CN215059758U

CN215059758U - Bivalve check valve

Info

Publication number: CN215059758U
Application number: CN202121601046.0U
Authority: CN
Inventors: 佟泽
Original assignee: Tianjin Tanggu Tianshun Valve Industrial Co ltd
Current assignee: Tianjin Tanggu Tianshun Valve Industrial Co ltd
Priority date: 2021-07-14
Filing date: 2021-07-14
Publication date: 2021-12-07
Anticipated expiration: 2031-07-14

Abstract

The utility model relates to a check valve technical field just discloses a bivalve check valve, including the valve case, the inboard at valve case middle part has cup jointed the compound butterfly plate of semicircle of two symmetries respectively, and installs elasticity canceling release mechanical system, two between the inner wall of the side of the compound butterfly plate one side of semicircle and valve case one side the inside of the compound butterfly plate opposite side of semicircle has cup jointed the support member jointly, the equal threaded connection in the inboard at valve case middle part in both ends of support member. The utility model discloses two sets of compound butterfly plates of elasticity canceling release mechanical system cooperation and valve case used jointly backs that set up, make the compound butterfly plate of semicircle inside flexible pipe, second connecting block, the combination of first connecting block of the inside elasticity of elasticity canceling release mechanical system form the closed protection space when the non return effect is realized in the inside reciprocal upset of valve case, make it possess the corrosion resisting property of high strength when not interfering the compression spring operation.

Description

Bivalve check valve

Technical Field

The utility model relates to a check valve technical field specifically is a bivalve check valve.

Background

The double-flap check valve is also called as a butt-clamping double-flap check valve and is mainly used for pure pipelines and industrial, environmental protection, water treatment, water supply and drainage pipelines of high-rise buildings and used for preventing media from flowing reversely, the check valve adopts a butt-clamping type, the butterfly plates are two semicircles and are forcibly reset by adopting springs, a sealing surface can be made of a body surfacing wear-resistant material or lining rubber, the use range is wide, the sealing is reliable, but the existing double-flap check valve has the problems that some problems need to be further improved in the actual use process, mainly, an internal spring structure is easily damaged due to long-time liquid washing and corrosion because of long-time contact with liquid in the pipeline in the use process, a rod piece for supporting the turnover resetting of the two semicircular butterfly plates needs to be connected with a valve shell per se by a screw and a nut connecting piece in an auxiliary way, the installation is complicated, and the screw and the nut connecting piece protrudes out of the surface of the valve body, the beauty of the whole device is reduced.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model provides a bivalve check valve has solved the problem that above-mentioned background art provided.

The utility model provides a following technical scheme: the utility model provides a bivalve check valve, includes the valve case, the inboard at valve case middle part has cup jointed the compound butterfly plate of semicircle of two symmetries respectively, and installs elasticity canceling release mechanical system, two between the side of the compound butterfly plate one side of semicircle and the inner wall of valve case one side the inside of the compound butterfly plate opposite side of semicircle has cup jointed the support member jointly, the inboard at the valve case middle part is connected to the equal threaded connection in both ends of support member.

Carefully, the side face of one side of each of the two semicircular composite butterfly plates is movably connected with a limiting sleeve, the limiting sleeves are fixedly sleeved inside one side of the valve shell, and the limiting sleeves are not in contact with the elastic reset mechanisms.

Carefully, the inside of the elastic reset mechanism comprises a compression spring, the two ends of the compression spring are fixedly connected with a first connecting block and a second connecting block respectively, one side of the first connecting block is fixedly connected to the side face of one side of the compression spring, the second connecting block is fixedly connected to the inner wall of one side of the valve housing, an elastic telescopic pipe is movably sleeved on the outer side of the compression spring, and the two ends of the elastic telescopic pipe are fixedly connected to the surface of the first connecting block and the surface of the second connecting block respectively and form a closed space.

Carefully, the whole of support member is the I shape structure, and the inside of support member is including the rotation support pole, the both ends of rotation support pole cup joint the inboard at the compound butterfly plate bottom of a semicircle and the inboard at another compound butterfly plate top of semicircle respectively, the terminal surface at rotation support pole both ends is the first threaded rod of fixedly connected with and second threaded rod respectively, the inboard at the valve case middle part of first threaded rod and the equal threaded connection of second threaded rod, the interior hexagonal groove has been seted up jointly to the inside of rotation support pole one end and the inside of first threaded rod.

Carefully, the end face of one end of the first threaded rod is movably connected with a sealing chock block, the sealing chock block is in threaded connection with the inner side of the middle of the valve shell, and a cross groove is formed in the top face of one end of the sealing chock block.

Carefully, the sealing rings are movably sleeved on the surfaces of the two ends of the rotary supporting rod in a clamping mode, and the sealing rings are fixedly connected to the inner wall of the middle of the valve shell.

