Valve with standby structure

Abstract

The valve with the standby structure comprises a valve body, a valve cavity is formed in the valve body, a valve clack is arranged in the valve cavity, a first valve port and a second valve port are formed in the valve cavity in a penetrating mode, a main valve is arranged on the opposite side of the first valve port, a standby valve is arranged on the opposite side of the second valve port, and valve covers corresponding to the main valve and the standby valve are arranged on the valve body. The main valve and the standby valve are each provided with a valve rod mechanism, each valve rod mechanism comprises a valve clack groove correspondingly formed in a valve clack, a sliding rod arranged in the valve clack groove, a sliding block installed on the sliding rod in a sliding mode and a valve rod fixedly connected to the sliding block, and the other end of the valve rod penetrates through the valve deck and is provided with a hand wheel assembly used for controlling the valve rod to ascend and descend. The reversing valve is novel in design and simple in structure, switching between the main valve and the standby valve is achieved through one valve clack, normal use of the valve can still be guaranteed when one valve is damaged or maintained, and the running stability of a pipeline system is improved.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, and in particular to a valve with a backup structure. Background Technology

[0002] Valves are pipeline accessories used to open and close pipelines, control flow direction, and regulate and control the parameters (temperature, pressure, and flow rate) of the transported medium. Based on their function, they can be classified as shut-off valves, check valves, regulating valves, etc. Valves are control components in fluid transport systems, possessing functions such as shut-off, regulation, flow diversion, backflow prevention, pressure stabilization, flow splitting, or overflow pressure relief.

[0003] Currently, after a period of use, valves may fail to open or close due to corrosion and weathering. When maintaining the valves, the pipeline system needs to be shut down, which is inconvenient. In particular, valve damage can paralyze the pipeline system and affect its stability. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies, such as the need to shut down the pipeline system for valve maintenance, which is inconvenient and can paralyze the pipeline system when the valve is damaged, affecting the stability of the pipeline system. Therefore, this invention proposes a valve with a backup structure.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A valve with a backup structure includes a valve body, a valve cavity in the valve body, a valve disc in the valve cavity, and a first valve port and a second valve port passing through the valve cavity. A main valve is provided on the side opposite the first valve port, and a backup valve is provided on the side opposite the second valve port. A valve cover is provided on the valve body corresponding to the main valve and the backup valve.

[0007] Both the main valve and the backup valve are equipped with a valve stem mechanism. The valve stem mechanism includes a valve disc groove corresponding to the valve disc, a slide rod provided in the valve disc groove, a slider slidably mounted on the slide rod, and a valve stem fixedly connected to the slider. The other end of the valve stem passes through the valve cover and is provided with a handwheel assembly for controlling the raising and lowering of the valve stem. A sealing sleeve is provided on the valve cover corresponding to the valve stem. The valve disc can block and seal the first valve port and the second valve port.

[0008] The valve stem is provided with a limiting component for restricting the movement direction of the valve disc.

[0009] Preferably, the handwheel assembly includes a handwheel located at the upper end of the valve stem, a threaded sleeve that is threadedly connected to the valve stem, a support sleeve that is rotatably connected to the outside of the threaded sleeve, and a plurality of support rods that are fixedly connected between the support sleeve and the valve cover.

[0010] Preferably, the limiting assembly includes a lifting and lowering linkage plate on the outside of the valve stem and a plurality of limiting rods fixedly disposed on the linkage plate. The limiting rods pass inward through the valve cover and into the slider and valve disc, and the limiting rods are slidably connected to the slider and valve disc.

[0011] More preferably, the valve stem sidewall is integrally formed with threads and a rotating sleeve is threadedly connected thereto, and the rotating sleeve is rotatably mounted on the linkage plate.

[0012] Preferably, the slide bar is provided in multiple forms, all of which pass through the slider and are slidably connected to it.

