CN210484697U

CN210484697U - Check valve

Info

Publication number: CN210484697U
Application number: CN201921503939.4U
Authority: CN
Inventors: 李尚充; 金玲敏; 陈国龙
Original assignee: Zhejiang Kaicheng Machinery Co ltd
Current assignee: Zhejiang Kaicheng Machinery Co ltd
Priority date: 2019-09-10
Filing date: 2019-09-10
Publication date: 2020-05-08
Anticipated expiration: 2029-09-10

Abstract

The utility model discloses a check valve, which comprises a valve body and a valve clack, wherein a valve cavity, a water inlet channel and a water outlet channel are arranged in the valve body, a first metal flexible pipe is welded at the left end of the valve body, and the first metal flexible pipe is provided with a first connecting flange integrally and deviates from the end of the valve body; a second metal snakeskin pipe is welded at the right end of the valve body, and a second connecting flange is integrally arranged at the end, away from the valve body, of the second metal snakeskin pipe; the valve clack is arranged at the inner end position of the sealing convex ring, an elastic sealing layer is fixedly bonded on the left end face of the valve clack, a plurality of stainless steel positioning rods are fixedly arranged in the elastic sealing layer, and the right end of each stainless steel positioning rod is welded and fixed with the left end face of the valve clack; a nickel-based wear-resistant alloy layer is welded on the right end face of the valve clack in a surfacing mode. Above-mentioned technical scheme, structural design is reasonable, simple structure, sealing member can not drop, sealing performance is good, simple to operate, application scope is wide and the practicality is good.

Description

Check valve

Technical Field

The utility model relates to the technical field of valves, concretely relates to check valve.

Background

The check valve comprises a swing check valve, which is also called a check valve, a one-way valve or a check valve and has the function of ensuring that the medium in the pipeline flows in a directional manner without flowing backwards.

At present, swing check valve is when using, and the valve clack is sealed with the disk seat and is adopted to set up the sealing member at the terminal surface of valve clack and realize sealedly, however, this sealing member is because the fastness is relatively poor, drops easily in the use to cause the influence for sealed, current swing check valve structure sets up unreasonablely moreover, and inlet and liquid outlet position are all fixed, can't adjust, run into complicated mounted position and just can't install, and application scope is little, and the practicality is poor.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a check valve that structural design is reasonable, simple structure, sealing member can not drop, sealing performance is good, simple to operate, application scope are wide and the practicality is good.

In order to achieve the above purpose, the utility model provides a following technical scheme: a check valve comprises a valve body and a valve clack, wherein a valve cavity, a water inlet channel and a water outlet channel are arranged in the valve body, a first metal snake leather pipe is welded at the position, located at the water inlet of the water inlet channel, of the left end of the valve body, and a first connecting flange is integrally arranged on the first metal snake leather pipe, and deviates from the end of the valve body; a second metal snakeskin pipe is welded at the position, located at the water outlet of the water outlet channel, of the right end of the valve body, and a second connecting flange is integrally arranged at the end, away from the valve body, of the second metal snakeskin pipe; the valve body is integrally provided with a sealing convex ring at the position of an inner port of the water inlet channel, the valve clack is arranged at the inner end position of the sealing convex ring and is made of stainless steel materials, an elastic sealing layer is fixedly bonded on the left end surface of the valve clack, a plurality of stainless steel positioning rods are fixedly arranged in the elastic sealing layer, and the right end of each stainless steel positioning rod is welded and fixed with the left end surface of the valve clack; and a nickel-based wear-resistant alloy layer is welded on the right end face of the valve clack in a surfacing mode.

By adopting the technical scheme, the first metal snakeskin tube and the second metal snakeskin tube can be bent at will, so that the positions can be adjusted conveniently during installation, the installation and the operation are convenient, and the metal snakeskin tube is suitable for various complex installation positions; a stainless steel positioning rod is arranged in the elastic sealing layer of the valve clack, so that the elastic sealing layer is reliably connected, is not easy to fall off and has good sealing performance; the whole check valve has the advantages of reasonable structural design, simple structure, difficult falling of a sealing element, good sealing performance, convenience in installation, wide application range and good practicability.