Compared with the prior art, the utility model discloses possess following beneficial effect:

1. the utility model discloses two sets of compound butterfly plates of elasticity canceling release mechanical system cooperation and valve case used jointly backs that set up, make the compound butterfly plate of semicircle inside flexible pipe, second connecting block, the combination of first connecting block of the inside elasticity of elasticity canceling release mechanical system form the closed protection space when the non return effect is realized in the inside reciprocal upset of valve case, make it possess the corrosion resisting property of high strength when not interfering the compression spring operation.

2. The utility model discloses the back is used together to the sealed chock that sets up, sealing washer cooperation support member, can seal the processing to the junction of supporting the member in the valve case outside realizing the function that supports the member rotation and support, avoids corroding, and convenient follow-up dismantlement maintenance, and support the member specifically and support the inside that the structure of member buries the valve case completely when adopting the screw closure with being connected of valve case, has promoted the pleasing to the eye of integrated device when the installation is convenient.

Drawings

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

FIG. 2 is a schematic cross-sectional view of the structural support bar of the present invention;

FIG. 3 is a right-side view of the structure of the present invention;

FIG. 4 is a left side view of the structure of the present invention;

fig. 5 is an enlarged schematic view of a point a in the structure diagram of the present invention;

fig. 6 is an enlarged schematic view of the point B in the structure diagram of the present invention 2.

In the figure: 1. a valve housing; 2. a semicircular composite butterfly plate; 3. an elastic reset mechanism; 31. a compression spring; 32. a first connection block; 33. a second connecting block; 34. an elastic telescopic pipe; 4. supporting the rod member; 41. rotating the support rod; 42. a first threaded rod; 43. a second threaded rod; 5. a sealing plug block; 6. a seal ring; 7. an inner hexagonal groove; 8. a limiting sleeve.

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.

Referring to fig. 1-6, a double-disc check valve comprises a valve housing 1, two symmetrical semicircular composite butterfly plates 2 are respectively sleeved on the inner side of the middle part of the valve housing 1, a limiting sleeve 8 is movably connected to the side surface of one side of the two semicircular composite butterfly plates 2, the limiting sleeve 8 is fixedly sleeved inside one side of the valve housing 1, the limiting sleeve 8 is not in contact with an elastic reset mechanism 3, the limiting sleeve 8 limits the turning range of the two symmetrical semicircular composite butterfly plates 2, so as to improve the reliability of the use function of the two symmetrical semicircular composite butterfly plates 2, the elastic reset mechanism 3 is installed between the side surface of one side of the semicircular composite butterfly plate 2 and the inner wall of one side of the valve housing 1, the elastic reset mechanism 3 comprises a compression spring 31 inside, and the two ends of the compression spring 31 are respectively and fixedly connected with a first connecting block 32 and a second connecting block 33, one side of the first connecting block 32 is fixedly connected to the side of one side of the compression spring 31, the second connecting block 33 is fixedly connected to the inner wall of one side of the valve housing 1, the outer side of the compression spring 31 is movably sleeved with an elastic extension tube 34, two ends of the elastic extension tube 34 are respectively fixedly connected to the surface of the first connecting block 32 and the surface of the second connecting block 33 to form a closed space, after the two elastic reset mechanisms 3 are used together with the two sets of semicircular composite butterfly plates 2 and the valve housing 1, the elastic extension tube 34, the second connecting block 33 and the first connecting block 32 in the elastic reset mechanism 3 are combined to form a closed protection space while the semicircular composite butterfly plates 2 are turned in the valve housing 1 in a reciprocating manner to realize a check effect, the compression spring 31 has high-strength corrosion resistance performance while the operation of the compression spring 31 is not interfered, and the support rod member 4 is sleeved together in the other side of the two semicircular composite butterfly plates 2, the two ends of the supporting rod piece 4 are both in threaded connection with the inner side of the middle part of the valve shell 1, the whole supporting rod piece 4 is of an I-shaped structure, the inside of the supporting rod piece 4 comprises a rotary supporting rod 41, the two ends of the rotary supporting rod 41 are respectively sleeved on the inner side of the bottom of one semicircular composite butterfly plate 2 and the inner side of the top of the other semicircular composite butterfly plate 2, the end surfaces of the two ends of the rotary supporting rod 41 are respectively and fixedly connected with a first threaded rod 42 and a second threaded rod 43, the first threaded rod 42 and the second threaded rod 43 are both in threaded connection with the inner side of the middle part of the valve shell 1, the inner part of one end of the rotary supporting rod 41 and the inner part of the first threaded rod 42 are both provided with an inner hexagonal groove 7, the structure of the supporting rod piece 4 is completely embedded into the valve shell 1 when the supporting rod piece 4 is particularly connected with the valve shell 1 by adopting threaded locking, the installation is convenient and the appearance of the whole device is improved, the terminal surface swing joint of first threaded rod 42 one end has sealed

