CN116816942B - Bottle valve structure - Google Patents

Abstract

A bottle valve structure includes: a valve body, provided with a valve cavity, and an air inlet and an air outlet both connected to the valve cavity, the valve cavity being provided with a valve hole; a valve core, installed in the valve cavity and movable along the axial direction of the air inlet, the valve core being provided with a blocking rod for blocking the air inlet, a gap zone being formed between the side wall of the blocking rod and the wall of the valve hole; a protective baffle, slidably sleeved on the blocking rod, the protective baffle being detachably connected to the valve cavity and axially fixed relative to the valve body, the protective baffle being provided with a receiving portion that cooperates and connects to the gap zone, the receiving portion being used to achieve blocking of the gap zone. The above scheme disperses the thrust of high-pressure gas to the valve body through the protective baffle, effectively reducing the thrust of high-pressure gas on the valve core, improving the matching stability between the valve core and the valve body, and increasing the service life of the bottle valve.

Description

Bottle valve structure

Technical Field

The invention relates to the technical field of valve bodies, in particular to a bottle valve structure.

Background

Gas cylinders are widely used in industrial fields or medical fields, and in order to facilitate storage and transportation, highly compressed gas is generally used in the cylinder. In order to realize normal pressure output of high-pressure gas in the bottle body, a bottle valve is often arranged at the bottle opening position of the bottle body, and when the high-pressure gas in the bottle body needs to be taken, the opening degree of the bottle valve is controlled to realize the function of converting the high-pressure gas in the bottle body into normal pressure gas or low-pressure gas for output.

The bottle valve comprises a valve body and a valve core, wherein the valve body is provided with a high-pressure air inlet hole and a low-pressure air outlet hole, the high-pressure air inlet hole is communicated with the bottle body, and the valve core is controlled to block or open the high-pressure air inlet hole in the prior art, so that the opening and closing function of the bottle valve is realized. However, because the air pressure in the high-pressure air inlet hole is higher, a larger thrust action can be applied to the valve core, so that not only can the adjusting resistance of the valve core relative to the valve body be increased, but also the problem that the matching structure of the valve core relative to the valve body is invalid or damaged is easily caused when the air pressure in the bottle is too high, and potential safety hazards are formed.

Disclosure of Invention

The invention aims to solve the problems that in the prior art, because the air pressure in the high-pressure air inlet hole of the bottle valve is high, a large thrust action is exerted on the valve core, the adjusting resistance of the valve core relative to the valve body is increased, and the matching structure of the valve core relative to the valve body is easy to fail or damage when the air pressure in the bottle is too high.

In order to solve the above problems, the present invention provides a bottle valve structure, comprising:

The valve body is provided with a valve cavity, an air inlet hole and an air outlet hole which are both communicated with the valve cavity, and one side of the valve cavity, which is close to the air inlet hole, is provided with a valve hole coaxial with the air inlet hole;

The valve core is provided with a blocking connecting rod which is arranged towards the air inlet, the valve core is arranged in the valve cavity and can move along the axial direction of the air inlet so as to realize the opening or closing of the air inlet by the blocking connecting rod, and the blocking connecting rod extends into the valve hole and forms a clearance area between the side wall of the blocking connecting rod and the inner peripheral wall of the valve hole;

The annular protection keeps off the cover, slide cup joint in the shutoff pole, the protection keep off the cover can dismantle connect in the valve body and be fixed relative to the valve body in the axial, the protection keeps off the cover be equipped with the cooperation be connected to the adapting unit in clearance district, adapting unit is used for realizing to the shutoff in clearance district.

Compared with the prior art, the clearance area is arranged between the outer side wall of the blocking connecting rod of the valve core and the inner peripheral wall of the valve hole, when the blocking connecting rod is separated from the air inlet hole to enable the air inlet hole to be opened, only one part of high-pressure gas can act on the blocking connecting rod, the other part of high-pressure gas can enter the clearance area to reduce the high-pressure gas thrust force of the blocking connecting rod in the axial direction, meanwhile, the high-pressure gas entering the clearance area can act on the receiving part of the protective retaining sleeve to enable the protective retaining sleeve to be capable of transmitting the thrust force of the high-pressure gas to the valve body in a dispersed mode, at the moment, the problem that the high-pressure gas flows into the valve hole from the valve hole to the inside can be avoided due to the blocking effect of the protective retaining sleeve, the coordination stability between the valve core and the valve body is improved, and the service life of the bottle valve is prolonged.