The utility model discloses further set up to: the upper right end of the valve cavity is provided with a limiting groove used for limiting the maximum rotation stroke of the valve clack, and a buffer block is embedded in the limiting groove.

The utility model discloses still further set up to: a first sealing ring is fixedly bonded on the end face of the first connecting flange, which is far away from the first metal snakeskin tube; and a second sealing ring is fixedly bonded on the end face, deviating from the second metal flexible pipe, of the second connecting flange.

The utility model discloses still further set up to: the valve comprises a valve cavity, a valve clack, a connecting seat, a hinge pin and a spring, wherein the connecting seat is welded at the left upper end of the valve cavity, the hinge pin penetrates through the upper end of the valve clack, and the valve clack is hinged with the connecting seat through the hinge pin.

The utility model discloses still further set up to: the number of the stainless steel positioning rods in the elastic sealing layer is more than three, the elastic sealing layer and the stainless steel positioning rods are fixedly bonded to form an integral structure, and the thickness of the elastic sealing layer is 3-15 mm.

The utility model discloses still further set up to: the elastic sealing layer, the first sealing ring and the second sealing ring are all made of rubber or polytetrafluoroethylene materials.

The utility model has the advantages that: compared with the prior art, the utility model has more reasonable structure, the first metal snakelike leather pipe and the second metal snakelike leather pipe can be bent freely, the position can be adjusted conveniently during installation, the installation operation is convenient, and the utility model is suitable for various complex installation positions; a stainless steel positioning rod is arranged in the elastic sealing layer of the valve clack, so that the elastic sealing layer is reliably connected, is not easy to fall off and has good sealing performance; the whole check valve has the advantages of reasonable structural design, simple structure, difficult falling of a sealing element, good sealing performance, convenience in installation, wide application range and good practicability.

The invention is further described with reference to the drawings and the specific embodiments.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

fig. 2 is an enlarged schematic view of a portion I in fig. 1.

Detailed Description

In the description of the present embodiment, it should be noted that, as the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "front", "rear", etc. appear, the indicated orientation or positional relationship thereof is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" as appearing herein are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Referring to fig. 1 and 2, the utility model discloses a check valve, including valve body 1 and valve clack 2, be provided with valve pocket 11, inhalant canal 12 and exhalant canal 13 in the valve body 1, the left end of valve body 1 is located the water inlet position of inhalant canal 12 and is welded with first metal flexible hose 3, first metal flexible hose 3 deviates from valve body end and is provided with first connecting flange 31 as an organic whole; a second metal snakeskin pipe 4 is welded at the position, located at the water outlet of the water outlet channel 13, of the right end of the valve body 1, and a second connecting flange 41 is integrally arranged on the second metal snakeskin pipe 4 away from the end of the valve body; a sealing convex ring 14 is integrally arranged at the position of an inner port of the valve body 1, which is positioned in the water inlet channel, the valve clack 2 is arranged at the inner end position of the sealing convex ring 14, the valve clack 2 is made of stainless steel materials, an elastic sealing layer 5 is fixedly bonded on the left end surface of the valve clack 2, a plurality of stainless steel positioning rods 6 are fixedly arranged in the elastic sealing layer 5, and the right end of each stainless steel positioning rod 6 is welded and fixed with the left end surface of the valve clack 2; and a nickel-based wear-resistant alloy layer 7 is welded on the right end face of the valve clack 2 in a surfacing mode.

Preferably, the first metal bellows 3, the first connecting flange 31, the second metal bellows 4 and the second connecting flange 41 are all made of stainless steel.

For making the utility model discloses the structure sets up more rationally, as preferred, this embodiment the upper right end of valve pocket 11 is provided with the spacing recess 15 that is used for limiting the biggest rotation stroke of valve clack, the embedded buffer block 8 that is provided with in spacing recess 15. The buffer block 8 is made of rubber or polytetrafluoroethylene materials, and the buffer block 8 and the inner wall surface of the limiting groove 15 are fixedly bonded through existing glue or fixedly connected through existing screws.

A first sealing ring 9 is fixedly bonded on the end face, deviating from the first metal snakeskin tube 3, of the first connecting flange 31; and a second sealing ring 10 is fixedly bonded on the end face, deviating from the second metal flexible pipe 4, of the second connecting flange 41.

