CN113124204A

CN113124204A - No dead angle check valve

Info

Publication number: CN113124204A
Application number: CN202110518018.0A
Authority: CN
Inventors: 项清河; 项青海; 项赛楠; 项赛豪
Original assignee: Bogong Valve Co ltd
Current assignee: Bogong Valve Co ltd
Priority date: 2021-05-12
Filing date: 2021-05-12
Publication date: 2021-07-16
Anticipated expiration: 2041-05-12
Also published as: CN113124204B

Abstract

The invention discloses a dead-angle-free check valve, which comprises a valve body, a valve seat and the following components: the support is arranged in the inner cavity of the valve body; the valve clack is arranged on the outer side of the support through a pin shaft; the buffer box is arranged on the inner surface wall of the inner cavity of the valve body; the limiting seat is fixed in the buffer box; the connecting plate is movably arranged on the limiting seat; and the driving mechanism drives the connecting plate to reciprocate linearly. According to the invention, when the valve clack is closed without being pushed by a medium, the first driving motor and the second driving motor are simultaneously opened, the first driving motor drives the connecting plate to move downwards, and the threaded sleeve drives the rack to move downwards and slide on the connecting plate, so that the connecting rod and the first buffer block can be driven to rotate while moving downwards, and therefore, the friction force between the first buffer block and the pin shaft is improved, the damping effect is improved, the valve is prevented from being damaged, and the service life of the check valve is prolonged.

Description

No dead angle check valve

Technical Field

The invention relates to the technical field of pipeline valves, in particular to a dead-angle-free check valve.

Background

The non-return valve is a valve commonly used in pipe systems, mainly installed at the outlet of the pump, which is used to communicate and non-return the fluid medium in the pipe system. The existing swing check valve mainly comprises a valve body, a valve seat and a check valve clack, wherein the valve seat is provided with a valve seat sealing surface and fixed in a valve body flow channel, the check valve clack is provided with a valve clack sealing surface and is arranged in a valve body inner cavity by utilizing a pin shaft, when a medium enters the valve body inner cavity from a valve inlet side, the medium pushes the check valve clack to rotate around the pin shaft to open, and when no medium enters from the valve inlet side, the check valve clack rotates around the pin shaft to. The disadvantages are that: in the process of rotating and closing the check valve clack around the pin shaft, the closing speed is easy to generate too high, so that the impact force of the valve clack sealing surface to the valve seat sealing surface is too large and the valve clack is easy to damage; meanwhile, when the check valve clack is opened quickly, the check valve clack is easy to collide with the valve body, so that the check valve clack is damaged, and the valve is damaged.

Disclosure of Invention

The invention aims to: to solve the above problems, a dead-angle-free check valve has been proposed.

In order to achieve the purpose, the invention adopts the following technical scheme:

no dead angle check valve, including valve body, disk seat, still include:

the support is arranged in the inner cavity of the valve body;

the valve clack is arranged on the outer side of the support through a pin shaft;

the buffer box is arranged on the inner surface wall of the inner cavity of the valve body;

the limiting seat is fixed in the buffer box;

the connecting plate is movably arranged on the limiting seat;

and the driving mechanism is used for driving the connecting plate to do reciprocating linear movement and is positioned inside the buffer box.

As a further description of the above technical solution:

actuating mechanism includes a driving motor, a driving motor's output transmission is connected with the dwang, the dwang tip articulates there is the turning block, the welding of connecting plate tip has the removal frame, set up the first sliding tray with turning block looks adaptation on the removal frame, two second fixing bases of fixedly connected with on the connecting plate, two rotate between the second fixing base and be connected with the connecting rod, it rotates the piece to be equipped with the drive connecting rod in the baffle-box.

As a further description of the above technical solution:

the rotating part comprises a first fixing seat, the first fixing seat is located in an inner cavity of the buffer box, one end of the first fixing seat is provided with a second driving motor, the output end of the second driving motor is in transmission connection with a lead screw, a threaded sleeve is connected onto the lead screw in a matched manner, a rack is arranged on the threaded sleeve, a gear meshed with the rack is fixedly connected onto the connecting rod, a limiting part for limiting the rack is arranged on the connecting plate, and the axis of the lead screw and the axis of the connecting rod are arranged in an inclined manner.

As a further description of the above technical solution:

the limiting part comprises a second sliding groove formed in the connecting plate, and the second sliding groove is matched with the connecting plate in shape.

As a further description of the above technical solution:

the valve body inner chamber is installed the cushion table, the cushion table outside is equipped with the bolster to the valve clack buffering.

As a further description of the above technical solution:

the buffer piece comprises a limiting sleeve fixed on the outer side of the buffer table, and the buffer table is elastically connected with a second buffer block through a spring.

As a further description of the above technical solution:

and a telescopic sleeve is arranged in the spring.

As a further description of the above technical solution:

the connecting rod end is provided with a first buffer block made of rubber.

