10results about How to "Reduce high pressure" patented technology

The present invention provides a rotary valve core type pulse valve for a smart toilet, the rotary valve core type pulse valve comprising a pulse housing and a pulse valve core. In the rotary valve core type pulse valve for a smart toilet of the present invention, when the pulse valve core rotates relative to the pulse housing, the block of the pulse valve core switches between a blocking state and a non-blocking state, and the pulse inlet and the pulse outlet are alternately in a semi-open state and a fully open state, so that the flow area of ​​the water flow channel is periodically reduced or increased, so that the pressure of the flushing water flowing out of the rotary valve core type pulse valve is alternately increased or decreased, so that the user can obtain a gradual sense of pressure and impact when using it, so as to achieve the comfort of massage and enhance the user's experience.

The invention belongs to the technical field of polymer foam materials, and particularly relates to an environment-friendly low-smoke flame-retardant PVC (polyvinyl chloride) foam board and a preparation method thereof. The foamed sheet is prepared from the following raw materials: PVC resin powder, a special modified synergistic flame retardant for PVC, a filler, a foaming regulator, a calcium-zinc stabilizer, polyethylene wax, oxidized polyethylene wax and epoxidized soybean oil, wherein the special modified synergistic flame retardant for PVC is a synergistic flame retardant prepared from DPO modified magnesium-aluminum hydrotalcite. A supercritical carbon dioxide twin-screw extrusion foaming device is adopted for preparation, a PVC special modified synergistic flame retardant is added into the raw materials, the hydrotalcite surface contains a long alkane chain, the interaction among the fillers is weakened, good dispersion in PVC can be realized, free radicals generated during combustion can be quenched, a combustion chain reaction can be terminated, and the flame retardant has a good flame retardant effect. Phosphoric acid substances decomposed by heating can promote the polymer base material to be dehydrated into carbon and insulate heat and oxygen. The prepared board can promote flame-retardant and smoke-suppression effects and is excellent in mechanical property.

The invention relates to the technical field of vehicle control, and provides a compressor control method and device, electronic equipment and a storage medium. The method comprises the steps that the high-pressure pressure of a compressor is obtained, and the high-pressure pressure of the compressor is the pressure of a high-pressure exhaust side refrigerant of the compressor; under the condition that the high pressure of the compressor is larger than a preset high-pressure threshold value, adjusting parameters of the compressor are obtained; the target high pressure reduction strategy is determined according to the adjusting parameters, and the compressor is controlled according to the target high pressure reduction strategy so as to reduce the high pressure of the compressor, the target high pressure reduction strategy is obtained under the condition that the high pressure of the compressor is larger than the preset high pressure threshold value, and the purpose of reducing the high pressure of the compressor when the compressor has the shutdown risk is achieved. The target high pressure reduction strategy is obtained in time, the compressor is controlled, the high pressure of the compressor is reduced, normal operation of the compressor is guaranteed, and the problem that the compressor of the heat pump air conditioner is too high in high pressure, and consequently the air conditioner cannot refrigerate is solved.

The invention relates to the technical field of biological medicine, and discloses PROTAC capable of degrading PRRX2 protein in cells and application of the PROTAC, and the PROTAC is formed by connecting a target protein ligand and an E3 ubiquitin ligase ligand through an azide-alkyne cycloaddition reaction; the structure of the target protein ligand is as shown in a formula 1: # imgabs0 #. The chimera for targeting protein hydrolysis can be specifically recognized with a PRRX2 transcription factor, so that the pulmonary arterial hypertension is reduced.

The utility model discloses an air check valve for a pressure tank of a speed regulator, which comprises a check valve body, a gulp valve body is arranged at the top end of the check valve body, studs are arranged at the edge of the surface of the gulp valve body at equal intervals, and a first nut is arranged at one end, far away from the gulp valve body, of each stud. Second gaskets are arranged at the contact positions of the studs and the gulp valve body, a deflation valve body is arranged on the outer wall of one side of the gulp valve body, a first valve rod is arranged in the deflation valve body, and one end of the first valve rod extends out of the deflation valve body and is provided with a first hand wheel; a second nut is installed on the outer wall of the first valve rod on the side, away from the deflation valve body, of the first hand wheel, and a threaded sleeve is arranged on the surface of the gulp valve body. According to the air check valve, potential safety hazards existing in the air check valve are eliminated, the safety of the air check valve in use is improved, the sealing performance of the air check valve in use is improved, the overall firmness of the air check valve is guaranteed, and the convenience of the air check valve in maintenance is improved.

