CN203051493U - Conical friction-free rotary air feeder - Google Patents

Abstract

A conical non-friction rotating air supply device, including an air bearing shaft, an air bearing sleeve and a base, the air bearing shaft is set in the air bearing sleeve, there is a small gap between the air bearing shaft and the air bearing sleeve, The mating surface of the floating sleeve is conical, the base is fixed to the bottom surface of the air floating sleeve, the microporous material layer is fixed on the inner wall of the air floating sleeve and forms an air intake high-pressure chamber with the air floating sleeve, and there is an air flotation on the air floating sleeve. The air intake hole communicates with the intake high-pressure chamber. There is an air supply inlet at the bottom of the air flotation sleeve, and the bottom of the air flotation shaft forms a high-pressure chamber with the air flotation sleeve and the base. The blind hole in the center of the shaft communicates with the air outlet on the top. There are air discharge holes on the air flotation sleeve frame. There is a circle of concave air discharge grooves, and the air discharge holes are isolated from the microporous material layer and the air inlet holes of the air flotation sleeve. The utility model can continuously supply air and is not affected by trachea disturbance.

Description

Conical Frictionless Rotary Air Supply

technical field

The utility model relates to the field of air flotation.

Background technique

With the development of science and technology, gas lubrication is often used instead of ordinary mechanical lubrication, and high-pressure gas is introduced into the gap between objects in relative motion to form a gas film, avoiding direct contact to achieve frictionless motion.

Air flotation devices have different ways of forming gas films and different gas supply methods. Usually, the gas pipe is used to introduce gas into the high-pressure chamber, but no matter which gas supply method is used, the air pipe must not disturb the air flotation device. For some Compared with the air flotation device with air source movement, there is a big problem in air flotation gas supply. For example, the side of the vertically placed folding hinges connected by hinges, the bottom uses multiple air bearing pads to realize the frictionless unfolding movement in the plane, and it is required that no external force is introduced when unfolding. If each air bearing pad is opened from the outside When the air pipe is introduced, the air floating pad moves with the hinge, and the air supply pipe will disturb the movement of the air floating pad, and there are many air supply lines, which are prone to twisting, bending, and winding, which is not easy to install and maintain; usually the air supply pipe The air cushion attached to the board is introduced from one board to another while supplying air to the board. However, when the hinge board is unfolded from the fitting state, it will be affected by disturbances such as bending and winding of the trachea at the joint, which will interfere with the unfolding of the hinge.

Contents of the invention

In order to solve the deficiency of the influence of the tracheal bending disturbance during the air supply of the existing air flotation device, the utility model provides a conical non-friction rotating air supply air flotation device which can continuously supply air and is not affected by the tracheal disturbance.

The technical scheme that the utility model solves its technical problem adopts is:

A conical non-friction rotating air supply device, comprising an air flotation shaft, an air flotation sleeve and a base. The air flotation sleeve is composed of an air flotation sleeve frame and a microporous material layer. There is a small gap between the air flotation shaft and the air flotation sleeve, the mating surface of the air flotation shaft and the air flotation sleeve is conical, the base is fixed to the bottom surface of the air flotation sleeve, and the microporous material layer is fixed on the air flotation sleeve An air intake high-pressure chamber is formed on the inner wall of the frame and between the air flotation sleeve frame. There are air flotation air intake holes on the air flotation sleeve frame and communicate with the intake high pressure chamber. There is an air supply inlet at the bottom of the air flotation sleeve frame. The bottom of the air flotation shaft forms a high-pressure chamber with the air flotation sleeve and the base, the air supply inlet communicates with the high pressure chamber, the blind hole in the center of the air flotation shaft communicates with the top air outlet, and the air flotation There are air discharge holes on the sleeve frame, and the air discharge holes are evenly distributed in the circumferential direction of the air flotation sleeve frame and communicate with the gap formed by the air flotation shaft and the air flotation sleeve. The vent hole is isolated from the microporous material layer and the air inlet hole of the air flotation sleeve.

Further, the air flotation inlet and the air supply inlet are supplied with the same gas source through the air pipe, and the top air outlet leads out the high-pressure gas through the air pipe.

The design idea of the utility model is: according to the principle of the air bearing, to realize the frictionless rotation between the air bearing and the air bearing, and then through the special air supply mode, the high-pressure gas is introduced from the air bearing and drawn out from the air shaft, so that Realize frictionless rotating air supply.

The air flotation inlet and the air supply inlet on the air flotation frame are supplied by the same high-pressure gas source, and the high-pressure gas in the high-pressure intake chamber passes through the surface of the microporous material or the throttle hole in the gap between the air flotation sleeve and the air flotation shaft. An air film is formed inside, and most of the gas in the bottom high-pressure chamber flows out from the air outlet through the center hole of the air flotation shaft, and a small part enters the gap between the air flotation sleeve and the air flotation shaft. The high-pressure gas is discharged from the air discharge hole after being damped and sealed. One end of the gap between the air flotation shaft and the air flotation sleeve is connected to the atmosphere, and the other end has an air discharge hole. Therefore, there is a pressure gradient in the gap, and part of the gas entering the gap flows out from one side of the gap. The other part is discharged through the unloading tank. The conical air flotation device is used because the conical air flotation device can resist a certain axial force and prevent the high-pressure gas in the bottom high-pressure chamber from acting on the air flotation shaft to increase additional force or cause the air flotation shaft to move.

