Impact-resistant check valve
By adopting a combined structure of annular pad and spring in the check valve, the problems of poor sealing of the check valve and valve disc impact are solved, and better sealing and service life are achieved.
Patent Information
- Application Number
- CN202421256160.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-04
- Publication Date
- 2025-02-28
- Estimated Expiration
- 2034-06-04
AI Technical Summary
The existing check valves have poor sealing when closed, and are prone to valve impact under the action of medium, affecting service life.
An impact-resistant check valve is designed, adopting a combined structure of an annular pad and a spring. The annular pad seals and limits the stop ring and the movable disc, and the spring buffers the movable disc to avoid impact.
It improves the sealing of the check valve when closed, avoids impact of the valve disc under the action of the medium, extends the service life, and prevents the medium from flowing back.
Smart Images
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Abstract
Description
Technical Field
[0001] The utility model relates to the field of check valves, in particular to an impact-resistant check valve. Background Art
[0002] A check valve is a valve whose opening and closing part is a circular disc and which relies on its own weight and medium pressure to produce movement to block the backflow of the medium. It belongs to the category of automatic valves. A check valve is also called a non-return valve, a one-way valve, a reflux valve or an isolation valve. The disc movement modes are divided into lifting type and swing type.
[0003] The lift check valve is similar in structure to the stop valve, except that it lacks a valve stem that drives the valve disc. The swing check valve has an inclined valve disc that can rotate around an axis. Its working principle is similar to that of the lift check valve. The check valve is often used as a bottom valve in a pumping device to prevent water backflow. The check valve and stop valve are used in combination to achieve a safe isolation effect.
[0004] However, when the existing check valve is used, the sealing performance when the check valve is closed is poor, and when the check valve is opened or closed under the action of the conveying medium, the valve disc in the check valve is easy to impact the inside of the check valve, causing the valve disc in the check valve to hit the corresponding position inside the check valve. After long-term use, the service life of the check valve will be affected, which is not conducive to the use of the check valve.
[0005] Therefore, we propose a shock-resistant check valve. Utility Model Content
[0006] The purpose of the utility model is to provide an impact-resistant check valve to solve the problems raised in the above background technology.
[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0008] A shock-resistant check valve comprises a check valve body, wherein fixing rods are fixed to the middle of the inner ring surfaces on both sides of the check valve body, a fixing block is commonly fixed between the opposite ends of the fixing rods, a fixing ring is fixed to one end of the inner ring surface of the check valve body, a retaining ring is fixed to the side of the inner ring surface of the fixing ring away from the fixing block, an annular pad is fixed to the surface of the retaining ring on the side close to the fixing block, a spring is fixed to the surface of the fixed block on the side close to the annular pad, and a movable disk is fixed to the end of the spring close to the annular pad corresponding to the annular pad.
[0009] As a further solution of the utility model: the edge portion of the surface of one side of the movable disk close to the annular pad is in a matching and fitting state with the corresponding position on the opposite surface of the annular pad, the corresponding positions on the opposite surface of the annular pad and the retaining ring are in a matching and fitting state, and the outer ring surface of the movable disk is in a matching and fitting state with the corresponding positions on the inner ring surface of the fixed ring.
[0010] By adopting the above technical solution: the provision of the annular gasket is helpful to seal and limit the space between the retaining ring and the movable disk.
[0011] As a further solution of the utility model: a moving rod is fixed on the inner side of the spring in the middle of the surface of one side of the moving disk close to the fixed block, and the end of the moving rod away from the moving disk passes through the two side surfaces of the middle part of the fixed block, and a matching first retention hole is opened on the fixed block corresponding to the moving rod.
[0012] By adopting the above technical solution: the provision of the moving rod is helpful to limit the position between the moving disk and the fixed block.
[0013] As a further solution of the utility model: a connecting block is installed in the middle of the upper side of the check valve body, the connecting block passes through the inner ring surface and the outer ring surface at the corresponding position on the check valve body, a matching second retaining hole is opened on the corresponding connecting block on the check valve body, and a third retaining hole is opened in the middle of the connecting block.
[0014] By adopting the above technical solution: the setting of the check valve body can fix and limit the connection block.
