CN216447658U

CN216447658U - Rotatable spacing formula connection structure

Info

Publication number: CN216447658U
Application number: CN202123441119.7U
Authority: CN
Inventors: 张栋; 王鹏; 吴冬冬
Original assignee: Weihai Guangtai Airport Equipment Co Ltd
Current assignee: Weihai Guangtai Airport Equipment Co Ltd
Priority date: 2021-12-31
Filing date: 2021-12-31
Publication date: 2022-05-06
Anticipated expiration: 2031-12-31

Abstract

The utility model provides a rotatable limiting type connecting structure which is provided with a rotatable straight pipe flange and a fixed connecting flange, wherein the rotatable straight pipe flange is provided with a radial limiting part which is inserted into the fixed connecting flange and forms clearance fit with the fixed connecting flange; the inner periphery of the fixed connecting flange is provided with a friction ring II mounting groove, a friction ring II is arranged in the friction ring II mounting groove, and the friction ring II is in clearance fit with the radial limiting part. The utility model can be widely applied to the field of connecting pipe products.

Description

Rotatable spacing formula connection structure

Technical Field

The utility model relates to a connecting structure, in particular to a rotatable limiting type connecting structure.

Background

An aircraft sewage vehicle is a dedicated airport ground service facility that receives aircraft lavatory sewage and is capable of providing lavatory wash water to the aircraft. After the airplane lands on the ground, the sewage joint of the sewage truck is in butt joint with a sewage outlet on the airplane for sewage discharge, and sewage enters the sewage tank along a sewage pipe of the sewage truck. Sewage pipe one end and sewage articulate, and the other end is connected with sewage case sewage inlet, and current sewage inlet generally sets up at sewage case afterbody, and is fixed. Because the height of the airplane sewage discharge port above the ground is different, the curled sewage pipes have different pulling forms in the use process. The sewage pipe is easy to bend, even break and damage due to pulling at the connection and fixation part of the fixed sewage inlet, and the service life of the sewage pipe is shortened.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problems, the technical scheme adopted by the application is as follows: the rotatable limiting type connecting structure is provided with a rotatable straight pipe flange and a fixed connecting flange, wherein the rotatable straight pipe flange is provided with a radial limiting part, and the radial limiting part is inserted into the fixed connecting flange and forms clearance fit with the fixed connecting flange; the inner periphery of the fixed connecting flange is provided with a friction ring II mounting groove, a friction ring II is arranged in the friction ring II mounting groove, and the friction ring II is in clearance fit with the radial limiting part.

Preferably, two mounting grooves of the friction ring II are respectively positioned at two ends of the inner periphery of the fixed connecting flange; and the two friction ring II mounting grooves are internally provided with a friction ring II.

Preferably, the inner periphery of the fixed connecting flange is also provided with a sealing ring mounting groove, a sealing ring is arranged in the sealing ring mounting groove, and the sealing ring is matched with the rotatable straight pipe flange.

Preferably, the rotatable straight pipe flange is provided with a retainer ring mounting groove, the right side of the retainer ring mounting groove is a radial limiting part, and the left side of the retainer ring mounting groove is a rotation limiting part; the rotatable limiting type connecting structure is also provided with a stop block, the stop block is provided with a concave part, the stop block is fixedly connected with the fixed connecting flange, and the opening of the concave part faces the fixed connecting flange; and a check ring is arranged in the check ring mounting groove.

Preferably, all the cover is equipped with friction ring I on the left rotatory spacing portion of retaining ring and the radial spacing portion on right side, and two friction ring I all are located the depressed part.

Preferably, two fixed limiting bolts are arranged on the stop block, a rotary limiting column is arranged on the rotary limiting part, and the rotary limiting column is located between the two fixed limiting bolts.

Preferably, the included angle between the two fixed limiting bolts is alpha, and alpha is more than 0 degree and less than or equal to 120 degrees.

Preferably, the rotatable limiting type connecting structure is further provided with a connecting pipe, and the connecting pipe is fixedly connected with the rotatable straight pipe flange.

Preferably, a sealing gasket is arranged between the connecting pipe and the rotatable straight pipe flange.