Preferably, the bearing part is an annular boss, the boss is arranged in the middle of the end face of the protective baffle sleeve facing the gap area, and the boss is inserted into the gap area. The boss of protection fender cover can effectively accept the thrust effect of high-pressure gas for the protection fender cover is better dispersed the transmission of thrust to the valve body, makes overall structure compacter and stable.

Preferably, the above scheme further comprises a plurality of sealing rings, wherein the sealing rings are sleeved between the plugging rod and the protection retaining sleeve and the air inlet hole, so that the tightness between the plugging rod and the valve hole is effectively improved, and the leakage of high-pressure gas from the gap area is reduced.

Preferably, the scheme further comprises a check ring, the side face of the plugging rod, facing to one end of the air inlet hole, is provided with an annular protruding ring, the sealing ring and the check ring are located at positions between the protection retaining sleeve and the protruding ring, and the sealing ring and the check ring are distributed at intervals, so that the sealing effect is improved, and the thrust of high-pressure air of the air inlet hole can be better transmitted to the protection retaining sleeve.

Preferably, a clamping groove is formed in the inner peripheral wall of the valve cavity, and the outer edge of the protection retaining sleeve is clamped to the clamping groove, so that stable connection of the protection retaining sleeve relative to the valve body is achieved, and high-pressure gas thrust received by the protection retaining sleeve is ensured to be transmitted to the valve body from the groove wall of the clamping groove.

Preferably, the peripheral wall of the clamping groove is provided with an overpressure protection hole communicated to the outside of the valve body, the end face of the protection retaining sleeve, which is opposite to the air inlet hole, is provided with a radial overflow groove, and the overflow groove penetrates through the inner annular surface and the outer annular surface of the protection retaining sleeve, so that when unexpected situations occur, high-pressure gas leaks through the gap area, the leaked gas can be discharged out of the valve cavity through the overpressure protection hole.

Preferably, a plug is detachably connected to one end, facing the air inlet, of the plug rod of the valve core, and the plug is gradually narrowed along the direction close to the air inlet to form a conical structure, so that a better plugging effect on the air inlet is achieved.

Preferably, the axes of the air inlet hole and the air outlet hole are mutually perpendicular, so that high-pressure air flowing out of the air inlet hole can enter the air outlet hole after turning, and pressure reduction is achieved.

Preferably, a screw hole coaxial with the air inlet hole is formed in one side, away from the air inlet hole, of the valve cavity, an external thread is formed in the outer wall of the valve core, and the valve core is movably screwed to the screw hole so that when the valve core rotates in the screw hole, the valve core moves in the valve cavity axially.

Preferably, the scheme further comprises a hand wheel, wherein the hand wheel is connected to one side, far away from the blocking connecting rod, of the valve core, and the hand wheel is used for driving the valve core to rotate relative to the screw hole, so that adjustment is simple and convenient.

Drawings

FIG. 1 is a schematic illustration of a bottle valve construction;

FIG. 2 is a schematic top view of a bottle valve structure;

FIG. 3 is a schematic cross-sectional view taken along section line A-A in FIG. 2;

FIG. 4 is a schematic cross-sectional view taken along section line B-B in FIG. 2;

FIG. 5 is a mating cross-sectional view of a valve core, a stopper rod and a protective sleeve of a cylinder valve structure;

fig. 6 is a schematic diagram of the cooperation of a plugging rod and a protective sleeve of a bottle valve structure.

The reference numerals are used to describe the components,

1. Valve body 101, valve body 102, valve cover body 11, valve cavity 111, valve hole 112, screw hole 12, air inlet hole 13, air outlet hole 14, clamping groove 15, overpressure protection hole 2, valve core 21, plugging rod 211, raised ring 212, caulking groove 22, external screw thread 23, plug 31, protection blocking sleeve 311, boss 312, overflow groove 32, sealing ring 33, retainer ring 4, hand wheel 41 and spline groove.

DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION

In order that the above objects, features and advantages of the present invention will be readily apparent, a more particular description of the invention briefly described above will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings, in which, as illustrated in the appended drawings, it is to be understood that the embodiments described are merely some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention. It should be further noted that, in the embodiments of the present invention, all directional indications (such as up, down, left, right, front, back, inner, and outer) are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indication is correspondingly changed.

