30results about How to "Increase the degree of opening" patented technology

Disclosed is a hydraulic system for controlling the degree of openness of an arm regeneration valve by driving an electronic proportional control valve during a combined operation of simultaneously operating an arm and a swing device. The hydraulic system for construction machinery according to the present invention is characterized by comprising: a hydraulic pump; a control valve for controlling the discharge flow from the hydraulic pump; an arm cylinder and a swing motor, each connected to the hydraulic pump; an arm controlling device and a swing controlling device; a pressure detecting means for the hydraulic pump; a controlled amount detecting means for the arm controlling device; a controlled amount detecting means for the swing controlling device; an arm control valve for controlling the driving of the arm cylinder; a swing control valve for controlling the driving of the swing motor; an arm regeneration valve for controlling the pressure at an upstream return passage of the arm control valve when the arm naturally descends; an electronic proportional control valve for outputting a signal voltage for switching the arm regeneration valve; and a controller for performing a control so as to generate a secondary signal voltage by outputting electrical control signals to both the control valve and the electronic proportional control valve so as to correspond to detection signals inputted from the pressure detecting means and controlled amount detecting means.

The present invention provides a connector shutter which makes it possible to reduce the space between the connector and the shutters. The connector shutters 30a and 30b are installed in the housing 38 of an electronic device so that the mating recesses 11 and 12 of the connector 1 are opened and closed by these connector shutters 30a and 30b. These connector shutters 30a and 30b are caused to pivot as a result of the tip ends of the connector shutters being contacted by the guide parts 53 of the mating connector 40, so that the mating recesses 11 and 12 of the connector 1 are opened. The pivoting shafts (shaft holes 33a and 33b) of the connector shutters 30a and 30b are disposed facing the end surfaces 16a and 16b of the connector 1 at both ends of the connector 1 with respect to the lengthwise direction, and the contact parts 34 of the tip ends of the shutters 30a and 30b that are contacted by the guide parts 53 include protruding parts 34b that protrude further than the other portions of these tip ends.

A refrigerator having a storage container adapted to be forwardly openable, a cover member installed to be movable with respect to the storage container, and adapted to open the storage container in a forwardly moved state of the storage container, and to close the storage container in a rearwardly moved state of the storage container, a plate member fixed to an inner wall of the refrigerator, and operating levers hingeably mounted on the plate member, and adapted to operatively connect the storage container and the cover member. It is possible to put food having a large size into the storage container and to remove food stored in a rear inner portion of the storage container, thereby securing the utility of the large-size storage container while providing an improved convenience in use to the user, and thus, an improved satisfaction to the user.

The invention discloses to a method for utilizing a differential-pressure polymerized temporary plugging agent to achieve temporary plugging steering fracturing. The method includes the steps of according to the formation pressure coefficient, reservoir temperature, pressure and depth of a target well reservoir, determining the type of temporary plugging steering agents first; secondly, accordingto the number of pore passages, setting the addition quantity of the temporary plugging steering agents; on the premise of already pressing cracks to open, adding the powdery differential-pressure polymerized temporary plugging agent and a granular temporary plugging agent into quick water or a guanidine gum-based liquid, using the quick water or the guanidine gum-based liquid for applying a temporary plugging liquid in place, and observing and recording the change of oil pressure in the whole process; judging the construction effect of temporary plugging steering fracturing by analyzing a fractured crack monitoring graph and the layer position and direction of a new unfolded crack. Through combined usage of the powdery differential-pressure polymerized temporary plugging agent and the granular temporary plugging agent, original cracks are effectively sealed, the pressure bearing capability of the cracks is improved, the area of crack control is enlarged, and meanwhile, through steering among clusters and steering in the cracks, the complexity of the cracks is increased. A volume fracturing effect by which main cracks and natural cracks are communicated with each other is achieved,and the purpose of increasing the yield of an oil / gas well is achieved at last.