[0013] Preferably, limit blocks are provided on both the front and rear sides of the valve disc, and a cross-shaped limit groove is correspondingly provided on the inner wall of the valve cavity for the limit blocks to slide in.

[0014] Preferably, a valve disc pad matching the valve disc is provided in the valve cavity at the position corresponding to the first valve port and the second valve port.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. In this utility model, the design of the main valve and the backup valve enables separate control of the two valve ports of the valve body. When one valve is being maintained, the other valve can be used for control, and maintenance can be carried out without shutting down the valve, thereby improving the stability of the pipeline system.

[0017] 2. In this utility model, the bidirectional movement design of the valve disc enables the switching between the main valve and the backup valve using a single valve disc, and multiple limiting structures restrict the movement direction of the valve disc to ensure stable on / off control of the valve disc.

[0018] 3. In this utility model, the design of the limiting rod easily achieves the locking of the slider and the valve disc, ensuring the stable movement of the valve disc when switching between the main valve and the backup valve, ensuring the stable sealing effect of the valve disc on the valve port, and improving the valve sealing performance.

[0019] This utility model features a novel design and simple structure. It uses a single valve disc to switch between the main valve and the backup valve, ensuring normal operation of the valve even when one of the valves is damaged or under maintenance, thus improving the stability of the pipeline system. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the appearance structure of this utility model.

[0021] Figure 2 This is a schematic diagram of the limiting slide structure of this utility model.

[0022] Figure 3 This is a schematic diagram of the internal structure of the valve body of this utility model.

[0023] Figure 4 This is a schematic diagram of the valve disc structure of this utility model.

[0024] Figure 5 This is a front sectional view of the present invention.

[0025] Figure 6 This is a side sectional view of the present invention.

[0026] In the diagram: Valve body 1, valve chamber 11, first valve port 12, second valve port 13, valve cover 14, limit slide groove 15, valve disc 2, valve disc groove 21, limit block 22, valve disc gasket 23, main valve 3, backup valve 4, valve stem mechanism 5, slide bar 51, slider 52, valve stem 53, handwheel 54, support sleeve 541, support rod 542, sealing sleeve 55, limit assembly 56, limit rod 561, connecting plate 562, rotating sleeve 563, thread 564. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0028] Reference Figure 1-6 A valve with a backup structure includes a valve body 1, a valve cavity 11 within the valve body 1, a valve disc 2 within the valve cavity 11, and a first valve port 12 and a second valve port 13 extending through the valve cavity 11. A main valve 3 is located opposite the first valve port 12, and a backup valve 4 is located opposite the second valve port 13. A valve cover 14 is provided on the valve body 1 corresponding to both the main valve 3 and the backup valve 4. The first valve port 12 and the second valve port 13 are used to connect to a pipeline. The valve disc 2 is used to block either the first valve port 12 or the second valve port 13 to control the flow of the pipeline. The main valve 3 and the backup valve 4 control the first valve port 12 and the second valve port 13 respectively. When the main valve 3 fails or requires maintenance, the backup valve 4 can be used to close the pipeline, facilitating pipeline control during maintenance or emergency situations.

[0029] Both the main valve 3 and the backup valve 4 are equipped with valve stem mechanisms 5. The valve stem mechanism 5 includes a valve disc groove 21 corresponding to the valve disc 2, a slide rod 51 disposed in the valve disc groove 21, a slider 52 slidably mounted on the slide rod 51, and a valve stem 53 fixedly connected to the slider 52. The other end of the valve stem 53 passes through the valve cover 14 and is equipped with a handwheel assembly for controlling the raising and lowering of the valve stem 53. A sealing sleeve 55 is provided on the valve cover 14 corresponding to the valve stem 53. The valve disc 2 can block and seal the first valve port 12 and the second valve port 13. The valve stem 53 is equipped with a limiting assembly 56 for restricting the movement direction of the valve disc 2. Through the design of the slide rod 51 and the slider 52, when the main valve 3 is controlled, the valve stem mechanism 5 in the backup valve 4 can slide with the valve disc 2, avoiding affecting the main valve 3's control of the valve disc 2. Similarly, when the backup valve 4 is controlled, it can also avoid affecting the backup valve 4, allowing the backup valve 4 in the valve body 1 to block the second valve port 13 to control the opening and closing of the valve body 1.

