plate, a waste residue cabinet is arranged at the lower end of the rear end face of the sealed cabinet, and a water outlet pipe is arranged on the lower side of the right end face of the sealed cabinet.

The invention provides a wall-mounted oxygen inhalator. The wall-mounted oxygen inhalator comprises a cup, a float flow meter, an upper connecting piece, a connector and a filtering loop, wherein a lug boss is arranged on the lower end face of the connector; a groove is formed in the lug boss; the bottom of the groove is cone-shaped and an oxygen outlet is formed in the cone-shaped wall; a lug boss is arranged on the upper end of a lower connecting piece and external threads are formed on the lug boss; a first flange and a threaded blind hole are formed at the lower end of the lower connecting piece; internal threads matched with external threads on the lower end of the connector are formed on the upper end of an end cover, and an oxygen pipe connection is formed on the wall of the end cover; external threads are formed on the upper end of an end cap, while a second flange is formed on the lower end of the end cap; a blind hole is formed in the axial direction and an oxygen discharge channel is formed in the lower end of the blind hole. The wall-mounted oxygen inhalator is simple in structure, low in processing technic requirements, compact in structure, and easy to manufacture and assemble.

The invention belongs to the technical field of batteries, and discloses a battery module and a battery pack. The battery pack comprises the battery module. The battery module comprises a module shell, a battery cell assembly, a detection unit and a discharging unit, wherein a containing cavity is formed in the module shell; a discharging channel is formed in the side wall of the module shell in a hollowed-out mode; the discharging channel communicates with the containing cavity and the exterior of the module shell, and a purification unit is arranged in the discharging channel and used for purifying gas penetrating through the discharging channel; the battery cell assembly is mounted in the containing cavity; the detection unit is arranged in the module shell and used for detecting an air pressure value and temperature in the module shell; and the discharging unit is arranged in the module shell and used for guiding gas in the containing cavity into the discharging channel. According to the invention, the discharging unit can guide heat and gas into the discharging channel in time and finally discharge the heat and the gas out of the module shell, and the gas can be purified and filtered by the purification unit when penetrating through the discharging channel, so environment pollution is avoided.

The invention discloses an integrated air valve for a massage appliance, which comprises a valve body, an air intake channel and a plurality of air delivery branches are arranged in the valve body, the air intake channel has a plurality of diversion ports, and the diversion ports and gas delivery branches are connected; the gas transmission branch is provided with a check valve and an exhaust valve; the check valve includes a check port and a disc, and the exhaust valve includes an exhaust port and a movable spool; the movable spool is set On the other side of the valve disc relative to the check port, the movable valve core moves to the position where the exhaust port is opened, and presses against the valve disc to close the check port. The invention discloses an air massage appliance adopting the integrated air valve of the invention, so that the volume of the massage chair is smaller, the air bag massage system is more stable, and the massage effect is better. The invention solves the problem in the prior art that the airbag massage units cannot be exhausted and pressure maintained independently when they share the intake channel, and the air pressure of each airbag massage unit does not affect each other during pressure maintenance.

The invention discloses a technical preparation apparatus for monomers of polymers. The technical preparation apparatus comprises a base; a seal box is fixedly arranged on the right side of the upperend surface of the base, and is internally provided with rotation space; a rotating motor is arranged in the rotation space; the output shaft of the rotating motor is rotatably cooperated and connected with a rotating shaft; the seal box is also internally provided with preparation space; a feeding device is arranged at the central position of the upper end surface of the seal box; a seal openingis arranged at the central position of the upper end wall of the preparation space; a liquid medicine storage cabinet is fixedly connected with the left side of the upper end surface of the base; a horizontally-oriented filter plate is arranged at the central position of the preparation space; the front side of the upper end of the filter plate is provided with a sweeping device that moves forwardand backward; the lower end of the rear end surface of the seal box is provided with a storage cabinet; and the lower side of the right end surface of the seal box is provided with a liquid outlet pipe. During the operation of the technical preparation apparatus in the invention, the structures of raw material particles for monomers are crushed during descending of the raw material particles formonomers under extrusion and pushing, so preparation of effective components in virtue of liquid medicine is facilitated and the cleaning of materials is automatically completed; and thus, labor intensity and labor cost can be reduced.

The disclosed permeameter for silicon steel magnetic performance comprises: an upper / lower yoke with one fixed and another connected with a drive motor, some coils included excitation coil and measuring coil, an excitation power, and a pressure sensor. Compared with Epstein square coil, this invention can save sample material greatly, reduces measurement error, and can bring much economic benefit.

The invention discloses a wall outlet oxygen inhalator, and the wall outlet oxygen inhalator comprises a cup, a buoy flow gauge, an upper connecting element, a connector, a filter ring, a lower connecting element, an end cover and an end cap; the upper end of the lower connecting element is matched with the lower end of the connector; the upper end of the end cover is matched with the lower end of the connector; the outer wall of the upper end of the end cap is provided with an external screw thread, and the lower end thereof is provided with a second flange extended in a radial direction; the end cap is axially provided with a blind hole, and the lower end of the blind hole is provided with an oxygen exhaust passageway; the filter ring is sleeved on the end cap; the blind hole on the end cap is connected with the upper through hole of the lower connecting element; the connector is provided with a pressure relief passageway whose outlet is provided with a pressure relief valve; the lower end of the connector is provided with an axial slot whose bottom is provided with a pressure relief passageway inlet; the slot wall on the corresponding connector is provided with an oxygen pipe port; an elastic element is arranged in the slot and provided with an axial through hole. The wall outlet oxygen inhalator has the advantages of simple structure, being convenient to process and manufacture, the pressure relief passageway is arranged on the connector such that the inhalator has the above university and can be applied to ordinary oxygen inhale or atomization inhalation.