The invention provides a steam valve and a cooking utensil. The steam valve comprises a valve body and a foam breaking component, wherein the valve body is provided with a steam chamber, and a steam inlet and a steam outlet are formed in the steam chamber; the foam breaking component is arranged in the steam chamber and provided with a foam breaking chamber; an air inlet and an air outlet communicating with the steam inlet are formed in the foam breaking chamber; and an elastic valve is arranged at the air outlet in a covering mode to open or close the air outlet. According to the steam valve, the air outlet of the foam breaking chamber is opened or closed through the elastic deformation of the elastic valve; the greater the steam pressure in the steam valve is, the greater the degree of opening of the elastic valve is, the greater the squeezing effect of the elastic valve on steam with rice and soup and the like is, so that the beneficial effects of preventing debris from clogging out of the air outlet, breaking rice soup foams, making the rice soup not easy to overflow and the like are achieved; and the elastic valve is in contact with the foam breaking component elastically in the process of opening or closing the air outlet without noise, so that the performance of the product is guaranteed.

The invention provides a control method, a control device and a cooking appliance. Wherein, the control method includes the following steps: after receiving the starting signal, controlling the cooking appliance to enter the pressure boosting stage, controlling the heating device of the cooking appliance to heat with the first preset power, and setting the energizing voltage of the coil assembly to the first preset voltage; When the temperature in the cooking utensil reaches the first preset temperature, it enters the pressure holding stage, and the heating device is controlled to heat with the second preset power for a third preset duration, and when the exhaust steam boiling instruction is executed, every first For a preset period of time, the energized voltage of the control coil assembly is increased or decreased by a preset voltage value, so that the opening degree of the exhaust valve is gradually increased. The control method provided by the present invention controls the opening degree of the exhaust valve by dynamically adjusting the energized voltage of the coil assembly after the cooking utensil enters the pressure holding stage, which effectively improves the intensity of the boiling and rolling of the food, and improves the safety of the food. Cooking texture.

The invention provides a gas cooker and a control method thereof. The gas cooker comprises a burner, a fire cover, a color sensor and a reflection piece, wherein a fire hole communicated with a gas injection channel on the burner is formed in the fire cover, so that gas is sprayed from the fire hole to form a flame; the color sensor is positioned at the bottom of the burner; an avoidance channel is arranged between the color sensor and the fire hole; a reflection surface is arranged on the reflection piece and is used for reflecting the color of the flame to the color sensor by the avoidance channel so as to detect the color of the flame; the melting point of the reflection piece is higher than the temperature of the flame generated by burning of the gas. The gas cooker provided by the invention is used for detecting the color of the flame by the matching of the color sensor and the reflection piece to detect whether the flame is put out abnormally in real time, and further a user can be reminded in time when the gas leaks, so that the occurrence of potential safety hazards is avoided; the detection speed is high, the detection is precise, and the problem that the color sensor can not resist high temperature, so that the color of the flame and the leakage of the gas can not be detected by the color sensor is overcome.

Embodiments of the present application provide a pixel driving circuit, a display device, and a pixel driving method. In the pixel driving circuit, the first to fifth terminals of the threshold voltage compensation module are respectively electrically connected to the first node, the second node, the data signal source, the third node, and the second signal source; the first to the third terminals of the driving module Terminals are respectively electrically connected to the first node, the third node and the second node; the first to third terminals of the first switch module are respectively electrically connected to the power supply, the first node and the first signal source; the first terminal of the second switch module The first to third ends of the third switch module are respectively electrically connected to the fifth signal source, the second node, and the third signal source; the fourth The first to third ends of the switch module are respectively electrically connected to the fifth signal source, the fourth node, and the fourth signal source. The embodiment of the present application can effectively compensate the threshold voltage of the driving transistor.