[0015] As a further solution of the utility model: the third retaining hole passes through the upper surface and the lower surface of the middle part of the connecting block, a matching sealing ring is fixed in the third retaining hole on the connecting block, a matching limiting rod is inserted into the inner side of the sealing ring for sliding along the vertical direction, and a matching second limiting hole is opened in the middle part of the fixed block corresponding to the limiting rod.
[0016] By adopting the above technical solution: the provision of the sealing ring is helpful to seal and limit the third retaining hole on the connecting block and the limiting rod.
[0017] As a further solution of the utility model: the second limiting hole passes through the upper surface and the lower surface of the middle part of the fixed block, and a matching first limiting hole is opened in the middle part of the corresponding limiting rod away from the end of the moving rod away from the moving disk, and the first limiting hole passes through the upper and lower sides of the corresponding position on the moving rod.
[0018] By adopting the above technical solution: the provision of the second limiting hole is helpful to limit the position between the fixing block and the limiting rod.
[0019] As a further solution of the utility model: the four corners of the upper surface of the connecting block are fixed with connecting rods in a vertical state, and a connecting plate is fixed between the upper end surfaces of the connecting rods. A screw is fixed to the upper end surface of the limiting rod. The screw passes through the upper and lower surfaces of the middle part of the connecting plate and is threadedly connected with the middle part of the connecting plate. A rotating disk is fixed to the upper end surface of the screw.
[0020] By adopting the above technical solution: the provision of the rotating disk helps to rotate the screw rod, making it easier to use the screw rod.
[0021] As a further solution of the utility model: mounting rings are fixed to the two end surfaces of the check valve body, and a plurality of bolts are threadedly inserted in the edge portions of the mounting rings at intervals along the circumferential direction and in the horizontal direction, and the bolts penetrate the two side surfaces at corresponding positions on the corresponding mounting rings.
[0022] By adopting the above technical solution: the provision of the bolts helps to install and limit the mounting ring, making it easier to use the mounting ring.
[0023] Compared with the prior art, the beneficial effects of the utility model are:
[0024] 1. In the utility model, the annular gasket can seal between the retaining ring and the movable disk, and the annular gasket and the spring help to buffer the movable disk. When the check valve body is closed during use, it has good sealing performance. When the check valve body is opened or closed under the action of the conveying medium, the movable disk can be prevented from impacting the inside of the check valve body, and the movable disk can be prevented from colliding with the corresponding position inside the check valve body, so as to ensure the service life of the check valve body and help to use the check valve body.
[0025] 2. In the utility model, when the screw rotates, it will move downward along the connecting plate that is threadedly connected. When the screw moves downward, it can drive the limit rod to move downward, so that the limit rod is inserted into the first limit hole on the moving rod and the second limit hole on the fixed block. The limit rod can limit the moving rod and the fixed block, which can prevent the moving rod from moving and prevent the moving disk from moving and opening, so as to facilitate the replacement and maintenance of the discharge pipe inside the check valve body or the outside, and avoid leakage of materials when replacing and repairing the discharge pipe inside the check valve body or the outside. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] Figure 1 It is a schematic diagram of the structure of the utility model;
[0027] Figure 2 This is a schematic diagram of the connecting rod structure of the utility model;
[0028] Figure 3 This is a schematic diagram of the connection block structure of the utility model;
[0029] Figure 4 This is a schematic diagram of the limit rod structure of the utility model;
[0030] Figure 5 This is a schematic diagram of the fixing rod structure of the utility model;
[0031] Figure 6 This is a schematic diagram of the fixed block structure of the utility model.
[0032] In the figure: 1. check valve body; 2. mounting ring; 3. bolt; 4. fixing ring; 5. retaining ring; 6. annular gasket; 7. movable disk; 8. movable rod; 9. spring; 10. fixing rod; 11. fixing block; 12. first retaining hole; 13. second retaining hole; 14. third retaining hole; 15. first limiting hole; 16. second limiting hole; 17. connecting block; 18. sealing ring; 19. connecting rod; 20. connecting plate; 21. screw; 22. limiting rod; 23. rotating disk. DETAILED DESCRIPTION
[0033] 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.