In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:

1. according to the invention, when the valve clack is closed without being pushed by a medium, the first driving motor and the second driving motor are simultaneously opened, the first driving motor drives the connecting plate to move downwards, and the threaded sleeve drives the rack to move downwards and slide on the connecting plate, so that the connecting rod and the first buffer block can be driven to rotate while moving downwards, and therefore, the friction force between the first buffer block and the pin shaft is improved, the damping effect is improved, the valve is prevented from being damaged, and the service life of the check valve is prolonged.

2. When the valve clack is pushed by a medium to open, the valve clack can be prevented from being in rigid contact with the valve body through the arrangement of the buffer piece, so that the valve body is damaged.

Drawings

FIG. 1 is a schematic front view of a dead-corner-free check valve according to the present invention;

FIG. 2 is a schematic cross-sectional view of a dead-corner-free check valve according to the present invention;

FIG. 3 is a schematic cross-sectional view of a buffer tank of the dead-corner-free check valve according to the present invention;

fig. 4 is a partially enlarged structural diagram of a in fig. 2 of the dead-end-free check valve according to the present invention.

Illustration of the drawings:

1. a valve body; 2. a valve seat; 3. a valve flap; 4. a support; 5. a buffer tank; 6. a first drive motor; 7. a first fixed seat; 8. a second drive motor; 9. a screw rod; 10. a threaded sleeve; 11. a rack; 12. a limiting seat; 13. rotating the rod; 14. rotating the block; 15. a movable frame; 16. a first sliding groove; 17. a connecting plate; 18. a second fixed seat; 19. a connecting rod; 20. a gear; 21. a second sliding groove; 22. a first buffer block; 23. a buffer table; 24. a spring; 25. a second buffer block; 26. a telescopic sleeve; 27. a limiting sleeve.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: no dead angle check valve, including valve body 1, disk seat 2, still include:

the support 4 is arranged in the inner cavity of the valve body 1, and the support 4 is fixedly connected to the inner surface wall of the top end of the valve body 1;

the valve clack 3, the valve clack 3 is installed on the outside of the support 4 through the axis pin, the valve clack 3 is connected on the support 4 through the axis pin rotation, the non-return valve clack 3 has sealing surfaces, and utilize the axis pin to install in the valve body cavity, when the medium enters the valve body 1 cavity from the valve inlet side, the medium promotes the non-return valve clack 3 to rotate around the axis pin and open, when there is no medium to enter in the valve inlet side, the non-return valve clack 3 rotates;

the buffer box 5 is installed on the inner surface wall of the inner cavity of the valve body 1, and the buffer box 5 is fixedly connected to the inner surface wall of the end part of the valve body 1;

the limiting seat 12 is fixed in the buffer box 5, the limiting seat 12 is fixedly connected in the buffer box 5, and a notch matched with the limiting seat 12 is formed at the bottom end of the buffer box 5;

the connecting plate 17 is movably arranged on the limiting seat 12, and the connecting plate 17 is movably connected with the limiting seat 12;

the reciprocating linear motion's of drive connecting plate 17 actuating mechanism, actuating mechanism are located buffer tank 5 inside, through reciprocating linear motion, can drive connecting plate 17, connecting rod 19, first buffer block 22 and remove in vertical direction to make first buffer block 22 and round pin axle butt, play damped effect, thereby slow down valve clack 3.

Specifically, as shown in fig. 2 and fig. 3, the driving mechanism includes a first driving motor 6, the first driving motor 6 is fixed on the outer surface wall of the valve body 1, the output end of the first driving motor 6 penetrates through the valve body 1, the output end of the first driving motor 6 is connected with a rotating rod 13 in a transmission manner, the end portion of the rotating rod 13 is hinged with a rotating block 14, the top end of the connecting plate 17 is welded with a moving frame 15, the moving frame 15 and the connecting plate 17 are in an integrally formed structure, the moving frame 15 is provided with a first sliding groove 16 adapted to the rotating block 14, the rotating block 14 is located in the first sliding groove 16, the connecting plate 17 is fixedly connected with two second fixing seats 18, a connecting rod 19 is rotatably connected between the two second fixing seats 18, the end portion of the connecting rod 19 is provided with a first buffer block 22 made of rubber material, the end portion of the connecting rod 19 is fixedly connected with a first buffer, the rotation can be performed while the driving connecting rod 19 is moved downward by the rotating member, so that the friction force between the first buffer block 22 and the pin shaft is improved, the damping effect is improved, the output end of the first driving motor 6 drives the rotating rod 13 to rotate, and meanwhile, the rotating block 14 drives the moving frame 15 to slide back and forth along the limiting seat 12.