The utility model has simple structure and convenient installation and operation; the sealing ring ensures reliable sealing between the rotatable straight pipe flange and the fixed connecting flange, prevents the structure of the check ring, the friction ring I and the like from being damaged by sewage left movement leakage, and ensures the service life of the structure; the stop block, the friction ring I and the check ring limit the axial displacement of the rotatable straight pipe flange together, and a certain degree of axial displacement is given to ensure that the flange is flexible and free to use; the fixed limit bolt and the rotary limit column ensure that the sewage inlet can rotate freely within a certain angle range so as to meet the use requirement, protect the sewage pipe and prolong the service life of the sewage pipe.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic sectional view of the sewage inlet of the present invention.

FIG. 3 is a schematic view of a rotatable straight pipe flange according to the present invention.

Fig. 4 is a schematic structural view of the fixed connection flange of the present invention.

Fig. 5 is a schematic view of the stopper of the present invention.

FIG. 6 is a schematic view showing the position of the inlet according to the present invention.

The symbols in the drawings illustrate that:

1. a connecting pipe; 2. a gasket;

3. a rotatable straight pipe flange; 301. rotating the limiting column; 302. a check ring mounting groove; 303. a radial position-limiting part; 304. a rotation limiting part;

4. a stopper; 401. a recessed portion;

5. a friction ring I;

6. fixing the connecting flange; 601. a sealing ring mounting groove; 602. a friction ring II is provided with a groove;

7. a friction ring II; 8. a seal ring; 9. a retainer ring; 10. and fixing the limit bolt.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application. The present invention will be described in detail with reference to the accompanying drawings.

As shown in fig. 1 and 2, the present invention is provided with a connecting pipe 1, a rotatable straight pipe flange 3, a stopper 4 and a fixed connecting flange 6, wherein a gasket 2 is provided between the connecting pipe 1 and the rotatable straight pipe flange 3, and the connecting pipe 1, the gasket 2 and the rotatable straight pipe flange 3 are fixedly connected by bolts. The fixed connecting flange 6 is fixed on the sewage tank, the stop block 4 is fixedly connected with the fixed connecting flange 6 through bolts, and the rotatable straight pipe flange 3 penetrates through the stop block 4 and the fixed connecting flange 6.

As shown in fig. 3, the rotatable straight pipe flange 3 is a circular cylindrical flange structure with an inner hole, a retainer ring mounting groove 302 is formed in the outer periphery of the rotatable straight pipe flange, a rotation limiting portion 304 is arranged on the left side of the retainer ring mounting groove 302, and a radial limiting portion 303 is arranged on the right side of the retainer ring mounting groove 302. The rotation-restricting portion 304 is provided with a rotation-restricting post 301.

As shown in fig. 4, the inner peripheral side wall of the fixed connecting flange 6 is provided with 2 sealing ring mounting grooves 601 and two friction ring ii mounting grooves 602, the two friction ring ii mounting grooves 602 are respectively arranged on the inner circumferences of the two ends of the fixed connecting flange 6, and the sealing ring mounting grooves 601 are arranged between the two friction ring ii mounting grooves 602.

The radial limit portion 303 of the rotatable straight pipe flange 3 is inserted into the fixed connection flange 6 and forms clearance fit therewith, so that the fixed connection flange 6 limits the rotatable straight pipe flange 3 in the radial direction. All transition or interference fit are equipped with friction ring II 7 in the II installation grooves of friction ring 602, also are clearance fit between two friction ring II 7 and the radial spacing portion 303. And friction ring II 7 is high rigidity metal construction, and the wearability is better, when rotatable straight tube flange 3 rotated, has prolonged its life.

The sealing ring 8 is arranged in the sealing ring mounting groove 601, the sealing ring 8 is matched with the rotatable straight pipe flange 3, and sewage in the sewage tank on the right side can be prevented from entering the structure on the left side to be polluted and damaged.

The stop block 4 is fixedly connected with the fixed connecting flange 6 through bolts. As shown in fig. 5, the stopper 4 is provided with a recess 401.

