CN217272207U

CN217272207U - Precision low-pressure one-way valve

Info

Publication number: CN217272207U
Application number: CN202221111380.2U
Authority: CN
Inventors: 李锦杰; 张德富
Original assignee: XIAMEN MAIFENG SEAL PRODUCTS CO Ltd
Current assignee: XIAMEN MAIFENG SEAL PRODUCTS CO Ltd
Priority date: 2022-05-10
Filing date: 2022-05-10
Publication date: 2022-08-23
Anticipated expiration: 2032-05-10

Abstract

The utility model relates to the technical field of one-way valves, in particular to a precision low-pressure one-way valve, which comprises a one-way valve shell, a spring box and a movable piston, wherein the right end of the one-way valve shell is fixedly connected with the spring box, the inner side of the one-way valve shell is slidably connected with the movable piston, the right end face of the movable piston is fixedly connected with a movable rod, the right end of the movable rod is slidably connected with the one-way valve shell through a first sealing ring, the outer side of the end of the movable rod is fixedly connected with a limiting plate, the other end of the limiting plate is fixedly connected with a telescopic spring, a limiting post is fixedly connected with the limiting plate, and the limiting post is slidably connected with the spring box through a chute, the problem of original device function singleness, be not convenient for install and use on the pipeline that the operating mode is complicated is solved.

Description

Precision low-pressure one-way valve

Technical Field

The utility model relates to a check valve technical field specifically is a precision low pressure check valve.

Background

The check valve is commonly called as a check valve, the check valve is also called as a check valve or a check valve and is used for preventing reverse flow of oil flow in a hydraulic system or preventing reverse flow of compressed air in a pneumatic system, the check valve has a straight-through type and a right-angle type, the straight-through type check valve is installed on a pipeline in a threaded connection mode, the right-angle type check valve has three modes of threaded connection, plate type connection and flange connection, the application of the low-pressure check valve with precision is increasingly wide, and therefore the demand for the low-pressure check valve with precision is increasingly increased.

Most check valves on the market can only play the effect of one-way conduction in the actual use, and such check valve is not convenient for satisfy user's multiple demand when using in the comparatively complicated pipeline of operating mode, consequently, provides a precision low pressure check valve to above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a low atmospheric pressure check valve of precision makes it can play multiple function in the use of reality.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a precision low pressure check valve, includes check valve shell, spring box and removal piston, check valve shell right-hand member fixedly connected with spring box, the inboard sliding connection of check valve shell has the removal piston, remove piston right-hand member face fixedly connected with carriage release lever, the carriage release lever right-hand member is in the same place through first sealing washer and check valve shell sliding connection, the carriage release lever has end outside fixedly connected with limiting plate, limiting plate has the fixedly connected with expanding spring, the spacing post of fixedly connected with on the limiting plate, spacing post passes through spout and spring box sliding connection and is in the same place, rotate through the fixed block on the spring box and be connected with the rotating ring, there is the stopper spring box right-hand member inboard through female screw thread screwed connection, there is the threaded rod stopper inboard through screw hole screwed connection.

Preferably, first punchhole and second punchhole have been seted up on the check valve shell, first punchhole and second punchhole outside are equipped with annular plectane, annular plectane passes through the second sealing washer and links together with the check valve shell rotation, fixedly connected with connecting pipe on the annular plectane, connecting pipe, annular plectane and check valve shell are the setting of intercommunication.

Preferably, the limiting groove is formed in the inner side of the upper end of the limiting column, the limiting column is connected with the rotating ring through the limiting groove, the rotating ring is arranged in a U shape, and the central point of the limiting column and the central point of the rotating ring are arranged on the same horizontal plane.

Preferably, the left end of the limiting block is cylindrical, threads are formed in the outer side of the left end of the limiting block, and the vertical section of the right end of the limiting block is hexagonal.