Referring to fig. 1-6, a bottle valve structure according to an embodiment of the present invention includes:

The valve body 1 is provided with a valve cavity 11, an air inlet hole 12 and an air outlet hole 13 which are both communicated with the valve cavity 11, and one side of the valve cavity 11, which is close to the air inlet hole 12, is provided with a valve hole 111 which is coaxial with the air inlet hole 12;

The valve core 2 is provided with a blocking connecting rod 21 arranged towards the air inlet hole 12, the valve core 2 is arranged in the valve cavity 11 and can move along the axial direction of the air inlet hole 12 so as to realize the opening or closing of the blocking connecting rod 21 to the air inlet hole 12, and the blocking connecting rod 21 extends into the valve hole 111 and forms a gap area between the side wall of the blocking connecting rod 21 and the inner peripheral wall of the valve hole 111;

The annular protection keeps off cover 31, the slip cup joint in the shutoff pole 21, protection keeps off cover 31 detachable connection in valve body 1 and in the axial fixed relatively valve body 1, protection keeps off cover 31 be equipped with the cooperation be connected to the adapting unit in clearance district, adapting unit is used for realizing to the shutoff in clearance district.

When the valve core is used, the plug rod 21 is in a disconnected state with the air inlet hole 12 and the air outlet hole 13 by adjusting the moving distance of the valve core 2 in the valve cavity 11, and when the plug rod 21 is separated from the air inlet hole 12, the air inlet hole 12 and the air outlet hole 13 are in a communicated state. Compared with the prior art, in the scheme, the clearance area is arranged between the outer side wall of the plugging rod 21 and the inner peripheral wall of the valve hole 111, when the plugging rod 21 is separated from the air inlet hole 12 to enable the air inlet hole 12 to be opened, only part of high-pressure gas acts on the plugging rod 21, the other part of high-pressure gas enters the clearance area to reduce the thrust of the high-pressure gas received by the plugging rod 21 in the axial direction, meanwhile, the high-pressure gas entering the clearance area acts on the receiving part of the protective retaining sleeve 31, so that the protective retaining sleeve 31 can transmit the thrust of the high-pressure gas to the valve body 1 in a dispersed manner, at the moment, the problem that the high-pressure gas rushes into the valve cavity 11 from the valve hole 111 due to the plugging effect of the protective retaining sleeve 31 can be avoided, the stability of the cooperation between the valve core 2 and the valve body 1 is improved, and the service life of the bottle valve is prolonged.

The mating relationship of the valve element 2 with respect to the valve body 1 may be a form in the prior art as long as the movement of the valve element 2 with respect to the valve body 1 in the axial direction of the intake hole 12 is enabled. In order to make the description more specific, in this embodiment, the valve core 2 is used as a reference direction in the vertical direction, the air inlet hole 12 is vertically arranged and communicated to the lower part of the valve cavity 11, and the air outlet hole 13 is horizontally arranged and communicated to the right side of the lower part of the valve cavity 11, and because the axes of the air inlet hole 12 and the air outlet hole 13 are mutually perpendicular, the high-pressure air flowing out of the air inlet hole 12 can enter the air outlet hole 13 after turning, so that a better pressure reducing effect is achieved. The side of the valve cavity 11 away from the air inlet hole 12 is provided with a screw hole 112 coaxial with the air inlet hole 12, and the outer wall of the valve core 2 is provided with an external thread 22 so that the valve core 2 is movably screwed to the screw hole 112, thereby controlling the vertical moving distance of the valve core 2 in the valve body 1 by rotating the valve core 2. The blocking rod 21 is connected to the lower part of the valve core 2, and is abutted to the air inlet hole 12 or separated from the air inlet hole 12 under the drive of the valve core 2, namely, the opening and closing control of the corresponding air inlet hole 12 is performed. Further, one side of the valve core 2 far away from the plugging rod 21 is provided with a hand wheel 4, the upper end of the valve core 2 is provided with a spline, the hand wheel 4 is connected to the spline of the valve core 2 through a spline groove 41, circumferential fixation of the hand wheel 4 and the valve core 2 is achieved, and therefore the hand wheel 4 can drive the valve core 2 to rotate relative to the valve body 1, and adjustment is simple and convenient.

