Bidirectional controllable check valve

Abstract

The bidirectional controllable check valve comprises a valve body, a supporting plate is arranged in the valve body and divides the internal space of the valve body, an open hole is formed in the supporting plate, a plugging head is arranged on the open hole, a regulation and control head is arranged on the side, away from the open hole, of the plugging head, a regulation and control screw rod is in threaded connection with the regulation and control head, and the regulation and control screw rod rotates on the valve body. One end of the regulation and control screw rod is located outside the valve body, and a plugging spring is arranged between the plugging head and the regulation and control head. Downward pressure is applied to the plugging head through the plugging spring, one-way flowing is achieved, when reverse conduction is needed, the regulation and control screw rod is rotated to drive the regulation and control head to move upwards, the downward pressure of the plugging spring is gradually reduced till the pressure of the plugging spring becomes zero, and when the regulation and control head continues to move upwards, one-way flowing is achieved. The regulation head moves upwards to drive the plugging head to move upwards through the plugging spring, so that plugging of the open hole is relieved, and the valve body is conducted; the one-way limitation can be relieved only by rotating the regulating screw rod, and convenience and rapidness are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of valves, in particular to a two-way controllable check valve. Background Art

[0002] Single-well pipelines must be installed with a check valve before entering the transfer station. This is to prevent leakage from the single-well inlet valve when the single-well pipeline is out of service, which could cause crude oil in the station to flow back into the single-well pipeline. However, special operations on single-well pipelines, such as using the inlet pipeline to supply water to a single well or reverse sweeping, will be hindered by the check valve. Therefore, the valve plate inside the check valve must be removed before the operation can be carried out. When removing the valve plate, the pipeline must first be swept with salt water, followed by pressure relief, removal of the check valve gland, removal of the valve plate, and finally, reinstallation of the gland before water supply and reverse sweeping operations can be carried out.

[0003] Chinese Patent Publication No. CN221423953U discloses a bidirectional controllable one-way valve, comprising a valve body having a valve cavity and two flow channels located on either side of the valve cavity and communicating with the valve cavity. A pin is rotatably connected to the inner wall of the valve cavity and passes above a flow channel opening. The rotation axis of the pin is horizontal and perpendicular to the axis of the flow channel. At least one end of the pin extends outside the valve body. An annular valve seat is formed at the edge where the flow channel opening below the pin meets the valve cavity. The pin is connected to a valve disc that fits the valve seat in a form of affixed fit. The valve disc rotates synchronously with the pin, and the trajectory of the valve disc's free swinging and falling passes through the valve seat. The valve can be used as a one-way valve, and the pin can be directly rotated to drive the valve disc to open, thereby removing the restriction of one-way flow and facilitating water supply and back-sweeping operations.

[0004] Although the above patent can realize the functions of unidirectional flow and restriction, its unidirectional flow only relies on the gravity of the valve disc to achieve closure with the valve seat. When the reverse pressure is small, reverse penetration is possible from the lower edge of the valve disc. Summary of the Invention

[0005] The present invention provides a two-way controllable check valve to solve the problems raised in the background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0007] A two-way controllable one-flow valve comprises a valve body, a support plate is provided in the valve body, the support plate divides the internal space of the valve body, an opening is provided on the support plate, a sealing head is provided on the opening, a regulating head is provided on the side of the sealing head away from the opening, a regulating screw is threadedly connected to the regulating head, the regulating screw rotates on the valve body, and one end of the regulating screw is located outside the valve body, and a sealing spring is provided between the sealing head and the regulating head.

[0008] Preferably, the support plate is provided with a regulating frame, the regulating frame is located outside the opening, the plugging head is provided with a protruding sliding ridge, the plugging head is slidably connected to the regulating frame through the sliding ridge thereon, and a cavity capable of accommodating liquid flow is provided between the regulating frame and the plugging head;

[0009] A limiting slide bar is provided on the lower side of the regulating head, and the limiting slide bar is slidably inserted into the regulating frame.