[0034] See also Figures 1 to 6 In the embodiment of the utility model, an impact-resistant check valve includes a check valve body 1, a fixing rod 10 is fixed to the middle of the inner ring surface on both sides of the check valve body 1, a fixing block 11 is fixed between the opposite ends of the fixing rod 10, a fixing ring 4 is fixed to one end of the inner ring surface of the check valve body 1, a retaining ring 5 is fixed to the side of the inner ring surface of the fixing ring 4 away from the fixing block 11, a ring gasket 6 is fixed to the surface of the retaining ring 5 on one side close to the fixing block 11, a spring 9 is fixed to the surface of the fixing block 11 on one side close to the ring gasket 6, and the end of the spring 9 close to the ring gasket 6 corresponds to the fixed ring gasket 6. A movable disk 7 is provided, and an annular gasket 6 can seal between the retaining ring 5 and the movable disk 7. The annular gasket 6 and the spring 9 help to buffer the movable disk 7. When the check valve body 1 is closed during use, it has good sealing performance. When the check valve body 1 is opened or closed under the action of the conveying medium, the movable disk 7 can be prevented from impacting the inside of the check valve body 1, and the movable disk 7 can be prevented from hitting the corresponding position inside the check valve body 1, so as to ensure the service life of the check valve body 1 and help to use the check valve body 1.
[0035] Among them, the edge part of the surface of one side of the movable disk 7 close to the annular pad 6 is in a matching and fitting state with the corresponding position on the opposite surface of the annular pad 6, the annular pad 6 is in a matching and fitting state with the corresponding position on the opposite surface of the retaining ring 5, the outer ring surface of the movable disk 7 is in a matching and fitting state with the corresponding position on the inner ring surface of the fixed ring 4, and the annular pad 6 helps to seal and limit the retaining ring 5 and the movable disk 7; a movable rod 8 is fixed on the inner side of the spring 9 in the middle part of the surface of one side of the movable disk 7 close to the fixed block 11, and the end of the movable rod 8 away from the movable disk 7 passes through the two side surfaces of the middle part of the fixed block 11, and a matching first retention hole 12 is opened on the fixed block 11 corresponding to the movable rod 8, and the movable rod 8 helps to limit the movable disk 7 and the fixed block 11.
[0036] A connecting block 17 is installed in the middle of the upper side of the check valve body 1, and the connecting block 17 penetrates the inner ring surface and the outer ring surface at the corresponding position on the check valve body 1. A matching second retaining hole 13 is opened on the check valve body 1 corresponding to the connecting block 17, and a third retaining hole 14 is opened in the middle of the connecting block 17. The check valve body 1 can fix and limit the connecting block 17; the third retaining hole 14 penetrates the upper surface and the lower surface of the middle part of the connecting block 17, and a matching sealing ring 18 is fixed in the third retaining hole 14 on the connecting block 17, and a matching sealing ring 18 is inserted and slidably inserted in the inner side of the sealing ring 18 in the vertical direction. A fitting limit rod 22, a matching second limit hole 16 is opened in the middle of the fixed block 11 corresponding to the limit rod 22, and the sealing ring 18 helps to seal and limit the third retention hole 14 on the connecting block 17 and the limit rod 22; the second limit hole 16 passes through the upper surface and the lower surface of the middle of the fixed block 11, and a matching first limit hole 15 is opened in the middle of the moving rod 8 away from the moving disk 7 The corresponding limit rod 22, the first limit hole 15 passes through the upper and lower sides of the corresponding position on the moving rod 8, and the second limit hole 16 helps to limit the fixed block 11 and the limit rod 22.
[0037] A vertical connecting rod 19 is fixed to the four corners of the upper surface of the connecting block 17, a connecting plate 20 is fixed between the upper end surfaces of the connecting rod 19, a screw 21 is fixed to the upper end surface of the limiting rod 22, the screw 21 passes through the upper and lower surfaces of the middle part of the connecting plate 20 and is threadedly connected with the middle part of the connecting plate 20, a rotating disk 23 is fixed to the upper end surface of the screw 21, the rotating disk 23 helps to rotate the screw 21, and the screw 21 is convenient to use; mounting rings 2 are fixed to the two end surfaces of the check valve body 1, and a plurality of bolts 3 are threadedly inserted in the edge portions of the mounting ring 2 at intervals along the circumferential direction and in the horizontal direction, the bolts 3 pass through the two side surfaces of the corresponding positions on the corresponding mounting ring 2, the bolts 3 help to install and limit the mounting ring 2, and the mounting ring 2 is convenient to use.