Preferably, the telescopic spring is located at the position outside the movable rod, and the central points of the telescopic spring, the movable rod and the threaded rod are arranged on the same horizontal plane.

Preferably, the check valve shell and the spring box are both arranged in a cylindrical shape, the vertical cross sections of the check valve shell and the spring box are equal in size, and the spring box is provided with openings at two ends.

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

1. in the utility model, the limiting column, the rotating ring and the threaded rod are arranged, so that the device can play the effects of interception, unidirectional conduction and bidirectional conduction in the actual use process, and the problems that the original device has single function and is inconvenient to install on a pipeline with complex working conditions for use are solved;

2. the utility model discloses in, annular plectane, first punchhole, second punchhole and connecting pipe through setting up for the device can be adjusted the angle of connecting pipe, with the problem of solving original device and not being convenient for install and use on the external pipeline of different angles.

Drawings

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

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

FIG. 3 is a schematic view of the structure of the position limiting block of the present invention;

fig. 4 is a schematic view of the structure of the limit post of the present invention.

In the figure: 1-one-way valve shell, 2-spring box, 3-movable piston, 4-movable rod, 5-limit plate, 6-expansion spring, 7-limit column, 8-first seal ring, 9-limit block, 10-threaded rod, 11-internal thread, 12-first hole, 13-second hole, 14-annular circular plate, 15-second seal ring, 16-fixed block, 17-rotating ring, 18-sliding groove, 19-connecting pipe, 20-threaded hole and 21-limit groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

Referring to fig. 1-4, the present invention provides a technical solution:

the utility model provides a precision low pressure check valve, including check valve shell 1, spring box 2 and

movable piston

3, 1 right-hand member fixedly connected with spring box 2 of check valve shell, 1 inboard sliding connection of check valve shell has

movable piston

3, 3 right-hand member face fixedly connected with carriage release lever 4 of movable piston, 4 right-hand members of carriage release lever are in the same place through

first sealing washer

8 and 1 sliding connection of check valve shell, carriage release lever 4 has end outside fixedly connected with limiting plate 5, limiting plate 5 has fixedly connected with expanding spring 6, fixedly connected with spacing post 7 on the limiting plate 5, spacing post 7 is in the same place through spout 19 and spring box 2 sliding connection, rotate through fixed block 16 on the spring box 2 and be connected with

swivel ring

17, 2 right-hand member inboards of spring box have stopper 9 through internal thread 11 threaded connection, stopper 9 inboard has threaded rod 10 through 20 threaded connection of screw hole.

The one-way valve shell 1 is provided with a first hole 12 and a second hole 13, an annular circular plate 14 is arranged on the outer sides of the first hole 12 and the second hole 13, the annular circular plate 14 is rotatably connected with the one-way valve shell 1 through a second sealing ring 15, the annular circular plate 14 is fixedly connected with a connecting pipe 19, and the connecting pipe 19, the annular circular plate 14 and the one-way valve shell 1 are communicated, so that the one-way conduction effect can be achieved in the actual use process; the inner side of the upper end of the limiting column 7 is provided with a limiting groove 21, the limiting column 7 is connected with the rotating ring 17 through the limiting groove 21, the rotating ring 17 is arranged in a U shape, and the central point of the limiting column 7 and the central point of the rotating ring 17 are arranged on the same horizontal plane, so that the stability of the whole structure of the device can be effectively improved in the actual use process; the left end of the limiting block 9 is cylindrical, the outer side of the left end of the limiting block 9 is provided with threads, and the vertical section of the right end of the limiting block 9 is hexagonal and is convenient to connect with the spring box 2; the telescopic spring 6 is positioned at the outer side of the movable rod 4, and the central points of the telescopic spring 6, the movable rod 4 and the threaded rod 10 are arranged on the same horizontal plane, so that the movable piston 3 can be stably limited; check valve shell 1 and spring box 2 all are the setting of cylindricality, and the perpendicular cross-section size of check valve shell 1 and spring box 2 equals, and spring box 2 is both ends open-ended setting, is convenient for protect and change expanding spring 6.

