CN214425407U - Pipe orifice sealing structure and stop valve - Google Patents

Abstract

The utility model belongs to the technical field of the pipeline is sealed, specifically disclose a pipe orifice seal structure and stop valve. The pipe orifice sealing structure comprises: the rubber plug comprises a main pipe part with one closed end and one opened end, the inner bottom surface of the main pipe part is a spherical convex surface with a high middle part and a low periphery, the periphery of the spherical convex surface is connected with the inner wall of the main pipe part, and the rubber plug is made of an elastic material; and the outer wall of the pipe to be sealed is in interference fit with the inner wall of the main pipe part, and the pipe orifice of the pipe to be sealed is abutted against the spherical convex surface. The stop valve includes the valve body and sets up the valve rod in the valve body, still includes pipe orifice seal structure as above, treats that the sealed tube keeps away from the one end and the valve body sealing connection of plug. The utility model discloses a plug, mouth of pipe seal structure and stop valve can improve the sealed convenience of mouth of pipe and reliability, reduces the sealed required cost of mouth of pipe.

Description

Pipe orifice sealing structure and stop valve

Technical Field

The utility model relates to a pipeline sealing technique field especially relates to a mouth of pipe seal structure and stop valve.

Background

The shutoff valve is a pipe control actuator for connecting an indoor unit and an outdoor unit, and generally includes a valve body to which a connection pipe for connecting the indoor unit is connected and in which a fluid passage communicating with the connection pipe is formed, and a valve rod movably disposed in a valve chamber to selectively open and close the fluid passage by movement of the valve rod in the valve chamber.

The stop valve is after production is accomplished and before the assembly final assembly, need seal the mouth of pipe of connecting pipe to realize the inside waterproof dirt-proof sealed effect of stop valve. The pipe orifice sealing of the existing connecting pipe usually adopts an assembly form of a welding sealing cap, and the pipe orifice sealing form has the following defects: the assembly operation is troublesome, two persons are required to cooperate, one person assembles the sealing cap and supports the pipe orifice of the connecting pipe by using a special tool, the other person operates and welds to finish the sealing operation, time and labor are wasted, and the assembly efficiency is low; the welding assembly mode is adopted, the after-sale service is not facilitated, and the maintenance and replacement cost is high; the form of welding a sealing cap on the pipe orifice is adopted, so that the problems of overheating, overburning and the like of the copper pipe are easily caused by multiple welding, and the service life of the stop valve is influenced; and the problem of residual welding slag in the copper pipe also exists in the welding process, so that the assembly butt joint test, after-sale installation and the operation of an assembly system are influenced.

Therefore, it is desirable to provide a new nozzle sealing form for connecting pipes to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a mouth of pipe seal structure and stop valve improves mouth of pipe sealing reliability and convenience.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a spout sealing structure comprising:

the rubber plug comprises a main pipe part with one closed end and one open end, the inner bottom surface of the main pipe part is a spherical convex surface with a high middle part and a low periphery, the periphery of the spherical convex surface is connected with the inner wall of the main pipe part, and the rubber plug is made of an elastic material;

treat the sealed tube, treat the outer wall of sealed tube with the inner wall interference fit of main part pipe portion, just treat the mouth of pipe of sealed tube and support and press in the ball-type convex surface.

As a preferred technical scheme of the pipe orifice sealing structure, the included angle between the tangent line of the spherical convex surface at the periphery and the inner wall is 5-30 degrees.

As a preferred technical scheme of a pipe orifice sealing structure, the pipe to be sealed comprises a main pipe part, a transition pipe part and a port pipe part which are sequentially connected, wherein the outer diameter of the main pipe part is smaller than that of the port pipe part, the outer diameter of the transition pipe part is gradually increased along the direction from the main pipe part to the port pipe part, and the port pipe part is in interference fit with the inner wall;

the convex boss portion that is equipped with of inner wall of main part pipe portion, the boss portion is close to one side of ball-type convex surface has the joint face, the joint face with the inner wall slope is connected, the joint face with the outer wall butt of transition pipe portion.

As a preferable technical solution of the port sealing structure, an axial length of the inner wall between the engagement surface and the spherical convex surface is equal to an axial length of the port tube portion.

As a preferred technical scheme of the pipe orifice sealing structure, the outer wall of the transition pipe part is in a cone frustum shape, and an included angle between the clamping surface and the inner wall is equal to an included angle between the outer wall of the transition pipe part and the outer wall of the port pipe part.

As a preferred technical solution of the pipe orifice sealing structure, the length of the clamping surface along the axial direction of the rubber plug is smaller than the axial length of the transition pipe portion.

As a preferred technical scheme of the pipe orifice sealing structure, the length of the clamping surface along the axial direction of the rubber plug is equal to 0.3 mm-1 mm.