The recess 401 of the stop 4 opens towards the fixed connection flange 6. The retainer ring 9 is arranged in the retainer ring mounting groove 302 of the rotatable straight pipe flange 3, the friction rings I are sleeved on the left rotation limiting part 304 of the retainer ring 9 and the radial limiting part 303 on the right side of the retainer ring, and the two friction rings I are located in the concave part 401. The arrangement of the concave part 401 gives a certain axial movement amount to the rotatable straight pipe flange 3, and the convenient and flexible use of the rotatable straight pipe flange is ensured. The left friction ring I5 can be in contact with the bottom surface of the concave part 401 of the stop block 4, and the right friction ring I5 can be in contact with the end surface of the fixed connecting flange 6, so that the rotatable straight pipe flange 3 is axially limited. Friction ring I5 is the nylon materials, plays the cushioning effect when rotatable straight tube flange 3 axial displacement.

Two fixed limit bolts 10 are arranged in the bolts fixedly connected with the stop block 4 and the fixed connecting flange 6, and the rotary limit column 301 on the rotatable straight pipe flange 3 is positioned between the two fixed limit bolts 10. As shown in FIG. 6, the angle α between the two fixed limit bolts 10 is the angle at which the rotatable straight pipe flange 3 can rotate, and α is greater than 0 degree and less than or equal to 120 degrees. The existence of alpha can guarantee that the rotatable straight pipe flange 3 rotates together with the sewage pipe, and meanwhile, the maximum limitation of alpha avoids bending damage to the sewage pipe caused by overlarge rotation angle.

When in use, the sewage pipe is sleeved on the outer wall of the connecting pipe 1 and is fixed by the hose clamp. The user takes off sewage joint butt joint aircraft from aircraft sewage car, need drag the sewage pipe at this in-process and satisfy the operation requirement, and this uses novel contaminated water pipe to lead, and it is rotatory along the circumferencial direction, guarantees that the sewage pipe does not take place the phenomenon of bending, improves sewage pipe life.

The utility model can be used for the sewage tank of the airplane sewage vehicle and can be applied to other tank bodies needing connecting pipelines.

It should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, and are not to be construed as indicating or implying that the indicated device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. The above-mentioned embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present application and are intended to be included within the scope of the present application.

Claims

1. A rotatable limiting type connecting structure is provided with a rotatable straight pipe flange and is characterized by also being provided with a fixed connecting flange, wherein the rotatable straight pipe flange is provided with a radial limiting part which is inserted into the fixed connecting flange and forms clearance fit with the fixed connecting flange; the inner periphery of the fixed connecting flange is provided with a friction ring II mounting groove, a friction ring II is arranged in the friction ring II mounting groove, and the friction ring II is in clearance fit with the radial limiting part.

2. The rotatable limit type connecting structure according to claim 1, wherein two mounting grooves of the friction ring II are respectively arranged at two ends of the inner periphery of the fixed connecting flange; and the two friction ring II mounting grooves are internally provided with a friction ring II.

3. The rotatable limit type connecting structure according to claim 1, wherein the inner periphery of the fixed connecting flange is further provided with a sealing ring mounting groove, a sealing ring is arranged in the sealing ring mounting groove, and the sealing ring is matched with the rotatable straight pipe flange.

4. The rotatable limit type connecting structure according to claim 1, wherein the rotatable straight pipe flange is provided with a retainer ring mounting groove, the right side of the retainer ring mounting groove is the radial limit portion, and the left side is the rotation limit portion; the rotatable limiting type connecting structure is also provided with a stop block, the stop block is provided with a concave part, the stop block is fixedly connected with the fixed connecting flange, and the opening of the concave part faces the fixed connecting flange; and a check ring is arranged in the check ring mounting groove.

5. The rotatable limit type connecting structure as claimed in claim 4, wherein friction rings I are sleeved on the rotation limiting part on the left side of the retainer ring and the radial limiting part on the right side of the retainer ring, and the two friction rings I are located in the recessed part.

6. The rotatable limit type connection structure of claim 4, wherein the stop block is provided with two fixed limit bolts, the rotation limit portion is provided with a rotation limit post, and the rotation limit post is located between the two fixed limit bolts.

7. The rotatable limit type connecting structure according to claim 6, wherein the included angle between the two fixed limit bolts is alpha, and alpha is more than 0 degree and less than or equal to 120 degrees.

8. The rotatable limit type connection structure of claim 1, wherein the rotatable limit type connection structure is further provided with a connection pipe, and the connection pipe is fixedly connected with the rotatable straight pipe flange.

9. The rotatable limit type connection structure according to claim 8, wherein a sealing gasket is arranged between the connection pipe and the rotatable straight pipe flange.