[0010] Preferably, the two ends of the internal space of the valve body are an outlet and an inlet respectively, the inlet is located on the side of the support plate away from the plugging head, and the outlet is located on the side close to the plugging head.

[0011] Preferably, a regulating plate is provided on the valve body, and the regulating plate is arranged parallel to the support plate;

[0012] The regulating screw is rotatably connected to the regulating plate;

[0013] One end of the regulating screw located outside the valve body is fixedly connected with a handle.

[0014] Preferably, a maintenance component is provided in the regulating plate, the maintenance component is sleeved on the regulating screw, and the maintenance component is used to connect the regulating plate and the regulating screw.

[0015] Preferably, the maintenance assembly includes a blocking shell, the blocking shell is fixedly connected to the regulating plate, a rotating frame is provided in the blocking shell, a rotating ring is provided in the rotating frame, the rotating ring is rotatably connected to the rotating frame, the rotating ring is fixedly connected to the regulating screw, and the regulating screw passes through the blocking shell;

[0016] The blocking shell is provided with a cover plate, the cover plate is provided with a fixing ring sleeve, and the fixing ring sleeve is pressed onto the rotating ring.

[0017] Preferably, a sealing groove is provided on the blocking shell;

[0018] The cover plate is provided with a sealing strip;

[0019] The sealing strip is arranged corresponding to the sealing groove.

[0020] Preferably, an adjusting stud is rotatably connected to the blocking shell through a thread, one end of the adjusting stud located in the blocking shell is rotatably connected to a connecting plate, the connecting plate is slidably connected to the blocking shell, a first connecting rod is fixedly connected to the connecting plate, both ends of the first connecting rod are fixedly connected to a second connecting rod, and a third connecting rod is fixedly connected to the second connecting rod;

[0021] A limit block is provided on the cover plate;

[0022] The blocking shell is provided with a card slot corresponding to the limit card block;

[0023] The limit block and the slot are wedge-shaped;

[0024] The third connecting rod can be slidably connected to the limiting block.

[0025] Preferably, a second limiting hole is provided on the cover plate;

[0026] The blocking shell is provided with a first limiting hole;

[0027] The first limiting hole and the second limiting hole are provided correspondingly;

[0028] A fastening rod is inserted into the first limiting hole and the second limiting hole, and a locking head is provided at one end of the fastening rod located outside the cover plate;

[0029] A locking column is provided in the blocking shell;

[0030] The end of the third connecting rod is fixedly connected to a clamping plate;

[0031] The second connecting rod is provided with a linkage piece, and the linkage piece is provided with a clamping claw, and the clamping claw can be clamped to the fastening rod.

[0032] Preferably, a second oil tank is provided in the fixed ring sleeve, and a liquid storage ring is provided inside the second oil tank, and the liquid storage ring is in communication with the second oil tank;

[0033] A first oil tank is provided on the upper side of the second oil tank. The first oil tank and the second oil tank communicate with each other through a connecting pipe gap. The first oil tank is slidably connected to one end of the connecting pipe gap. An oil outlet hole is provided on the first oil tank.

[0034] Compared with the prior art, the present invention has at least the following beneficial effects:

[0035] The present invention applies downward pressure to the blocking head through the blocking spring to achieve one-way flow. Compared with the existing one-way closure achieved by gravity, the one-way closure of the present invention is more stable and can effectively avoid the problem of reverse penetration when reverse conduction is not required. When reverse conduction is required, the regulating screw is rotated to drive the regulating head upward, and the downward pressure of the blocking spring is gradually reduced until the pressure of the blocking spring becomes zero. When the regulating head continues to move upward, the upward movement of the regulating head will drive the blocking head upward through the blocking spring, thereby releasing the blockage of the opening and opening the valve body.

