Anti-misoperation non-rising stem soft sealing gate valve

Abstract

The utility model relates to the technical field of gate valves, and discloses an anti-misoperation non-rising stem soft sealing gate valve which comprises a valve body, the top of a supporting rod is fixedly connected with a fixing plate, the top of the fixing plate penetrates through and is in threaded connection with a valve rod, the top of the valve rod is fixedly connected with a hand wheel, and the bottom of the valve rod penetrates through and is in sliding connection with a connecting column. Clamping blocks are fixedly connected to the tops of the left side and the right side of the outer ring of the connecting column, the clamping blocks penetrate through and are in sliding connection with the valve rod, a fixing column is fixedly connected to the bottom of the rotating disc, a valve plate penetrates through and is arranged at the bottom of the fixing column, and a limiting rod penetrates through and is in threaded connection with the front side of a limiting block and penetrates through and is in threaded connection with the connecting column. According to the valve plate fixing device, the valve rod slides upwards to slide out of the limiting block, then the valve rod is screwed into the fixing plate to be fixed, and then the limiting rod is screwed into the connecting column and the limiting hole, so that the valve plate is fixed, and misoperation or malicious operation is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of gate valves, in particular to a concealed-stem soft-sealed gate valve which can prevent misoperation. Background Art

[0002] Dark-stem soft-sealed gate valves are widely used in pipelines in the petroleum, chemical, pharmaceutical, metallurgy, coal, electric power, urban water supply and drainage industries to control the flow and cutoff of pipeline media. They are one of the most widely used valves in various fluid transportation projects.

[0003] After searching, the existing Chinese patent announcement number is: CN220016295U, which provides a concealed stem soft-sealed gate valve that can prevent misoperation. When the operating hand wheel is turned by mistake or maliciously, the valve stem drives the block to rotate and trigger the limit switch, so that the clamping electromagnet group is energized to clamp the valve stem, thereby positioning the current position of the valve stem to avoid misoperation or malicious operation. During normal operation, it only needs to be operated after power is off, which will not affect normal operation. The patent has a simple structure and is easy to implement.

[0004] Although the above patent can achieve the purpose of avoiding misoperation or malicious operation, the above-mentioned anti-misoperation concealed stem soft-sealed gate valve still has the following problems: the device drives the block to rotate through the valve stem to trigger the limit switch, so that the clamping electromagnet group is energized to clamp the valve stem. During normal operation, it is necessary to cut off the power before operation. When the electromagnet group fails, the normal use of the gate valve is affected.

[0005] In view of the above problems, a non-rising-stem soft-sealed gate valve which can prevent misoperation is proposed. Utility Model Content

[0006] The utility model aims to provide a concealed-stem soft-sealed gate valve which is resistant to misoperation, and solves the problem in the background technology that the valve stem drives the block to rotate and trigger the limit switch, so that the clamping electromagnet group is energized to clamp the valve stem, and during normal operation, it is necessary to cut off the power before operation. When the electromagnet group fails, the normal use of the gate valve is affected.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a non-misoperation-proof concealed stem soft-sealed gate valve, comprising a valve body, the top of the valve body penetrates and is fixedly connected to a limiting block, the top of the limiting block is provided with a fixing ring, the top of the fixing ring is provided with a valve cover, the four corners of the top of the valve cover are fixedly connected to support rods, the top of the support rod is fixedly connected to a fixing plate, the top of the fixing plate penetrates and is threadedly connected to a valve stem, the top of the valve stem is fixedly connected to a handwheel, the bottom of the valve stem penetrates and is slidably connected to a connecting column, the tops of the left and right sides of the outer ring of the connecting column are fixedly connected with clamping blocks, and the clamping blocks penetrate and are slidably connected to the valve stem, the bottom of the connecting column is fixedly connected to a rotating disk, the bottom of the rotating disk is fixedly connected to a fixing column, the bottom of the fixing column penetrates and is provided with a valve plate, the front side of the limiting block penetrates and is threadedly connected to the limiting rod, and the limiting rod penetrates and is threadedly connected to the connecting column;

[0008] By adopting the above technical solution, the valve stem is slid upward to slide out of the block, and then the valve stem is screwed into the fixing plate to fix the valve stem, and the valve plate is fixed by the limiting rod.

[0009] As a further description of the above technical solution: the valve body is fixedly connected with flanges on both sides, and the flanges are provided with fixing holes on both sides;

[0010] By adopting the above technical solution, the pipeline and the gate valve are fixed together through the flange and the fixing hole.

