A full seal quick cut-off blind plate valve

Abstract

The utility model relates to the field of blind plate valve, concretely relates to a full sealing fast cutting blind plate valve, including the valve body, the both sides of valve body are equipped with the connecting pipe, the connecting pipe end is equipped with the flange, the valve body is equipped with the blind plate piece inside, the blind plate piece is equipped with the intercommunication hole of with connecting pipe inner diameter adaptation, the valve body top is equipped with first strip groove, the blind plate piece top is equipped with the connecting block, the connecting block passes through first strip groove and extends the valve body outside, the connecting block can move along first strip groove, drives the blind plate piece and slides in the valve body, makes intercommunication hole with connecting pipe inner hole alignment or staggered, the utility model discloses through sliding the blind plate piece outside the valve body, can realize the switching of pipeline on-off state, need not to dismantle flange bolt, greatly promotes the operation efficiency, can isolate medium and the contact of outside simultaneously, avoids the medium of traditional eight blind plate dismounting process and escapes, effectively prevents the environmental pollution and the security risk caused by the leakage of dangerous medium such as natural gas,

Description

Technical Field

[0001] This utility model relates to the field of blind valves, and in particular to a fully sealed quick-cut blind valve. Background Technology

[0002] Figure-eight blind flanges are widely used in natural gas production to temporarily or permanently isolate fluids in pipeline systems. They consist of two iron plates, one solid and one hollow, joined together to form a figure eight. They are placed between two flanges of the pipeline and connected by bolts to achieve pipeline connectivity or closure.

[0003] When switching figure-eight blind flanges, the bolts on the flange need to be removed, the figure-eight blind flange needs to be taken out, and the direction needs to be reversed for reinstallation. During this process, the medium is prone to leakage, causing environmental pollution.

[0004] Therefore, a technical solution is needed to address the problem that switching figure-eight blind flanges requires removing bolts, taking out the figure-eight blind flange, and reinstalling it, which is cumbersome and prone to causing media leakage. Utility Model Content

[0005] The purpose of this utility model is to overcome the technical problems of existing blind flanges, which require disassembling bolts and removing the blind flange for reinstallation during switching, which is cumbersome and prone to causing media leakage. This utility model provides a fully sealed quick-cut blind flange valve.

[0006] This utility model provides a fully sealed quick-cut blind valve, including a valve body, with connecting pipes on both sides of the valve body, and flanges at the ends of the connecting pipes; The valve body is provided with a blind plate, and the blind plate is provided with a communication hole that is adapted to the inner diameter of the connecting pipe; The valve body is provided with a first strip groove at the top, and the blind plate is provided with a connecting block at the top, the connecting block extending out of the valve body through the first strip groove; The connecting block can move along the first strip groove, causing the blind plate to slide within the valve body, so that the connecting hole is aligned with or offset from the inner hole of the connecting pipe.

[0007] This utility model discloses a fully sealed quick-cut blind plate valve. In use, the flanges on both sides of the valve body are connected to the pipeline. When it is necessary to open the pipeline, the connecting block drives the blind plate to slide in the valve body, thereby aligning the connecting hole on the blind plate with the inner hole of the connecting pipe. The medium from the upstream of the pipeline enters the downstream of the pipeline through the connecting hole. When it is necessary to cut off the pipeline, the connecting block drives the blind plate to slide in the valve body, thereby sealing the inner hole of the connecting pipe and cutting off the medium in the pipeline.

[0008] Preferably, a sealing plate is provided on both sides of the blind plate, and the sealing plate is provided with a clearance hole adapted to the inner diameter of the connecting pipe.

[0009] By installing sealing plates on both sides of the blind plate, leakage caused by wear of the valve body can be prevented.

[0010] Preferably, both the blind plate and the sealing plate are structural components made of silicon carbide.

[0011] Silicon carbide has ultra-high hardness and excellent wear resistance, which can maintain good sealing performance for a long time. It is also corrosion resistant and can adapt to working conditions containing acidic gases and solid particles.

[0012] Preferably, a plurality of springs are provided between the sealing plate and the inner wall of the valve body, the springs push the sealing plate against the blind plate, and a gap is provided between the side of the connecting block and the side wall of the strip groove.