In this embodiment, the aperture of the valve hole 111 is larger than the rod diameter of the plugging rod 21, the upper portion of the plugging rod 21 is located above the valve hole 111, and the lower portion of the plugging rod 21 extends into the valve hole 111, so that an annular gap area is formed between the side wall of the lower portion of the plugging rod 21 and the inner peripheral wall of the valve hole 111. The annular protection retaining sleeve 31 is sleeved on the upper portion of the plugging rod 21 in a sliding manner, the bearing part is a boss 311 arranged in the middle of the lower end face of the protection retaining sleeve 31, the boss 311 protrudes downwards, and the boss 311 is in plug fit with the gap area. The boss 311 can effectively receive the thrust action of the high-pressure gas, and the thrust action is better transmitted to the valve body 1 through the protective retaining sleeve 31, and the whole structure is more compact and stable. It should be noted that the protection sleeve 31 is preferably sleeved on the plugging rod 21 in a manner of being capable of sliding and rotating relatively, so as to avoid abrasion between the protection sleeve 31 and the valve body 1.

As an optimization, the solution also comprises at least one sealing ring 32 and several check rings 33. It should be noted that the above-mentioned "several" includes the case where the number is zero. The seal ring 32 is preferably made of rubber, and the retainer ring 33 is made of metal. As shown in the figure, in this embodiment, the number of the sealing rings 32 and the number of the check rings 33 are two, the sealing rings 32 and the check rings 33 are both sleeved on the plugging rod 21 and located between the protection baffle sleeve 31 and the air inlet hole 12, and the sealing rings 32 and the check rings 33 are arranged at intervals, so that the thrust action of the high-pressure gas is transmitted to the protection baffle sleeve 31 after passing through the sealing rings 32 and the check rings 33. The sealing ring 32 can effectively improve the sealing performance among the protection retaining sleeve 31, the plugging rod 21 and the valve hole 111, reduce the leakage problem of high-pressure gas from a clearance area, and the retaining ring 33 can play a role in separating the sealing ring 32. Further, in this embodiment, the side surface of the plugging rod 21 facing one end of the air inlet hole 12 is provided with an annular protruding ring 211, and the protruding ring 211 can play an axial limiting role on the sealing ring 32 and the retainer ring 33, so that the sealing ring 32 and the retainer ring 33 are limited to the position between the protective retaining sleeve 31 and the protruding ring 211. In addition, in the above scheme, the sealing ring 32 is adjacent to the protection baffle sleeve 31, and the retainer ring 33 is adjacent to the raised ring 211, so that when the valve core 2 drives the plugging rod 21 and the plug 23 to rotate, the retainer ring 33 can separate the sealing ring 32 and the raised ring 211, thereby not only improving the sealing effect, but also enabling the thrust of the high-pressure gas of the air inlet hole 12 to be better transferred to the protection baffle sleeve 31.

Further, a plug 23 is detachably connected to one end, facing the air inlet hole 12, of the plug rod 21 of the valve core 2, and the plug 23 and the plug rod 21 can be in threaded connection, clamping connection and the like. For example, in the present embodiment, a concave caulking groove 212 is provided at the lower end of the plugging rod 21, a protruding structure is provided at the upper end of the plug 23, and the protruding structure is clamped to the caulking groove 212 in an interference fit manner. The lower end of the plug 23 is gradually narrowed in a direction approaching the air inlet hole 12 to form a conical structure, thereby realizing a better plugging effect on the air inlet hole 12.

In this embodiment, the clamping groove 14 of the inner peripheral wall of the valve cavity 11, the outer edge of the protection baffle sleeve 31 is clamped to the clamping groove 14, and the clamping groove 14 is preferably annular, so that stable connection of the protection baffle sleeve 31 relative to the valve body 1 is realized, and upward high-pressure gas thrust received by the protection baffle sleeve 31 is ensured to be transmitted from the upper groove wall of the clamping groove 14 to the valve body 1. More specifically, in this embodiment, the valve body 1 includes a valve body 101 and a valve cover body 102, the upper portion of the valve body 101 is provided with a mounting groove for the valve cover body 102 to be inserted, and the height of the valve cover body 102 is smaller than the depth of the mounting groove of the valve body 101, so that a gap between the lower end surface of the valve cover body 102 and the bottom of the mounting groove of the valve body 101 is the clamping groove 14. The upper part of the valve cavity 11 and the screw holes 112 are all positioned in the valve cover body 102, and the lower part of the valve cavity 11, namely the valve hole 111, is positioned in the valve body 101, so that the processing and the assembly are convenient. Of course, the detachable connection between the protective collar 31 and the valve body 1 may be of other forms, for example, an internal thread is provided on the inner peripheral wall of the valve chamber 11, and an external thread is provided on the outer edge of the protective collar 11, so that the protective collar 31 is screwed inside the valve chamber 11.

