Stop check valve

Abstract

The utility model discloses a stop check valve which comprises a valve body, the top of the valve body is fixedly connected with a fixed seat, the top of the fixed seat is provided with a mounting seat, the fixed seat is fixedly connected with a plurality of screws, and the position, close to the bottom, of a mounting frame is provided with a mounting hole. The rocking handle is firstly rotated, the rocking handle drives the lead screw to rotate in an inner cavity of the bearing and the third nut, the lead screw drives the movable plate to move in the direction away from the rocking wheel relative to the third nut, the movable plate drives the non-slip mat to move to be away from the rocking wheel, then rotation of the rocking handle is stopped, fixing of the rocking wheel is released, and then the rocking wheel is rotated to close and open the valve body. After the operation of the rocking wheel is completed, the rocking handle is rotated reversely, so that the movable plate drives the non-slip mat to move towards the rocking wheel until the non-slip mat is attached to the outer side edge of the rocking wheel, the rocking wheel is fixed, rotation caused by rotation and accidental touch of the rocking wheel is avoided, and use of the valve is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of check valves, in particular to a stop check valve. Background Art

[0002] A stop check valve is a valve in which the closing member moves along the center line of the valve seat to prevent the backflow of the medium. However, the existing marine external thread high-pressure stop check valve has disadvantages during use. It does not have the function of filtering debris, and there is a problem that debris enters the inside of the stop check valve and damages the valve. At the same time, it does not have the function of locking the rotating disk of the valve. There is a situation where the rotating disk rotates or accidentally touches, resulting in a poor valve closing effect, affecting the use of the valve. For this reason, we propose a marine external thread high-pressure stop check valve.

[0003] The existing Chinese patent CN215110701U discloses a marine external thread high-pressure stop check valve, comprising a valve body, a support frame is provided at the upper end of the valve body, a rotating disk is provided at the upper end of the support frame, a threaded valve stem is provided between the rotating disk and the valve body, a water outlet is provided on the left side of the valve body, a water inlet is provided at the right end of the valve body, a groove is provided inside the port of the water inlet, an internal threaded hole is provided on the internal surface of the groove, a connecting disk is provided in the groove, a filter screen is provided in the middle of the surface of the connecting disk, and through holes are provided on the surface of the connecting disk around the filter screen, and screws are provided in the through holes. The marine external thread high-pressure stop check valve described in the utility model has a good debris filtering effect, preventing debris from entering the valve body and damaging the valve, and at the same time has a good valve rotating disk locking effect, preventing rotation and accidental collision, which affect the use of the valve.

[0004] In actual use, the above patent limits the position of the rotating disk by putting the locking buckle on the side end of the rotating disk to prevent the rotating disk from rotating back and accidentally hitting the rotating disk. However, with this fixing method, when the fixed beam on the inner side of the rotating disk is located at the position of the locking buckle, the locking buckle cannot fix the rotating disk, so the device has a small scope of application. Utility Model Content

[0005] The technical problem solved by the utility model is to overcome the defects of the prior art and provide a stop check valve.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A stop check valve comprises a valve body, the top of the valve body is fixedly connected to a fixing seat, the top of the fixing seat is provided with a mounting seat, a plurality of screws are fixedly connected to the fixing seat, the top end of the screw movably passes through the fixing seat and is sleeved with a first nut, a valve stem is inserted into the top of the fixing seat, the top of the valve stem is fixedly connected to a rocker, a mounting frame is provided at the top of the fixing seat near the right side, a mounting hole is opened on the fixing frame near the bottom, the top end of the adjacent screw movably passes through the mounting hole, and is sleeved with a gasket and a second nut, a third nut is fixedly connected to the right side of the fixing frame near the top, a rocking handle is provided on the right side of the fixing frame, a screw is fixedly connected to the left side of the rocking handle, the left end of the screw passes through the third nut and is fixedly sleeved with a bearing, a connecting block is fixedly connected to the left side of the bearing, and a movable plate is fixedly connected to the left side of the connecting block.

