Anti-misoperation manual valve

Abstract

The utility model relates to the field of valves, and discloses an anti-misoperation manual valve which comprises a valve body and a lower valve seat, the lower valve seat is welded at the top end of the valve body, an upper valve seat is assembled at the top end of the lower valve seat, a sealing bolt is fixedly connected between the upper valve seat and the lower valve seat, the top of the upper valve seat is movably connected with an operating handle, and the operating handle is fixedly connected with the valve body. A metal ring is welded to the edge of the operating handle, a plurality of sets of concave walls are annularly distributed on the metal ring, a locking groove is formed in the upper valve seat, and a clamping and locking structure for preventing misoperation is arranged in the locking groove. According to the anti-misoperation manual valve, the convex ball, the locking rods, the upper groove, the lower groove, the operation handle and the concave wall are arranged, the valve is provided with the two sets of locking rods which are clamped into the concave wall of the metal ring to fix the operation handle, the two sets of locking rods can be clamped in a front-and-back mode, the situation that the operation handle is touched by mistake, and consequently the position of a valve element deviates is prevented, and the operation safety is improved; the problem that the operating handle is easily touched by external force by mistake is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a manual valve which can prevent misoperation. Background Art

[0002] Manual valve is an important control device widely used in various pipeline systems. It is mainly composed of operating handle, valve body, valve core, valve stem, sealing bolts and valve seat. The operating handle is connected to the valve stem, and the rotation of the valve core in the valve body can be controlled by twisting, so as to open or close the fluid. The twisting design of the manual valve makes it easy to operate. The user can easily adjust the opening and closing of the valve by manually rotating the handle.

[0003] There are some defects in the manual valves currently on the market. Due to the simplicity of the valve structure design, the operating handle is easily touched by external force, resulting in accidental rotation of the valve core. This misoperation may cause accidental leakage or interruption of the fluid in the pipeline, especially in high-pressure pipelines or hazardous chemical pipelines, misoperation may bring serious safety hazards.

[0004] Therefore, there is an urgent need for a manual valve with an anti-misoperation function to solve the above technical defects. Utility Model Content

[0005] The utility model aims to provide a manual valve that prevents misoperation, so as to solve the problem in the above background technology that the operating handle is easily touched by external force by mistake, thus causing the valve core to rotate unexpectedly.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a manual valve to prevent misoperation, comprising a valve body and a lower valve seat, the lower valve seat being welded to the top of the valve body, the upper valve seat being assembled to the top of the lower valve seat, a sealing bolt being fixedly connected between the upper valve seat and the lower valve seat, an operating handle being movably connected to the top of the upper valve seat, a metal ring being welded to the edge of the operating handle, a plurality of groups of concave walls being annularly distributed at the metal ring, a locking groove being arranged in the upper valve seat, a locking structure to prevent misoperation being arranged in the locking groove, the locking structure comprising two groups of fixing blocks, the fixing blocks being located on both sides of the inner wall of the locking groove, two groups of grooves, an upper groove and a lower groove, the lower groove being movably assembled with a locking rod in the lock groove, a convex ball being fixed to the bottom end of the locking rod, and the convex ball being embedded in the upper groove or the lower groove.

[0007] Furthermore, two groups of locking rods are provided, the left locking rod is located inside the front end of the upper valve seat, and the right locking rod is located inside the rear end of the upper valve seat, and the two groups of locking rods are respectively inserted into the concave wall one in front and one in the back.

[0008] Furthermore, the upper groove and the lower groove have the same curvature, and the upper groove and the lower groove are fitted and matched with the convex ball.

[0009] Preferably, a spring groove is provided between the lower groove and the upper groove, a spring rod is transversely provided in the spring groove, one end of the spring rod extending into the lock groove is fixedly connected to a top plate, a straight groove is provided in the spring groove where the top plate is located, and the top plate and the straight groove match each other.

[0010] Furthermore, the straight groove and the spring groove are vertically arranged, and the straight groove and the spring groove form a "T" shape.

[0011] Furthermore, the top sheets are provided with two groups, and the left and right groups of the top sheets are provided correspondingly.

