CN209909356U

CN209909356U - Hard sealing connecting piece for gas delivery

Info

Publication number: CN209909356U
Application number: CN201822216325.XU
Authority: CN
Inventors: 盛斌; 吴水生; 富志霞
Original assignee: Shanghai Sansheng Health Technology Co Ltd
Current assignee: Shanghai Sansheng Health Technology Co Ltd
Priority date: 2018-12-27
Filing date: 2018-12-27
Publication date: 2020-01-07
Anticipated expiration: 2028-12-27

Abstract

The utility model particularly relates to a connecting piece. The hard sealing connecting piece for gas delivery comprises a hard joint, a hard clamping ring capable of being inserted into a pipe penetrating cavity of the hard joint and a hard packing head for pushing the hard clamping ring into the pipe penetrating cavity, wherein the pipe penetrating cavity in the hard joint comprises an upper cavity and a lower cavity, and an annular groove with a downward opening is formed in the lower end surface of the upper cavity; a cavity is arranged in the hard tightening head and comprises an upper cavity and a lower cavity; the hard clamping ring comprises an upper ring, a middle ring and a lower ring; the hard tightening head can push the hard clamping ring to: the upper end face of the upper ring is abutted in the annular groove, and the upper end face of the middle ring is abutted on the lower end face of the upper cavity. This patent adopts stereoplasm to connect, stereoplasm clamping ring, stereoplasm to compel tight head to connect the gas conveyer pipe, does not contain easy ageing rubber pad, rubber circle etc. long service life.

Description

Hard sealing connecting piece for gas delivery

Technical Field

The utility model relates to the field of machinary, concretely relates to connecting piece.

Background

The gas conveyer pipe is passed through the connecting piece and is connected, and current connecting piece is mostly soft seal structure, and the connecting piece relies on the rubber pad in it to seal promptly. Because the rubber pad is easy to age, the rubber pad is generally replaced once in 5 to 8 years.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a gas is carried and is used hard sealing connecting piece, solves above at least one technical problem.

The utility model provides a technical problem can adopt following technical scheme to realize:

the hard sealing connecting piece for gas conveying comprises a hard joint, a hard clamping ring capable of being inserted into a pipe penetrating cavity of the hard joint and a hard tightening head for pushing the hard clamping ring into the pipe penetrating cavity, and is characterized in that the pipe penetrating cavity in the hard joint comprises an upper cavity and a lower cavity, the upper cavity and the lower cavity are different in caliber size, the upper cavity and the lower cavity are communicated with each other, the inner diameter of the lower cavity is larger than that of the upper cavity, and an annular groove with a downward opening is formed in the lower end surface of the upper cavity;

a cavity is arranged in the hard tightening head and comprises an upper cavity and a lower cavity, the diameters of the upper cavity and the lower cavity are different, the upper cavity and the lower cavity are communicated, and the inner diameter of the lower cavity is larger than that of the upper cavity;

the hard clamping ring comprises an upper ring, a middle ring and a lower ring, the outer diameters of the upper ring, the middle ring and the lower ring are different in size, the shape of the upper ring is matched with that of the annular groove, the outer diameter of the middle ring is in interference fit with the inner diameter of the lower cavity, and the outer diameter of the lower ring is in interference fit with the inner diameter of the upper cavity;

the hard packing head can push the hard clamping ring to: the upper end face of the upper ring abuts against the inside of the annular groove, and the upper end face of the middle ring abuts against the lower end face of the upper cavity.

This patent adopts stereoplasm to connect, stereoplasm clamping ring, stereoplasm to compel tight head to connect the gas conveyer pipe, does not contain easy ageing rubber pad, rubber circle etc. long service life. In addition, this patent has optimized the structure that stereoplasm connects, stereoplasm presss from both sides tight circle, utilizes last circle and annular groove to form first horizontal seal structure, utilize the up end of well circle with the lower terminal surface of last cavity forms the horizontal seal structure of second way to horizontal seal has been realized, still utilized the external diameter of the change of stereoplasm clamp circle and the internal diameter of the change that stereoplasm connects, stereoplasm compels tight head to form vertical sealing in addition, and then makes this patent have better leakproofness. The more crucial is to set up a seal structure in annular groove department, utilizes annular groove's structure, can effectively hinder the air current to flow to both sides, further improves the leakproofness.

As a preferable scheme, the outer side wall of the annular groove is located in the vertical direction, the section of the inner side wall of the annular groove is in an inverted triangular shape, the top of the triangular shape is located below, the distance between the outer surface of the inner side wall and the inner surface of the outer side wall is gradually increased from top to bottom, and the uppermost end of the outer surface of the inner side wall abuts against the inner surface of the outer side wall.

The height of the inner side wall is smaller than that of the outer side wall.