[0036] When releasing the one-way restriction, it can be done by simply turning the regulating screw, which is convenient and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0038] Figure 2 This is a schematic diagram of the maintenance component structure of the present invention;

[0039] Figure 3 This is a schematic diagram of the cover structure of the present invention;

[0040] Figure 4 This is a schematic diagram of the internal structure of the fixing ring sleeve of the present invention;

[0041] Figure 5 This is a schematic diagram of the sealing shell structure of the present invention;

[0042] Figure 6 It is a schematic diagram of the internal structure of the sealing shell of the present invention.

[0043] In the figure: 1, valve body; 2, outlet; 3, inlet; 4, support plate; 5, opening; 6, regulating frame; 7, plugging head; 8, plugging spring; 9, regulating head; 10, regulating plate; 11, regulating screw; 12, handle; 13, maintenance assembly; 14, plugging shell; 15, cover plate; 16, rotating ring; 17, rotating frame; 18, adjusting stud; 19, fixing ring; 20, first limit hole; 21, sealing strip; 22, limit Positioning block; 23. Second limiting hole; 24. Oil injection hole; 25. Liquid storage ring; 26. First oil tank; 27. Flexible card; 28. Connecting pipe gap; 29. ​​Card slot; 30. First connecting rod; 31. Second connecting rod; 32. Third connecting rod; 33. Connecting plate; 34. Card plate; 35. Positioning column; 36. Clamping claw; 37. Fastening rod; 38. Linkage plate; 39. Second oil tank; 40. Sealing groove; 41. Limiting slide bar. DETAILED DESCRIPTION

[0044] In the present invention, descriptions such as "first" and "second" are only used for descriptive purposes and do not specifically refer to the order or sequence, nor are they used to limit the present invention. They are only used to distinguish between protective components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions and technical features between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0045] Example 1:

[0046] Please refer to Figure 1A two-way controllable one-flow valve comprises a valve body 1, a support plate 4 is provided in the valve body 1, the support plate 4 divides the internal space of the valve body 1, an opening 5 is provided on the support plate 4, a plugging head 7 is provided on the opening 5, a regulating head 9 is provided on the side of the plugging head 7 away from the opening 5, a regulating screw 11 is threadedly connected to the regulating head 9, the regulating screw 11 rotates on the valve body 1, and one end of the regulating screw 11 is located outside the valve body 1, and a sealing spring 8 is provided between the plugging head 7 and the regulating head 9.

[0047] The working principle and beneficial effects of the above scheme:

[0048] The present application applies downward pressure on the blocking head 7 by the blocking spring 8 to achieve unidirectional flow. Compared with the existing one-way closure achieved by gravity, the one-way closure of the present application is more stable and can effectively avoid the problem of reverse penetration when reverse conduction is not required. When reverse conduction is required, the regulating screw 11 is rotated to drive the regulating head 9 to move upward, and the downward pressure of the blocking spring 8 is gradually reduced until the pressure of the blocking spring 8 becomes zero. When the regulating head 9 continues to move upward, the upward movement of the regulating head 9 will drive the blocking head 7 to move upward through the blocking spring 8, thereby releasing the blockage of the opening 5 and opening the valve body 1.

[0049] When releasing the one-way restriction, it is only necessary to rotate the regulating screw 11, which is convenient and quick.

[0050] Example 2:

[0051] Please refer to Figure 1 On the basis of Example 1, a regulating frame 6 is provided on the support plate 4, and the regulating frame 6 is located outside the opening 5. The plugging head 7 is provided with a protruding sliding ridge, and the plugging head 7 is slidably connected to the regulating frame 6 through the sliding ridge thereon. A cavity capable of accommodating the flow of liquid is provided between the regulating frame 6 and the plugging head 7;

[0052] A limiting slide bar 41 is provided on the lower side of the regulating head 9 , and the limiting slide bar 41 is slidably inserted into the regulating frame 6 .