[0008] Preferably, flanges are fixedly sleeved on both left and right sides of the valve body, and a plurality of flange holes are opened on the flanges.

[0009] Preferably, the cross section of the movable plate is arc-shaped, and the arc-shaped opening faces the rocking wheel.

[0010] Preferably, a non-slip pad is fixedly connected to the left side of the movable plate, and the non-slip pad is in contact with the outer edge of the rocking wheel.

[0011] Preferably, a limiting column is fixedly connected to the right side of the movable plate near the bottom, a limiting hole is provided on the mounting frame, and the right end of the limiting column movably passes through the limiting hole.

[0012] Preferably, the cross section of the mounting frame is L-shaped, and the shorter side of the L-shaped structure is parallel to the rocker.

[0013] Preferably, the bottom of the gasket fits with the mounting frame, and the top of the gasket fits with the bottom of the second nut.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The utility model is a stop check valve. Before rotating the rocking wheel, the rocking handle is rotated first, and the rocking handle drives the screw to rotate in the inner cavity of the bearing and the third nut, and the screw drives the movable plate to move in the direction away from the rocking wheel relative to the third nut, and the movable plate drives the anti-skid pad to move away from the rocking wheel, and then the rocking handle is stopped to unlock the fixation of the rocking wheel, and then the rocking wheel is rotated to close and open the valve body. After the rocking wheel operation is completed, the rocking handle is rotated in the opposite direction, so that the movable plate drives the anti-skid pad to move toward the rocking wheel until the anti-skid pad fits with the outer edge of the rocking wheel, so as to fix the rocking wheel, prevent the rocking wheel from rotating due to rotation and accidental collision, and thus ensure the use of the valve;

[0016] 2. The utility model provides a stop check valve. During use, the limit column and the limit hole are arranged so that the movable plate moves within a limited track, thereby ensuring the normal operation of the component. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional diagram of the utility model;

[0018] Figure 2 A three-dimensional diagram of the component mounting frame of the utility model;

[0019] Figure 3 For this utility model Figure 2 Exploded diagram.

[0020] Numbers in the figure: 1. valve body; 2. flange; 3. flange hole; 4. fixing seat; 5. mounting seat; 6. screw; 7. first nut; 8. valve stem; 9. rocker; 10. mounting frame; 11. gasket; 12. second nut; 13. rocker; 14. third nut; 15. screw; 16. bearing; 17. connecting block; 18. movable plate; 19. anti-slip pad; 20. limit column; 21. limit hole; 22. mounting hole. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-3 The utility model provides a technical solution: a stop check valve, comprising a valve body 1, flanges 2 are fixedly sleeved on both left and right sides of the valve body 1, a plurality of flange holes 3 are opened on the flange 2, a fixing seat 4 is fixedly connected to the top of the valve body 1, a mounting seat 5 is provided on the top of the fixing seat 4, a plurality of screws 6 are fixedly connected to the fixing seat 4, the top of the screw 6 movably passes through the mounting seat 5, and is sleeved with a first nut 7, a valve stem 8 is inserted on the top of the mounting seat 5, a rocker 9 is fixedly connected to the top of the valve stem 8, a mounting frame 10 is provided near the right side of the top of the mounting seat 5, a mounting hole 22 is opened near the bottom of the mounting frame 10, the top of the adjacent screw 6 movably passes through the mounting hole 22, and is sleeved with a gasket 11 and a second nut 12, the cross section of the mounting frame 10 is L-shaped, and the shorter side of the L-shaped structure is parallel to the rocker 9, the bottom of the gasket 11 is in contact with the mounting frame 10, and the top of the gasket 11 is in contact with the bottom of the second nut 12;

