CN216643180U

CN216643180U - Check valve easy to install and maintain

Info

Publication number: CN216643180U
Application number: CN202121750641.0U
Authority: CN
Inventors: 谭国富
Original assignee: Jianhu Haohui Electricity Petrochemical Machinery Co ltd
Current assignee: Jianhu Haohui Electricity Petrochemical Machinery Co ltd
Priority date: 2021-07-29
Filing date: 2021-07-29
Publication date: 2022-05-31
Anticipated expiration: 2031-07-29

Abstract

The utility model relates to the field of check valve ports, and particularly discloses a check valve easy to install and maintain, which comprises a forged steel check valve, wherein material conveying pieces are arranged at two ends of the forged steel check valve, an expansion piece is arranged inside the material conveying pieces, a limiting sealing piece is arranged between the expansion piece and the material conveying pieces, and a fixing piece is arranged on the outer side of the expansion piece; the beneficial effects are that: the check valve easy to install and maintain is characterized in that the extension pipe is screwed in the port pipe, the extension pipe rotates along the port pipe to change the position until the end part of the extension pipe is inserted into the connecting pipelines at two sides, so that a connecting gap is avoided, and the forged steel check valve is convenient to disassemble after the extension pipe is retracted into the port pipe.

Description

Check valve easy to install and maintain

Technical Field

The utility model relates to the field of check valve ports, in particular to a check valve easy to install and maintain.

Background

The check valve is a valve with a circular valve clack and acts by self weight and medium pressure to block the medium from flowing backwards. It belongs to the automatic valve category, also called check valve, reflux valve or isolation valve. The valve clack motion mode is divided into lifting type and swing type. The lift check valve is similar in structure to the stop valve and only lacks a valve rod that drives the valve flap. The medium flows in from the inlet end (lower side) and flows out from the outlet end (upper side). The valve is opened when the inlet pressure is greater than the sum of the weight of the flap and its flow resistance. Otherwise, the valve is closed when the medium flows backwards. Swing check valves have a flap that is tilted and can rotate about an axis, and operate on a similar principle to lift check valves.

Among the prior art, the check valve passes through the ring flange and is connected with both sides pipe connection, when fixed two sets of ring flanges, easily leads to check valve and tip body dislocation skew, influences check valve installation effectiveness to check valve both sides pipeline interval is fixed, and it is very inconvenient to insert during loading and unloading check valve, the easy joint gap that appears.

SUMMERY OF THE UTILITY MODEL

The present invention has been made to solve the above-mentioned problems occurring in the prior art, and an object of the present invention is to provide a check valve which is easy to install and maintain.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides an easy installation maintenance's check valve, includes the forged steel check valve, the both ends of forged steel check valve all are provided with defeated material spare, the inside of defeated material spare is provided with the extensible member, be provided with spacing sealing member between extensible member and the defeated material spare, and the outside of extensible member is provided with the mounting.

Preferably, the conveying part comprises two groups of port pipes, the two groups of port pipes are symmetrically distributed about the forged steel check valve, and internal threads are arranged on the inner annular surface of each port pipe.

Preferably, the extensible member includes the extension pipe, and the outer annular surface of extension pipe is provided with the external screw thread, and the port pipe box is established in the outside of extension pipe, and port pipe and extension pipe spiro union.

Preferably, an introduction ring is arranged at the end part of the extension pipe, the introduction ring is in a truncated annular structure, and the inner ring caliber of the introduction ring is equal to that of the extension pipe.

Preferably, the check seal includes a sliding guide and a seal compensator.

Preferably, the sliding guide piece comprises a guide groove and a limiting ring which is connected inside the guide groove in a sliding manner, the guide groove is formed in the outer ring surface of the extension pipe, the limiting ring is fixed at the end of the port pipe, and the inner ring opening of the limiting ring is of a convex column structure.

Preferably, the sealing compensation piece comprises a sealing ring, and the sealing ring is fixed on the inner annular surface of the limiting ring.

Preferably, the fixing part comprises a flange plate and a preformed hole formed in the surface of the flange plate, the flange plate is sleeved on the outer side of the extension pipe, and the flange plate is located between the guide groove and the guide ring.

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

1. the check valve easy to install and maintain is characterized in that the extension pipe is screwed in the port pipe, the extension pipe rotates along the port pipe to realize position change until the end part of the extension pipe is inserted into the connecting pipelines at two sides, so that a connecting gap is avoided, and the forged steel check valve is convenient to disassemble after the extension pipe is retracted into the port pipe;

2. the check valve easy to install and maintain is provided with the guide groove on the outer ring surface of the extension pipe, the limiting ring slides along the guide groove to prevent the extension pipe from being separated from the port pipe, and the flange plate is arranged between the guide groove and the guide ring, so that the guide ring is inserted into the pipe bodies on two sides, and the forged steel check valve cannot fall off when the flange plate is fixed.

Drawings

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

FIG. 2 is a schematic view of the connection structure of the port pipe and the extension pipe of the present invention

Fig. 3 is an enlarged schematic view of a structure in fig. 2.