chock

5, and 5 threaded connection of sealed chock is in the inboard at valve case 1 middle part, the cross recess has been seted up to the top surface of 5 one ends of sealed chock, sealed chock 5 carries out sealing treatment to first threaded rod 42 one end and the inboard junction at valve case 1 middle part, it produces to avoid corroding the phenomenon, sealing washer 6 has been cup jointed in the equal joint activity in surface at rotatory bracing piece 41 both ends, and 6 fixed connection of sealing washer are on the inner wall at valve case 1 middle part, 6 bracing piece spare 4 of sealing washer seal treatment in the junction of valve case 1, avoid corroding, make things convenient for follow-up dismantlement maintenance.

The working principle is as follows: when in use, the compression spring 31 in the elastic reset mechanism 3 provides the turning reset power for the two semicircular composite butterfly plates 2, so as to ensure that the two semicircular composite butterfly plates 2 perform the non-return function on the channel in the valve shell 1 under the turning support of the support rod piece 4, and the elastic bellows 34 provided outside the compression spring 31 will expand and contract and return the compression spring 31, and the two ends of the elastic extension tube 34 are matched with the first connecting block 32 and the second connecting block 33 to provide a closed space protection when the specific operation of the compression spring 31 is not influenced, so that the compression spring 31 is prevented from being damaged due to long-time liquid scouring and corrosion, while the connection of the support rods 4 with the valve housing 1 is in a screw-lock connection and the structure of the support rods 4 is completely embedded in the valve housing 1, and the joint of the support rod 4 and the valve shell 1 is subjected to waterproof treatment by using a sealing plug 5 and a sealing ring 6 respectively.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Simultaneously in the utility model discloses an in the drawing, fill the pattern and just do not do any other injecions for distinguishing the picture layer.

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. A double flap check valve comprising a valve housing (1), characterized in that: the inboard at valve case (1) middle part has cup jointed the compound butterfly plate of semicircle (2) of two symmetries respectively, and installs between the side of the compound butterfly plate of semicircle (2) one side and the inner wall of valve case (1) one side elastic reset mechanism (3), two the inside of the compound butterfly plate of semicircle (2) opposite side has cup jointed support member (4) jointly, the inboard at the equal threaded connection in both ends of support member (4) valve case (1) middle part.

2. The double-flap check valve according to claim 1, wherein: the side face of one side of each of the two semicircular composite butterfly plates (2) is movably connected with a limiting sleeve (8), the limiting sleeve (8) is fixedly sleeved inside one side of the valve shell (1), and the limiting sleeve (8) is not in contact with the elastic reset mechanism (3).

3. The double-flap check valve according to claim 1, wherein: the inside of elasticity canceling release mechanical system (3) is including inside of elasticity canceling release mechanical system (3) including compression spring (31), and the both ends difference fixedly connected with first connecting block (32) and second connecting block (33) of compression spring (31), one side fixed connection of first connecting block (32) is on the side of compression spring (31) one side, second connecting block (33) fixed connection is on the inner wall of valve case (1) one side, the outside activity of compression spring (31) cup joints flexible pipe (34), the both ends difference fixed connection of flexible pipe (34) is at the surface of first connecting block (32) and the surface of second connecting block (33) and becomes enclosure space.

4. The double-flap check valve according to claim 1, wherein: the support rod piece (4) is integrally of an I-shaped structure, the support rod piece (4) is internally provided with a rotary support rod (41), the two ends of the rotary support rod (41) are respectively sleeved on the inner side of the bottom of one semicircular composite butterfly plate (2) and the inner side of the top of the other semicircular composite butterfly plate (2), the end faces of the two ends of the rotary support rod (41) are respectively fixedly connected with a first threaded rod (42) and a second threaded rod (43), the first threaded rod (42) and the second threaded rod (43) are in threaded connection with each other on the inner side of the middle part of the valve shell (1), and an inner hexagonal groove (7) is jointly formed in the inner part of one end of the rotary support rod (41) and the inner part of the first threaded rod (42).

5. The double-flap check valve according to claim 4, wherein: the end face of one end of the first threaded rod (42) is movably connected with a sealing chock block (5), the sealing chock block (5) is in threaded connection with the inner side of the middle of the valve shell (1), and a cross groove is formed in the top face of one end of the sealing chock block (5).

6. The double-flap check valve according to claim 4, wherein: the surfaces at the two ends of the rotating support rod (41) are movably connected with sealing rings (6) in a clamping mode, and the sealing rings (6) are fixedly connected to the inner wall of the middle portion of the valve shell (1).