[0053] The working principle and beneficial effects of the above scheme:

[0054] When the regulating screw 11 is rotated, the limiting slide rod 41 provided on the regulating head 9 is slidably connected to the regulating frame 6. At this time, the regulating head 9 cannot rotate with the regulating screw 11. Under the action of the thread, the regulating head 9 moves up and down to adjust the pressure of the blocking spring 8.

[0055] The plugging head 7 is slidably connected to the regulating frame 6 via sliding ridges provided thereon, thereby ensuring stable movement of the plugging head 7 , and a cavity is provided between the regulating frame 6 and the plugging head 7 to accommodate liquid flow.

[0056] Example 3:

[0057] Please refer to Figure 1 Based on Example 1, the two ends of the internal space of the valve body 1 are respectively an outlet 2 and an inlet 3, the inlet 3 is located on the side of the support plate 4 away from the plugging head 7, and the outlet 2 is located on the side close to the plugging head 7.

[0058] The valve body 1 is provided with a regulating plate 10, and the regulating plate 10 is arranged parallel to the support plate 4;

[0059] The regulating screw 11 is rotatably connected to the regulating plate 10;

[0060] One end of the regulating screw 11 located outside the valve body 1 is fixedly connected to a handle 12 for facilitating the rotation of the regulating screw 11 .

[0061] Example 4:

[0062] Please refer to Figure 2-Figure 6 On the basis of Example 1, a maintenance component 13 is provided in the regulating plate 10 , and the maintenance component 13 is sleeved on the regulating screw 11 , and the maintenance component 13 is used to connect the regulating plate 10 and the regulating screw 11 .

[0063] The maintenance assembly 13 includes a blocking shell 14, which is fixedly connected to the regulating plate 10. A rotating frame 17 is provided in the blocking shell 14, and a rotating ring 16 is provided in the rotating frame 17. The rotating ring 16 is rotatably connected to the rotating frame 17. The rotating ring 16 is fixedly connected to the regulating screw 11, and the regulating screw 11 passes through the blocking shell 14.

[0064] Preferably, the rotating ring 16 may be a bearing;

[0065] The blocking shell 14 is provided with a cover plate 15 , and a fixing ring sleeve 19 is provided on the cover plate 15 . The fixing ring sleeve 19 is pressed onto the rotating ring 16 .

[0066] The sealing housing 14 is provided with a sealing groove 40;

[0067] The cover plate 15 is provided with a sealing strip 21;

[0068] The sealing strip 21 is disposed corresponding to the sealing groove 40 .

[0069] The blocking shell 14 is threadedly connected to an adjusting screw 18, one end of which is located inside the blocking shell 14 and is rotatably connected to a connecting plate 33. The connecting plate 33 is slidably connected to the blocking shell 14, and a first connecting rod 30 is fixedly connected to the connecting plate 33. Both ends of the first connecting rod 30 are fixedly connected to a second connecting rod 31, and the second connecting rod 31 is fixedly connected to a third connecting rod 32.

[0070] The cover plate 15 is provided with a limit block 22;

[0071] The blocking shell 14 is provided with a card slot 29 corresponding to the limit card block 22;

[0072] The limit block 22 and the slot 29 are wedge-shaped;

[0073] The third connecting rod 32 can be slidably connected to the limiting block 22 .

[0074] The cover plate 15 is provided with a second limiting hole 23;

[0075] The blocking shell 14 is provided with a first limiting hole 20;

[0076] The first limiting hole 20 and the second limiting hole 23 are provided correspondingly;

[0077] A fastening rod 37 is inserted into the first limiting hole 20 and the second limiting hole 23, and a locking head is provided at one end of the fastening rod 37 located outside the cover plate 15;

[0078] A locking column 35 is provided in the blocking shell 14;

[0079] The end of the third connecting rod 32 is fixedly connected to a clamping plate 34;

[0080] The second connecting rod 31 is provided with a linkage piece 38 , and the linkage piece 38 is provided with a claw 36 . The claw 36 can be engaged with the fastening rod 37 .