[0012] Preferably, a mounting groove is formed at the top of the convex ball, the bottom end of the locking rod is inserted into the mounting groove, and a mounting screw is fixedly connected between the convex ball and the lower part of the locking rod.

[0013] Furthermore, a channel is provided in the middle position inside the valve body, a valve core that can be raised and lowered is embedded in the channel, a valve stem is fixedly connected to the top of the valve core, the valve stem extends upward out of the top of the upper valve seat, and the top of the valve stem is fixedly connected to the operating handle.

[0014] Compared with the prior art, the utility model has the following beneficial effects: the manual valve for preventing misoperation not only prevents the position deviation of the valve core caused by mis-touching the operating handle, improves the safety of operation, prevents the problem of the convex ball being worn and falling off due to long-term squeezing, and locking failure, but also facilitates replacement and maintenance;

[0015] (1) The valve is provided with a convex ball, a locking rod, an upper groove, a lower groove, an operating handle, and a concave wall. The operating handle is fixed by two sets of locking rods being inserted into the concave wall at the metal ring. When the operating handle needs to be manually turned, the locking rod is pushed downward with force, and the convex ball overcomes the friction force and is inserted into the lower groove from the upper groove. The locking rod is lowered to a distance such that its upper part falls from the concave wall, releasing the rotation restriction of the locking rod and the operating handle, so that the operating handle can be turned left and right. After being tightened, the locking rod is lifted up and inserted into the concave wall. The two sets of locking rods can be clamped one in front and one in back, preventing the position of the valve core from being offset due to accidental touching of the operating handle, thereby improving the safety of operation.

[0016] (2) The convex ball, the upper groove, the lower groove, the slot, the top sheet, the spring rod, and the fixed block are provided. When the convex ball is stuck in the upper groove, the upper part of the lock rod is stuck in the recessed wall. When the convex ball descends, it first presses against the top sheet, and the pressure pushes the top sheet back into the slot. Under the action of the spring rod, the top sheet is pressed into the slot. At this time, the convex ball overcomes the squeezing force of the top sheet and slides downward into the lower groove to achieve unlocking. Similarly, when the convex ball slides upward from the lower groove into the upper groove, locking is completed. This design reduces the deformation caused by the squeezing of the convex ball and the inner wall of the fixed block, and prevents the convex ball from being worn and falling off due to long-term squeezing, and the problem of locking failure.

[0017] (3) The locking rod, the convex ball, the mounting screws and the mounting groove are provided. The locking rod and the convex ball are detachable. The locking rod is exposed to the outside. If the locking rod is broken or damaged, the lower part inserted into the convex ball can be unlocked by the mounting screw, and the locking rod can be pulled out of the mounting groove. After the new locking rod is replaced, it can be fixed by the mounting screw, thereby realizing the function of convenient replacement and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a front view cross-sectional structural schematic diagram of the utility model;

[0019] Figure 2 This is a schematic diagram of the front cross-sectional structure of the lock slot of the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the operating handle of the utility model;

[0021] Figure 4 The utility model is a schematic diagram of the installation method of the lock rod and the convex ball.

[0022] In the figure: 1. operating handle; 2. metal ring; 3. locking rod; 4. sealing bolt; 5. upper valve seat; 6. lower valve seat; 7. valve body; 8. channel; 9. valve core; 10. valve stem; 11. locking groove; 12. convex ball; 13. fixing block; 14. spring groove; 15. spring rod; 16. straight groove; 17. top plate; 18. lower groove; 19. upper groove; 20. concave wall; 21. mounting groove; 22. mounting screws. DETAILED DESCRIPTION

[0023] 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.

