CN213839963U

CN213839963U - Novel clamp type positive and negative pressure flexible joint

Info

Publication number: CN213839963U
Application number: CN202022549277.3U
Authority: CN
Inventors: 陈立志
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-11-06
Filing date: 2020-11-06
Publication date: 2021-07-30
Anticipated expiration: 2030-11-06

Abstract

The utility model belongs to the technical field of the pipe connection structure. A novel clamp type positive and negative pressure flexible joint is used for sealing connection between two pipelines and comprises a sealing sleeve, an outer sleeve, a hoop and a counter pull rod, wherein the outer sleeve is sleeved outside the sealing sleeve in a matching manner; two groups of hoops are respectively arranged at two end parts of the outer sleeve, the pipeline is provided with a limiting ring, and the end parts of the hoops are provided with clamping grooves corresponding to the limiting ring; the counter-pull rod is arranged between the two hoops, and a compression spring is arranged between at least one end of the counter-pull rod and the corresponding hoop; the two ends of the sealing sleeve are respectively provided with a first sealing ring with an oval cross section, a first pressure cavity is arranged in the first sealing ring in a matched mode, and a first injection port is arranged on the side wall of the first pressure cavity. This application structural design is reasonable, can realize axial and radial flexible volume compensation, ensures connection structure's sealing performance, ensures the sealing member simultaneously and keeps good performance after the assembly is accomplished.

Description

Novel clamp type positive and negative pressure flexible joint

Technical Field

The utility model belongs to the technical field of the pipe connection structure, concretely relates to novel positive negative pressure flexible joint of clamp formula.

Background

The pipeline is widely applied to multiple industries and fields, is widely applied to the fields of water supply, water drainage, heat supply, gas supply, long-distance petroleum and natural gas transmission, agricultural irrigation, hydraulic engineering and the like. The existing pipeline connection mostly adopts ferrule type connection, hot melt type connection, clamping type connection and the like, however, the connection mode is often influenced by factors such as temperature and pressure due to different pipeline materials, so that the connection sealing performance is poor, the service life of the pipeline is short, the maintenance frequency is high, and serious potential safety hazards occur due to the fact that the pipeline sealing performance is damaged seriously.

The existing pipeline connecting structures can realize axial and radial compensation of pipeline connecting parts, but due to the fact that the structural design is unreasonable, the whole structure is in a destructive extrusion sealing state after installation is completed, and in the long-term use process, the performance of a sealing element can be damaged irreparably, so that the sealing structure is invalid, the replacement cost and the maintenance frequency are increased, and the effective operation of a whole pipeline conveying system is not utilized.

Disclosure of Invention

The utility model aims at the problem that the aforesaid exists and not enough, provide a novel clamp formula positive negative pressure flexible joint, its structural design is reasonable, can realize axial and radial flexible volume compensation, guarantee connection structure's sealing performance, guarantee the sealing member simultaneously and keep good performance after the assembly is accomplished.

In order to realize the purpose, the adopted technical scheme is as follows:

a novel clamp type positive and negative pressure flexible joint for sealing connection between two pipelines comprises:

sealing sleeves;

the outer sleeve is sleeved outside the sealing sleeve in a matching manner;

the two groups of hoops are respectively arranged at two end parts of the outer sleeve, the pipeline is provided with a limiting ring, and the end part of the hoop is provided with a clamping groove corresponding to the limiting ring; and

the opposite pull rod is arranged between the two hoops, and a compression spring is arranged between at least one end of the opposite pull rod and the corresponding hoop;

the two ends of the sealing sleeve are respectively provided with a first sealing ring with an oval cross section, a first pressure cavity is arranged in the first sealing ring in a matched mode, and a first injection port is arranged on the side wall of the first pressure cavity.

According to the utility model discloses positive negative pressure flexible joint of clamp formula, preferably, the cover liner inlays and is equipped with metal casing, cover liner and metal casing's both ends are the type of falling V structure, the outer tube with be provided with on the staple bolt with the type of falling V indent that cover liner and metal casing correspond.

According to the utility model discloses flexible joint of positive negative pressure of clamp formula, preferably, two be provided with the unit of rectifying between the pipeline, the unit of rectifying includes:

the action ring is sleeved at the end part of the pipeline in a matching way, and the outer end of the action ring is arc-shaped; and

the deviation rectifying ring is arranged between the two pipelines, the two sides of the deviation rectifying ring are provided with deviation rectifying grooves corresponding to the action rings, and the action rings are embedded in the deviation rectifying grooves in a matching manner;

the action ring and the deviation rectifying ring are made of rubber materials.