A connecting seat 16 is welded at the left upper end of the valve cavity 11, a pin shaft 17 penetrates through the upper end of the valve clack 2, and the valve clack 2 is hinged to the connecting seat 16 through the pin shaft 17. Preferably, a torsion spring mechanism is arranged at the joint of the pin 17 and the connecting seat 16.

The number of the stainless steel positioning rods 6 in the elastic sealing layer 5 is more than three, the elastic sealing layer 5 and the stainless steel positioning rods 6 are fixedly bonded to form an integral structure, and the thickness of the elastic sealing layer 5 is 3-15 mm.

The elastic sealing layer 5, the first sealing ring 9 and the second sealing ring 10 are all made of rubber or polytetrafluoroethylene materials.

In practical application, the first metal snakeskin tube and the second metal snakeskin tube can be bent at will, so that the positions can be adjusted conveniently during installation, the installation and the operation are convenient, and the metal snakeskin tube is suitable for various complex installation positions; a stainless steel positioning rod is arranged in the elastic sealing layer of the valve clack, so that the elastic sealing layer is reliably connected, is not easy to fall off and has good sealing performance; the whole check valve has the advantages of reasonable structural design, simple structure, difficult falling of a sealing element, good sealing performance, convenience in installation, wide application range and good practicability.

The above embodiments are only used for further explanation of the present invention, and it is not understood that the present invention is limited by the protection scope of the present invention, and the technical engineers in the field are right according to the above contents of the present invention.

Claims

1. The utility model provides a check valve, includes valve body (1) and valve clack (2), be provided with valve pocket (11), inhalant canal (12) and exhalant canal (13) in valve body (1), its characterized in that: a first metal snakeskin pipe (3) is welded at the position, located at the water inlet of the water inlet channel (12), of the left end of the valve body (1), and a first connecting flange (31) is integrally arranged at the end, away from the valve body, of the first metal snakeskin pipe (3); a second metal snakeskin pipe (4) is welded at the position, located at the water outlet of the water outlet channel (13), of the right end of the valve body (1), and a second connecting flange (41) is integrally arranged at the end, away from the valve body, of the second metal snakeskin pipe (4); a sealing convex ring (14) is integrally arranged at the position, located at the inner port of the water inlet channel, of the valve body (1), the valve clack (2) is installed at the inner end position of the sealing convex ring (14), the valve clack (2) is made of stainless steel materials, an elastic sealing layer (5) is fixedly bonded on the left end face of the valve clack (2), a plurality of stainless steel positioning rods (6) are fixedly arranged in the elastic sealing layer (5), and the right end of each stainless steel positioning rod (6) is welded and fixed with the left end face of the valve clack (2); and a nickel-based wear-resistant alloy layer (7) is welded on the right end face of the valve clack (2).

2. A check valve as claimed in claim 1, wherein: the valve is characterized in that a limiting groove (15) used for limiting the maximum rotation stroke of the valve clack is arranged at the upper right end of the valve cavity (11), and a buffer block (8) is embedded in the limiting groove (15).

3. A check valve as claimed in claim 1, wherein: a first sealing ring (9) is fixedly bonded on the end face, deviating from the first metal flexible pipe (3), of the first connecting flange (31); and a second sealing ring (10) is fixedly bonded on the end face, deviating from the second metal flexible pipe (4), of the second connecting flange (41).

4. A check valve as claimed in claim 1, wherein: the valve is characterized in that a connecting seat (16) is welded at the upper left end of the valve cavity (11), a pin shaft (17) penetrates through the upper end of the valve clack (2), and the valve clack (2) is hinged to the connecting seat (16) through the pin shaft (17).

5. A check valve as claimed in claim 1, wherein: the number of the stainless steel positioning rods (6) in the elastic sealing layer (5) is more than three, the elastic sealing layer (5) and the stainless steel positioning rods (6) are fixedly bonded to form an integral structure, and the thickness of the elastic sealing layer (5) is 3-15 mm.

6. A check valve as claimed in claim 3, wherein: the elastic sealing layer (5), the first sealing ring (9) and the second sealing ring (10) are all made of rubber or polytetrafluoroethylene materials.