CN212360907U

CN212360907U - Rotary air valve

Info

Publication number: CN212360907U
Application number: CN202020761044.7U
Authority: CN
Inventors: 胡海波; 张永贵
Original assignee: Ningbo Albert Novosino Co Ltd
Current assignee: Ningbo Luofu Medical Technology Co.,Ltd.
Priority date: 2020-05-09
Filing date: 2020-05-09
Publication date: 2021-01-15
Anticipated expiration: 2030-05-09

Abstract

The utility model relates to a rotary air valve, including three-way pipe and rotary valve, the three-way pipe includes intake pipe, outlet duct, gas release pipe and transition chamber, and the transition chamber communicates with intake pipe, outlet duct, gas release pipe respectively, rotary valve control the switching of gas release pipe, the joint has one-way air plug in the intake pipe, one-way air plug is the one end confined cavity tubulose, one-way air plug well kenozooecium and is the air channel, and the one-way air plug outer wall is close to the radial outside protruding joint portion that forms in position of air channel notch, joint portion with intake pipe inner wall joint, one-way air plug lateral wall open have with the air gap of air channel intercommunication. Has the advantages of simple structure and convenient assembly.

Description

Rotary air valve

Technical Field

The utility model belongs to the technical field of gas valve body technique and specifically relates to a rotatory pneumatic valve is related to.

Background

At present, the one-way gas valve is a common gas valve body.

In the prior art, the invention patent with publication number CN102579027B discloses a button type rapid exhaust one-way air valve, which comprises a valve body, an exhaust valve core, an exhaust button, a one-way valve core and a plug. The invention adopts the technical scheme that an air outlet and an air inlet are respectively arranged at the left end and the right end of a valve body, the air outlet is arranged at the upper part of the valve body, a pressing exhaust mechanism consisting of an exhaust valve core, an exhaust button, a return spring and an A sealing ring is arranged in the air outlet, a one-way non-return air inlet mechanism consisting of a one-way valve core, a spring, a ventilation retainer ring and a B sealing ring is arranged in the air inlet, and compressed air enters a cuff from the air inlet through the valve body in a one-way through; when exhausting, the technical scheme that the exhaust button is pressed to drive the exhaust valve core to be downward to enable the air outlet to be communicated with the atmosphere, and air in the cuff is exhausted from the air outlet through the air outlet is adopted, and the aim of simple and convenient operation is fulfilled by using the manner of pressing to exhaust the air to inflate and deflate the cuff of the sphygmomanometer.

However, the one-way air valve needs to be provided with a spring to control the movement of the one-way valve core, the structure still has a simplified space, and the assembly mode can be simplified.

SUMMERY OF THE UTILITY MODEL

To the not enough of prior art existence, one of the purposes of the utility model is to provide a rotatory pneumatic valve, have simple structure, convenient assembling's advantage.

The utility model provides a rotary air valve, includes three-way pipe and rotary valve, and the three-way pipe includes intake pipe, outlet duct, gas release pipe and transition chamber, and the transition chamber communicates with intake pipe, outlet duct, gas release pipe respectively, and rotary valve control the switching of gas release pipe, the joint has one-way air plug in the intake pipe, one-way air plug is one end confined cavity tubulose, one-way air plug well kenozooecium and is the air channel, and the radial outside arch in position that one-way air plug outer wall is close to the air channel notch forms joint portion, joint portion with intake pipe inner wall joint, one-way air plug lateral wall open have with the air gap of air channel intercommunication.

By adopting the technical scheme, the one-way air plug is in a hollow tubular shape, the air gap is formed in the side wall of the one-way air plug, when air flows into the vent groove from the notch side of the one-way air plug vent groove, the air is squeezed to open the air gap to ventilate in the inner vent groove under the increased pressure, and when the air flows to the one-way air plug from the closed end of the one-way air plug, the air is compressed by the increased pressure of the air to the one-way air plug, so that the air gap is closed and is not.