[0011] As a further description of the above technical solution: fixing bolts are provided through and at the four corners of the top of the fixing ring;

[0012] By adopting the above technical solution, the limit block and the valve cover are fixed together by the fixing bolt and the fixing ring.

[0013] As a further description of the above technical solution: a sealing ring is provided on the inner wall of the fixing ring, and the sealing ring is located between the limit block and the valve cover;

[0014] By adopting the above technical solution, sealing is performed through the sealing ring to prevent the gate valve from leaking.

[0015] As a further description of the above technical solution: a card slot is provided at the bottom of the valve stem, and the card block can slide in the card slot;

[0016] By adopting the above technical solution, the valve stem can drive the valve plate to rotate by sliding the clamping block into the clamping groove.

[0017] As a further description of the above technical solution: a limiting hole is provided on the rear side of the inner wall of the limiting block, and the limiting rod can be screwed into the limiting hole;

[0018] By adopting the above technical solution, the valve plate can be fixed by screwing the limiting rod into the limiting hole.

[0019] As a further description of the above technical solution: a connecting rod is provided through and disposed at the bottom of the valve plate;

[0020] By adopting the above technical solution, the valve plate can be limited by connecting the connecting rod to the valve plate.

[0021] As a further description of the above technical solution: a base is fixedly connected to the bottom of the valve body, and the base is penetrated and rotatably connected to the connecting rod.

[0022] By adopting the above technical solution, the connecting rod is limited by the base to prevent the connecting rod from falling.

[0023] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0024] The utility model provides a concealed-stem soft-sealed gate valve which prevents misoperation. When closing the gate valve, the valve stem is slid upward to make the valve stem slide out of the limit block, and then the valve stem is screwed into the fixing plate to fix the valve stem. Then the limit rod is screwed into the connecting column and the limit hole to fix the valve plate to avoid misoperation or malicious operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0026] Figure 2 This is a schematic diagram of the valve cover structure of the utility model;

[0027] Figure 3 This is a schematic diagram of the valve body structure of the utility model;

[0028] Figure 4 This is a schematic diagram of the valve plate structure of the utility model.

[0029] In the figure: 1. valve body; 2. flange; 3. fixing hole; 4. base; 5. limit block; 6. limit rod; 7. fixing ring; 8. fixing bolt; 9. valve cover; 10. support rod; 11. fixing plate; 12. valve stem; 13. hand wheel; 14. slot; 15. limit hole; 16. sealing ring; 17. valve plate; 18. connecting rod; 19. fixing column; 20. turntable; 21. connecting column; 22. block. DETAILED DESCRIPTION

[0030] 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.

[0031] In order to further understand the content of the utility model, the utility model is described in detail in conjunction with the accompanying drawings.

[0032] Combination Figure 1 and Figure 2 The utility model is a concealed stem soft-sealed gate valve for preventing misoperation, comprising a valve body 1, the top of the valve body 1 penetrates and is fixedly connected to a limit block 5, the top of the limit block 5 is provided with a fixing ring 7, the top of the fixing ring 7 is provided with a valve cover 9, the four corners of the top of the valve cover 9 are fixedly connected to support rods 10, the top of the support rod 10 is fixedly connected to a fixing plate 11, the top of the fixing plate 11 penetrates and is threadedly connected to a valve stem 12, the top of the valve stem 12 is fixedly connected to a hand wheel 13, the bottom of the valve stem 12 penetrates and is slidably connected to a connecting column 21, the top of the left and right sides of the outer ring of the connecting column 21 are fixedly connected to clamping blocks 22, and the clamping blocks 22 are fixedly connected to the top of the left and right sides of the outer ring of the connecting column 21. The block 22 penetrates and is slidably connected to the valve stem 12, a turntable 20 is fixedly connected to the bottom of the connecting column 21, a fixed column 19 is fixedly connected to the bottom of the turntable 20, a valve plate 17 is penetrated and arranged at the bottom of the fixed column 19, a limit rod 6 is penetrated and threadedly connected to the front side of the limit block 5, and the limit rod 6 penetrates and is threadedly connected to the connecting column 21, the limit rod 6 is screwed out of the limit block 5 and the connecting column 21, the valve stem 12 is driven to rotate downward by the hand wheel 13, the valve stem 12 slides into the limit block 5, the clamping block 22 slides into the clamping groove 14, and then the valve plate 17 is driven to rotate by the valve stem 12 to open the gate valve for use.