The inner diameter of the upper ring is gradually reduced from top to bottom. To conform to the outer surface of the inner side wall of the annular groove.

The inner diameter of the middle ring is a variable inner diameter which is gradually increased, unchanged, gradually decreased, unchanged and gradually increased from top to bottom. A bayonet-like structure is never formed in the center ring to better fit the gas delivery tube.

As a preferable scheme, the hard clamping ring is divided into two parts along the vertical direction to form a left sub-clamping ring and a right sub-clamping ring, and the two sub-clamping rings can be opened and closed. Thus, the gas delivery pipe can be clamped more easily by opening and closing the two sub clamping rings.

In order to make the sealing more compact, the hard clamping ring may further divide the side wall into two parts at the joint of the two sub-clamping rings to form an inner sub-connecting wall and an outer sub-connecting wall, wherein one sub-connecting wall connects the sub-clamping ring on one side, and the other sub-connecting wall connects the sub-clamping ring on the other side. The two sub-connecting walls form a compression structure covered internally and externally at the joint of the sub-clamping rings, so that the sealing property can be effectively improved.

As a preferable scheme, external threads are arranged on the outer surfaces of the upper chamber and the lower chamber, and internal threads are arranged on the inner surface of the upper chamber. The hard tightening head is screwed on the hard joint through threads.

The hard joint is sleeved with a hexagonal structure for assisting screwing, and the hexagonal structure is fixedly connected with the hard joint. The hexagonal structure is preferably located at a junction of the upper chamber and the lower chamber.

The outer contour of the tightening head can also be hexagonal. To assist in screwing. It is further preferred that the packing head and the hexagonal structure are of the same size. The whole body is beautiful, and simultaneously, the hexagonal wrenches of the same type can be used for screwing.

Drawings

FIG. 1 is an exploded view of a structure of the present invention;

fig. 2 is a perspective view of the structure of fig. 1.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention will be further explained with reference to the specific drawings.

Referring to fig. 1 and 2, the hard sealing connecting piece for gas delivery comprises a hard joint 1, a hard clamping ring 2 capable of being inserted into a pipe penetrating cavity of the hard joint 1, and a hard packing head 3 for pushing the hard clamping ring 2 into the pipe penetrating cavity, wherein the pipe penetrating cavity in the hard joint 1 comprises an upper cavity 11 and a lower cavity 12 with different calibers, the upper cavity 11 and the lower cavity 12 are communicated with each other, the inner diameter of the lower cavity 12 is larger than that of the upper cavity 11, and an annular groove with a downward opening is arranged on the lower end surface of the upper cavity 11; a cavity is arranged in the hard tightening head 3, the cavity comprises an upper cavity 31 and a lower cavity 32 with different calibers, the upper cavity 31 and the lower cavity 32 are communicated with each other, and the inner diameter of the lower cavity 32 is larger than that of the upper cavity 31; the hard clamping ring 2 comprises an upper ring, a middle ring 21 and a lower ring 22 with different outer diameters, the shape of the upper ring is matched with that of the annular groove, the outer diameter of the middle ring 21 is in interference fit with the inner diameter of the lower chamber, and the outer diameter of the lower ring 22 is in interference fit with the inner diameter of the upper chamber; the hard tightening head 3 can push the hard clamping ring 2 to: the upper end face of the upper ring is abutted in the annular groove, and the upper end face of the middle ring 21 is abutted on the lower end face of the upper cavity.

This patent adopts stereoplasm to connect 1, stereoplasm clamp ring 2, stereoplasm to compel tight head 3 and connect the gas transmission pipe, does not contain easy ageing rubber pad, rubber circle etc. long service life. In addition, this patent has optimized the structure that stereoplasm connects 1, stereoplasm presss from both sides tight circle 2, utilizes last circle and annular groove to form first horizontal seal structure, utilizes the up end of well circle and the lower terminal surface of last cavity to form the horizontal seal structure of second way to horizontal seal has been realized, still utilizes the external diameter of the change of stereoplasm clamp circle 2 and the internal diameter that stereoplasm connects 1, the change of stereoplasm packing head 3 to form vertical seal in addition, and then makes this patent have better leakproofness. The more crucial is to set up a seal structure in annular groove department, utilizes annular groove's structure, can effectively hinder the air current to flow to both sides, further improves the leakproofness.

As a preferred scheme, the outer side wall of the annular groove is located in the vertical direction, the section of the inner side wall 14 of the annular groove is in an inverted triangular shape, the top of the triangle is located below, the distance between the outer surface of the inner side wall and the inner surface of the outer side wall 14 is gradually increased from top to bottom, and the uppermost end of the outer surface of the inner side wall 14 abuts against the inner surface of the outer side wall. The height of the inner side wall 14 is less than the height of the outer side wall. The inner diameter of the upper ring is gradually reduced from top to bottom. To conform to the outer surface of the inner side wall of the annular groove.

