A bidirectional seal forged steel globe valve

Abstract

The application relates to the technical field of stop valves, in particular to a bidirectional sealing forged steel stop valve which comprises a stop valve body, plug-in grooves are arranged in the left and right ends of the stop valve body, slidable mounting plates are sleeved in the plug-in grooves, rotatable flow resistance plates are arranged on the mounting plates, and hard rubber plates are arranged on the two sides of the flow resistance plates. The mounting plates are designed as removable modules, and the cooperation of flanges, arc grooves, limiting blocks and sealing rings is used, when the sealing ring is rotated to remove the shielding of the arc groove on the plug-in groove, an operator can conveniently take out the mounting plate from the inside of the stop valve body through the long groove on the mounting plate, so that the mounting plate and the flow resistance plate, the hard rubber plate and other structures thereon can be conveniently overhauled or replaced, and the maintenance difficulty and cost are reduced.

Description

Technical Field

[0001] This application relates to the technical field of gate valves, and in particular to a bidirectional sealing forged steel gate valve. Background Technology

[0002] A gate valve, also known as a stop valve, is a type of forced-seal valve. Therefore, when the valve is closed, pressure must be applied to the valve disc to ensure a leak-proof seal. When the medium enters the valve from below the valve disc, the resistance that the operating force needs to overcome is the frictional force of the valve stem and packing, plus the thrust generated by the pressure of the medium. The force required to close the valve is greater than the force required to open it, so the valve stem diameter must be large; otherwise, the valve stem may bend.

[0003] A search revealed that the utility model disclosed in CN222977435U discloses a gate valve, comprising: a valve body; and a limiting component, wherein the limiting component includes a support plate, baffles, a sliding groove, and a slider; the support plate is connected to one end of the upper and lower parts of the inner surface of the valve body, and a sliding groove is formed in the middle of the outer surface of the support plate; multiple baffles are connected to one end of the upper and lower parts of the inner surface of the valve body, and sliders are connected to the outer surfaces of the baffles, with the sliders being movably connected to the inside of the sliding grooves. This addresses the problem that in existing valve bodies, the internal structure of the valve body typically lacks any limiting structure during actual use, resulting in a large impact force when the valve body is opened, which can damage the internal structure of the valve body and reduce its service life.

[0004] However, in the above-mentioned baffle is a movable connection. Although it is fixed with a rubber pad, the fixing effect is not good. If the water flow pressure is too high, it will cause an impact, making the fixing effect of the rubber pad poor. At the same time, the support plate is not removable, which is inconvenient to use. Therefore, it needs to be improved, and a two-way sealing forged steel gate valve is proposed. Utility Model Content

[0005] To address the problems mentioned in the background section, this application provides a bidirectional sealing forged steel gate valve.

[0006] This application provides a bidirectional sealing forged steel gate valve, which adopts the following technical solution: A bidirectional sealing forged steel gate valve includes a gate valve body. Both the left and right ends of the gate valve body are provided with insertion grooves. A slidable mounting plate is sleeved inside the insertion groove. A rotatable baffle plate is arranged on the mounting plate. Hard rubber plates are provided on both sides of the baffle plate.

[0007] Optionally, the rigid rubber plate is made of rubber, and an installation rod is installed at the bottom of the shut-off valve body.

[0008] Optionally, the flow-blocking plates are distributed vertically and staggered, and there is a gap between the flow-blocking plates and the interior of the shut-off valve body.

[0009] Optionally, the mounting plate is provided with a long groove, which is rectangular in shape.

[0010] Optionally, a flange is fixedly fitted onto the outer surface of the shut-off valve body, and a circular hole is provided on the flange.

[0011] Optionally, the flange is provided with an arc-shaped groove, and a limit block is movably installed inside the arc-shaped groove.

[0012] Optionally, the limiting block is fixedly connected with a sealing ring, which contacts the outer surface of the flange.

