Abstract: Disclosed is a water tank drainage volume control structure comprising: a water tank body (1), having a first water storage chamber (11) and a second water storage chamber (12), the first water storage chamber (11) being provided with a first drainage channel, and the second water storage chamber (12) being provided with a second drainage channel; a drainage valve (2), used for controlling the opening/closing of the second drainage channel, the drainage valve (2) being provided with a full-drainage switch and a half-drainage switch for controlling the opening of the second drainage channel; and a water blocking member (3), moving with respect to the water tank body (1) under the control of the full-drainage switch or the half-drainage switch so as to control switching of the first drainage channel between open and closed states. The present invention uses a drainage valve to control drainage, can also achieve half drainage and full drainage of a water tank, and is simple in structure and reliable in function.

Abstract: The present disclosure discloses an effort-saving flap-type drain valve, comprising a base with a drain port, a flapper capable of hermetically covering and connecting to the drain port, an actuator connected to the flapper, and a connecting rod rotationally connected to the base and the flapper at two ends respectively, wherein the actuator is capable of causing the flapper to rotate relative to the connecting rod, and the actuator is capable of simultaneously causing the flapper to rotate about a first rotation pivot formed at a position where the flapper is in contact with the base to initially open the drain port; and wherein the actuator is capable of causing the flapper and the connecting rod to rotate together about a second rotation pivot formed at a rotational connection between the connecting rod and the base to further open the drain port.

Abstract: The present disclosure discloses an effort-saving flap-type drain valve, comprising a base with a drain port, a flapper capable of hermetically covering and connecting to the drain port, an actuator connected to the flapper, and a connecting rod rotationally connected to the base and the flapper at two ends respectively, wherein the actuator is capable of causing the flapper to rotate relative to the connecting rod, and the actuator is capable of simultaneously causing the flapper to rotate about a first rotation pivot formed at a position where the flapper is in contact with the base to initially open the drain port; and wherein the actuator is capable of causing the flapper and the connecting rod to rotate together about a second rotation pivot formed at a rotational connection between the connecting rod and the base to further open the drain port.

Abstract: Peptide-major histocompatibility (MHC) Class II nucleic acids and proteins are provided. Methods of their use, for example in methods of identifying antigen-specific T cells and adoptive cell therapy, are also provided.

Abstract: A double-flush light-touch drain valve and double-flush control method. The valve includes a base, a buoy component and a starting component, a valve body installed on the base, the base provided with an outfall, the buoy component capable of moving relatively to the base and capable of opening or closing the outfall. The starting component includes a first starting switch and a second starting switch, and the buoy component is provided with a flowing channel communicated with the inside and outside of a buoy cavity of the buoy component; and the first starting switch is operable to drive the buoy component to rise, and close the flowing channel to implement a first flush; and the second starting switch is operable to drive the buoy component to rise, and the flowing channel is opened by the starting component, to implement a second flush.

Abstract: A double flow control mechanism of a soft touch drain valve and a double flow control method, includes a base, a float component and a starting component. The base is assembled with a valve body. The float component is has a flowing passage and can move relative to the base to open and close the drainage opening. The flowing passage connects the inside and the outside of the float chamber of the float component. The starting component controls the size of the flowing passage. The first starting switch can open a smaller flowing passage of the float component; the resultant force drains a first drainage volume of water. The second starting switch can open a larger flowing passage of the float component; the resultant force drains a second drainage volume of water.

Abstract: A dual-drainage switching mechanism of water tank has: a water container with bottom opening of the inner cavity, an air vent communicating with the inner cavity is arranged on the sealed top; a valve unit used for controlling opens or closes of the air vent; a drain valve controller comprising a partial flush button and a full flush button, and the air vent is opened through the linking and coupling of the full flush button and the valve unit, and the air vent is closed through the linking and coupling of the partial flush button and the valve unit. The dual-draining switch is achieved through hermetically storing or non-hermetically controlling part of water body in the inner cavity of the water container, traditional one-pressing drain valve can be transformed into the draining control mechanism with dual-draining function.

Abstract: A double flow control mechanism of a soft touch drain valve and a double flow control method, includes a base, a float component and a starting component. The base is assembled with a valve body. The float component is has a flowing passage and can move relative to the base to open and close the drainage opening. The flowing passage connects the inside and the outside of the float chamber of the float component. The starting component controls the size of the flowing passage. The first starting switch can open a smaller flowing passage of the float component; the resultant force drains a first drainage volume of water. The second starting switch can open a larger flowing passage of the float component; the resultant force drains a second drainage volume of water.

Abstract: A double-flush light-touch drain valve and double-flush control method. The valve includes a base, a buoy component and a starting component, a valve body installed on the base, the base provided with an outfall, the buoy component capable of moving relatively to the base and capable of opening or closing the outfall. The starting component includes a first starting switch and a second starting switch, and the buoy component is provided with a flowing channel communicated with the inside and outside of a buoy cavity of the buoy component; and the first starting switch is operable to drive the buoy component to rise, and close the flowing channel to implement a first flush; and the second starting switch is operable to drive the buoy component to rise, and the flowing channel is opened by the starting component, to implement a second flush.

Abstract: A water drain accelerating device has a base with a discharge port connected to a flush way assembled inside a water tank. An overflow hole is connected to the discharge port. An overflow pipe is plugged to the base. The bottom of the overflow pipe is connected to the overflow hole. A negative pressure pipe is connected to the overflow pipe. Negative pressure generates inside the overflow pipe when the base is draining. Water inside the water tank flows out of the discharge port when water drains. The water level inside the cavity of the negative pressure pipe falls down with the water level inside the water tank. Negative pressure generates inside the overflow pipe, so air inside the overflow pipe can't enter into the discharge port through the overflow hole. An air pipe extends from the overflow hole to the flush way.

Abstract: A dual-drainage switching mechanism of water tank has: a water container with bottom opening of the inner cavity, an air vent communicating with the inner cavity is arranged on the sealed top; a valve unit used for controlling opens or closes of the air vent; a drain valve controller comprising a partial flush button and a full flush button, and he air vent is opened through the linking and coupling of the full flush button and the valve unit, and the air vent is closed through the linking and coupling of the partial flush button and the valve unit. The dual-draining switch is achieved through hermetically storing or non-hermetically controlling part of water body in the inner cavity of the water container, traditional one-pressing drain valve can be transformed into the draining control mechanism with dual-draining function.

Abstract: An auxiliary siphon device for the toilet has: a hollow air container, which is bottom-opened, an abdicating groove in which a drain valve can be installed in is vertically disposed in the sidewall of the air container, said abdicating groove is communicated with the water tank; through holes for water flow are provided in the sidewall of the air container in the lower portion of the abdicating groove; a sealing bottom cover communicated with the bottom of the air container, and a drain valve installing hole is disposed in the sealing bottom cover corresponding to bottom of the abdicating groove; and a connecting tube, the bottom end of which is connected to the trapway of the toilet, and the top end of which is connected to the top of the inside of the air container.

Abstract: An auxiliary siphon device for the toilet has: a hollow air container, which is bottom-opened, an abdicating groove in which a drain valve can be installed in is vertically disposed in the sidewall of the air container, said abdicating groove is communicated with the water tank; through holes for water flow are provided in the sidewall of the air container in the lower portion of the abdicating groove; a sealing bottom cover communicated with the bottom of the air container, and a drain valve installing hole is disposed in the sealing bottom cover corresponding to bottom of the abdicating groove; and a connecting tube, the bottom end of which is connected to the trapway of the toilet, and the top end of which is connected to the top of the inside of the air container.