Specifically, as shown in fig. 3, the rotating member includes two first fixing seats 7, first fixing seat 7 is located the 5 inner cavities of buffer boxes, two equal fixed connections of first fixing seat 7 are in the 5 inner cavities of buffer boxes, a first fixing seat 7 tip is provided with second driving motor 8, the output transmission of second driving motor 8 is connected with lead screw 9, it is connected with swivel nut 10 to close on the lead screw 9, fixedly connected with rack 11 on the swivel nut 10, the rigid coupling has gear 20 with rack 11 meshing on connecting rod 19, be equipped with the spacing portion spacing to rack 11 on the connecting plate 17, can guarantee the meshing effect of rack 11 and gear 20 through spacing portion, thereby improve the rotation effect, lead screw 9 axis and connecting rod 19 axis set up for the slope, spacing portion is including offering second sliding tray 21 on connecting plate 17, second sliding tray 21 and connecting plate 17 shape looks adaptation.

Specifically, as shown in fig. 2 and 4, a buffer table 23 is installed in the inner cavity of the valve body 1, the buffer table 23 is fixedly connected to the inner surface wall of the valve body 1, and a buffer member for buffering the valve flap 3 is arranged outside the buffer table 23.

Specifically, as shown in fig. 4, the buffer member includes a limiting sleeve 27 fixed on the outer side of the buffer table 23, the buffer table 23 is elastically connected to a second buffer block 25 through a spring 24, a telescopic sleeve 26 is arranged in the spring 24, the telescopic sleeve 26 is fixedly connected to the buffer table 23, a telescopic end of the telescopic sleeve 26 is fixedly connected to the second buffer block 25, the second buffer block 25 is made of rubber, and the second buffer block 25 abuts against the end portion of the valve flap 3 to achieve a buffering effect.

The working principle is as follows: when valve clack 3 opens under the promotion of medium, setting through the bolster, can prevent valve clack 3 and 1 rigid contact of valve body, thereby damage valve body 1, when valve clack 3 closed under the promotion that does not have the medium, open first driving motor 6 and second driving motor 8 simultaneously, first driving motor 6 drives connecting plate 17 downstream, swivel nut 10 drives rack 11 downstream simultaneously, and slide on connecting plate 17, can drive connecting rod 19 and first buffer block 22 and take place to rotate when removing downwards, thereby improve the frictional force of first buffer block 22 and round pin axle, thereby improve the damping effect, the reversal of control first driving motor 6, the realization resets first buffer block 22.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. No dead angle check valve, including valve body (1), disk seat (2), its characterized in that still includes:

the support (4), the said support (4) is set up in the cavity of the valve block (1);

the valve clack (3) is mounted on the outer side of the support (4) through a pin shaft;

the buffer tank (5), the said buffer tank (5) is installed on the inner surface wall of cavity of the valve body (1);

the limiting seat (12), the limiting seat (12) is fixed in the buffer box (5);

the connecting plate (17), the said connecting plate (17) is set up on the spacing seat (12) movably;

and the driving mechanism drives the connecting plate (17) to do reciprocating linear movement and is positioned inside the buffer box (5).

2. The dead-angle-free check valve according to claim 1, wherein the driving mechanism comprises a first driving motor (6), an output end of the first driving motor (6) is connected with a rotating rod (13) in a transmission manner, the end of the rotating rod (13) is hinged with a rotating block (14), a movable frame (15) is welded at the end of a connecting plate (17), a first sliding groove (16) matched with the rotating block (14) is formed in the movable frame (15), two second fixing seats (18) are fixedly connected to the connecting plate (17), a connecting rod (19) is rotatably connected between the two second fixing seats (18), and a driving connecting rod (19) is arranged in the buffer box (5) and rotates.

3. The no dead angle check valve of claim 2, characterized in that, the rotation piece includes first fixing base (7), first fixing base (7) is located the baffle-box (5) inner chamber, one first fixing base (7) tip is provided with second driving motor (8), the output transmission of second driving motor (8) is connected with lead screw (9), the swivel nut (10) that closes is connected with on lead screw (9), be equipped with rack (11) on swivel nut (10), the rigid coupling has gear (20) with rack (11) meshing on connecting rod (19), be equipped with the spacing portion spacing to rack (11) on connecting plate (17), lead screw (9) axis and connecting rod (19) axis set up for the slope.

4. Dead-angle-free check valve according to claim 3, characterized in that the limiting part comprises a second sliding groove (21) formed on the connecting plate (17), and the second sliding groove (21) is matched with the shape of the connecting plate (17).

5. The dead-angle-free check valve according to claim 1, characterized in that a buffer table (23) is installed in the inner cavity of the valve body (1), and a buffer member for buffering the valve flap (3) is arranged outside the buffer table (23).

6. Dead-angle-free non-return valve according to claim 5, characterized in that the buffer member comprises a stop collar (27) fixed on the outside of the buffer table (23), and the buffer table (23) is elastically connected with a second buffer block (25) through a spring (24).

7. Dead-end-free non-return valve according to claim 6, characterized in that a telescopic sleeve (26) is provided in the spring (24).

8. Dead-corner-free non-return valve according to claim 2 or 3, characterized in that the end of the connecting rod (19) is provided with a first buffer block (22) of rubber material.