The inner diameter of the middle ring 21 is a variable inner diameter, which is gradually increased, then unchanged, then gradually decreased, then unchanged and then gradually increased from top to bottom. A bayonet-like structure is never formed in the center ring to better fit the gas delivery tube.

As a preferred scheme, the hard clamping ring 2 is divided into two parts along the vertical direction to form a left sub-clamping ring and a right sub-clamping ring, and the two sub-clamping rings can be opened and closed. Thus, the gas delivery pipe can be clamped more easily by opening and closing the two sub clamping rings. In order to make the sealing more compact, the hard clamping ring 2 can also divide the side wall into two at the joint of the two sub-clamping rings to form an inner sub-connecting wall and an outer sub-connecting wall, wherein one sub-connecting wall is connected with the sub-clamping ring on one side, and the other sub-connecting wall is connected with the sub-clamping ring on the other side. The two sub-connecting walls form a compression structure covered internally and externally at the joint of the sub-clamping rings, so that the sealing property can be effectively improved.

As a preferred scheme, the outer surfaces of the upper chamber and the lower chamber are provided with external threads, and the inner surface of the upper chamber is provided with internal threads. The hard tightening head 3 is screwed on the hard joint 1. The hard joint 1 is externally sleeved with a hexagonal structure for assisting screwing, and the hexagonal structure is fixedly connected with the hard joint 1. The hexagonal structure is preferably located at the junction of the upper and lower chambers. The outer contour of the packing head can also be hexagonal. To assist in screwing. It is further preferred that the dimensions of the packing head and the hexagonal structure are the same. The whole body is beautiful, and simultaneously, the hexagonal wrenches of the same type can be used for screwing.

The hard sealing connecting piece for gas transmission is preferably a connecting piece made of stainless steel, and the surface of the connecting piece is plated with zinc, copper or aluminum. The hard joint 1 and the hard tightening head 3 can also be made of stainless steel, and the hard clamping ring 2 is made of copper and aluminum.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and the above embodiments and what is described in the specification are the principles of the present invention, and that there can be various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications all fall within the scope of the present invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The hard sealing connecting piece for gas conveying comprises a hard joint, a hard clamping ring capable of being inserted into a pipe penetrating cavity of the hard joint and a hard tightening head for pushing the hard clamping ring into the pipe penetrating cavity, and is characterized in that the pipe penetrating cavity in the hard joint comprises an upper cavity and a lower cavity, the upper cavity and the lower cavity are different in caliber size, the upper cavity and the lower cavity are communicated with each other, the inner diameter of the lower cavity is larger than that of the upper cavity, and an annular groove with a downward opening is formed in the lower end surface of the upper cavity;

2. The gas delivery hard seal connection of claim 1, wherein: the outer side wall of the annular groove is positioned in the vertical direction, the section of the inner side wall of the annular groove is in an inverted triangular shape, the top of the triangle is positioned below the annular groove, the distance between the outer surface of the inner side wall and the inner surface of the outer side wall is gradually increased from top to bottom, and the uppermost end of the outer surface of the inner side wall is abutted against the inner surface of the outer side wall; the inner diameter of the upper ring is gradually reduced from top to bottom.

3. The gas delivery hard seal connection of claim 2, wherein: the height of the inner side wall is smaller than that of the outer side wall.

4. The gas delivery hard seal connection of claim 1, wherein: the inner diameter of the middle ring is a variable inner diameter which is gradually increased, unchanged, gradually decreased, unchanged and gradually increased from top to bottom.

5. The gas delivery hard seal connection of claim 1, wherein: the hard clamping ring is divided into two parts along the vertical direction to form a left sub-clamping ring and a right sub-clamping ring, and the two sub-clamping rings can be opened and closed.

6. The gas delivery hard seal connection of claim 5, wherein: the hard clamping ring divides the side wall into two parts at the joint of the two sub-clamping rings to form an inner sub-connecting wall and an outer sub-connecting wall, wherein one sub-connecting wall is connected with the sub-clamping ring on one side, and the other sub-connecting wall is connected with the sub-clamping ring on the other side.

7. The gas delivery hard seal connection of claim 1, wherein: the outer surfaces of the upper chamber and the lower chamber are provided with external threads, the inner surface of the upper chamber is provided with internal threads, and the hard tightening head is screwed on the hard joint through the threads.

8. The gas delivery hard seal connection of claim 1, wherein: the hard joint is sleeved with a hexagonal structure for assisting screwing, and the hexagonal structure is fixedly connected with the hard joint.

9. The gas delivery hard seal connection of claim 8, wherein: the hexagonal structure is located at the joint of the upper chamber and the lower chamber.

10. The gas delivery hard seal connection of claim 8, wherein: the outer contour of the tightening head is hexagonal.