According to the utility model discloses flexible joint of positive negative pressure of clamp formula, preferably, the intra-annular of rectifying is inlayed and is equipped with the muscle ring that the cross-section is "worker" style of calligraphy, each side of muscle ring all is the horn mouth structure.

According to the utility model discloses flexible joint of positive negative pressure of clamp formula, preferably, the middle part of seal cover is provided with the second pressure chamber, the second pressure chamber with the ring of rectifying corresponds the setting from top to bottom, the lateral part of second pressure chamber is provided with the second and annotates the pressure port.

According to the utility model discloses flexible joint of positive negative pressure of clamp formula, preferably, first notes press the port with the second is annotated and is pressed all to be provided with the control valve on the port.

According to the utility model discloses flexible joint of positive negative pressure of clamp formula, preferably, the staple bolt includes:

a first clamping piece;

the first clamping piece and the second clamping piece are both in a semi-arc shape, and are provided with corresponding connecting plates which are fixedly connected through bolts;

the lower sides of the first clamping piece and the second clamping piece are provided with two clamping groove plates, and the limiting ring is arranged between the two clamping groove plates in a matching mode.

By adopting the technical scheme, the beneficial effects are as follows:

this application overall structure reasonable in design, it is through the structural design to the seal cover, has realized the structural seal at both ends, simultaneously through the design to first pressure chamber, can avoid the sealing ring to bear destructive extrusion, can be through the grease of pouring into corresponding pressure into in first pressure chamber, realize carrying out the adjustment of adaptability to its sealing performance, can avoid the sealing ring to suffer not recovering original destruction when guaranteeing the sealed effect of whole structure.

This application can make two pipelines obtain corresponding rectifying in axial and radial displacement compensation process through the structural design to rectifying the ring, avoids the pipeline to take place direct contact, and then leads to the tearing problem of pipeline to take place for it can eliminate the displacement deviation because of external environment's effect leads to through rectifying the ring, optimizes the atress structure between two pipelines.

This application outer tube, staple bolt, to the design of pull rod, can fix and retrain whole seal structure for it can satisfy sealed and displacement compensation in certain extent, avoids taking place the ruptured problem of pipeline interface, makes the whole assembly more convenient, and each part atress performance is better, realizes functions such as compensation, rectifying through the structural feature of each part self.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments of the present invention will be briefly described below. The drawings are intended to depict only some embodiments of the invention, and not all embodiments of the invention are limited thereto.

Fig. 1 is a schematic sectional structural view of a novel clamp type positive and negative pressure flexible joint according to the embodiment of the present invention.

Fig. 2 is a schematic structural diagram of the novel clamp type positive and negative pressure flexible joint according to the embodiment of the present invention.

Fig. 3 is a schematic diagram of a partially enlarged structure of the novel clamp type positive and negative pressure flexible joint according to the embodiment of the present invention.

Number in the figure:

110 is a sealing sleeve, 111 is a sealing ring, 112 is a first pressure cavity, 113 is a first injection port, 120 is a metal sleeve, 130 is a second pressure cavity, and 131 is a second carious port;

200 is an outer sleeve;

300 is a hoop, 301 is a slot plate, 302 is a connecting plate, 303 is a bolt;

400 is a pipeline, 401 is a limit ring;

510 is an error correction ring, 511 is a tendon ring, and 520 is an action ring;

600 is a counter pull rod, 601 is a compression spring.

Detailed Description

The embodiments of the present invention will be described more fully hereinafter with reference to the accompanying drawings, in which embodiments of the invention are shown. Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by those of ordinary skill in the art.

In the description of the present invention, it is to be understood that the terms "first," "second," and the like are used for describing various elements of the present invention, and do not denote any order, quantity, or importance, but rather are used to distinguish one element from another.

It should be noted that when an element is referred to as being "connected," "coupled," or "connected" to another element, it can be directly connected, coupled, or connected, but it is understood that intervening elements may be present therebetween; i.e., positional relationships encompassing both direct and indirect connections.

It should be noted that the use of the terms "a" or "an" and the like do not necessarily denote a limitation of quantity. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items.

It should be noted that terms indicating orientation or positional relationship such as "upper", "lower", "left", "right", and the like, are used only for indicating relative positional relationship, which is for convenience of describing the present invention, and not that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation; when the absolute position of the object to be described is changed, the relative positional relationship may also be changed accordingly.