[0013] In summary, this application includes the following beneficial technical effects:

[0014] 1. This utility model effectively diverts water flow by incorporating rotatable baffles on the mounting plate, with a gap between the outer surface of the baffles and the interior of the gate valve body. Under water flow impact, the baffles can rotate and tilt, using multiple baffles to absorb the impact force of the water flow layer by layer, preventing direct impact on the internal structure of the gate valve body, greatly reducing damage to the internal structure, and significantly extending the overall service life of the valve. The mounting plate is designed as a removable module, and through the cooperation of the flange, arc groove, limit block, and sealing ring, when the sealing ring is rotated to release the arc groove from obstructing the insertion slot, the operator can easily remove it from inside the gate valve body through the long groove on the mounting plate. This facilitates the inspection or replacement of the mounting plate and its baffles, hard rubber plates, and other structures, reducing maintenance difficulty and cost.

[0015] 2. This utility model utilizes rigid rubber plates positioned on both sides of a flow-blocking plate. When the flow-blocking plate tilts and compresses the rigid rubber plates, the rigid rubber plates undergo elastic deformation, creating a reverse blocking force on the flow-blocking plate. This limits excessive tilting of the flow-blocking plate, ensuring its stability when absorbing water flow impact, and further guaranteeing the stability of the valve's internal structure under water flow impact. Identical structures are provided at both ends of the valve, ensuring effective absorption of water flow impact regardless of which end the water enters or exits. Simultaneously, the sealing ring, in conjunction with the flange, achieves bidirectional sealing when fixed to the pipeline via bolts and nuts, improving the valve's applicability and sealing performance. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the front in an embodiment of this application;

[0017] Figure 2 This is a schematic diagram of the overall three-dimensional cross-sectional structure of the front in an embodiment of this application;

[0018] Figure 3 This is a three-dimensional structural diagram of the snap-fit ​​plate and trapezoidal sliding plate in the embodiments of this application;

[0019] Figure 4 This is an embodiment of the present application. Figure 3 A magnified schematic diagram of the structure at point A in the middle.

[0020] Reference numerals in the attached drawings: 1. Gate valve body; 2. Flange; 3. Sealing ring; 4. Mounting rod; 5. Insertion groove; 6. Mounting plate; 7. Baffle plate; 8. Hard rubber plate; 9. Long groove; 10. Arc groove; 11. Limiting block. Detailed Implementation

[0021] The following is in conjunction with the appendix Figures 1-4 This application will be described in further detail.

[0022] This utility model proposes a bidirectional sealing forged steel gate valve, including a gate valve body 1. During use, when the valve is opened, the water flow is under a certain water pressure. The water flow will directly impact the internal structure of the gate valve body 1 under impact, thereby affecting the service life of the entire valve.

[0023] Insertion slots 5 are provided inside both the left and right ends of the gate valve body 1. The location of the insertion slots 5 can be observed from the flange 2 in the attached drawing. A sliding mounting plate 6 is fitted inside the insertion slots 5. The mounting plate 6 is a removable modular design, which is convenient for operators to replace. A mounting rod 4 is installed at the bottom of the gate valve body 1. The whole body can be fixed in one place by the mounting rod 4, so that it will not shake due to external factors.

[0024] To mitigate the impact of water flow on the internal structure of the shut-off valve during opening, a rotatable baffle plate 7 is installed on the mounting plate 6. This design ensures that the baffle plate 7 is not directly impacted by the water flow. Furthermore, the outer surface of the baffle plate 7 is not tightly fitted to the interior of the shut-off valve body 1, but has a certain gap, thus diverting the flow and preventing the baffle plate 7 from bearing all the impact of the water flow. Since the baffle plate 7 is rotatable, it will rotate and tilt under the impact of the water flow, thereby protecting the baffle plate 7 and extending its service life. When one baffle plate 7 is impacted, the impact of the water flow will impact the next baffle plate 7. Thus, the two baffle plates 7 on the insertion slot 5 absorb the impact of the water flow in one layer, reducing the impact on the internal structure of the shut-off valve body 1 and ensuring the stability of its internal structure.

