39results about How to "Airtight and reliable" patented technology

A high-pressure side primary pressure chamber communicates with a secondary pressure chamber on the side of a pressure receiving device through a communication hole. A diaphragm which receives the pressure in the secondary pressure chamber is provided, and a valve body is connected to the diaphragm. The diaphragm is biased by a spring in a valve opening direction. The area S (mm2) of the pressure receiving surface of the diaphragm and the spring constant k (N / mm) of the spring are set so as to satisfy the following equations (1) and (2). P1S-k[Delta]L>C (1) P1<P2 (2) where P1 denotes the pressure (MPa or N / mm2) of the secondary pressure chamber, [Delta]L denotes the displacement (mm) of the spring, C denotes the minimum closing load (N) of the valve body, and P2 denotes the allowable maximum pressure (MPa or N / mm2) of the pressure receiving device.

This invention relates to an electromotive car carried closed switch reluctance motor including a shell, a stator, a rotor, internal and external air-cooling radiation units and a water-proof unit characterizing that the radiation unit enables the stator winding to get dual radiation of air cooling outside and inside at the same time, besides, special sealing devices are set at the end of the motor, the shaft end and the connection port to prevent water.

The invention discloses a bidirectional anti-explosion floor drain, comprising a main body with an upper opening and a lower opening, and a grate with water holes, wherein the inner side of the upper opening of the main body is provided with a plurality of radial concave parts, the outer edge of the grate is provided with a plurality of radial convex parts, and the main body is provided with a locking device for positioning the convex parts on the grate into the concave parts on the main body and then sealing the floor drain. The bidirectional anti-explosion floor drain provided by the invention is simple in structure and reliable in seal, and can prevent being penetrated by shock wave from any direction.

The invention relates to the field of crystals, in particular to a cerium-doped rare earth borate scintillating crystal and a Bridgman preparation method thereof. The chemical formula of the cerium-doped rare earth borate scintillating crystal is Li6Gd1-x-yYxCey(BO3)3, wherein the numeric range of x is from 0 to 0.9999, and the numeric range of y is from 0.0001 to 0.1. In the cerium-doped rare earth borate scintillating crystal of the invention, by partially replacing a Gd element with an element Y with approximate electronegativity and relatively smaller atomic number, the detection propertyof the gadolinium lithium borate crystal on neutrons is optimized and the raw material cost of crystal preparation is reduced. The Bridgman preparation method has the characteristics of simple processing equipment, low energy consumption, high production efficiency, low cost and the like, is convenient to operate and can realize industrial production.

A retractable writing material has a writing body retractable in a shaft tube, and has a seal cover and a seal tube portion that seal a writing portion of the writing body while interlocking with a forward / backward movement of the writing body. The seal cover and a guide tube that is fixed to the writing body are connected by plural fine line portions, and the seal cover and the fine line portions are integrally formed. The seal cover is opened and closed relative to the seal tube portion by the advance and retreat of the fine line portions. The tip of the writing portion is reliably sealed with the seal cover and seal tube portion when the writing body is in a stored position, so that the writing body is prevented from drying.

A filter housing is provided to mount a filter cartridge on an inner part of a container body in a easy and stable manner. A filter housing comprises a container body(1) and a head(2). The container body is used in a state that a cylindrical filter cartridge is longitudinally inserted into the container body. The upper end of the container body is opened. The head functions as a cover of the container body. The head includes two flow paths for introducing and discharging liquid to be treated. The container body and head are sealed by a pair of toggle clamps(4) in a state that a ring-shaped member(3) is interposed between the container body and head. Supporting part of the toggle clamps are diagonally positioned on an upper outer surface of the container body. Hooks(7) and handle levers(10) are vertically mounted on the supporting parts such that the hooks are positioned on upper portions of the supporting parts and handle levers are positioned on lower portions of the supporting parts. A guide unit(5) is installed between the container body and ring-shaped member to position the container body and head on the same axial line.

The invention provides a temperature equalizing system for an autoclave. The temperature equalizing system comprises a fan and a motor; the fan is arranged inside a tank body of the autoclave; the motor is arranged outside the tank body; the motor is provided with a first magnetic body; the fan is provided with a second magnetic body matched with the first magnetic body, and the first magnetic body and the second magnetic body are arranged to enable the motor to drive the fan through the magnetic force between the first magnetic body and the second magnetic body. The invention also provides a temperature equalizing method for the autoclave. According to the temperature equalizing system and method for the autoclave disclosed by the invention, transmission from the motor to the fan is achieved by the magnetic force, thereby reliably sealing the autoclave in the temperature equalizing operation of the autoclave without a sealing material.