Further, the gas release pipe includes the gas release hole that the axial was seted up, the gas release pipe lateral wall open have with the air vent of gas release hole intercommunication, the rotary valve includes lid and stifled gas post, the lid is connected to stifled gas post axial one end, stifled gas post with the gas release hole is pegged graft, stifled gas post has stifled gas position in the air vent, and when stifled gas post was located stifled gas position, stifled gas post lateral wall was sealed the opening of air vent and gas release hole intercommunication.

Through adopting above-mentioned technical scheme, when stifled gas post left stifled gas position, the air vent was ventilated with the transition chamber intercommunication.

Further, the lid includes bottom plate and circular surrounding edge, stifled gas column axial one end is connected in the bottom plate axle center, circular surrounding edge inner wall is equipped with the internal thread, the gas release pipe outer wall be equipped with interior screw-thread fit's external screw thread.

Through adopting above-mentioned technical scheme, the lid is rotatory on the gas release pipe, makes stifled gas post remove in the gas release hole.

Further, the radial inward bulge of circular surrounding edge tip inner wall forms annular interior knot, bleed pipe outer wall circumference is equipped with annular retaining ring, works as when the internal thread has the trend that breaks away from the external screw thread, detains the roof in annular retaining ring diapire butt annular.

Through adopting above-mentioned technical scheme, the cooperation of detaining in annular retaining ring and the annular prevents that the lid breaks away from the gas release pipe.

Furthermore, the air bleed hole comprises a straight hole part and a taper hole part which are axially communicated, the aperture of the taper hole part is reduced from the direction close to the straight hole part to the direction far away from the straight hole part, the end part of the air blocking column is a taper column part matched with the taper hole part, and the vent hole is positioned at the communication position of the straight hole part and the taper hole part.

By adopting the technical scheme, the taper hole part and the taper column part have certain taper, and micro-interference sealing can be realized.

Furthermore, a first step groove is formed in the communication position of the taper hole part and the vent hole, and a second step groove is formed in the taper pillar part.

Through adopting above-mentioned technical scheme, when stifled gas post removed from pulling out the gassing hole direction, stifled gas post cancellation was to the closure of air vent, and the clearance between first step and the second step has increased the gassing clearance.

Further, the vent groove notch of the one-way air plug is communicated with the pipe orifice of the air inlet pipe.

Through adopting above-mentioned technical scheme, gaseous can follow the intake pipe and get into the transition chamber through one-way gas plug, but can not follow the transition chamber and pass through the reverse outflow intake pipe of one-way gas plug. When the air inlet pipe is inflated, the air inlet pipe can only inlet air but cannot vent air.

Furthermore, the inner wall of the air inlet pipe is provided with an annular positioning clamping groove, and the clamping portion is clamped with the annular positioning clamping groove.

Through adopting above-mentioned technical scheme, annular positioning slot and joint portion cooperation are fixed with one-way air plug and a certain position of intake pipe.

Furthermore, the one end butt that one-way air plug was equipped with the air channel notch has the opening jump ring, opening jump ring side butt annular positioning clamping groove inner wall edge.

Through adopting above-mentioned technical scheme, the opening jump ring is equipped with the butt of vent groove notch one side at annular positioning slot edge with one-way air plug, prevents that one-way air plug from being removed by the great gas extrusion of transition intracavity pressure.

Further, the vent groove notch of the one-way air plug is communicated with the transition cavity.

Through adopting above-mentioned technical scheme, gaseous can be followed the transition chamber and flowed out the intake pipe through one-way gas plug, but can not get into the transition chamber through one-way gas plug from the intake pipe.

To sum up, the utility model discloses a following at least one useful technological effect:

because the one-way air plug is in a hollow tubular shape, the air gap is arranged on the side wall of the one-way air plug, when air flows into the vent groove from the notch side of the vent groove of the one-way air plug, the pressure of the air in the inner vent groove is increased to extrude the air gap for ventilation, and when the air flows to the one-way air plug from the closed end of the one-way air plug, the pressure of the air on the one-way air plug is increased to compress the air gap, so that the air gap is closed and.