As an optimal technical scheme of a pipe orifice sealing structure, a guide inclined plane is arranged on the inner wall of the opening end of the rubber plug, one end of the guide inclined plane is connected with the boss part, the other end of the guide inclined plane is inclined and extends towards the direction of the opening of the rubber plug, and the maximum inner diameter of the guide inclined plane is larger than the outer diameter of the port pipe part.

As a preferred technical scheme of the pipe orifice sealing structure, the rubber plug is provided with an identification mark, and the identification mark is used for identifying the type of the rubber plug.

The stop valve comprises a valve body, a valve rod arranged in the valve body and a pipe orifice sealing structure, wherein the pipe orifice sealing structure is arranged on the valve rod, and one end of a to-be-sealed pipe, which is far away from a rubber plug, is connected with the valve body in a sealing manner.

The beneficial effects of the utility model reside in that:

the utility model provides a pipe orifice sealing structure, through setting up the mouth of pipe of sealing waiting to be sealed of plug seal of taking the spherical convex surface, make elastic spherical convex surface wrap up the mouth of pipe completely under the mouth of pipe extrusion effect of waiting to seal the pipe, prevent effectively that the inside material of waiting to seal the pipe from leaking and outside impurity from getting into waiting to seal the inside of pipe; meanwhile, in the use process of the rubber plug, impurities such as dust and the like can be further prevented from entering the rubber plug by interference fit of the inner wall of the main body pipe part and the outer wall of the pipe to be sealed, and the sealing effect is improved; the form of sealing the pipe orifice of the pipe to be sealed by the rubber plug is adopted, so that the assembly is simple, the disassembly and the assembly are convenient, no external tool or special auxiliary materials are needed, the assembly and the maintenance are convenient, and the efficiency is higher; the rubber plug is easy to process, can be repeatedly utilized and has lower cost; meanwhile, the form of the sealing pipe orifice can not cause interference on the subsequent installation and use of the pipe to be sealed, and the use safety and reliability of the pipe to be sealed are ensured.

The utility model provides a stop valve carries out the mouth of pipe through adopting foretell mouth of pipe seal structure and seals, improves stop valve's use reliability and life.

Drawings

Fig. 1 is a schematic structural diagram of a pipe orifice sealing structure provided in a first embodiment of the present invention;

fig. 2 is a cross-sectional view of a pipe to be sealed according to an embodiment of the present invention;

fig. 3 is a cross-sectional view of a rubber plug according to an embodiment of the present invention;

fig. 4 is a partial enlarged view at I in fig. 3.

The figures are labeled as follows:

1. a rubber plug; 11. a main body tube portion; 111. an inner wall; 12. a spherical convex surface; 13. a boss portion; 131. a clamping surface; 132. a convex table surface; 14. a guide slope;

2. a tube to be sealed; 21. a main pipe portion; 22. a transition duct section; 23. a port tube portion.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

Fig. 1 is a schematic structural view of a pipe orifice sealing structure provided by the first embodiment of the present invention, fig. 2 is a cross-sectional view of a pipe to be sealed provided by the first embodiment of the present invention, fig. 3 is a cross-sectional view of a rubber plug provided by the first embodiment of the present invention, and fig. 4 is a partial enlarged view of the I point in fig. 3. As shown in fig. 1 to 4, the present embodiment provides a pipe orifice sealing structure, which can be applied to various occasions where pipe orifices need to be sealed, so as to seal the interior of a pipeline in a waterproof and dustproof manner. If the sealing device can be applied to a stop valve, the nozzle of a connecting pipe of the stop valve is sealed.

Specifically, the tube mouth seal structure that this embodiment provided includes waiting to seal tube 2 and plug 1, and plug 1 is used for treating the mouth of pipe of waiting to seal tube 2 and seals. The rubber plug 1 comprises a main pipe part 11 with an opening at one end and a closed end, the inner bottom surface of the main pipe part 11 is a spherical convex surface 12 with a high middle part and a low periphery, the periphery of the spherical convex surface 12 is connected with the inner wall 111 of the main pipe part 11, and the rubber plug 1 is made of elastic materials. The outer wall of the tube 2 to be sealed is in interference fit with the inner wall 111 of the main tube portion 11, and the opening of the tube 2 to be sealed abuts against the spherical convex surface 12.