[0030] When using the main valve 3 for control, the movement direction of the valve disc 2 is controlled by the limiting component 56, restricting the valve disc 2 to move only along the path between the main valve 3 and the first valve port 12. The sliding of the valve stem 53 is controlled by the handwheel component to cause the valve disc 2 to block or release the first valve port 12, thereby controlling the on / off state of the pipeline. When switching to the backup valve 4 for control, the limiting component 56 of the main valve 3 is removed, and the limiting component 56 of the backup valve 4 is activated, controlling the valve disc 2 to move only along the path between the backup valve 4 and the second valve port 13, thus controlling the on / off state of the pipeline through the backup valve 4. The backup valve structure design of the backup valve 4 effectively controls the on / off state of the valve body 1 when the main valve 3 is damaged or requires maintenance, significantly improving the stability of the pipeline system.

[0031] In this technical solution, such as Figure 1-6 As shown, the handwheel assembly includes a handwheel 54 located at the upper end of the valve stem 53. The handwheel 54 has a threaded sleeve that is threadedly connected to the valve stem 53. A support sleeve 541 is rotatably connected to the outside of the threaded sleeve. Multiple support rods 542 are fixedly connected between the support sleeve 541 and the valve cover 14. When it is necessary to control the valve stem 53, rotating the handwheel 54 drives the valve stem 53 to rise or fall through the threaded connection between the threaded sleeve and the valve stem 53. The support sleeve 541 limits the movement of the handwheel 54 to ensure effective control of the valve stem 53's rise and fall.

[0032] In this technical solution, such as Figure 1-6 As shown, the limiting assembly 56 includes a lifting and lowering linkage plate 562 on the outside of the valve stem 53 and a plurality of limiting rods 561 fixedly disposed on the linkage plate 562. The limiting rods 561 pass inward through the valve cover 14 and penetrate into the slider 52 and the valve disc 2, and the limiting rods 561, slider 52 and valve disc 2 are slidably connected.

[0033] When the main valve 3 controls the valve body 1, the limiting rod 561 in the main valve 3 is inserted into the slider 52 and the valve disc 2 to lock the relative position of the slider 52 and the valve disc 2, preventing the valve disc 2 from sliding in the direction of the backup valve 4. This ensures stable sliding of the valve disc 2 in the direction of the main valve 3 when the main valve 3 is in control, thus guaranteeing stable valve control. When using the backup valve 4, the limiting rod 561 in the main valve 3 is pulled out from the valve disc 2, and the limiting rod 561 in the backup valve 4 is inserted into the valve disc 2, thus enabling the switching of the backup valve 4.

[0034] In this technical solution, such as Figure 1-6 As shown, the valve stem 53 has an integrally formed thread 564 on its side wall, and a rotating sleeve 563 is threadedly connected to it. The rotating sleeve 563 is rotatably mounted on the connecting plate 562. When it is necessary to move the limit rod 561, the rotating sleeve 563 is rotated to engage with the threaded connection of the valve stem 53, causing the rotating sleeve 563 to drive the connecting plate 562 to rise and fall, thereby driving the limit rod 561 to rise and fall. At the same time, the position of the limit rod 561 is locked to avoid affecting the normal operation of the main valve 3 and the backup valve 4 after switching.

[0035] In this technical solution, such as Figure 1-6 As shown, the slide rod 51 has multiple components, all of which pass through the slider 52 and are slidably connected to it. The design of multiple slide rods 51 avoids possible rotation between the slider 52 and the slide rod 51, thereby improving the stability of the valve disc 2's movement and ensuring stable opening and closing control of the valve.