In the figure: forged steel check valve 1, port pipe 2, extension pipe 3, guide-in ring 4, ring flange 5, preformed hole 6, guide way 7, spacing ring 8, sealing washer 9, toggle handle 10.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below. The embodiments of the present invention, and all other embodiments obtained by a person of ordinary skill in the art without any inventive work, belong to the scope of protection of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: a check valve easy to install and maintain comprises a forged steel check valve 1, wherein material conveying parts are arranged at two ends of the forged steel check valve 1 and comprise port pipes 2, the port pipes 2 are arranged in two groups, the two groups of port pipes 2 are symmetrically distributed about the forged steel check valve 1, internal threads are arranged on the inner ring surface of each port pipe 2, an expansion part is arranged inside each material conveying part and comprises an extension pipe 3, external threads are arranged on the outer ring surface of each extension pipe 3, the port pipes 2 are sleeved on the outer sides of the extension pipes 3, the port pipes 2 are in threaded connection with the extension pipes 3, a guide-in ring 4 is arranged at the end part of each extension pipe 3, the guide-in ring 4 is in a table-shaped annular structure, the caliber of the inner ring of the guide-in ring 4 is equal to that of the caliber of the inner ring of each extension pipe 3, the forged steel check valve 1 is pushed between connecting rods at two sides, the distance of the extension pipes 3 extending out of the port pipes 2 is short at the moment, a stirring handle 10 is held, a rotating flange 5 drives the extension pipes 3 to rotate and extend out along the port pipes 2, until the end portions of the introduction ring 4 and the extension pipes 3 are inserted into the corresponding connection pipes and the flange 5 is aligned with the flanges of the end portions of the connection pipes, at which time the forged steel check valve 1 is supported by the extension pipes 3 at both ends so as not to fall down;

a limit sealing element is arranged between the expansion element and the conveying element, the limit sealing element comprises a sliding guide element and a sealing compensation element, the sliding guide element comprises a guide groove 7 and a limit ring 8 which is connected in the guide groove 7 in a sliding way, the guide groove 7 is arranged on the outer annular surface of the extension pipe 3, the limit ring 8 is fixed at the end part of the port pipe 2, the inner annular opening of the limit ring 8 is of a convex column body structure, the sealing compensation element comprises a sealing ring 9, the sealing ring 9 is fixed on the inner annular surface of the limit ring 8, and the outer side of the expansion piece is provided with a fixing piece which comprises a flange plate 5 and a preformed hole 6 arranged on the surface of the flange plate 5, the flange plate 5 is sleeved on the outer side of the extension pipe 3, and the flange plate 5 is positioned between the guide groove 7 and the guide-in ring 4, the flange plate 5 and the flange of the connecting pipe are fixed by bolts, and the sealing ring 9 is sleeved on the outer side of the guide groove 7 to play a sealing role.

The working principle is as follows: during the in-service use, push into forged steel check valve 1 between the connecting rod of both sides, the distance that extension pipe 3 stretches out port pipe 2 this moment is short, hold and stir handle 10 and rotate ring flange 5 and drive extension pipe 3 and rotate along port pipe 2 and stretch out, the tip that until leading-in ring 4 and extension pipe 3 inserts in the connecting pipe that corresponds, and ring flange 5 aligns with the flange of connecting pipe tip, forged steel check valve 1 is supported by extension pipe 3 at both ends this moment and can not fall, with the help of the bolt with the flange of ring flange 5 and connecting pipe fixed can, 9 covers of sealing washer establish and play sealed effect in the outside of guide way 7.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A check valve easy to install and maintain comprises a forged steel check valve (1) and is characterized in that: the forged steel check valve is characterized in that material conveying pieces are arranged at two ends of the forged steel check valve (1), telescopic pieces are arranged inside the material conveying pieces, limiting sealing pieces are arranged between the telescopic pieces and the material conveying pieces, and fixing pieces are arranged on the outer sides of the telescopic pieces.

2. An easy-to-install-maintain check valve as defined in claim 1, wherein: the conveying part comprises port pipes (2), the port pipes (2) are arranged in two groups, the two groups of port pipes (2) are symmetrically distributed about the forged steel check valves (1), and internal threads are arranged on the inner annular surface of each port pipe (2).

3. An easy to install and maintain check valve as defined in claim 2, wherein: the telescopic piece comprises an extension pipe (3), external threads are arranged on the outer annular surface of the extension pipe (3), the port pipe (2) is sleeved on the outer side of the extension pipe (3), and the port pipe (2) is in threaded connection with the extension pipe (3).

4. An easy to install and maintain check valve as defined in claim 3, wherein: the end part of the extension pipe (3) is provided with a lead-in ring (4), the lead-in ring (4) is of a table-shaped annular structure, and the caliber of an inner ring of the lead-in ring (4) is equal to that of an inner ring of the extension pipe (3).

5. An easy to install and maintain check valve as defined in claim 2, wherein: the spacing seal member includes a sliding guide and a seal compensator.

6. An easy to install and maintain check valve as defined in claim 5, wherein: the sliding guide piece comprises a guide groove (7) and a limiting ring (8) which is connected to the inside of the guide groove (7) in a sliding mode, the guide groove (7) is formed in the outer ring surface of the extension pipe (3), the limiting ring (8) is fixed to the end portion of the port pipe (2), and the inner ring opening of the limiting ring (8) is of a convex column structure.

7. An easy to install and maintain check valve as defined in claim 6, wherein: the sealing compensation piece comprises a sealing ring (9), and the sealing ring (9) is fixed on the inner annular surface of the limiting ring (8).

8. An easy to install and maintain check valve as defined in claim 6, wherein: the mounting includes ring flange (5) and sets up preformed hole (6) on ring flange (5) surface, and the outside in extension pipe (3) is established in ring flange (5) cover, and ring flange (5) are in between guide way (7) and leading-in ring (4).