[0013] The spring maintains a pushing force against the sealing plate. When the sealing surface of the sealing plate is worn, the pushing force of the spring can compensate for the wear and prevent the seal from failing.

[0014] Preferably, the inner wall of the valve body is provided with a plurality of sleeves, and the side of the sealing plate connected to the spring is provided with a plurality of mounting holes. The sleeves are nested in the mounting holes, and the springs are arranged in a one-to-one correspondence with the sleeves and are located inside the sleeves.

[0015] The spring is located inside the sleeve. During the process of the spring pushing against the sealing plate, the sleeve can prevent external media from entering the sleeve and contacting the spring, thus extending the service life of the spring and ensuring that the spring's compensation function is effective for a long time.

[0016] Preferably, it further includes a power mechanism for driving the connecting block to move along the strip groove.

[0017] A power mechanism is connected to the connecting block, which drives the blind plate to move quickly, making it easier to open and close the blind plate valve.

[0018] Preferably, the power mechanism includes a housing, a screw is rotatably disposed inside the housing, one end of the screw extends out of one side of the housing, a second slot is provided at the bottom of the housing, a movable plate is threaded onto the screw, and a connecting block extends into the housing through the second slot and is connected to the movable plate.

[0019] The rotation of the screw drives the movable plate to move along the axis of the screw, thereby moving the blind plate between the two sealing plates. This allows the connecting hole on the blind plate to align with or avoid the clearance hole on the sealing plate, thus enabling the valve body to open and close.

[0020] Preferably, a plurality of support rods are provided between the bottom surface of the housing and the top surface of the valve body.

[0021] The support rod provides support for the housing on top of the valve body, enabling the housing to be installed on top of the valve body.

[0022] Preferably, bearings are provided on both sides of the housing, and the screw is connected to the two bearings respectively.

[0023] The screw can be rotatably mounted on the housing, and the bearing provides support for the screw, ensuring stable rotation, bearing load, and reducing friction.

[0024] Preferably, a handwheel is provided at the end of the screw that extends out of the housing.

[0025] The screw can be easily rotated via a handwheel, making its operation more labor-saving.

[0026] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model provides a fully sealed quick-cut blind plate valve, which can switch the on / off state of the pipeline by sliding the blind plate outside the valve body without disassembling the flange bolts, greatly improving the work efficiency, and is especially suitable for working conditions that require frequent switching; 2. This utility model provides a fully sealed quick-cut blind flange valve. When the blind flange slides in the valve body, it is always in the sealed cavity, isolating the medium from contact with the outside world. This avoids medium leakage during the disassembly and assembly of traditional figure-eight blind flanges and effectively prevents environmental pollution and safety risks caused by the leakage of dangerous media such as natural gas. Attached Figure Description

[0027] Figure 1 This is a front view of a fully sealed quick-cut blind valve according to this utility model; Figure 2 yes Figure 1 Sectional view of AA; Figure 3 yes Figure 2 Enlarged view of area B in the middle; Figure 4 This is a top view of a fully sealed quick-cut blind valve according to this utility model; Figure 5 yes Figure 4 CC section view; Figure 6 This is a schematic diagram of the structure of the sealing plate described in this utility model; Marked in the image: 1-Valve body, 11-Connecting pipe, 12-Flange, 13-First slot, 2-Blind plate, 21-Connecting hole, 22-Connecting block, 23-Modible plate, 3-Sealing plate, 31-Allowing hole, 32-Mounting hole, 4-Spring, 5-Sleeve, 6-Box, 61-Second slot, 7-Screw, 71-Handwheel, 8-Support rod, 9-Bearing. Detailed Implementation

[0028] The present invention will be further described in detail below with reference to specific embodiments. However, it should not be construed as limiting the scope of the present invention to the following embodiments; all technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0029] Unless otherwise specified, the use of terms such as "upper," "lower," "left," "right," "center," "inner," and "outer" to indicate orientation or positional relationships in the description of specific embodiments of this utility model is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product / equipment / device is typically placed during use. These terms are merely for the purpose of facilitating the description of the utility model solution or simplifying the description in specific embodiments, enabling those skilled in the art to quickly understand the solution, and do not indicate or imply that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific positional relationship. Therefore, they should not be construed as limitations on this utility model.

