CN211624469U - Straight-through joint body - Google Patents

Abstract

The utility model discloses a direct joint body relates to the hardware, aims at solving direct joint body connectivity and the not good problem of leakproofness, and its technical scheme main points are: a straight-through joint body sequentially comprises an end section, a shoulder section, a hexagonal prism section and a tail section which are fixedly connected with each other and coaxial, wherein end threads and tail threads are respectively arranged on the peripheral walls of the end section and the tail section, through grooves for fluid to penetrate through are formed in the end section, the shoulder section, the hexagonal prism section and the tail section, an annular groove is formed in one side, close to the tail section, of the hexagonal prism section, internal threads are arranged on the side wall of the annular groove, the inner diameter of the annular groove is larger than the inner diameter of the tail threads, and the thread pitch of the internal threads is an integral multiple of the thread pitch. The utility model discloses has zonulae occludens's effect.

Description

Straight-through joint body

Technical Field

The utility model relates to a hardware, more specifically say, it relates to a inseparabler through of connectivity connects the body.

Background

The straight joint body is a connecting piece for connecting two connecting pipes, and usually the straight joint body is composed of a hexagonal prism section for rotation and two thread sections for connecting the connecting pipes, and because the fluid in the two connecting pipes is connected and transported through the straight joint body, the strong sealing property of connection is an important index for preventing the fluid from overflowing, but the conventional straight joint usually carries out threaded connection between the internal thread of the connecting pipe and the external thread of the straight joint body, and because the flowing fluid has kinetic energy, the long-time transportation can lead the connecting pipe to be connected with the straight joint body loosely, even lead the connecting pipe to be separated from the straight joint body, thereby influencing the service performance of the straight joint body.

Therefore, a new solution is needed to solve this problem.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a not enough to prior art exists, the utility model aims to provide a direct joint body has the internal screw thread annular through offering at the lateral wall of rotating head for the connecting pipe more closely is connected with the direct joint body.

The above technical purpose of the present invention can be achieved by the following technical solutions: a straight-through joint body sequentially comprises an end section, a shoulder section, a hexagonal prism section and a tail section which are fixedly connected with each other and coaxial, wherein end threads and tail threads are respectively arranged on the peripheral walls of the end section and the tail section, through grooves for fluid to penetrate through are formed in the end section, the shoulder section, the hexagonal prism section and the tail section, an annular groove is formed in one side, close to the tail section, of the hexagonal prism section, internal threads are arranged on the side wall of the annular groove, the inner diameter of the annular groove is larger than the inner diameter of the tail threads, and the thread pitch of the internal threads is an integral multiple of the thread pitch.

Through adopting above-mentioned technical scheme, through seting up the annular that has the internal screw thread on the lateral wall at hexagonal prism section, simultaneously because offer respectively on the interior lateral wall of connecting pipe be used for with tail screw thread and female connection's pipe thread, thereby make the connecting pipe can also carry out threaded connection with the internal thread on the hexagonal prism section after connecting on the tail screw thread, thereby make the lateral wall of connecting pipe always between internal thread and tail screw thread, and then be difficult for making the connecting pipe drop under tail screw thread and the internal screw thread simultaneous connection, because multilayer connection's reason, also further guarantee to be located the fluid of leading to the inslot and leak through the junction, the leakproofness has been increased.

The utility model discloses further set up to: the inner diameter of the shoulder section is between the end section and the hexagonal prism section, one side of the end section, which is close to the shoulder section, is provided with a first groove, and a rubber ring is arranged in the first groove.

Through adopting above-mentioned technical scheme, through setting up the recess that is used for holding the rubber circle one, realize the spacing effect to the rubber circle, prevent that the rubber circle from sliding on the periphery wall of section, through setting up the shoulder section for the connecting pipe of being connected with the section can be supported through the rubber circle completely and press on the lateral wall of shoulder section, realize better support and press and sealed effect.

The utility model discloses further set up to: one side of the tail section close to the hexagonal prism section is provided with a second groove in arc transition, and the included angle alpha between the second groove and the tail section is thirty-five degrees.