[0038] The working principle of the utility model is: during use, the mounting ring 2 is respectively corresponded to the corresponding positions on the external material conveying pipeline, and the mounting ring 2 is further installed between the corresponding positions on the external material conveying pipeline through the bolts 3. The bolts 3 can fix and limit the mounting ring 2, which is convenient for stable use of the mounting ring 2. The mounting ring 2 can support and limit the check valve body 1 and the various components assembled on the check valve body 1, which is helpful for stable use of the check valve body 1 and the various components assembled on the check valve body 1.
[0039] When it is necessary to convey the material, the rotating disk 23 is rotated. When the rotating disk 23 rotates, it can drive the screw 21 to rotate, so that the screw 21 moves upward along the position where it is threadedly connected on the connecting plate 20. The check valve body 1 can fix and limit the connecting block 17 in the second retention hole 13, which is convenient for the stable use of the connecting block 17. The connecting block 17 can fix and limit the connecting rod 19, which is helpful for the stable use of the connecting rod 19. The connecting rod 19 can fix and limit the connecting plate 20, which is convenient for the stable use of the connecting plate 20. The connecting plate 20 can limit the screw 21, which is helpful When the screw rod 21 is used, when the screw rod 21 moves upward, it can drive the limiting rod 22 to move upward. The connecting block 17 can limit the limiting rod 22 through the sealing ring 18 in the third retaining hole 14, so as to stably move the limiting rod 22. The sealing ring 18 can seal the third retaining hole 14 on the connecting block 17 and the limiting rod 22. After the limiting rod 22 is moved upward along the first limiting hole 15 on the moving rod 8 and the second limiting hole 16 on the fixed block 11 to the outside of the first limiting hole 15 and the second limiting hole 16, the limiting rod 22 will cancel the limitation between the moving rod 8 and the fixed block 11.
[0040] When the medium is transported, the pressure of the transported medium will push the movable disk 7 so that the movable disk 7 moves toward the fixed block 11. When the movable disk 7 moves, it can drive the movable rod 8 to move along the first retention hole 12 on the fixed block 11. The check valve body 1 can fix and limit the fixed rod 10, which is conducive to the stable use of the fixed rod 10. The fixed rod 10 can fix and limit the fixed block 11, which is convenient for the stable use of the fixed block 11. The fixed block 11 can limit the movable disk 7 through the first retention hole 12 and the movable rod 8, which is conducive to the stable movement of the movable disk 7. When the movable disk 7 moves, it will squeeze the spring 9, and the spring 9 can buffer the movable disk 7 to avoid collision between the movable disk 7 and the inside of the check valve. After the movable disk 7 moves to separate from the annular pad 6 and the fixed ring 4, the medium to be transported will be transported through the gap between the movable disk 7 and the annular pad 6 and the fixed ring 4.
[0041] After the medium is conveyed, the movable disk 7 moves toward the annular pad 6 on the baffle ring 5 under the action of the elastic force of the spring 9 itself. The annular pad 6 can buffer the movable disk 7 to prevent the movable disk 7 from colliding with the baffle ring 5, so as to ensure the impact resistance of the check valve when it is used. After the movable disk 7 and the annular pad 6 are in contact, the annular pad 6 can seal the fixed ring 4 and the baffle ring 5 and the movable disk 7, so as to prevent the conveyed medium from flowing back.
[0042] When it is necessary to replace and repair the discharge pipe inside or outside the check valve body 1, the rotating disk 23 is rotated, and the rotating disk 23 drives the screw 21 to rotate so that the screw 21 moves downward along the threaded connecting plate 20, and when the screw 21 moves downward, it can drive the limiting rod 22 to move downward, so that the limiting rod 22 is inserted into the first limiting hole 15 on the moving rod 8 and the second limiting hole 16 on the fixed block 11, and the limiting rod 22 can limit the moving rod 8 and the fixed block 11, so as to prevent the moving rod 8 from moving and prevent the moving disk 7 from moving open, so as to facilitate the replacement and repair of the discharge pipe inside or outside the check valve body 1, and avoid material leakage when replacing and repairing the discharge pipe inside or outside the check valve body 1.