[0030] Furthermore, the use of terms such as "horizontal," "vertical," "suspended," and "parallel" does not imply that the corresponding device / component / element must be absolutely horizontal, vertical, suspended, or parallel, but rather that it can be slightly tilted or have a deviation. For example, "horizontal" merely means that its direction is more horizontal relative to "vertical," not that the structure must be completely horizontal, but can be slightly tilted. Alternatively, it can be simplified to mean that the corresponding device / component / element, when set in a "horizontal," "vertical," "suspended," or "parallel" direction, can have an error / deviation of ±10% relative to the corresponding direction, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, and more preferably within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its function in the present invention.

[0031] Furthermore, the use of terms such as "first," "second," and "third" in terminology is merely for distinguishing descriptions of identical or similar components and should not be interpreted as emphasizing or implying the relative importance of a particular component.

[0032] Furthermore, in the description of the embodiments of this utility model, "several", "multiple", and "several" represent at least two. The number can be any number, such as two, three, four, five, six, seven, eight, or nine, and can even exceed nine.

[0033] Furthermore, in the description of the technical solution of this utility model, unless otherwise explicitly specified / limited / restricted, the terms "set up," "install," "connect," "link," "equipped with," "laid out," and "arranged" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to common connection methods in the art, such as welding, riveting, bolting, and threaded connections. Such connections can be mechanical, electrical, or communication connections; they can be direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components.

[0034] Example 1 like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, a fully sealed quick-cut blind valve includes a valve body 1, which is an integral cast stainless steel structure with a pressure resistance of ≥10MPa. Connecting pipes 11 are respectively provided on both sides of the valve body 1, and flanges 12 are provided at the ends of the connecting pipes 11. The valve body 1 is provided with a blind plate 2, and the blind plate 2 is provided with a communication hole 21 that is adapted to the inner diameter of the connecting pipe 11; The valve body 1 is provided with a first strip groove 13 at the top, and the blind plate 2 is provided with a connecting block 22 at the top. The connecting block 22 extends out of the valve body 1 through the first strip groove 13. The connecting block 22 can move along the first strip groove 13, causing the blind plate 2 to slide inside the valve body 1, so that the connecting hole 21 is aligned with or offset from the inner hole of the connecting pipe 11.

[0035] In use, the flanges 12 on both sides of the valve body 1 are connected to the pipeline. When it is necessary to open the pipeline, the blind plate 2 is slid in the valve body 1 by the connecting block 22, so that the connecting hole 21 on the blind plate 2 is aligned with the inner hole of the connecting pipe 11. The medium upstream of the pipeline enters the downstream of the pipeline through the connecting hole 21. When it is necessary to cut off the pipeline, the blind plate 2 is slid in the valve body 1 by the connecting block 22, so that the blind plate 2 closes the inner hole of the connecting pipe 11, thereby cutting off the medium in the pipeline.

[0036] In one or more embodiments, two sealing plates 3 may be provided inside the valve body 1. The two sealing plates 3 are respectively provided on both sides of the blind plate 2 and abut against the blind plate 2.

[0037] Sealing plate 3: Both sealing plate 3 and blind plate 2 are made of silicon carbide, ensuring that sealing plate 3 and blind plate 2 have ultra-high hardness and excellent wear resistance, can maintain good sealing performance for a long time, and are corrosion resistant, and can adapt to working conditions containing acidic gases and solid particles. Several mounting holes 32 are provided on the side of sealing plate 3 near the inner wall of valve body 1. Sleeves 5 are provided on the inner wall of valve body 1 corresponding to the mounting holes 32. Sleeves 5 are embedded in the mounting holes 32. Springs 4 are provided at the bottom of mounting holes 32. The other end of springs 4 is connected to the bottom of sleeves 5. When sealing plate 3 is worn, it can be compensated by the pushing action of springs 4 to avoid sealing failure. In order to ensure that the sealing plate can move normally during the spring pushing process, it is necessary to maintain a certain gap with the inner wall of the first strip groove. Springs 4 are located in sleeves 5. During the process of springs 4 pushing sealing plate 3, sleeves 5 can move along the axis of mounting holes 32, thereby reducing the contact between springs 4 and the medium, extending the service life of springs 4, and ensuring that the compensation effect of springs 4 is effective for a long time.

