CN215410774U

CN215410774U - Check expansion joint for valve

Info

Publication number: CN215410774U
Application number: CN202121258876.8U
Authority: CN
Inventors: 王�锋; 徐永芳
Original assignee: Shanghai Lorenz Water Treatment Technology Center; Shanghai Zhanhe Fluid Control Technology Co ltd
Current assignee: Shanghai Lorenz Water Treatment Technology Center; Shanghai Zhanhe Fluid Control Technology Co ltd
Priority date: 2021-06-07
Filing date: 2021-06-07
Publication date: 2022-01-04
Anticipated expiration: 2031-06-07

Abstract

The utility model discloses a check expansion joint for a valve, which comprises a check valve, a first expansion pipe and a second expansion pipe, wherein the first expansion pipe and the second expansion pipe are positioned at two ends of the check valve, two ends of the check valve extend into the first expansion pipe and the second expansion pipe, threaded rods are arranged at the inner sides of the first expansion pipe and the second expansion pipe, the threaded rods are welded at the inner sides of the first expansion pipe and the second expansion pipe, a bidirectional threaded barrel is arranged at the middle position of the threaded rods, and the threaded rods are rotatably arranged in the bidirectional threaded barrel. According to the utility model, the threaded rod extends into or out of the bidirectional threaded cylinder by rotating the bidirectional threaded cylinder in the forward direction or the reverse direction, so that the distance between the first telescopic pipe and the second telescopic pipe is adjusted, and the telescopic effect is achieved.

Description

Check expansion joint for valve

Technical Field

The utility model relates to the technical field of valve expansion joints, in particular to a check expansion joint for a valve.

Background

The expansion joint can also be called a pipeline expansion joint, a compensator or an expansion joint. The expansion joint is divided into a corrugated expansion joint, a sleeve expansion joint, a square natural compensation expansion joint and the like, wherein the corrugated expansion joint is commonly used, the existing expansion joint is generally a metal corrugated pipe, but the metal corrugated pipe is damaged after being used for a long time, and the service life of the expansion joint is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a non-return expansion joint for a valve, which aims to solve the problem that a metal corrugated pipe is damaged after being used for a long time, and the service life of the expansion joint is influenced.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a contrary telescopic joint for valve, includes that check valve, first flexible pipe and the flexible pipe of second are located check valve both ends position, the check valve both ends are stretched into first flexible pipe and the flexible intraduct of second, the flexible intraductal side of first flexible pipe and second is provided with the threaded rod, the threaded rod welding is at the first flexible intraductal side position of stretching out and drawing back of pipe and second, the threaded rod intermediate position is provided with a two-way screw thread section of thick bamboo, the threaded rod is rotatory to be installed inside a two-way screw thread section of thick bamboo.

Preferably, the middle position of the bidirectional threaded cylinder is provided with a jack, and the jack penetrates through the bidirectional threaded cylinder.

Preferably, the threaded rod is provided with a limiting plate at the bottom end of the inner section of the bidirectional threaded cylinder, and the limiting plate is welded at the bottom end of the threaded rod.

Preferably, a protective sleeve is arranged between the first telescopic pipe and the second telescopic pipe, and two ends of the protective sleeve are adhered to the position between the first telescopic pipe and the second telescopic pipe through adhesive glue.

Preferably, the two ends of the check valve are embedded into the two ends of the inner sections of the first telescopic pipe and the second telescopic pipe, and the limiting blocks are welded at the two ends of the check valve.

Preferably, a sealing ring is arranged at the inner side of the joint of one end of the first telescopic pipe and one end of the second telescopic pipe and the check valve, and the sealing ring is adhered to the two ends of the check valve through an adhesive.

Compared with the prior art, the utility model has the beneficial effects that:

1. the threaded rod extends into or out of the bidirectional threaded cylinder by rotating the bidirectional threaded cylinder in the forward direction or the reverse direction, so that the distance between the first telescopic pipe and the second telescopic pipe is adjusted, and the telescopic effect is achieved;

2. the sealing ring is arranged for improving the sealing property between the first telescopic pipe and the check valve and between the second telescopic pipe and the check valve, so that the phenomenon that the joint of the check valve and the first telescopic pipe and the second telescopic pipe is deflated during use is avoided;

3. the limiting block is arranged for limiting the moving range of the first telescopic pipe and the second telescopic pipe, so that the phenomenon that the first telescopic pipe and the second telescopic pipe are separated from the check valve when the telescopic pipe is used is avoided;

4. the setting of lag is used for protecting the check valve, avoids the check valve to receive the corruption when using, influences the life of check valve.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model. In the drawings:

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

FIG. 2 is a schematic view of the internal structure of the present invention;

fig. 3 is a schematic structural view of the bidirectional threaded cylinder of the present invention.