[0025] When the baffle plate 7 is impacted by the water flow, it will rotate and tilt. To prevent the baffle plate 7 from being constantly affected by the water flow, rigid rubber plates 8 are provided on both sides of the baffle plate 7. The rigid rubber plates 8 are made of rubber. When the baffle plate 7 tilts to a certain extent, it will compress the rigid rubber plates 8, causing them to deform. Since the deformation of the rigid rubber plates 8 is within a certain range, it will form a certain obstruction effect on the baffle plate 7, preventing it from tilting too much under the impact of the water flow, thus reducing the absorption of the water flow impact. As can be seen from the attached drawing, the baffle plate 7 is provided at both the top and bottom, and is arranged in a staggered manner. This arrangement will further absorb the impact of the water flow and reduce the impact on its internal structure. As can be seen from the attached drawing, the above structure is provided at both the left and right ends, so it is possible to stop the water flow from either end.

[0026] After the mounting plate 6 is installed, in order to prevent the mounting plate 6 from easily detaching, flanges 2 are fixedly fitted onto the outer surfaces of both ends of the gate valve body 1. The flanges 2 are provided with multiple round holes, and an arc groove 10 is opened on one side of the outer surface of the flange 2. A limit block 11 is movably installed inside the arc groove 10. A sealing ring 3 is fixed to the outer surface of the limit block 11. The sealing ring 3 is provided with round holes and an arc groove. The arc groove will cover the mounting plate 6 in the insertion groove 5. When the operator rotates the sealing ring 3 to a certain extent (the degree of rotation is determined by the arc groove 10), the arc groove will release the obstruction of the insertion groove 5. At this time, the operator can push and pull through the long groove 9 provided on the mounting plate 6, so that the mounting plate 6 is completely detached from the inside of the gate valve body 1, and the structure on the mounting plate 6 can be inspected or replaced.

[0027] When the sealing ring 3 rotates to a certain extent, the arc groove on the sealing ring 3 will rotate to another position, and the inner surface of the sealing ring 3 will block the insertion groove 5. At this time, the round hole on the sealing ring 3 corresponds to the round hole on the flange 2. When connected to other pipes, the two will be fixed by bolts and nuts. At the same time, the mounting plate 6 will be firmly locked inside the shut-off valve body 1 and will not move due to the influence of water flow.

[0028] The above examples will yield the following beneficial effects:

[0029] By arranging rotatable baffles 7 on the mounting plate 6, and with a gap between the outer surface of the baffles 7 and the interior of the shut-off valve body 1, water flow can be effectively diverted. Under the impact of water flow, the baffles 7 can rotate and tilt, and multiple baffles 7 layer by layer consume the impact force of the water flow, avoiding direct impact of water flow on the internal structure of the shut-off valve body 1, greatly reducing the degree of damage to the internal structure, and significantly extending the overall service life of the valve.

[0030] The mounting plate 6 is designed as a removable module. With the cooperation of the flange 2, the arc groove 10, the limiting block 11 and the sealing ring 3, when the sealing ring 3 is rotated to release the arc groove from the plug groove 5, the operator can easily remove it from the inside of the shut-off valve body 1 through the long groove 9 on the mounting plate 6. This facilitates the inspection or replacement of the mounting plate 6 and its structures such as the flow baffle 7 and the hard rubber plate 8, reducing the difficulty and cost of maintenance.

[0031] The rigid rubber plate 8 is set on both sides of the baffle plate 7. When the baffle plate 7 tilts and squeezes the rigid rubber plate 8, the rigid rubber plate 8 undergoes elastic deformation to form a reverse blocking force on the baffle plate 7, which limits the excessive tilting of the baffle plate 7 and ensures the stability of the baffle plate 7 when absorbing the impact of water flow, further ensuring the stability of the internal structure of the valve under the impact of water flow.