[0036] In this technical solution, such as Figure 1-6 As shown, limit blocks 22 are provided on both the front and rear sides of the valve disc 2, and a cross-shaped limiting groove 15 is correspondingly provided on the inner wall of the valve cavity 11 for the limit blocks 22 to slide within. Through the design of the limit blocks 22 and the limiting groove 15, the movement of the valve disc 2 in abnormal directions is further prevented, and the movement of the valve disc 2 is restricted to the direction between the main valve 3 and the backup valve 4, ensuring stable on / off control of the first valve port 12 and the second valve port 13.

[0037] In this technical solution, such as Figure 1-5 As shown, valve disc pads 23, matching the valve disc 2, are provided in the valve cavity 11 at the positions corresponding to the first valve port 12 and the second valve port 13. The design of the valve disc pads 23 enhances the blocking effect of the valve disc 2 on the first valve port 12 or the second valve port 13, improves the sealing performance of the valve body 1, and ensures the effective use of the valve.

[0038] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A valve with a backup structure, comprising a valve body (1), a valve cavity (11) therein, a valve disc (2) therein, and a first valve port (12) and a second valve port (13) passing through the valve cavity (11), characterized in that, A main valve (3) is provided on the opposite side of the first valve port (12), and a backup valve (4) is provided on the opposite side of the second valve port (13). A valve cover (14) is provided on the valve body (1) corresponding to the main valve (3) and the backup valve (4). Both the main valve (3) and the backup valve (4) are provided with valve stem mechanisms (5). The valve stem mechanism (5) includes a valve disc groove (21) corresponding to the valve disc (2), a slide rod (51) provided in the valve disc groove (21), a slider (52) slidably installed on the slide rod (51), and a valve stem (53) fixedly connected to the slider (52). The other end of the valve stem (53) passes through the valve cover (14) and is provided with a handwheel assembly for controlling the raising and lowering of the valve stem (53). A sealing sleeve (55) is provided on the valve cover (14) corresponding to the valve stem (53). The valve disc (2) can block and close the first valve port (12) and the second valve port (13). The valve stem (53) is provided with a limiting component (56) for limiting the movement direction of the valve disc (2).

2. A valve with a backup structure according to claim 1, characterized in that, The handwheel assembly includes a handwheel (54) provided at the upper end of the valve stem (53). The handwheel (54) is provided with a threaded sleeve that is threadedly connected to the valve stem (53). A support sleeve (541) is rotatably connected to the outside of the threaded sleeve. Multiple support rods (542) are fixedly connected between the support sleeve (541) and the valve cover (14).

3. A valve with a backup structure according to claim 1, characterized in that, The limiting assembly (56) includes a lifting and lowering linkage plate (562) on the outside of the valve stem (53) and a plurality of limiting rods (561) fixedly installed on the linkage plate (562). The limiting rods (561) pass through the valve cover (14) and penetrate into the slider (52) and valve disc (2) on the inside, and the limiting rods (561) are slidably connected to the slider (52) and valve disc (2).

4. A valve with a backup structure according to claim 3, characterized in that, The valve stem (53) has an integrally formed thread (564) on its side wall and a rotating sleeve (563) is threadedly connected to it. The rotating sleeve (563) is rotatably mounted on the connecting plate (562).

5. A valve with a backup structure according to claim 1, characterized in that, The slide bar (51) is provided in multiple parts, all of which pass through the slider (52) and are slidably connected to it.

6. A valve with a backup structure according to claim 1, characterized in that, Limiting blocks (22) are provided on the front and rear sides of the valve disc (2), and a limiting groove (15) in the shape of a cross is provided on the inner wall of the valve cavity (11) for the limiting blocks (22) to slide in.

7. A valve with a backup structure according to claim 1, characterized in that, The valve cavity (11) is provided with valve disc pads (23) that match the valve disc (2) at the positions corresponding to the first valve port (12) and the second valve port (13).

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