[0081] The working principle and beneficial effects of the above scheme:

[0082] The maintenance assembly 13 is arranged between the regulating plate 10 and the regulating screw 11, which can effectively stabilize the rotation of the regulating screw 11. After opening the maintenance assembly 13, the regulating screw 11 can be quickly removed, which facilitates maintenance inside the valve body 1.

[0083] During installation, first insert the regulating screw 11 from the blocking shell 14, and place the rotating ring 16 fixed to the regulating screw 11 in the rotating frame 17, then snap the cover plate 15 onto the blocking shell 14, insert the limiting block 22 into the card slot 29, align the second limiting hole 23 with the first limiting hole 20, insert the fastening rod 37 into the first limiting hole 20 and the second limiting hole 23, rotate the regulating screw 18, drive the connecting plate 33 to the side of the blocking shell 14, and drive the third connecting rod 32 to move through the first connecting rod 30 and the second connecting rod 31, and the third connecting rod 32 squeezes the limiting block 22, so that the limiting block 22 and the card slot 29 are more firmly fixed;

[0084] The movement of the second connecting rod 31 drives the claw 36 to move through the linkage piece 38. The claw 36 is clamped on the fastening rod 37 to prevent the fastening rod 37 from falling off, so that the blocking shell 14 and the cover plate 15 are firmly fixed.

[0085] The clamping plate 34 moves along with the third connecting rod 32 and is clamped on the clamping column 35 to prevent the adjusting stud 18 from excessive rotation;

[0086] The provision of the sealing strip 21 and the sealing groove 40 makes the connection between the sealing shell 14 and the cover plate 15 tighter, which can effectively prevent impurities from entering and damaging the parts therein.

[0087] Example 5:

[0088] Please refer to Figure 2-Figure 6 On the basis of Example 4, a second oil tank 39 is provided in the fixed ring sleeve 19, and a liquid storage ring 25 is provided inside the second oil tank 39, and the liquid storage ring 25 is in communication with the second oil tank 39;

[0089] A first oil tank 26 is provided on the upper side of the second oil tank 39 , and the first oil tank 26 and the second oil tank 39 communicate with each other through a connecting pipe gap 28 . The first oil tank 26 is slidably connected to one end of the connecting pipe gap 28 , and an oil outlet hole is provided on the first oil tank 26 .

[0090] The working principle and beneficial effects of the above scheme:

[0091] When the cover plate 15 is pressed down on the sealing shell 14, the first oil tank 26 is squeezed, and the oil in the first oil tank 26 is squeezed onto the upper side of the liquid storage ring 25 and the rotating ring 16, lubricating the rotating ring 16, reducing the wear of the rotating ring 16, and ensuring the stable rotation of the regulating screw 11.

[0092] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A two-way controllable check valve, characterized in that: The invention comprises a valve body (1), wherein a support plate (4) is provided in the valve body (1), the support plate (4) divides the internal space of the valve body (1), an opening (5) is provided on the support plate (4), a plugging head (7) is provided on the opening (5), a regulating head (9) is provided on the side of the plugging head (7) away from the opening (5), a regulating screw (11) is threadedly connected to the regulating head (9), the regulating screw (11) rotates on the valve body (1), and one end of the regulating screw (11) is located outside the valve body (1), and a sealing spring (8) is provided between the plugging head (7) and the regulating head (9).

2. A two-way controllable check valve according to claim 1, characterized in that: A regulating frame (6) is provided on the support plate (4), and the regulating frame (6) is located outside the opening (5). A protruding sliding rib is provided on the plugging head (7), and the plugging head (7) is slidably connected to the regulating frame (6) via the sliding rib on the plugging head (7). A cavity capable of accommodating the flow of liquid is provided between the regulating frame (6) and the plugging head (7); A limiting slide bar (41) is provided on the lower side of the regulating head (9), and the limiting slide bar (41) is slidably inserted into the regulating frame (6).