[0032] The valve has the same structure on both its left and right ends. Regardless of which end the water enters or exits from, the flow impingement can be effectively absorbed by the baffle plate 7 and the rigid rubber plate 8. At the same time, the sealing ring 3 cooperates with the flange 2 to achieve bidirectional sealing when the valve is fixed to the pipeline with bolts and nuts, thus improving the valve's applicability and sealing performance.

[0033] The implementation principle of a bidirectional sealing forged steel gate valve according to an embodiment of this application is as follows: When the bidirectional sealing forged steel gate valve is in operation, when the valve is opened, water with a certain water pressure enters the gate valve body 1. The water flow first impacts the rotatable baffle plate 7 on the mounting plate 6. Due to the gap between the outer surface of the baffle plate 7 and the interior of the gate valve body 1, and their staggered arrangement, the water flow is diverted. Under the impact of the water flow, the baffle plate 7 rotates and tilts, and the impact force of the water flow is consumed layer by layer through multiple baffle plates 7, reducing the direct impact on the internal structure of the gate valve body 1. During the rotation and tilting process, when the baffle plate 7 tilts to a certain extent, it will squeeze the hard rubber plates 8 on both sides, causing them to deform. Within the elastic deformation range, the hard rubber plates 8 form a reverse force on the baffle plate 7, limiting its excessive tilting and ensuring that the baffle plate 7 continuously and effectively absorbs the impact of the water flow.

[0034] The mounting plate 6 is installed in the insertion grooves 5 inside the left and right ends of the shut-off valve body 1. After installation, it can be fixed and removed by rotating the sealing ring 3. In the initial state, the arc groove on the sealing ring 3 blocks the mounting plate 6 inside the insertion groove 5. When the sealing ring 3 is rotated, the arc groove releases the blockage of the insertion groove 5, and the mounting plate 6 can be removed from the inside of the shut-off valve body 1 through the long groove 9 on the mounting plate 6 for easy maintenance and replacement.

[0035] When the sealing ring 3 rotates to a specific position, its arc groove rotates to other positions, and the inner surface blocks the insertion groove 5. At this time, the round hole on the sealing ring 3 corresponds to the round hole on the flange 2. The valve is fixedly connected to other pipelines by bolts and nuts passing through the corresponding round holes. At the same time, the mounting plate 6 is firmly locked inside the gate valve body 1 to ensure that the mounting plate 6 will not move under the action of water flow. The sealing ring 3 also plays a sealing role, ensuring the valve's bidirectional sealing performance.

[0036] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A bidirectional sealing forged steel gate valve, comprising a gate valve body (1), characterized in that: The valve body (1) has insertion slots (5) on both the left and right ends. A sliding mounting plate (6) is fitted inside the insertion slot (5). A rotatable baffle plate (7) is arranged on the mounting plate (6). Hard rubber plates (8) are arranged on both sides of the baffle plate (7).

2. The bidirectional sealing forged steel gate valve according to claim 1, characterized in that: The hard rubber plate (8) is made of rubber material, and the bottom of the shut-off valve body (1) is equipped with an installation rod (4).

3. The bidirectional sealing forged steel gate valve according to claim 1, characterized in that: The flow-blocking plates (7) are distributed vertically and staggered, and there is a gap between the flow-blocking plates (7) and the interior of the shut-off valve body (1).

4. The bidirectional sealing forged steel gate valve according to claim 1, characterized in that: The mounting plate (6) is provided with a long groove (9), which is rectangular in shape.

5. A bidirectional sealing forged steel gate valve according to claim 1, characterized in that: A flange (2) is fixedly fitted onto the outer surface of the valve body (1), and a round hole is provided on the flange (2).

6. A bidirectional sealing forged steel gate valve according to claim 5, characterized in that: The flange (2) has an arc groove (10), and a limit block (11) is movably installed inside the arc groove (10).

7. A bidirectional sealing forged steel gate valve according to claim 6, characterized in that: The limiting block (11) is fixedly connected to a sealing ring (3), and the sealing ring (3) is in contact with the outer surface of the flange (2).

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