[0023] A third nut 14 is fixedly connected to the right side of the mounting frame 10 near the top, a crank 13 is provided on the right side of the mounting frame 10, a screw rod 15 is fixedly connected to the left side of the crank 13, the left end of the screw rod 15 passes through the third nut 14, and a bearing 16 is fixedly sleeved thereon, a connecting block 17 is fixedly connected to the left side of the bearing 16, a movable plate 18 is fixedly connected to the left side of the connecting block 17, the cross-section of the movable plate 18 is arc-shaped, and the arc-shaped opening faces the rocking wheel 9, a non-slip pad 19 is fixedly connected to the left side of the movable plate 18, the non-slip pad 19 is fitted with the outer edge of the rocking wheel 9, a limiting column 20 is fixedly connected to the right side of the movable plate 18 near the bottom, a limiting hole 21 is provided on the mounting frame 10, and the right end of the limiting column 20 movably passes through the limiting hole 21.

[0024] Working principle: During use, the valve body 1 is connected to the connecting pipe through the flange 2, and the valve body 1 is closed and opened by rotating the rocking wheel 9. Before rotating the rocking wheel 9, the crank handle 13 is rotated first, and the crank handle 13 drives the screw rod 15 to rotate in the inner cavity of the bearing 16 and the third nut 14, and the screw rod 15 drives the movable plate 18 to move relative to the third nut 14 in the direction away from the rocking wheel 9, and the movable plate 18 drives the limiting column 20 to move in the inner cavity of the limiting hole 21, and the movable plate 18 drives the anti-skid pad 19 to move away from the rocking wheel 9, and then the rotation of the crank handle 13 is stopped to release the fixation of the rocking wheel 9, and then the rocking wheel 9 is rotated to close and open the valve body 1. After the operation of the rocking wheel 9 is completed, the crank handle 13 is rotated in the opposite direction, so that the movable plate 18 drives the anti-skid pad 19 to move toward the rocking wheel 9 until the anti-skid pad 19 and the outer edge of the rocking wheel 9 are in contact with each other, so as to fix the rocking wheel 9 to prevent the rocking wheel 9 from rotating and rotating due to accidental collision, thereby ensuring the use of the valve.

[0025] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0026] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0027] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0029] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0030] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A stop check valve, comprising a valve body, characterized in that: The top of the valve body is fixedly connected to a fixing seat, the top of the fixing seat is provided with a mounting seat, a plurality of screws are fixedly connected to the fixing seat, the top end of the screw movably passes through the mounting seat and is sleeved with a first nut, a valve stem is inserted into the top of the mounting seat, the top of the valve stem is fixedly connected to a rocker, a mounting frame is provided at the top of the mounting seat near the right side, a mounting hole is opened on the mounting frame near the bottom, the top end of the adjacent screw movably passes through the mounting hole, and is sleeved with a gasket and a second nut, a third nut is fixedly connected to the right side of the mounting frame near the top, a rocking handle is provided on the right side of the mounting frame, a screw rod is fixedly connected to the left side of the rocking handle, the left end of the screw rod passes through the third nut and is fixedly sleeved with a bearing, a connecting block is fixedly connected to the left side of the bearing, and a movable plate is fixedly connected to the left side of the connecting block.

2. A stop check valve according to claim 1, characterized in that: Flange plates are fixedly sleeved on both left and right sides of the valve body, and a plurality of flange holes are opened on the flange plates.

3. A stop check valve according to claim 1, characterized in that: The cross section of the movable plate is arc-shaped, and the arc-shaped opening faces the rocking wheel.

4. A stop check valve according to claim 1, characterized in that: The left side of the movable plate is fixedly connected with an anti-skid pad, and the anti-skid pad is in contact with the outer edge of the rocking wheel.

5. A stop check valve according to claim 1, characterized in that: A limiting column is fixedly connected to the right side of the movable plate near the bottom, a limiting hole is provided on the mounting frame, and the right end of the limiting column movably passes through the limiting hole.

6. A stop check valve according to claim 5, characterized in that: The cross section of the mounting frame is L-shaped, and the shorter side of the L-shaped structure is parallel to the rocking wheel.

7. A stop check valve according to claim 1, characterized in that: The bottom of the gasket is in contact with the mounting frame, and the top of the gasket is in contact with the bottom of the second nut.

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