The working process is as follows: in the process of installing and using a low-pressure check valve with precision, firstly, a worker needs to use the whole device at a position between pipelines through a connecting pipe 19, the worker needs to pay attention to the fact that a first hole 12 is a water outlet and a second hole 12 is a water inlet in the installation process, after the installation is completed, the worker can actively move a limiting column 7 and enable the limiting column 7 and a rotating ring 17 to be connected together in the actual use process, so that the two-way communication of the device can be controlled, meanwhile, the worker can rotate a threaded rod 10 according to the actual need in the actual use process to enable the position of the left end of the threaded rod 10 to limit the position of the right end of a moving rod 4, so that the device can cut off the pipelines, the function of the check valve can be converted according to the actual need in the actual use process, and the low-pressure check valve has good practical value, and can change expanding spring 6 according to the pressure in the pipeline through the spacing post 7 that sets up in the use of reality, have good practicality and convenience, the staff can rotate annular plectane 14 according to external pipeline's angle in the use of reality simultaneously, so more be convenient for link together connecting pipe 19 and external pipeline, very convenient.

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 invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a precision low pressure check valve, includes check valve shell (1), spring box (2) and removal piston (3), its characterized in that: the check valve comprises a check valve shell (1), a spring box (2) is fixedly connected with the right end of the check valve shell (1), a movable piston (3) is connected to the inner side of the check valve shell (1) in a sliding manner, a movable rod (4) is fixedly connected to the right end face of the movable piston (3), the right end of the movable rod (4) is connected with the check valve shell (1) in a sliding manner through a first sealing ring (8), a limiting plate (5) is fixedly connected to the outer side of the right end of the movable rod (4), an expansion spring (6) is fixedly connected to the right end of the limiting plate (5), a limiting column (7) is fixedly connected to the limiting plate (5), the limiting column (7) is connected with the spring box (2) in a sliding manner through a sliding groove (18), a rotating ring (17) is rotatably connected to the spring box (2) through a fixing block (16), and a limiting block (9) is connected to the inner side of the right end of the spring box (2) through an internal thread (11), the inner side of the limiting block (9) is spirally connected with a threaded rod (10) through a threaded hole (20).

2. The low-precision air pressure check valve as claimed in claim 1, wherein: first punchhole (12) and second punchhole (13) have been seted up on check valve shell (1), first punchhole (12) and second punchhole (13) outside are equipped with annular plectane (14), annular plectane (14) are in the same place through second sealing washer (15) and check valve shell (1) rotation link, fixedly connected with connecting pipe (19) are gone up in annular plectane (14), connecting pipe (19), annular plectane (14) and check valve shell (1) are the setting of intercommunication.

3. The low precision pressure check valve of claim 1, wherein: spacing groove (21) have been seted up to spacing post (7) upper end inboard, spacing post (7) link together through spacing groove (21) and rotating ring (17), rotating ring (17) are the setting of "U" type, the central point of spacing post (7) and the central point setting of rotating ring (17) are on same horizontal plane.

4. The low precision pressure check valve of claim 1, wherein: the left end of the limiting block (9) is cylindrical, threads are formed in the outer side of the left end of the limiting block (9), and the vertical section of the right end of the limiting block (9) is hexagonal.

5. The low-precision air pressure check valve as claimed in claim 1, wherein: the telescopic spring (6) is located at the position outside the moving rod (4), and the central points of the telescopic spring (6), the moving rod (4) and the threaded rod (10) are arranged on the same horizontal plane.

6. The low-precision air pressure check valve as claimed in claim 1, wherein: the check valve is characterized in that the check valve shell (1) and the spring box (2) are both arranged in a cylindrical shape, the vertical sections of the check valve shell (1) and the spring box (2) are equal in size, and the spring box (2) is arranged with openings at two ends.