[0024] Example 1: Please refer to Figure 1-4A manual valve to prevent misoperation includes a valve body 7 and a lower valve seat 6. The lower valve seat 6 is welded to the top of the valve body 7. The upper valve seat 5 is assembled to the top of the lower valve seat 6. A sealing bolt 4 is fixedly connected between the upper valve seat 5 and the lower valve seat 6. An operating handle 1 is movably connected to the top of the upper valve seat 5. A handle cover 2 is welded to the edge of the operating handle 1. A plurality of groups of concave walls 20 are annularly distributed at the handle cover 2. A locking groove 11 is arranged in the upper valve seat 5. A locking structure to prevent misoperation is arranged in the locking groove 11. The locking structure includes two groups of fixing blocks 13. The fixing blocks 13 are located on the inner wall of the locking groove 11. On both sides, the inner wall of the fixed block 13 is provided with two groups of grooves, an upper groove 19 and a lower groove 18. A locking rod 3 is movably assembled in the lock groove 11 of the lower groove 18. A convex ball 12 is fixed at the bottom end of the locking rod 3. The convex ball 12 is embedded in the upper groove 19 or the lower groove 18. Two groups of locking rods 3 are provided. The locking rod 3 on the left is located inside the front end of the upper valve seat 5, and the locking rod 3 on the right is located inside the rear end of the upper valve seat 5. The two groups of locking rods 3 are respectively inserted into the concave wall 20 one after the other. The upper groove 19 and the lower groove 18 have the same curvature, and the upper groove 19 and the lower groove 18 are matched with the convex ball 12.

[0025] Specifically, Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the valve fixes the operating handle 1 by providing two sets of locking rods 3 that are inserted into the recessed wall 20 at the handle cover 2. When the operating handle 1 needs to be manually turned, the locking rod 3 is pushed downward with force, and the convex ball 12 overcomes the friction force and is inserted into the lower recess 18 from the upper recess 19. The locking rod 3 is lowered by a distance so that its upper part falls from the recessed wall 20, releasing the rotation restriction of the locking rod 3 and the operating handle 1, so that the operating handle 1 can be twisted left and right. After being twisted, the locking rod 3 is lifted up and inserted into the recessed wall 20. The two sets of locking rods 3 can be clamped one in front and one behind to prevent the position of the valve core 9 from being offset due to accidental touching of the operating handle 1.

[0026] Embodiment 2: A spring groove 14 is provided between the lower groove 18 and the upper groove 19, a spring rod 15 is transversely provided in the spring groove 14, one end of the spring rod 15 extending into the lock groove 11 is fixedly connected to a top sheet 17, the spring groove 14 at the position of the top sheet 17 is provided with a straight groove 16, the top sheet 17 and the straight groove 16 match, the straight groove 16 and the spring groove 14 are vertically arranged, the straight groove 16 and the spring groove 14 form a "T", the top sheet 17 is provided with two groups, and the left and right groups of the top sheet 17 are correspondingly arranged;

[0027] Specifically, Figure 1 and Figure 2As shown, when the convex ball 12 is stuck in the upper groove 19, the upper part of the locking rod 3 is stuck in the concave wall 20. When the convex ball 12 descends, it first presses against the top sheet 17, and the pressure pushes the top sheet 17 back into the slot 16. Under the action of the spring rod 15, the top sheet 17 is pressed into the slot 16. At this time, the convex ball 12 overcomes the squeezing force of the top sheet 17 and slides downward into the lower groove 18 to achieve unlocking. Similarly, when the convex ball 12 slides upward from the lower groove 18 into the upper groove 19, the locking is completed.

[0028] Embodiment 3: A mounting groove 21 is provided at the top of the convex ball 12, and the bottom end of the locking rod 3 is inserted into the mounting groove 21. A mounting screw 22 is fixedly connected between the convex ball 12 and the lower part of the locking rod 3. A channel 8 is provided at the middle position inside the valve body 7. A valve core 9 that can be lifted up and down is embedded in the channel 8. A valve stem 10 is fixedly connected to the top of the valve core 9. The valve stem 10 extends upward from the top of the upper valve seat 5, and the top of the valve stem 10 is fixedly connected to the operating handle 1.

[0029] Specifically, Figure 1 and Figure 4 As shown, the locking rod 3 and the convex ball 12 are detachable, and the locking rod 3 is exposed to the outside. If it is broken or damaged, the lower part inserted into the convex ball 12 can be unlocked by installing the screw 22, and the locking rod 3 can be pulled out from the installation groove 21. After replacing the new locking rod 3, it can be fixed by the installation screw 22.