According to the pipe orifice sealing structure provided by the embodiment, the pipe orifice of the pipe to be sealed 2 is sealed by the rubber plug 1 with the spherical convex surface 12, so that the elastic spherical convex surface 12 completely wraps the pipe orifice under the extrusion action of the pipe orifice of the pipe to be sealed 2, and the leakage of internal substances of the pipe to be sealed 2 and the entering of external impurities into the pipe to be sealed 2 are effectively prevented; simultaneously, the inner wall 111 of main part pipe portion 11 and the outer wall interference fit of waiting sealed tube 2 can prevent further that impurity such as dust from getting into inside plug 1, improve sealed effect. The form that the rubber plug 1 seals the pipe orifice of the pipe 2 to be sealed is adopted, so that the assembly is simple, the disassembly and the assembly are convenient, no external tool or special auxiliary materials are needed, the assembly and the maintenance are convenient, and the efficiency is higher; the rubber plug 1 is easy to process, can be repeatedly utilized and has lower cost; meanwhile, the form of the sealing pipe orifice can not cause interference on the subsequent installation and use of the pipe 2 to be sealed, and the use safety and reliability of the pipe 2 to be sealed are ensured.

Furthermore, the included angle between the tangent line of the joint of the spherical convex surface 12 and the inner wall 111 is 10-30 degrees, so that the spherical convex surface 12 can wrap and fill the pipe orifice of the pipe to be sealed 2, and the interference of the arrangement of the spherical convex surface 12 on the assembly between the pipe to be sealed 2 and the rubber plug 1 is avoided.

For avoiding plug 1 and waiting sealed tube 2 to break away from, wait sealed tube 2 including the main pipe portion 21, transition pipe portion 22 and the port pipe portion 23 that connect gradually, the external diameter of main pipe portion 21 is less than the external diameter of port pipe portion 23, and the external diameter of transition pipe portion 22 increases gradually along the direction of main pipe portion 21 to port pipe portion 23. The inner wall 111 of plug 1 is equipped with boss portion 13 in the protruding way, and boss portion 13 is located and is close to the open-ended one end of plug 1, and one side that boss portion 13 is towards spherical convex surface 12 has the joint face 131 of being connected with inner wall 111 slope, and joint face 131 and the outer wall butt of transition pipe portion 22. This kind of setting form can be in port pipe portion 23 extrusion insert 1 inside back of plug, through the cooperation of transition pipe portion 22 with joint face 131, prevents that port pipe portion 23 from deviating from plug 1, guarantees to treat sealed tube 2 and plug 1's stability and reliability of being connected.

Further, the length of the port tube part 23 is equal to the length of the inner wall 111 between the clamping surface 131 and the spherical convex surface 12, so that the reliability and stability of the assembly of the tube 2 to be sealed and the rubber plug 1 are improved.

Further, the outer wall of transition pipe portion 22 is frustum type structure, and the contained angle between the inner wall 111 of joint face 131 and main part pipe portion 11 is the same with the contained angle between the outer wall of transition pipe portion 22 and the outer wall of port pipe portion 23 to increase the area of contact of transition pipe portion 22 and joint face 131, improve plug 1 and treat joint stability and the reliability between sealed tube 2. In the present embodiment, the included angle between the engaging surface 131 and the inner wall 111 is 120 ° to 150 °, and is preferably 135 °.

Preferably, the length of the clamping surface 131 along the axial direction of the rubber plug 1 is smaller than the axial length of the transition pipe part 22, so as to reduce the assembly difficulty. Further, the length of the clamping surface 131 along the axial direction of the rubber plug 1 is preferably 0.3mm to 1mm, and is most preferably 0.5 mm.

The boss portion 13 further includes a boss surface 132 coaxially disposed with the inner wall 111, one end of the clamping surface 131 is connected to the inner wall 111, the other end of the clamping surface 131 is connected to the boss surface 132, and the inner diameter of the boss surface 132 is greater than the outer diameter of the main pipe portion 21, so as to reduce the assembling difficulty and improve the processing convenience of the rubber plug 1.

Preferably, the boss portion 13 is of an annular structure, so that the anti-dropping reliability of the pipe to be sealed 2 can be further improved, and the processing convenience of the rubber plug 1 is improved. In other embodiments, the boss portion 13 may have an arc-shaped structure, and the boss portion 13 is provided in plurality at intervals along the circumferential direction of the inner wall 111.

To further facilitate the assembly of the rubber plug 1 and the pipe to be sealed 2, the inner wall 111 at the opening end of the rubber plug 1 is provided with a guide inclined plane 14, one end of the guide inclined plane 14 is connected with the boss surface 132, the other end of the guide inclined plane 14 extends obliquely along the direction towards the opening of the rubber plug 1, and the maximum inner diameter of the guide inclined plane 14 is greater than the outer diameter of the port pipe part 23. The setting of direction inclined plane 14 makes the open end of plug 1 be the flaring form, for waiting that sealed tube 2 gets into plug 1 inside to provide the direction. The angle between the inclined guide surface 14 and the boss surface 132 is 120-150 deg., preferably 135 deg..

In this embodiment, the other end of the guiding inclined plane 14 is connected with the end surface of the rubber plug 1, so as to simplify the processing of the rubber plug 1. In other embodiments, the other end of the guide slope 14 may also be provided as a flared tube portion having an inner diameter equal to the maximum inner diameter of the guide slope 14.