Drawings

FIG. 1 is a schematic external structural view of the first embodiment;

FIG. 2 is a cross-sectional view of the first embodiment;

FIG. 3 is an enlarged view of portion A of FIG. 2;

FIG. 4 is an enlarged view of portion B of FIG. 2;

FIG. 5 is a schematic diagram of an inflated state of the embodiment;

FIG. 6 is a schematic view of a deflated state of the embodiment;

FIG. 7 is a sectional view of the second embodiment;

FIG. 8 is a schematic diagram of a second pumping state of the embodiment;

FIG. 9 is a schematic diagram of the second embodiment in a return state.

In the figure, 1, an air inlet pipe; 11. an annular positioning clamping groove; 2. an air outlet pipe; 3. discharging the air pipe; 31. air bleeding holes; 311. a straight hole portion; 312. a taper hole portion; 313. a first step groove; 32. a vent hole; 33. an external thread; 34. an annular retainer ring; 4. a transition chamber; 5. rotating the valve; 51. a cover body; 511. a base plate; 512. a circular surrounding edge; 513. an internal thread; 514. an annular inner buckle; 352. plugging a gas column; 53. a tapered column portion; 54. a second step groove; 6. a one-way air plug; 61. a clamping part; 62. an air gap; 7. and (4) opening the clamp spring.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The first embodiment is as follows:

referring to fig. 1, for the utility model discloses a rotary air valve, including three-way pipe and rotary valve 5, the three-way pipe includes intake pipe 1, outlet duct 2, gas bleed 3 and transitional cavity 4, and transitional cavity 4 communicates with intake pipe 1, outlet duct 2, gas bleed 3 respectively.

Referring to fig. 2, a one-way air plug 6 is mounted and clamped in the air inlet pipe 1, the one-way air plug 6 is in a hollow tubular shape with one closed end, the hollow part of the one-way air plug 6 is a vent groove, and the notch of the vent groove faces the pipe orifice of the air inlet pipe 1.

Install one-way air plug 6 in the intake pipe 1, the radial outside protruding joint portion 61 that forms in position that 6 outer walls of one-way air plug are close to the air channel notch, joint portion 61 with 1 inner wall joint of intake pipe. In the embodiment of the present invention, the unidirectional air lock 6 is made of rubber. With reference to fig. 2 and 3, an annular positioning slot 11 is formed in the inner wall of the air inlet pipe 1, and the clamping portion 61 is clamped with the annular positioning slot 11. One end of the one-way air plug 6, which is provided with a vent groove notch, is abutted with an opening clamp spring 7, and the side surface of the opening clamp spring 7 is abutted with the edge of the inner wall of the annular positioning clamping groove 11. The opening clamp spring 7 abuts against one side, provided with a vent groove opening, of the one-way air plug 6 at the edge of the annular positioning clamp groove 11, and the one-way air plug 6 is prevented from being extruded and moved by air with high pressure in the transition cavity 4.

Referring to fig. 2, the air bleed tube 3 includes an air bleed hole 31 opened in the axial direction, and a vent hole 32 communicated with the air bleed hole 31 is opened in a side wall of the air bleed tube 3. The rotary valve 5 comprises a cover body 51 and a gas blocking column 352, the cover body 51 comprises a bottom plate 511 and a circular surrounding edge 512, the axial end of the gas blocking column 352 is connected with the axis of the bottom plate 511, an internal thread 513 is arranged on the inner wall of the circular surrounding edge 512, and an external thread 33 matched with the internal thread 513 is arranged on the outer wall of the gas release pipe 3. The bottom plate 511 is circular, and a cylindrical air blocking column 352 is axially connected to the axial center of the bottom plate 511. The gas blocking column 352 is inserted into the gas release hole 31, the gas blocking column 352 has a gas blocking position in the gas release hole 31, when the gas blocking column 352 is located at the gas blocking position, the side wall of the gas blocking column 352 seals the opening of the vent hole 32 communicated with the gas release hole 31, when the vent hole 32 needs to be ventilated with the transition cavity 4, the cover body 51 is rotated to enable the gas blocking column 352 to move towards the direction of pulling out the gas release hole 31, and the gas blocking column 352 is contacted with the vent hole 32 to seal, so that ventilation of the vent hole 32 and the transition cavity 4 is achieved.