By adopting the technical scheme, the second groove with the included angle alpha of thirty-five degrees is arranged on the tail section, so that a gap exists between the connecting pipe connected with the tail section and the tail section positioned at the second groove, and the connecting pipe is convenient to be screwed into the ring groove and is simultaneously favorable for realizing the balanced stress of the threads on the inner wall and the outer wall of the connecting pipe and the tail threads and the internal thread connection respectively.

The utility model discloses further set up to: the through groove comprises a first through hole and a second through hole which are communicated with each other, the second through hole is located in the tail section, the inner diameter of the second through hole is larger than that of the first through hole, and the inner diameter of the second through hole is gradually reduced from one side close to the tail section to one side far away from the tail section.

Through adopting above-mentioned technical scheme, through establishing logical groove into unchangeable through-hole one of internal diameter and through-hole two that the internal diameter reduces gradually for the fluid that leads to the inslot slows down the velocity of flow of fluid in the internal diameter grow in through-hole two inflow after through-hole one, thereby can play the cushioning effect to having pressure fluid, reduces fluidic leakage and excessive.

The utility model discloses further set up to: the outer wall of the ring groove is fixedly connected with an embedded block with internal threads, the embedded block is in a ring shape, the inner diameter of the embedded block is larger than that of the ring groove, and a gap for connecting the threads of the pipe exists between the embedded block and the ring groove.

Through adopting above-mentioned technical scheme, through the setting have the internal screw thread abaculus for abaculus fixed connection is an optimization in the annular, through adding the abaculus in the annular, thereby conveniently to the processing of whole through connection head body, and then makes things convenient for mass production.

The utility model discloses further set up to: the outer surfaces of the end section, shoulder section, hexagonal prism section and tail section are coated with a catalytic nickel phosphorous coating.

By adopting the technical scheme, the outer surface of the straight joint body is sprayed by the nickel-phosphorus plating ENP process, so that the characteristics of uniformity and brightness of the surface of the straight joint body are realized, and meanwhile, the catalytic nickel-phosphorus coating has six advantages of high uniformity, high bonding strength, high wear resistance, high corrosion resistance, no plating leakage defect and excellent simulation, can meet the size requirement of a complex precise part and simultaneously plays a role in protecting the straight joint body, so that the service life of the whole body is prolonged.

To sum up, the utility model discloses following beneficial effect has:

1. the side surface of the hexagonal prism section is embedded with the embedded block with the internal thread, and the inner wall and the outer wall of the connecting pipe are in threaded connection with the straight-through joint body, so that the effect of tighter connection is realized;

2. through setting up the through-hole two that the internal diameter reduces gradually from the one side that is close to the tail section to the one side of keeping away from the tail section to fluid to leading to the inslot reaches the effect of buffering, and then effectively prevents that the fluid from spilling over because of inside and outside pressure differential.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a left side view of the present invention.

In the figure: 1. an end segment; 2. a shoulder section; 3. a hexagonal prism section; 4. a tail section; 5. a first groove; 6. a second groove; 7. a first through hole; 8. a second through hole; 9. end threads; 10. tail threads; 11. a ring groove; 12. an internal thread.

Detailed Description

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

A straight-through joint body sequentially comprises an end section 1, a shoulder section 2, a hexagonal prism section 3 and a tail section 4 which are integrally formed and coaxial with each other, wherein the end section 1, the shoulder section 2 and the tail section 4 are all cylinders, the inner diameter of the shoulder section 2 is between the end section 1 and the hexagonal prism section 3, through grooves for fluid to penetrate through are formed in the end section 1, the shoulder section 2, the hexagonal prism section 3 and the tail section 4, the through grooves comprise a first through hole 7 and a second through hole 8 which are communicated with each other, the second through hole 8 is located in the tail section 4, the inner diameter of the second through hole is larger than that of the first through hole 7, the inner diameter of the second through hole 8 is gradually reduced from one side close to the tail section 4 to one side far away from the tail section 4, end threads 9 and tail threads 10 are respectively formed on the outer peripheral walls of the end section 1 and the tail section 4, one side close to the shoulder section 2 of the end section 1 is provided with a first groove 5, the first groove 5 is used for accommodating a rubber ring, one side, an included angle alpha between the second groove 6 and the tail section 4 is thirty-five degrees, the hexagonal prism section 3 is a hexagonal rotating head with the inner diameter larger than that of the end section 1 and the tail section 4, a ring groove 11 is formed in one side, close to the tail section 4, of the hexagonal prism section 3, an insert block with an internal thread 12 is welded on the outer wall of the ring groove 11, the insert block is in a circular ring shape, the inner diameter of the insert block is larger than that of the ring groove 11, a gap for connecting the connecting pipe in a threaded mode exists between the insert block and the ring groove 11, the inner diameter of the internal thread 12 is larger than that of the tail thread 10, the thread pitch of the internal thread 12 is integral multiple of that of the tail thread 10, the tail thread 10 and the internal thread 12 are used for being in threaded connection with one connecting pipe and are respectively in.