The present invention relates to a channel switching valve. The flow path switching valve (10) of the present invention utilizes two pistons (2, 2) to divide the valve casing (1) into a main valve chamber (11A) and auxiliary valve chambers (12A, 12A) on both sides thereof, through The decompression of one auxiliary valve chamber (12A) utilizes the differential pressure with the refrigerant pressure in the main valve chamber (11A), so that the piston (2) and the main valve core (5) move to convert the refrigerant in the refrigeration cycle. The flow channel, after the piston (2) moves, enables the main valve chamber (11A) and the auxiliary valve chamber (12A) to quickly achieve pressure equalization, ensuring the durability of the piston (2). A pressure-equalizing channel is arranged in the center of the piston (2), and a secondary valve (25) is arranged in the pressure-equalizing channel. When the piston (2) moves to the cover part (12) side, the opening of the exhaust passage (12a) of the auxiliary valve seat part (122) is blocked by the auxiliary valve (25), and the pressure equalization passage is conducted.

The invention discloses an automatic locking pipe connection mechanism, which comprises a first connecting head, a second connecting head, several elastic clamping bodies, a pressure tightening mechanism, a boosting mechanism, a first contact switch, several fixing protrusions, a ring Shaped flexible gasket and microcontroller, the front end of the first connector is provided with evenly distributed elastic clamping body, the elastic clamping body is arranged inclined outward, and the inner side of the elastic clamping body is provided with a rear end The ring-shaped flexible gasket is sealingly connected with the first connecting head, and the inside of the front end of the elastic clamping body is provided with fixing protrusions, and the pressure tightening mechanism is fixedly sleeved on all the elastic clamping bodies. The pressurizing mechanism is connected with the pressure tightening mechanism, and compared with the prior art, it is flexible and applicable, airtight and reliable, stable and durable.

The invention discloses a pneumatic push roller shutter water volume adjusting mechanism. The pneumatic push roller shutter water volume adjusting mechanism comprises a sleeve, a water blocking mechanism and an air adjusting mechanism. The sleeve is a pipe body with the circular exterior and the square interior, the water blocking mechanism is arranged in a sleeve, and the air adjusting mechanismwhich is connected with the water blocking mechanism is arranged on the upper wall body of the sleeve. The water blocking mechanism comprises two limiting supports, an air pipe mechanism, a pluralityof reinforcing bodies, two supporting protrusions, a water blocking membrane and a stretching type roller shutter strip. The air pipe mechanism comprises a vertical air pipe and two transverse air pipes, wherein the two transverse air pipes are formed on the vertical air pipe in an integrated mode. One transverse air pipe is located at the lower end of the vertical air pipe, and the stretching type roller shutter strip is arranged on the inner wall of the vertical air pipe. Compared with the prior art, the pneumatic push roller shutter water volume adjusting mechanism has the advantages that the applicability can be high, operation is easy, natural materials are adopted to produce the pneumatic push roller shutter water volume adjusting mechanism, the adjustment wear is little, sealing isreliable, the requirement for continuous and effective adjustment of the volume of water flowing out of a water diversion plug is met, and a certain health care effect is achieved.

This spout cap is a spout cap for sealing the mouth of the spout body, and includes a cylindrical body made of resin and a sealing film joined to the body, and the sealing film has a function of sealing the mouth. A heat bonding layer that can be bonded to the front end surface of the mouth.

This discharging plug comprises a vertical cylindrical housing having, in its side face, an inlet connected to the outlet of a container and the circular outlet at its lower end, a valve element having a cylindrical valve part in surface contact with the inner peripheral surface of the outlet, and an operating means installed on the upper part of the housing and opening / closing the outlet by moving the valve element in the housing. On all the periphery of either of the outer peripheral surface of the valve part and the inner peripheral surface of the outflow, a projected ring in contact with the other surface thereof facing that surface is formed, and the height of the projected ring is brought into such a range that can hold the surface contact of the outer peripheral surface of the valve part with the inner peripheral surface of the outlet. Thus, the discharging plug capable of preventing the fluid from leaking by sealing the outlet and lightly operable can be provided.

The invention relaters to an ultrasonic bathtub, comprising a bathtub body and an air channel, wherein the air channel comprises an air inlet pipe and a distributed air discharge net communicated with the air inlet pipe; the distributed air discharge net is arranged on the bathtub body, is positioned under a bathing liquid level, and comprises a plurality of distributed air discharge holes which are arranged on the bathtub body and communicate the inner side of the bathtub body with an air inlet space of the distributed air discharge net; and the position on the side wall in the bathtub body, which corresponds to the back of a bather who adopts a seating and leaning posture, comprises pressure-resistant lug bosses which are arranged at intervals. According to the ultrasonic bathtub, the massage effect of the ultrasonic wave to the back of the bather is greatly improved, the structure of the air channel is simplified, and the manufacturing cost and the installation and maintenance cost are lowered; the inner sleeves of the bathtub are reliably installed and connected, and are convenient to disassemble and collect; and the ultrasonic bathtub has important meanings for improving the batching health security and avoiding the transmission of AIDS (acquired immune deficiency syndrome) and skin diseases.