In the figure: 1. a first telescopic tube; 2. a bidirectional threaded barrel; 3. a protective sleeve; 4. a second telescopic tube; 5. a limiting block; 6. a check valve; 7. a jack; 8. a threaded rod; 9. a limiting plate; 10. and (5) sealing rings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, fig. 2, and fig. 3, in an embodiment of the present invention, a check expansion joint for a valve includes a check valve 6, a first expansion pipe 1, and a second expansion pipe 4: the first telescopic pipe 1 and the second telescopic pipe 4 are located at two ends of the check valve 6, two ends of the check valve 6 extend into the first telescopic pipe 1 and the second telescopic pipe 4, threaded rods 8 are arranged on the inner sides of the first telescopic pipe 1 and the second telescopic pipe 4, the threaded rods 8 are welded at the inner sides of the first telescopic pipe 1 and the second telescopic pipe 4, a two-way threaded cylinder 2 is arranged in the middle of each threaded rod 8, and the threaded rods 8 are rotatably installed inside the two-way threaded cylinder 2.

Further, 2 intermediate positions of a two-way screw thread section of thick bamboo are provided with jack 7, and jack 7 runs through a two-way screw thread section of thick bamboo 2, and it is inside that the setting up of jack 7 makes things convenient for the metal pole embedding to be convenient for rotate a two-way screw thread section of thick bamboo 2.

Further, threaded rod 8 is located the inside section bottom position of two-way screw section of thick bamboo 2 and is provided with limiting plate 9, and limiting plate 9 welds in threaded rod 8 bottom position, and limiting plate 9 sets up the home range that is used for restricting threaded rod 8.

Further, be provided with lag 3 between the flexible pipe 4 of first flexible pipe 1 and second, and lag 3 both ends are pasted through the adhesive tape and are put between the flexible pipe 4 of first flexible pipe 1 and second, and setting up of lag 3 is used for protecting check valve 6, avoids check valve 6 to receive the corruption when using, influences check valve 6's life.

Further, 6 both ends embedding first flexible pipe 1 and the flexible pipe 4 inside section both ends of second of check valve 6 are provided with stopper 5, and stopper 5 welding is in 6 both ends positions of check valve, and stopper 5's setting is used for restricting the home range of first flexible pipe 1 and the flexible pipe 4 of second, avoids the first flexible pipe 1 and the flexible pipe 4 phenomenon that breaks away from check valve 6 of second when using.

Further, the sealing rings 10 are arranged at the inner side positions of the joints of the first telescopic pipe 1 and the second telescopic pipe 4 and the check valve 6, the sealing rings 10 are adhered to the two ends of the check valve 6 through adhesive glue, the sealing rings 10 are arranged to increase the sealing performance between the first telescopic pipe 1 and the second telescopic pipe 4 and the check valve 6, and the phenomenon that the joints of the check valve 6 and the first telescopic pipe 1 and the second telescopic pipe 4 leak when in use is avoided.

The working principle and the using process of the utility model are as follows: the first telescopic pipe 1 and the second telescopic pipe 4 are sleeved on the upper side of the check valve 6, and the threaded rod 8 extends into or extends out of the two-way threaded cylinder 2 through the forward or reverse rotation of the two-way threaded cylinder 2, so that the distance between the first telescopic pipe 1 and the second telescopic pipe 4 is adjusted, and the telescopic effect is achieved.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that various changes, modifications and substitutions can be made without departing from the spirit and scope of the utility model as defined by the appended claims. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A check expansion joint for a valve comprises a check valve (6), a first expansion pipe (1) and a second expansion pipe (4); the method is characterized in that: first flexible pipe (1) and the flexible pipe of second (4) are located check valve (6) both ends position, check valve (6) both ends are stretched into inside first flexible pipe (1) and the flexible pipe of second (4), the flexible pipe of first flexible pipe (1) and second (4) inboard is provided with threaded rod (8), threaded rod (8) welding is in the flexible pipe of first flexible pipe (1) and second (4) inboard position, threaded rod (8) intermediate position is provided with two-way screw thread section of thick bamboo (2), threaded rod (8) rotation is installed inside two-way screw thread section of thick bamboo (2).

2. The non-return telescopic joint for the valve according to claim 1, characterized in that: the middle position of the bidirectional threaded cylinder (2) is provided with an insertion hole (7), and the insertion hole (7) penetrates through the bidirectional threaded cylinder (2).

3. The non-return telescopic joint for the valve according to claim 1, characterized in that: the threaded rod (8) is located the inside section bottom position of two-way screw thread section of thick bamboo (2) and is provided with limiting plate (9), and limiting plate (9) welding is in threaded rod (8) bottom position.

4. The non-return telescopic joint for the valve according to claim 1, characterized in that: a protective sleeve (3) is arranged between the first telescopic pipe (1) and the second telescopic pipe (4), and two ends of the protective sleeve (3) are adhered between the first telescopic pipe (1) and the second telescopic pipe (4) through adhesive glue.

5. The non-return telescopic joint for the valve according to claim 1, characterized in that: the two ends of the check valve (6) are embedded into the two ends of the inner sections of the first telescopic pipe (1) and the second telescopic pipe (4), and the limiting blocks (5) are welded at the two ends of the check valve (6).

6. The non-return telescopic joint for the valve according to claim 1, characterized in that: a sealing ring (10) is arranged at the inner side of the joint of one end of the first telescopic pipe (1) and one end of the second telescopic pipe (4) and the check valve (6), and the sealing ring (10) is adhered to the two ends of the check valve (6) through an adhesive.