The invention relates to the technical field of medical devices, and discloses a device for self-regulating oxygen supply for patients in an adult ICU ward, which includes a housing, an airbag is fixedly installed inside the housing, and a horizontal plate is fixedly installed on the upper surface of the airbag. Both sides of the horizontal plate are fixedly installed with a first rack, the outer side of the first rack is meshed with a gear, the other side of the gear is meshed with a second rack, and the left side of the airbag The upper surface of the second rack is fixedly equipped with a first negative electrode, the top of the inner wall of the housing is fixedly equipped with a first positive electrode through a spring, and the lower surface of the second rack on the right side of the airbag is fixedly equipped with a second positive electrode. electrode, the inside of the shell is fixedly installed with a second negative electrode through a spring, and the right side of the airbag is fixedly connected with a first exhaust pipe. flow, and can improve the mixing effect of oxygen and other gases.

The invention discloses a piezoelectric micro-pump, comprising a piezoelectric vibrator, an upper pump body, a lower pump body and a valve plate. The piezoelectric vibrator and the upper pump body form a pump cavity; The valve cavity is formed with an inlet and outlet, and the valve plate is arranged in the valve cavity with a certain gap for free movement up and down. During the opening process of the valve plate, the first stage is the overall translation, and the second stage is the valve plate deformation. The invention not only expands the opening degree of the valve plate, but also enables the valve plate and the pump chamber pressure to have good followability, and solves the problem that the valve plate of the piezoelectric pump has a small opening degree, large flow resistance, and sticking of the valve plate in the prior art. The problem of complex process.

The invention provides a control method, a control device and a cooking utensil. The control method is used for controlling the cooking utensil; a steam exhaust valve and a coil assembly are arranged on an upper cover of the cooking utensil, and a permanent magnet is arranged on the steam exhaust valve and can be subjected to acting force of a magnetic field generated when the coil assembly is electrified. The control method includes the steps that after the cooking utensil enters a steam exhaust stage, the electrification voltage of the coil assembly is controlled to be increased or decreased by a preset voltage value every first preset duration to change the acting force, which the permanent magnet is subjected to, of the magnetic field generated when the coil assembly is electrified so that the switching-on degree of the steam exhaust valve can be increased gradually. According to the control method, the switching-on degree of the steam exhaust valve is controlled by dynamically adjusting the electrification voltage, generated after the cooking utensil enters the steam exhaust stage, of the coil assembly; besides, the pressure in the cooking utensil is gradually decreased along with the increase of the steam exhaust duration, the switching-on degree of the steam exhaust valve is controlled to be increased, and thus the effect of rapid and stable steam exhaust and pressure decrease in the cooking utensil is achieved.

The invention discloses a single-cavity axial flow type valve piezoelectric pump and a driving method. An upper cover, a middle body and a lower cover with a sealing function of a fixed piezoelectricvibrator are sequentially arranged from top to bottom; the middle body is provided with a cylindrical cavity structure and a passive stop valve; a pump cavity is positioned in the middle body, a circular piezoelectric vibrator is positioned in the cylindrical cavity, an inlet valve, connected to an inlet joint, at the lower part of the circular piezoelectric vibrator is positioned on the central axis of the cylindrical cavity, so that the axis of the inlet pipe is perpendicular to the piezoelectric vibrator to form an axial flow inlet mode; and an outlet joint is arranged on the upper cover and is connected to the pump cavity through an outlet connecting channel, and the direction of an outlet pipe is consistent with the valve opening direction. According to the single-cavity axial flow type valve piezoelectric pump, the inlet valve is arranged at the central position of the cylinder pump cavity, that is, the pressure difference change in the cavity is largest, the opening degree of the valve is increased, and the outflow capability is increased; and the outlet valve is arranged outside the cylinder pump cavity, so that the discharge of the bubbles during liquid delivery is facilitated, the axis of the inlet pipe and the axis of the outlet pipe are perpendicular to the surface of the piezoelectric vibrator, so that the energy loss in the flowing process is reduced.