[0033] Combination Figure 3 and Figure 4 , flanges 2 are fixedly connected to the left and right sides of the valve body 1, fixing holes 3 are provided on the left and right sides of the flange 2, fixing bolts 8 are penetrated and arranged at the four corners of the top of the fixing ring 7, a sealing ring 16 is provided on the inner wall of the fixing ring 7, and the sealing ring 16 is located between the limit block 5 and the valve cover 9, a card slot 14 is provided at the bottom of the valve stem 12, and the card block 22 can slide in the card slot 14, a limit hole 15 is provided on the rear side of the inner wall of the limit block 5, and the limit rod 6 can be screwed into the limit hole 15, a connecting rod 18 is penetrated and arranged at the bottom of the valve plate 17, a base 4 is fixedly connected to the bottom of the valve body 1, and the base 4 and the connecting rod 18 are penetrated and rotatably connected, the valve stem 12 is slid upward to make the valve stem 12 slide out of the limit block 5, and then the valve stem 12 is screwed into the fixing plate 11 to fix the valve stem 12, and then the limit rod 6 is screwed into the connecting column 21 and the limit hole 15, so as to fix the valve plate 17.

[0034] Working principle: When the utility model is in use, firstly screw the limit rod 6 out of the limit block 5 and the connecting column 21, and drive the valve stem 12 to rotate downward through the hand wheel 13, so that the valve stem 12 slides into the limit block 5, and the clamping block 22 slides into the clamping groove 14, and then the valve stem 12 drives the valve plate 17 to rotate, so that the gate valve is opened for use. When closing the gate valve, the valve stem 12 is slid upward to make the valve stem 12 slide out of the limit block 5, and then the valve stem 12 is screwed into the fixing plate 11 to fix the valve stem 12, and then the limit rod 6 is screwed into the connecting column 21 and the limit hole 15, so as to fix the valve plate 17 to avoid misoperation or malicious operation.

[0035] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A non-rising stem soft-sealed gate valve for preventing misoperation, comprising a valve body (1), characterized in that: The top of the valve body (1) passes through and is fixedly connected to a limit block (5); a fixing ring (7) is arranged on the top of the limit block (5); a valve cover (9) is arranged on the top of the fixing ring (7); four corners of the top of the valve cover (9) are fixedly connected to support rods (10); the top of the support rod (10) is fixedly connected to a fixing plate (11); the top of the fixing plate (11) passes through and is threadedly connected to a valve stem (12); the top of the valve stem (12) is fixedly connected to a hand wheel (13); the bottom of the valve stem (12) passes through and is slidably connected to A connecting column (21) is provided, and a clamping block (22) is fixedly connected to the top of the left and right sides of the outer ring of the connecting column (21), and the clamping block (22) penetrates and is slidably connected to the valve stem (12), and the bottom of the connecting column (21) is fixedly connected to a turntable (20), and the bottom of the turntable (20) is fixedly connected to a fixing column (19), and the bottom of the fixing column (19) penetrates and is provided with a valve plate (17), and the front side of the limit block (5) penetrates and is threadedly connected to a limit rod (6), and the limit rod (6) penetrates and is threadedly connected to the connecting column (21).

2. The non-rising stem soft-sealed gate valve for preventing misoperation according to claim 1, characterized in that: The valve body (1) is fixedly connected to flanges (2) on both sides, and the flanges (2) are provided with fixing holes (3) on both sides.

3. The non-rising stem soft-sealed gate valve for preventing misoperation according to claim 1, characterized in that: The four corners of the top of the fixing ring (7) are all penetrated and provided with fixing bolts (8).

4. The non-rising stem soft-sealed gate valve for preventing misoperation according to claim 1, characterized in that: A sealing ring (16) is provided on the inner wall of the fixing ring (7), and the sealing ring (16) is located between the limiting block (5) and the valve cover (9).

5. The non-rising stem soft-sealed gate valve for preventing misoperation according to claim 1, characterized in that: A clamping groove (14) is provided at the bottom of the valve stem (12), and the clamping block (22) can slide in the clamping groove (14).

6. The non-rising stem soft-sealed gate valve for preventing misoperation according to claim 1, characterized in that: A limiting hole (15) is provided on the rear side of the inner wall of the limiting block (5), and the limiting rod (6) can be screwed into the limiting hole (15).

7. The non-rising stem soft-sealed gate valve for preventing misoperation according to claim 1, characterized in that: A connecting rod (18) is provided through the bottom of the valve plate (17).

8. The non-rising stem soft-sealed gate valve for preventing misoperation according to claim 1, characterized in that: The bottom of the valve body (1) is fixedly connected to a base (4), and the base (4) and a connecting rod (18) penetrate and are rotatably connected.

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