During the process of unfolding the folded hinges from the attached state to 180° under the action of the hinges, the frictionless rotating air supply device is installed on the rotation axis when the two folded hinges are unfolded, the base, the air bearing sleeve and the One plate is fixed, and the air bearing shaft is connected to the other plate, so the high-pressure gas is transferred from one plate to the other, without being disturbed by the rotation and bending of the trachea, and the outer diameter of the frictionless rotating air supply is less than or equal to the thickness of the hinge plate. Avoid mutual interference between multiple frictionless rotating air supply devices in the pasting state.

The beneficial effect of the utility model is that the gas can be supplied continuously without being affected by the disturbance of the trachea.

Description of drawings

Figure 1 is a schematic diagram of a conical frictionless rotary air supply device.

Fig. 2 is a schematic diagram of the flow direction of the conical frictionless rotary air supply device.

Fig. 3 is a schematic diagram of the state of the folding hinges being attached.

Fig. 4 is a schematic diagram during the folding and unfolding process.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further described.

Referring to Figures 1 to 4, a conical frictionless rotating air supply device includes an air bearing shaft 2, an air bearing sleeve 3 and a base 1, and the air bearing sleeve 3 is composed of an air bearing sleeve frame and a microporous material layer 5, so that The air bearing shaft 2 is set in the air bearing sleeve 3, there is a small gap between the air bearing shaft 2 and the air bearing sleeve 3, the mating surface of the air bearing shaft 2 and the air bearing sleeve 3 is conical, and the base 1 is fixed to the bottom surface of the air flotation sleeve 3, and the microporous material layer 5 is fixed on the inner wall of the air flotation sleeve frame and forms an air intake high-pressure chamber 9 between the air flotation sleeve frame, and the air flotation inlet is provided on the air flotation sleeve frame. The air hole 7 communicates with the air intake high-pressure chamber 9, and the bottom of the air flotation sleeve frame has an air supply inlet 8, and the bottom of the air flotation shaft 2 forms a high pressure chamber 10 with the air flotation sleeve frame and the base 1. The air inlet 8 communicates with the high-pressure chamber 10, the blind hole 6 in the center of the air flotation shaft 2 communicates with the top air outlet 11, and there is an air discharge hole 4 on the air flotation sleeve frame, and the air discharge hole 4 is located in the air flotation sleeve. The circumferential direction of the frame is evenly distributed and communicates with the gap formed by the air flotation shaft 2 and the air flotation sleeve 3. There is a circle of concave air discharge grooves on the circumference where the air discharge hole 4 is located. The air discharge hole 4 is connected to the microporous material layer 5 and the air The air inlets 7 of the floating sleeve are not connected (i.e. isolated from each other). The air flotation air inlet 7 and the air supply inlet 8 use the same air source to supply air through the air pipe 13 , and the top air outlet 11 leads out the high-pressure gas through the air pipe 13 .

During the process of unfolding the folded hinge plate 18 from the bonded state to 180° under the action of the hinge 19, the frictionless rotating air supply device 20 is installed on the rotation axis when the two-page folded hinge plate 18 is unfolded, and the base 1 , The air bearing sleeve 3 is fixed with one plate, and the air bearing shaft 2 is connected with the other plate, so the high-pressure gas is transferred from one plate to the other, without being disturbed by the rotation and bending of the trachea, and the outer diameter of the frictionless rotating air supply is less than It is equal to the thickness of the hinge plate, avoiding mutual interference between multiple frictionless rotating air supply devices in the pasted state.

Claims (2)

1. A conical non-friction rotating air supply device, characterized in that it includes an air flotation shaft, an air flotation sleeve and a base, the air flotation sleeve is composed of an air flotation sleeve frame and a microporous material layer, and the air flotation shaft is sleeved on In the air flotation sleeve, there is a small gap between the air flotation shaft and the air flotation sleeve, the mating surface of the air flotation shaft and the air flotation sleeve is tapered, the base is fixed to the bottom surface of the air flotation sleeve, and the microporous material The layer is fixed on the inner wall of the air flotation sleeve and forms an air intake high-pressure chamber between the air flotation sleeve. There is an air supply inlet at the bottom. The bottom of the air flotation shaft forms a high-pressure chamber with the air flotation sleeve and the base. The air supply inlet communicates with the high-pressure chamber. In communication, there are air discharge holes on the air flotation sleeve frame, and the air discharge holes are evenly distributed in the circumferential direction of the air flotation sleeve frame and communicate with the gap formed by the air flotation shaft and the air flotation sleeve. The air discharge hole is shaped like an air discharge hole, and the air discharge hole is isolated from the microporous material layer and the air inlet hole of the air flotation sleeve. 2. The conical frictionless rotary air supply device according to claim 1, characterized in that: the air flotation air inlet and the air supply inlet are supplied by the same air source through the air pipe, and the top air outlet passes through The air tube leads the high-pressure gas out.

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