3. A two-way controllable check valve according to claim 1, characterized in that: The two ends of the internal space of the valve body (1) are respectively an outlet (2) and an inlet (3); the inlet (3) is located on the side of the support plate (4) away from the plugging head (7), and the outlet (2) is located on the side close to the plugging head (7).

4. A two-way controllable check valve according to claim 1, characterized in that: A regulating plate (10) is provided on the valve body (1), and the regulating plate (10) is arranged parallel to the support plate (4); The regulating screw (11) is rotatably connected to the regulating plate (10); One end of the regulating screw (11) located outside the valve body (1) is fixedly connected to a handle (12).

5. A two-way controllable check valve according to claim 4, characterized in that: A maintenance component (13) is provided in the regulating plate (10), and the maintenance component (13) is sleeved on the regulating screw (11). The maintenance component (13) is used to connect the regulating plate (10) and the regulating screw (11).

6. A two-way controllable check valve according to claim 5, characterized in that: The maintenance assembly (13) includes a blocking shell (14), the blocking shell (14) is fixedly connected to the regulating plate (10), a rotating frame (17) is provided in the blocking shell (14), a rotating ring (16) is provided in the rotating frame (17), the rotating ring (16) is rotatably connected to the rotating frame (17), the rotating ring (16) is fixedly connected to the regulating screw (11), and the regulating screw (11) passes through the blocking shell (14); The blocking shell (14) is provided with a cover plate (15), a fixing ring sleeve (19) is provided on the cover plate (15), and the fixing ring sleeve (19) is pressed onto the rotating ring (16).

7. A two-way controllable check valve according to claim 6, characterized in that: A sealing groove (40) is provided on the sealing shell (14); A sealing strip (21) is provided on the cover plate (15); The sealing strip (21) and the sealing groove (40) are arranged correspondingly.

8. The two-way controllable check valve according to claim 6, characterized in that: An adjusting stud (18) is rotatably connected to the blocking shell (14), one end of the adjusting stud (18) located in the blocking shell (14) is rotatably connected to a connecting plate (33), the connecting plate (33) is slidably connected to the blocking shell (14), a first connecting rod (30) is fixedly connected to the connecting plate (33), both ends of the first connecting rod (30) are fixedly connected to a second connecting rod (31), and a third connecting rod (32) is fixedly connected to the second connecting rod (31); A limit block (22) is provided on the cover plate (15); The blocking shell (14) is provided with a card slot (29) corresponding to the limit card block (22); The limiting block (22) and the card slot (29) are wedge-shaped; The third connecting rod (32) can be slidably connected to the limiting block (22).

9. A two-way controllable check valve according to claim 8, characterized in that: A second limiting hole (23) is provided on the cover plate (15); A first limiting hole (20) is provided on the blocking shell (14); The first limiting hole (20) and the second limiting hole (23) are correspondingly arranged; A fastening rod (37) is inserted into the first limiting hole (20) and the second limiting hole (23), and a locking head is provided at one end of the fastening rod (37) located outside the cover plate (15); A blocking column (35) is provided in the blocking shell (14); The end of the third connecting rod (32) is fixedly connected with a clamping plate (34); The second connecting rod (31) is provided with a linkage piece (38), the linkage piece (38) is provided with a clamping claw (36), and the clamping claw (36) can be clamped to the fastening rod (37).

10. The two-way controllable check valve according to claim 6, characterized in that: A second oil tank (39) is provided in the fixed ring sleeve (19), a liquid storage ring (25) is provided inside the second oil tank (39), and the liquid storage ring (25) is in communication with the second oil tank (39); A first oil tank (26) is provided on the upper side of the second oil tank (39). The first oil tank (26) and the second oil tank (39) are in communication through a connecting pipe gap (28). The first oil tank (26) is slidably sleeved on one end of the connecting pipe gap (28). An oil outlet hole is provided on the first oil tank (26).

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