In the specific implementation, firstly, the hexagonal rotating head on the hexagonal prism section 3 is rotated by a wrench, the connecting pipe located at the end section 1 is connected by the end thread 9 in a threaded manner, during installation, the bottom end of the connecting pipe is completely pressed against the side, close to the end section 1, of the shoulder section 2 through the rubber ring in the groove one 5, and then the connecting pipe connected with the tail section 4 is connected to the tail section 4, and the method is as follows: firstly, aligning the threads on the inner wall of the connecting pipe with the tail threads 10, then axially feeding the connecting pipe by rotating the hexagonal rotating head, when the connecting pipe is fed to the joint of the second groove 6 and the hexagonal prism section 3, because the ring groove 11 is internally embedded with the insert block with the internal thread 12, and the insert block and the ring groove 11 have a gap for connecting the thread of the connecting pipe, continued rotation of the connector tube, causes the threads on the outer wall of the connector tube to threadedly engage the internal threads 12 on the insert, because the thread pitch of the internal thread 12 and the thread pitch of the tail thread 10 are integral multiples, the phenomenon of tooth clamping can not occur when the connecting pipe rotates, at the moment, the threads on the two sides of the inner wall and the outer wall of the connecting pipe are tightly connected with the tail thread 10 and the internal thread 12, when the connection pipe is installed, the bottom end of the connection pipe is seated in the ring groove 11, so that the connection pipe is tightly coupled with the straight joint body while increasing sealability.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims (6)

1. The utility model provides a straight joint body, includes mutual fixed connection and coaxial section (1), shoulder section (2), hexagonal prism section (3) and end section (4) in proper order, end screw thread (9) and tail screw thread (10) have been seted up on the periphery wall of section (1) and end section (4) respectively, its characterized in that: offer the logical groove that is used for the fluid to run through on section (1), shoulder section (2), hexagonal prism section (3) and back end (4), annular (11) have been seted up to one side that hexagonal prism section (3) are close to back end (4), be equipped with on the lateral wall of annular (11) internal thread (12), the internal diameter of annular (11) is greater than the internal diameter of tail screw thread (10), the pitch of internal thread (12) is the integral multiple of the pitch of tail screw thread (10).

2. A feed-through coupling body according to claim 1, wherein: the inner diameter of the shoulder section (2) is between the end section (1) and the hexagonal prism section (3), a first groove (5) is formed in one side, close to the shoulder section (2), of the end section (1), and a rubber ring is arranged in the first groove (5).

3. A feed-through coupling body according to claim 2, wherein: one side of the tail section (4) close to the hexagonal prism section (3) is provided with a second groove (6) in arc transition, and an included angle alpha between the second groove (6) and the tail section (4) is thirty-five degrees.

4. A feed-through coupling body according to claim 1, wherein: lead to the groove including through-hole one (7) and through-hole two (8) that communicate each other, through-hole two (8) are located tail section (4) and its internal diameter is greater than the internal diameter of through-hole one (7), the internal diameter of through-hole two (8) reduces gradually from one side of being close tail section (4) to the one side of keeping away from tail section (4).

5. A feed-through coupling body according to claim 1, wherein: fixedly connected with has the abaculus of internal thread (12) on the outer wall of annular (11), the abaculus is the ring form and its internal diameter is greater than the internal diameter of annular (11), there is the space that is used for connecting pipe threaded connection in abaculus and annular (11).

6. A feed-through coupling body according to claim 1, wherein: the outer surfaces of the end section (1), the shoulder section (2), the hexagonal prism section (3) and the tail section (4) are coated with catalytic nickel-phosphorus coatings.

Images