[0043] During use, the check valve body 1 has good sealing when closed. When the check valve body 1 is opened or closed under the action of the conveying medium, the moving disk 7 can be prevented from impacting the interior of the check valve body 1, and the moving disk 7 can be prevented from hitting the corresponding position inside the check valve body 1, so as to ensure the service life of the check valve body 1 and facilitate the use of the check valve body 1.
[0044] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.
Claims
1. An impact-resistant check valve, comprising a check valve body (1), characterized in that: A fixing rod (10) is fixed to the middle of the inner ring surface on both sides of the check valve body (1), a fixing block (11) is fixed between the opposite ends of the fixing rod (10), a fixing ring (4) is fixed to one end of the inner ring surface of the check valve body (1), a retaining ring (5) is fixed to the side of the inner ring surface of the retaining ring (4) away from the fixing block (11), an annular pad (6) is fixed to the side surface of the retaining ring (5) close to the fixing block (11), a spring (9) is fixed to the side surface of the fixing block (11) close to the annular pad (6), and a movable disk (7) is fixed to the end of the spring (9) close to the annular pad (6) corresponding to the annular pad (6).
2. The impact-resistant check valve according to claim 1, characterized in that: The edge portion of the surface of one side of the movable plate (7) close to the annular pad (6) is in a matching and fitting state with the corresponding position on the opposite surface of the annular pad (6), the corresponding position on the opposite surface of the annular pad (6) and the retaining ring (5) is in a matching and fitting state, and the outer ring surface of the movable plate (7) is in a matching and fitting state with the corresponding position on the inner ring surface of the fixed ring (4).
3. The impact-resistant check valve according to claim 2, characterized in that: A moving rod (8) is fixed on the inner side of the spring (9) in the middle of the surface of one side of the moving plate (7) close to the fixed block (11); one end of the moving rod (8) away from the moving plate (7) penetrates the two side surfaces of the middle part of the fixed block (11); and a matching first retention hole (12) is opened on the fixed block (11) corresponding to the moving rod (8).
4. The impact-resistant check valve according to claim 3, characterized in that: A connecting block (17) is installed in the middle of the upper side of the check valve body (1); the connecting block (17) penetrates the inner ring surface and the outer ring surface at corresponding positions on the check valve body (1); a matching second retaining hole (13) is opened on the check valve body (1) corresponding to the connecting block (17); and a third retaining hole (14) is opened in the middle of the connecting block (17).
5. The impact-resistant check valve according to claim 4, characterized in that: The third retaining hole (14) passes through the upper surface and the lower surface of the middle part of the connecting block (17); a matching sealing ring (18) is fixed in the third retaining hole (14) on the connecting block (17); a matching limiting rod (22) is inserted and slidably inserted into the inner side of the sealing ring (18) along the vertical direction; and a matching second limiting hole (16) is opened in the middle part of the fixed block (11) corresponding to the limiting rod (22).
6. The impact-resistant check valve according to claim 5, characterized in that: The second limiting hole (16) passes through the upper surface and the lower surface of the middle part of the fixed block (11); a matching first limiting hole (15) is provided on the corresponding limiting rod (22) in the middle part of the moving rod (8) away from the moving plate (7); and the first limiting hole (15) passes through the upper side and the lower side of the corresponding position on the moving rod (8).
7. The impact-resistant check valve according to claim 6, characterized in that: The four corners of the upper surface of the connecting block (17) are fixed with connecting rods (19) in a vertical state, and a connecting plate (20) is fixed between the upper end surfaces of the connecting rods (19). A screw rod (21) is fixed to the upper end surface of the limiting rod (22). The screw rod (21) passes through the upper surface and the lower surface of the middle part of the connecting plate (20) and is threadedly connected with the middle part of the connecting plate (20). A rotating disk (23) is fixed to the upper end surface of the screw rod (21).
8. The impact-resistant check valve according to claim 7, characterized in that: Mounting rings (2) are fixed to both end surfaces of the check valve body (1), and a plurality of bolts (3) are threadedly inserted in the horizontal direction at intervals along the circumferential direction on the edge of the mounting ring (2), and the bolts (3) penetrate the two side surfaces at corresponding positions on the corresponding mounting ring (2).