The invention discloses an operation control method for a multi-split air conditioner. The operation control method for the multi-split air conditioner includes the following steps that when an outdoor unit is started, a compressor is controlled to operate for a first preset time period according to the initial frequency; a first pressure value of refrigerant pressure at the high-pressure side of the air conditioner is detected within the first preset time period; whether frequency increase of the compressor is needed or not is judged according to the first pressure value; and when frequency increase of the compressor is needed, the frequency of the compressor of the outdoor unit is increased, so that the refrigerant pressure at the high-pressure side of the air conditioner is increased before reversing of a four-way valve. The invention further discloses an operation control device for the multi-split air conditioner. By means of the method and device, the reliability of operation of the multi-split air conditioner is improved.

The invention provides a low-pressure early-warning protection system for a mining liquid carbon dioxide pipeline. Through adopting the low-pressure early-warning protection system for the mining liquid carbon dioxide pipeline, when the pressure in the carbon dioxide pipeline is lower than a preset pressure value, an intrinsic safety control box generates a control instruction for closing a low-temperature stop valve, the control instruction for closing the low-temperature stop valve is sent to an automatic opening and closing system, and the automatic opening and closing system controls the low-temperature stop valve to be opened or closed through a mining cable, so that real-time monitoring control over the pressure value in the carbon dioxide pipeline is achieved; and when the pressurevalue is lower than the preset pressure value, the low-temperature stop valve can be effectively used for sealing the pipeline, so that the pressure in the pipeline is kept, and the problem that the carbon dioxide pipeline cannot be used for a long time due to the fact that carbon dioxide in the pipeline is converted from a liquid state into a solid state and forms dry ice when the pressure of thepipeline is lower than 1 Mpa is avoided.

The invention discloses a sealer for sealing a grouting wellhead. The sealer comprises an upper cylinder body and a lower cylinder body, wherein the upper cylinder body and the lower cylinder body are each provided with an inner hole and are connected in a rotating mode. The inner hole of the lower cylinder body is internally transversely provided with a supporting plate with an inner hole. The supporting plate is provided with an elastic sealing body with an inner hole. The lower end of the upper cylinder body stretches into the inner hole of the lower cylinder body. The upper cylinder body is provided with a rotating handle and a side supporting pipe. A middle hole of the side supporting pipe is communicated with the inner hole of the lower cylinder body. The side supporting pipe is provided with a pressure gage and an overflow valve. By means of the sealer, the grouting wellhead can be totally sealed, concrete slurry is prevented from flowing backwards through the grouting wellhead in the pressurization grouting process, and waste of the concrete slurry is avoided; it is guaranteed that cement slurry is poured under the pressure required by the process, the packing character of the concrete slurry is improved, related seams are fully filled, and the strength of a grouting layer is improved; the overflow valve is arranged, when the pressure of the concrete slurry in the lower cylinder body exceeds the set value, the overflow valve is opened, redundant slurry is discharged, and the pressure value required by the process is maintained.

The invention discloses a buoy releasing and launching device, and particularly relates to an unmanned aerial vehicle pod type buoy releasing and launching device. The device is characterized in that an electromagnetic valve is connected with a launching cylinder fixing base through an upper cover plate, an upper cover is mounted between a first unlocking piece and the upper cover plate, a second unlocking piece and the first unlocking piece are limited through a step, and a pre-pressing spring is installed between the first unlocking piece and the second unlocking piece. When a sonar buoy needs to be launched, gas in the high-pressure gas cylinder controls on-off of the open circuit through the electromagnetic valve, so that a buoy releasing barrel is rapidly filled with the high-pressure gas in the high-pressure gas cylinder, the pressure generated by the high-pressure gas pushes the buoy and an unlocking mechanism, and buoy releasing is achieved. According to the technical scheme, a releasing executing mechanism which is lighter and cleaner is provided, and the problem that an existing high-pressure gas buoy releasing structure is complex, large, heavy, high in failure rate, uncontrollable in speed and the like is solved.

The invention discloses a water treatment method and a device for replenishing water at constant pressure. By using a controller, the pressure value in the constant pressure tank is divided into three intervals, that is, the pressure value in the constant pressure tank is below the first threshold, Between the first threshold and the second threshold and the normal value, after the second pressure gauge detects the pressure in the constant pressure tank, the controller judges that the pressure value detected by the second pressure gauge is below the first threshold, the second Between the first threshold and the second threshold or the normal value; use the water replenishment and constant pressure of the two delivery channels to ensure accurate replenishment of water into the constant pressure tank, and ensure the pressure value in the constant pressure tank at all times, so as to improve the user's confidence Satisfaction with the product.