[0030] Working principle: The valve fixes the operating handle 1 by providing two sets of locking rods 3 that are inserted into the concave wall 20 at the handle cover 2. When the operating handle 1 needs to be manually turned, the locking rod 3 is pushed downward with force. When the convex ball 12 is stuck in the upper groove 19, the upper part of the locking rod 3 is stuck in the concave wall 20. When the convex ball 12 descends, it first presses against the top sheet 17. The pressure pushes the top sheet 17 back into the slot 16. Under the action of the spring rod 15, the top sheet 17 is pressed to In the slot 16, the convex ball 12 overcomes the squeezing force of the top plate 17 and slides downward into the lower groove 18. The convex ball 12 overcomes the friction force and is then inserted into the lower groove 18 from the upper groove 19. The locking rod 3 is lowered by a distance so that its upper part falls from the recessed wall 20, releasing the rotation restriction of the locking rod 3 and the operating handle 1, so that the operating handle 1 can be twisted left and right to unlock. After tightening, the locking rod 3 is lifted up and inserted into the recessed wall 20, and the two sets of locking rods 3 can be clamped one in front and one behind.

[0031] It is obvious 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 present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A manual valve for preventing misoperation, comprising a valve body (7) and a lower valve seat (6), characterized in that: A lower valve seat (6) is welded to the top of the valve body (7), an upper valve seat (5) is mounted on the top of the lower valve seat (6), a sealing bolt (4) is fixedly connected between the upper valve seat (5) and the lower valve seat (6), an operating handle (1) is movably connected to the top of the upper valve seat (5), a metal ring (2) is welded to the edge of the operating handle (1), a plurality of groups of concave walls (20) are annularly distributed at the metal ring (2), a locking groove (11) is arranged in the upper valve seat (5), and a locking structure for preventing misoperation is arranged in the locking groove (11); The locking structure comprises two groups of fixing blocks (13), the fixing blocks (13) being located at both sides of the inner wall of the locking groove (11), the inner wall of the fixing blocks (13) being provided with two groups of grooves, an upper groove (19) and a lower groove (18), a locking rod (3) being movably mounted in the locking groove (11) of the lower groove (18), a convex ball (12) being fixed at the bottom end of the locking rod (3), and the convex ball (12) being embedded in the upper groove (19) or the lower groove (18).

2. A manual valve for preventing misoperation according to claim 1, characterized in that: The locking rods (3) are provided in two groups, the left locking rod (3) being located inside the front end of the upper valve seat (5), and the right locking rod (3) being located inside the rear end of the upper valve seat (5), and the two groups of locking rods (3) are respectively inserted into the concave wall (20) one in front and one in the back.

3. A manual valve for preventing misoperation according to claim 1, characterized in that: The upper groove (19) and the lower groove (18) have the same curvature, and the upper groove (19) and the lower groove (18) are fitted and matched with the convex ball (12).

4. A manual valve for preventing misoperation according to claim 1, characterized in that: A spring groove (14) is arranged between the lower groove (18) and the upper groove (19), a spring rod (15) is arranged transversely in the spring groove (14), one end of the spring rod (15) extending into the lock groove (11) is fixedly connected with a top plate (17), a straight groove (16) is provided in the spring groove (14) at the position of the top plate (17), and the top plate (17) and the straight groove (16) match each other.

5. A manual valve for preventing misoperation according to claim 4, characterized in that: The straight groove (16) and the spring groove (14) are arranged vertically, and the straight groove (16) and the spring groove (14) form a "T" shape.

6. The manual valve for preventing misoperation according to claim 4, characterized in that: The top sheets (17) are provided in two groups, and the left and right groups of the top sheets (17) are provided correspondingly.

7. The manual valve for preventing misoperation according to claim 1, characterized in that: The top of the convex ball (12) is provided with a mounting groove (21), the bottom end of the locking rod (3) is inserted into the mounting groove (21), and a mounting screw (22) is fixedly connected between the convex ball (12) and the lower part of the locking rod (3).

8. The manual valve for preventing misoperation according to claim 1, characterized in that: A channel (8) is provided in the middle position inside the valve body (7), and a valve core (9) that can be raised and lowered is embedded in the channel (8). A valve stem (10) is fixedly connected to the top of the valve core (9), and the valve stem (10) extends upward from the top of the upper valve seat (5). The top of the valve stem (10) is fixedly connected to the operating handle (1).

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