Referring to fig. 1-3, the present application discloses a novel clamp type positive and negative pressure flexible joint for sealing connection between two pipes, which comprises a sealing sleeve 110, an outer sleeve 200, a hoop 300 and a tie rod 600, wherein the outer sleeve 200 is sleeved outside the sealing sleeve 110 in a matching manner; the two groups of hoops 300 are respectively arranged at two end parts of the outer sleeve 200, the pipeline 400 is provided with a limiting ring 401, and the end part of the hoop 300 is provided with a clamping groove corresponding to the limiting ring 401; the opposite pull rod 600 is arranged between the two hoops 300, and a compression spring 601 is arranged between at least one end of the opposite pull rod 600 and the corresponding hoop 300; the two ends of the sealing sleeve 110 are both provided with first sealing rings 111 with oval cross sections, a first pressure cavity 112 is arranged in the first sealing rings 111 in a matching manner, and a first injection port 113 is arranged on the side wall of the first pressure cavity 112.

Preferably, the metal sleeve 120 is embedded in the sealing sleeve 110 in this embodiment, two ends of the sealing sleeve 110 and the metal sleeve 120 are in an inverted V-shaped structure, and the outer sleeve 200 and the anchor ear 300 are provided with inverted V-shaped pressing grooves corresponding to the sealing sleeve 110 and the metal sleeve 120. Through the design of above-mentioned structure, can realize the restraint and spacing of seal cover for it can and the pipeline between form stable in structure's sealing performance, and make outer tube and seal cover all have axial and radial compensation displacement function.

In order to further improve the structural stability, a deviation rectifying unit is arranged between the two pipelines, the deviation rectifying unit comprises an action ring 520 and a deviation rectifying ring 510, the action ring 520 is sleeved at the end part of the pipeline 400 in a matching mode, and the outer end of the action ring 520 is arc-shaped; the deviation rectifying ring 510 is arranged between the two pipelines 400, the two sides of the deviation rectifying ring 510 are provided with deviation rectifying grooves corresponding to the action rings, and the action rings are embedded in the deviation rectifying grooves in a matching way; the action ring and the deviation rectifying ring are made of rubber materials.

The correcting ring is internally embedded with a rib ring 511 with an I-shaped section, and each side surface of the rib ring 511 is of a horn mouth structure. Corresponding to the structure, the middle part of the sealing sleeve is provided with a second pressure cavity 130, the second pressure cavity 130 and the deviation correcting ring are arranged up and down correspondingly, and the side part of the second pressure cavity 130 is provided with a second injection port 131.

The first injection port and the second injection port are both provided with control valves, one-way valves can be adopted, and control valves with pressure gauges can also be adopted to monitor the structure to a certain degree.

In this embodiment, the hoop 300 includes a first clamping piece and a second clamping piece, both of which are semi-arc-shaped, and the first clamping piece and the second clamping piece are provided with corresponding connecting plates 302 and are connected and fixed by bolts 303; the downside of first centre gripping piece and second centre gripping piece all is provided with two draw-in groove boards 301, and spacing ring 401 matches the setting between two draw-in groove boards 301.

While the above description has described in detail the preferred embodiments for carrying out the invention, it should be understood that these embodiments are presented by way of example only, and are not intended to limit the scope, applicability, or configuration of the invention in any way. The scope of the invention is defined by the appended claims and equivalents thereof. Many modifications may be made to the foregoing embodiments by those skilled in the art in light of the teachings of the present disclosure, and such modifications are intended to be within the scope of the present disclosure.

Claims

1. A novel clamp type positive and negative pressure flexible joint is used for sealing connection between two pipelines and is characterized by comprising:

sealing sleeves;

the outer sleeve is sleeved outside the sealing sleeve in a matching manner;

2. The novel clamp type positive-negative pressure flexible joint as claimed in claim 1, wherein a metal sleeve is embedded in the sealing sleeve, two ends of the sealing sleeve and the metal sleeve are of inverted V-shaped structures, and inverted V-shaped press grooves corresponding to the sealing sleeve and the metal sleeve are arranged on the outer sleeve and the anchor ear.

3. The novel clamp type positive-negative pressure flexible joint as claimed in claim 1, wherein a deviation rectifying unit is arranged between the two pipelines, and the deviation rectifying unit comprises:

the action ring and the deviation rectifying ring are made of rubber materials.

4. The novel clamp type positive-negative pressure flexible joint as claimed in claim 3, wherein the deviation correcting ring is internally embedded with a rib ring with an I-shaped cross section, and each side surface of the rib ring is in a bell mouth structure.

5. The novel clamp type positive-negative pressure flexible joint as claimed in claim 3 or 4, wherein a second pressure cavity is arranged in the middle of the sealing sleeve, the second pressure cavity and the deviation correcting ring are arranged in an up-and-down corresponding manner, and a second injection port is arranged on the side of the second pressure cavity.

6. The novel clamp type positive and negative pressure flexible joint as claimed in claim 5, wherein a control valve is provided on each of said first and second injection ports.

7. The novel clamp type positive and negative pressure flexible joint as claimed in claim 1, wherein the clamp comprises:

a first clamping piece;