The air bleed hole 31 comprises a straight hole part 311 and a taper hole part 312 which are axially communicated, the diameter of the taper hole part 312 is reduced from the direction close to the straight hole part 311 to the direction far away from the straight hole part 311, the end part of the air blocking column 352 is a taper column part 53 matched with the taper hole part 312, and the vent hole 32 is positioned at the communication part of the straight hole part 311 and the taper hole part 312. The taper portion 312 and the taper portion 53 have a certain taper to realize a micro interference seal. The tapered hole portion 312 is provided with a first step groove 313 at a position communicating with the vent hole 32, and the tapered column portion 53 is provided with a second step groove 54. When the air blocking column 352 moves from the direction of pulling out the air release hole 31, the air blocking column 352 cancels the closing of the vent hole 32, and the gap between the first step and the second step increases the air release gap.

Referring to fig. 4, in order to prevent the cover body 51 from being separated from the gas discharge tube 3, the inner wall of the end portion of the circular surrounding edge 512 protrudes radially inward to form an annular inner buckle 514, the outer wall of the gas discharge tube 3 is circumferentially provided with an annular retaining ring 34, when the internal thread 513 has a tendency to be separated from the external thread 33, the bottom wall of the annular retaining ring 34 abuts against the top wall of the annular inner buckle 514, the external thread 33 and the internal thread 513 are always kept in a matched state, and the internal thread 513 cannot be separated from the external thread.

The tapered hole portion 312 is provided with a first step groove 313 at a position communicating with the vent hole 32, and the tapered column portion 53 is provided with a second step groove 54. When the air blocking column 352 moves from the direction of pulling out the air release hole 31, the air blocking column 352 cancels the closing of the vent hole 32, and the gap between the first step and the second step increases the air release gap.

The implementation principle of the first embodiment is as follows: referring to fig. 5, when the rotary valve 5 is in the gas blocking position, the gas inlet pipe 1 is connected with the gas charging device, and the gas outlet pipe 2 is connected with the object to be charged, the gas charging device charges the gas inlet pipe 1, and the gas flows out of the gas outlet pipe 2 after rushing open the air gap 62 of the one-way gas plug 6 from the gas inlet pipe 1 to charge the object to be charged; after the inflation device stops inflating, the gas pressure in the inflated object increases and tends to flow back to the inflation device through the one-way gas plug 6, but the gas cannot flow back to the inflation device because the air gap 62 of the one-way gas plug 6 is pressed and closed by the gas on the side of the transition cavity 4; referring to fig. 6, when the inflated object needs to be deflated, the rotary valve 5 is unscrewed to release the blocking column 352 from the vent hole 32, and the gas in the inflated object flows out from the vent hole 32. The direction of the arrows in fig. 5 and 6 indicates the gas flow direction.

Example two:

referring to fig. 7, a rotary air valve, the second embodiment is different from the first embodiment in that the unidirectional air plug 6 in the first embodiment is reversely arranged, namely, the vent groove notch of the unidirectional air plug 6 is communicated with the transition cavity 4. The one-way air plug 6 is in interference fit with the inner wall of the air inlet pipe 1 through the clamping part 61.

The second embodiment is implemented according to the following principle: referring to fig. 8, when the rotary valve 5 is in the gas blocking position, and the gas inlet pipe 1 is connected with the gas extraction device and the gas outlet pipe 2 to receive the object to be extracted, the gas extraction device extracts gas from the gas inlet pipe 1, and the gas is extracted from the object to be extracted to flush the air gap 62 of the one-way gas plug 6 and then flows out of the gas inlet pipe 1; after the air extracting device stops extracting air, the air pressure of the air in the object to be extracted is reduced, and the air at the end of the air inlet pipe 1 tends to be extracted back into the object to be extracted through the one-way air plug 6, but because the air gap 62 of the one-way air plug 6 is extruded and sealed by the air at the side of the air inlet pipe 1, the air cannot be extracted into the object to be extracted from the air inlet pipe 1; referring to fig. 9, when the compressed object to be pumped needs to be returned, the rotary valve 5 is unscrewed to release the blocking column 352 from the vent hole 32, and the gas flows into the object to be pumped from the vent hole 32. The direction of the arrows in fig. 8 and 9 indicates the gas flow direction.