Preferably, the rubber plug 1 is made of rubber or Polyvinyl chloride (PVC). However, the utility model discloses do not be limited to this, the concrete material of plug 1 can carry out concrete selection according to the user demand of treating sealed tube 2, as long as can satisfy certain elastic deformation characteristic and can seal up can.

Further, the rubber plug 1 is provided with an identification mark for identifying the rubber plugs 1 of different models, so that the rubber plugs 1 are prevented from being taken by mistake and used together. In the present embodiment, the identification mark is the color of the rubber plug 1, which can be realized by doping the rubber plug 1 with color master of the required color, or can be realized by other dyeing methods. In other embodiments, the identification mark can also be a character or symbol mark engraved on the outside of the rubber plug 1.

In the present embodiment, the tube to be sealed 2 is a copper tube, but it is understood that the tube to be sealed 2 may also be a plastic tube or a tube made of other materials, and the present embodiment does not specifically limit this.

Example two

The embodiment provides a stop valve, and it includes the valve body and sets up in the inside valve rod of valve body, is connected with the connecting pipe that is used for the indoor set to connect on the valve body, and the mouth of pipe department of connecting pipe is provided with plug 1 in embodiment one, promptly, in this embodiment, the connecting pipe is promptly for treating sealed tube 2 in embodiment one.

The stop valve that this embodiment provided, through adopting the mouth of pipe seal structure in the embodiment one, can improve the assembly reliability and the convenience of stop valve, reduce the use cost of stop valve, improve the life of stop valve.

It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.

Claims (10)

1. A spout sealing structure, comprising:

the rubber plug comprises a rubber plug (1), wherein the rubber plug (1) comprises a main pipe part (11) with one closed end and one open end, the inner bottom surface of the main pipe part (11) is a spherical convex surface (12) with a high middle part and a low periphery, the periphery of the spherical convex surface (12) is connected with the inner wall (111) of the main pipe part (11), and the rubber plug (1) is made of an elastic material;

treat sealed tube (2), treat the outer wall of sealed tube (2) with inner wall (111) interference fit of main part pipe portion (11), just treat the mouth of pipe of sealed tube (2) and support and press in ball-type convex surface (12).

2. The spout sealing structure of claim 1, wherein an angle between a tangent line of the spherical convex surface (12) at the periphery and the inner wall (111) is 5 ° to 30 °.

3. The spout sealing structure of claim 1, wherein the tube to be sealed (2) comprises a main tube portion (21), a transition tube portion (22) and a port tube portion (23) which are connected in sequence, the main tube portion (21) has an outer diameter smaller than that of the port tube portion (23), the transition tube portion (22) has an outer diameter gradually increasing in a direction from the main tube portion (21) to the port tube portion (23), and the port tube portion (23) is in interference fit with the inner wall (111);

the convex-type pipe is characterized in that a boss part (13) is convexly arranged on the inner wall (111) of the main pipe part (11), a clamping surface (131) is arranged on one side, close to the spherical convex surface (12), of the boss part (13), the clamping surface (131) is obliquely connected with the inner wall (111), and the clamping surface (131) is abutted to the outer wall of the transition pipe part (22).

4. The spout sealing structure of claim 3, wherein an axial length of the inner wall (111) between the snap-fit surface (131) and the spherical convex surface (12) is equal to an axial length of the port tube portion (23).

5. The spout sealing structure of claim 4, wherein the outer wall of the transition tube portion (22) is in a truncated cone shape, and the included angle between the engagement surface (131) and the inner wall (111) is equal to the included angle between the outer wall of the transition tube portion (22) and the outer wall of the port tube portion (23).

6. The spout sealing structure of claim 5, wherein the length of the catching surface (131) in the axial direction of the rubber plug (1) is smaller than the axial length of the transition tube part (22).

7. The spout sealing structure of claim 6, wherein the length of the catching surface (131) along the axial direction of the rubber plug (1) is equal to 0.3mm to 1 mm.

8. The spout sealing structure of any one of claims 5 to 7, wherein the inner wall (111) of the opening end of the rubber plug (1) is provided with a guide slope (14), one end of the guide slope (14) is connected to the boss part (13), the other end of the guide slope (14) extends obliquely in a direction toward the opening of the rubber plug (1), and the maximum inner diameter of the guide slope (14) is larger than the outer diameter of the port tube part (23).

9. The spout sealing structure of any one of claims 1 to 7, wherein the rubber plug (1) is provided with an identification mark for identifying the model of the rubber plug (1).

10. A stop valve, including the valve body and set up the valve stem in the valve body, characterized by, still include the mouth of pipe seal structure of any claim 1-9, the one end of waiting to seal the pipe (2) and keeping away from the plug (1) is connected with the valve body sealing.

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