Further, the peripheral wall of the clamping groove 14 is provided with an overpressure protection hole 15 communicated to the outside of the valve body 1, the upper end face of the protection baffle sleeve 31 is provided with a radial overflow groove 312, and the overflow groove 312 penetrates through the inner ring face and the outer ring face of the protection baffle sleeve 31, so that when unexpected situations occur to cause leakage of high-pressure gas through a clearance area, the leaked gas can be discharged out of the valve cavity 11 through the overpressure protection hole 15. It should be understood that, since the clamping groove 14 and the valve cavity 11 are in communication with each other, in other embodiments, the overpressure protection hole 15 may be directly provided on the inner peripheral wall of the valve cavity 11, and communicate the interior of the valve cavity 11 with the exterior of the valve body 1, so as to ensure that the leaked gas can be discharged from the overpressure protection hole 15 to the exterior of the valve body 1 when entering the valve cavity 11.

Although the present disclosure is described above, the scope of protection of the present disclosure is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the disclosure, and these changes and modifications will fall within the scope of the invention.

Claims (8)

1. A bottle valve structure, characterized by comprising: A valve body (1) is provided with a valve cavity (11), and an air inlet (12) and an air outlet (13) both connected to the valve cavity (11); a valve hole (111) coaxial with the air inlet (12) is provided on one side of the valve cavity (11) close to the air inlet (12); A valve core (2), the valve core (2) being provided with a blocking rod (21) disposed toward the air inlet hole (12), the valve core (2) being installed in the valve cavity (11) and being movable along the axial direction of the air inlet hole (12) so as to enable the blocking rod (21) to open or close the air inlet hole (12), the blocking rod (21) extending into the valve hole (111) and forming a gap between a side wall of the blocking rod (21) and an inner peripheral wall of the valve hole (111); an annular protective sleeve (31) is slidably sleeved on the blocking rod (21); the protective sleeve (31) is detachably connected to the valve body (1) and is fixed relative to the valve body (1) in the axial direction; the protective sleeve (31) is provided with a receiving portion that is cooperatively connected to the gap area, and the receiving portion is used to achieve blocking of the gap area; The inner peripheral wall of the valve cavity (11) is provided with a clamping groove (14), and the outer edge of the protective baffle (31) is clamped to the clamping groove (14); An overpressure protection hole (15) communicating with the outside of the valve body (1) is provided on a peripheral wall of the clamping groove (14), and an overflow groove (312) arranged radially is provided on the end surface of the protective sleeve (31) facing away from the air inlet (12), and the overflow groove (312) penetrates the inner annular surface and the outer annular surface of the protective sleeve (31). 2. A bottle valve structure according to claim 1, characterized in that the receiving portion is an annular boss (311), the boss (311) is arranged in the middle of the end surface of the protective sleeve (31) facing the gap area, and the boss (311) is inserted into the gap area. 3. A bottle valve structure according to claim 2, characterized in that it further comprises a plurality of sealing rings (32), wherein the sealing rings (32) are sleeved on the blocking rod (21) and are located between the protective baffle (31) and the air inlet (12). 4. A bottle valve structure according to claim 3, characterized in that it further comprises a retaining ring (33), an annular raised ring (211) is provided on the side surface of one end of the blocking rod (21) facing the air inlet (12), the sealing ring (32) and the retaining ring (33) are both located between the protective baffle (31) and the raised ring (211), and the sealing ring (32) and the retaining ring (33) are arranged at intervals. 5. A bottle valve structure according to claim 1, characterized in that the end of the plugging rod (21) of the valve core (2) facing the air inlet (12) is detachably connected to a plug (23), and the plug (23) gradually narrows in a direction close to the air inlet (12) to form a conical structure. 6. The bottle valve structure according to claim 1, characterized in that the axes of the air inlet (12) and the air outlet (13) are perpendicular to each other. 7. A bottle valve structure according to claim 1, characterized in that a screw hole (112) coaxial with the air inlet hole (12) is provided on a side of the valve cavity (11) away from the air inlet hole (12), and the outer wall of the valve core (2) is provided with an external thread (22), and the valve core (2) is movably screwed to the screw hole (112) so that when the valve core (2) rotates in the screw hole (112), the valve core (2) moves axially in the valve cavity (11). 8. A bottle valve structure according to claim 7, characterized in that it further comprises a handwheel (4), wherein the handwheel (4) is connected to a side of the valve core (2) away from the blocking rod (21), and the handwheel (4) is used to drive the valve core (2) to rotate relative to the screw hole (112).