The present invention provides a sildenafil citrate orodisintegrating tablet and a preparation method thereof, and belongs to the field of medical technology. Icariin, tribulus saponin and sildenafil citrate are mixed to prepare liposomes, added to a hydrogel prepared from modified maltodextrin and earthworm protein, mixed evenly, dried, ground to obtain a mixed powder, added to an auxiliary material, and tableted to obtain a sildenafil citrate orodisintegrating tablet. The sildenafil citrate orodisintegrating tablet prepared by the present invention adopts a direct tableting method, has a simple preparation method, does not require coating, has good palatability, good stability, good therapeutic effect, has a good sustained-release effect, prolongs the drug effect time, improves the patient's compliance, and has broad application prospects.

The application discloses a kind of control method, device and multiple connection air conditioners of multiple connection air conditioner, it is related to air conditioning technical field, the control method of the multiple connection air conditioner includes: detecting the load reduction of the indoor unit of multiple connection air conditioner, when the load reduction of indoor unit exceeds preset threshold, the number of the outdoor unit of start-up is detected;When the number of the outdoor unit of start-up is reduced to preset number, the high pressure of the outdoor unit of start-up is monitored, and recorded as first high pressure, the high pressure of the outdoor unit of shutdown is monitored, and recorded as second high pressure;When first high pressure is greater than second high pressure, based on the operating mode of multiple connection air conditioner, first high pressure and second high pressure control the expansion valve of the outdoor unit of shutdown or the expansion valve of the indoor unit of shutdown is opened, to reduce the high pressure of the outdoor unit of start-up.The application can make the refrigerant flow direction of the outdoor unit of start-up side low pressure side when the high pressure of the outdoor unit of start-up is higher, reduce the high pressure of the outdoor unit of start-up side, reduce high pressure protection risk.

The invention discloses a heat pump air conditioning system which comprises a compressor and a heat pump, the four-way reversing valve is connected with the compressor and is configured to change the flow direction of a refrigerant; the indoor heat exchanger is connected with the four-way reversing valve; the outdoor heat exchanger is connected with the four-way reversing valve; the refrigerant storer is configured to store a refrigerant flowing through the refrigerant storer; the first pipeline is configured to connect the outdoor heat exchanger and the indoor heat exchanger; the branch pipeline is configured to be connected with the refrigerant storage and the first pipeline to form a refrigerant flow path; the adjustable on-off device is arranged on the first pipeline, and the adjustable on-off device is configured to adjust the flow of the refrigerant flowing through the refrigerant storage so as to adjust the refrigerant circulation amount in the air conditioning system. According to the air conditioning system, dynamic adjustment of the refrigerant circulation amount can be achieved, so that the requirements of the air conditioning system for the refrigerant amount under different working conditions are met.

This utility model discloses a system for mitigating the pressure rise in a storage tank during the unloading of cryogenic liquid ammonia. The system includes a cryogenic liquid ammonia tank, an unloading pipeline, and a tank group boundary ball valve. One end of the unloading pipeline is connected to a liquid ammonia unloading tanker, which has a built-in temperature detection unit. The other end of the unloading pipeline is connected to the interior of the cryogenic liquid ammonia tank, which includes an outer tank and an inner tank. The tank group boundary ball valve is installed on the unloading pipeline, and one end of the valve is connected in parallel to a first unloading branch pipe and a second unloading branch pipe. A regulating valve is installed on the first unloading branch pipe, which is connected to a lower inlet pipe extending from the inner tank via a flange. The outlet end of the lower inlet pipe is close to the bottom of the inner tank. This system for mitigating the pressure rise in a storage tank during the unloading of cryogenic liquid ammonia utilizes different inlet methods to slow down the pressure rise inside the tank, significantly improving unloading efficiency.

The utility model discloses a roll-in control system of a cut tobacco making machine. The roll-in control system comprises a base, an upper roll shaft, a lower roll shaft, a fixing assembly, a compression assembly and an adjusting assembly. The compression assembly is arranged at the top end of the first supporting frame and penetrates through the first supporting frame to be connected with the upper roller shaft. The adjusting assembly comprises a shaft seat, an adjusting shaft rod, first wedge-shaped sliding blocks and second wedge-shaped sliding blocks, the shaft seat is fixed to the base, the adjusting shaft rod penetrates through the shaft seat, the first wedge-shaped sliding blocks are arranged at the two ends of the adjusting shaft rod respectively and rotationally arranged with the adjusting shaft rod, and the first end of each second wedge-shaped sliding block abuts against the corresponding first wedge-shaped sliding block; the second end of the second wedge-shaped sliding block is connected with the two ends of the lower roller shaft. The adjusting assembly drives the upper roll shaft and the lower roll shaft to move downwards or upwards so as to stretch or press the compression assembly, so that the pressure between the upper roll shaft and the lower roll shaft is reduced or increased, the stable operation of the upper roll shaft and the lower roll shaft is ensured, and the production efficiency and the product quality are improved.