[0038] Example 2 like Figure 4 and Figure 5 As shown, the difference between this embodiment and embodiment 1 is that it also includes a power mechanism, which is used to drive the connecting block 22 to move along the strip groove.

[0039] In one or more embodiments, the power mechanism may include a housing 6, a screw 7, and a movable plate 23.

[0040] Box 6: Located on top of valve body 1, box 6 is connected to valve body 1 by several support rods 8; Screw 7: Rotatably mounted on housing 6. Bearings 9 are respectively installed on both sides of housing 6. Screw 7 is connected to the two bearings 9 respectively. One end of screw 7 extends out of housing 6. Handwheel 71 is installed on the part of screw 7 that extends out of housing 6 for easy rotation of screw 7. Movable plate 23: threadedly connected to screw 7, located between two bearings 9, with a second slot 61 at the bottom of housing 6. Connecting block 22 on the upper part of valve body 1 extends into housing 6 through the second slot 61 and is connected to movable plate 23. The rotation of screw 7 drives movable plate 23 to move along the axis of screw 7, thereby causing blind plate 2 to move between two sealing plates 3, thus aligning or avoiding the connecting hole 21 on blind plate 2 with the clearance hole 31 on sealing plate 3, thereby realizing the opening and closing of valve body 1.

[0041] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A fully sealed quick-cut blind valve, characterized in that, Includes a valve body (1), with connecting pipes (11) on both sides of the valve body (1) and flanges (12) at the ends of the connecting pipes (11); The valve body (1) is provided with a blind plate (2), and the blind plate (2) is provided with a connecting hole (21) that is adapted to the inner diameter of the connecting pipe (11). The valve body (1) has a first strip groove (13) at the top, and the blind plate (2) has a connecting block (22) at the top. The connecting block (22) extends out of the valve body (1) through the first strip groove (13). The connecting block (22) can move along the first strip groove (13), causing the blind plate (2) to slide inside the valve body (1), so that the connecting hole (21) is aligned with or offset from the inner hole of the connecting pipe (11).

2. The fully sealed quick-cut blind valve according to claim 1, characterized in that, The blind plate (2) is provided with sealing plates (3) on both sides, and the sealing plates (3) are provided with clearance holes (31) that are adapted to the inner diameter of the connecting pipe (11).

3. A fully sealed quick-cut blind valve according to claim 2, characterized in that, Both the blind plate (2) and the sealing plate (3) are structural components made of silicon carbide.

4. A fully sealed quick-cut blind valve according to claim 2, characterized in that, A plurality of springs (4) are provided between the sealing plate (3) and the inner wall of the valve body (1). The springs (4) push the sealing plate (3) to abut against the blind plate (2). A gap is provided between the side of the connecting block (22) and the side wall of the strip groove.

5. A fully sealed quick-cut blind valve according to claim 4, characterized in that, The valve body (1) has several sleeves (5) on its inner wall. The sealing plate (3) has several mounting holes (32) on one side connected to the spring (4). The sleeves (5) are nested in the mounting holes (32). The spring (4) is arranged in a one-to-one correspondence with the sleeves (5) and is located inside the sleeves (5).

6. A fully sealed quick-cut blind valve according to claim 1, characterized in that, It also includes a power mechanism for driving the connecting block (22) to move along the strip groove.

7. A fully sealed quick-cut blind valve according to claim 6, characterized in that, The power mechanism includes a housing (6), in which a screw (7) is rotatably disposed. One end of the screw (7) extends out of one side of the housing (6). A second slot (61) is provided at the bottom of the housing (6). A movable plate (23) is threaded onto the screw (7). The connecting block (22) extends into the housing (6) through the second slot (61) and is connected to the movable plate (23).

8. A fully sealed quick-cut blind valve according to claim 7, characterized in that, Several support rods (8) are provided between the bottom surface of the box (6) and the top surface of the valve body (1).

9. A fully sealed quick-cut blind valve according to claim 7, characterized in that, The housing (6) is provided with bearings (9) on both sides, and the screw (7) is connected to the two bearings (9) respectively.

10. A fully sealed quick-cut blind valve according to claim 7, characterized in that, A handwheel (71) is provided at one end of the screw (7) that extends out of the housing (6).

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