The rotary valves 5 of the first embodiment and the second embodiment can realize one-way ventilation through one-way air plug 6, and the rotary valve is simple in structure and more convenient to assemble.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a rotary air valve, includes three-way pipe and rotary valve (5), and the three-way pipe includes intake pipe (1), outlet duct (2), gas release pipe (3) and transition chamber (4), and transition chamber (4) communicate with intake pipe (1), outlet duct (2), gas release pipe (3) respectively, and rotary valve (5) control the switching of gas release pipe (3), its characterized in that: the joint has one-way air plug (6) in intake pipe (1), one-way air plug (6) are one end confined cavity tubulose, one-way air plug (6) well kenozooecium and are the air channel, and one-way air plug (6) outer wall is close to the radial outside protruding joint portion (61) that forms in position of air channel notch, joint portion (61) with intake pipe (1) inner wall joint, one-way air plug (6) lateral wall open have with air gap (62) of air channel intercommunication.

2. A rotary gas valve according to claim 1, characterized in that: bleed pipe (3) include the bleeder vent (31) that the axial was seted up, bleed pipe (3) lateral wall open have with air vent (32) of bleed vent (31) intercommunication, rotary valve (5) are including lid (51) and stifled gas post (352), lid (51) are connected to stifled gas post (352) axial one end, stifled gas post (352) with bleed vent (31) are pegged graft, stifled gas post (352) have stifled gas position in bleed vent (31), and when stifled gas post (352) were located stifled gas position, stifled gas post (352) lateral wall was sealed the opening of air vent (32) and bleed vent (31) intercommunication.

3. A rotary gas valve according to claim 2, characterized in that: lid (51) are including bottom plate (511) and circular surrounding edge (512), bottom plate (511) axle center connects stifled gas column (352) axial one end, circular surrounding edge (512) inner wall is equipped with internal thread (513), bleed pipe (3) outer wall be equipped with internal thread (513) complex external screw thread (33).

4. A rotary gas valve according to claim 3, characterized in that: circular surrounding edge (512) tip inner wall is radially inwards protruding to form and is detained (514) in the annular, bleed pipe (3) outer wall circumference is equipped with annular retaining ring (34), works as internal thread (513) have the trend that breaks away from external screw thread (33), detain (514) roof in the annular is detained in the butt of annular retaining ring (34) diapire.

5. A rotary gas valve according to claim 2, characterized in that: the air release hole (31) comprises a straight hole part (311) and a taper hole part (312) which are axially communicated, the hole diameter of the taper hole part (312) is reduced from the direction close to the straight hole part (311) to the direction far away from the straight hole part (311), the end part of the air blocking column (352) is a taper column part (53) matched with the taper hole part (312), and the vent hole (32) is positioned at the communication position of the straight hole part (311) and the taper hole part (312).

6. A rotary gas valve according to claim 5, characterized in that: the taper hole part (312) is provided with a first step groove (313) at the communication position of the vent hole (32), and the taper pillar part (53) is provided with a second step groove (54).

7. A rotary gas valve according to claim 1, characterized in that: and the notch of the vent groove of the one-way air plug (6) is communicated with the pipe opening of the air inlet pipe (1).

8. A rotary gas valve according to claim 7, characterized in that: intake pipe (1) inner wall is equipped with annular positioning slot (11), joint portion (61) with annular positioning slot (11) joint.

9. A rotary gas valve according to claim 8, characterized in that: one end of the one-way air plug (6) provided with the vent groove notch is abutted with an opening clamp spring (7), and the side face of the opening clamp spring (7) is abutted to the edge of the inner wall of the annular positioning clamping groove (11).

10. A rotary gas valve according to claim 1, characterized in that: the vent groove notch of the one-way air plug (6) is communicated with the transition cavity (4).