Top-mounted ball valve

Abstract

The utility model relates to a top-mounted ball valve, which aims at solving the technical problems that when a valve cover and a ball valve are connected and assembled at present, the compression amount of a pressing spring is large, so that a connecting flange is difficult to align, and the installation is difficult, and comprises a ball valve base, the valve cover and a valve rod, and a plurality of fixing blocks are fixedly arranged on the upper surface of the valve cover; a limiting block is movably installed in the fixing block, an inserting plate is inserted between the fixing block and the limiting block, a connecting plate is fixedly arranged on the lower side face of the limiting block, and a limiting rod penetrating through the side wall of the ball valve base is fixedly arranged on the side face, close to the ball valve base, of the connecting plate; the utility model has the advantages that the ball valve base and the valve cover are assembled and connected quickly, the position of a flange hole is convenient to adjust, the problem that the alignment of flanges is influenced by the compression of a spring is solved, the assembly and the connection of the ball valve base and the valve cover are convenient, and the assembly and the connection of the ball valve base and the valve cover are convenient. And the valve cover is convenient to install.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of top-mounted ball valve, especially to a top-mounted ball valve. BACKGROUND

[0002] The top-mounted ball valve is widely used in oil and gas pipelines, and in oil extraction, oil refining, petrochemical, chemical fiber, metallurgy, power, nuclear power, food and papermaking devices. The top-mounted ball valve is simple and rapid to disassemble and maintain on the pipeline.

[0003] The existing top-mounted ball valve can directly maintain and replace the internal structure after the valve cover is disassembled, without disassembling the whole structure of the ball valve, which is convenient to use. However, the installation of the top-mounted fixed ball valve has the disadvantages that the spring pre-tightening force cannot be adjusted and controlled, and the spring compression amount is large during assembly, which causes the upper cover to be squeezed and the flanges to be difficult to align, resulting in difficult installation. In view of this, the utility model provides a top-mounted ball valve. UTILITY MODEL CONTENTS

[0004] The utility model discloses a top-mounted ball valve to overcome the defects of the prior art and adapt to the actual needs, so as to solve the technical problems that the compression amount of the pressing spring is large when the valve cover and the ball valve are connected and assembled, the connecting flanges are difficult to align, and installation is difficult.

[0005] In order to achieve the purpose of the utility model, the utility model adopts the technical scheme that a top-mounted ball valve is designed, which comprises a ball valve base, a valve cover and a valve stem, a plurality of fixed blocks are fixedly arranged on the upper surface of the valve cover, a limit block is movably installed in the fixed block, a plug-in plate is inserted between the fixed block and the limit block, a connecting plate is fixedly arranged on the lower side surface of the limit block, a limit rod is fixedly arranged on the side surface of the connecting plate close to the ball valve base, and a limit convex ring that is attached to the rod wall of the limit rod is fixedly arranged on the outer wall of the ball valve base.

[0006] The inside of the fixed block is provided with a movable groove combined with the limit block, an elastic support is fixedly arranged on the groove wall corresponding to the slot in the movable groove, and the elastic support is attached to the side surface of the limit block.

[0007] Preferably, the elastic support comprises a fixed ring, the fixed ring is fixedly connected with the groove wall of the movable groove, a plurality of arc-shaped elastic sheets are fixedly arranged on the ring wall of the fixed ring, and the side end of the arc-shaped elastic sheet is inclined to one side of the limit block.

[0008] Preferably, a first insertion slot that is in communication with the movable groove is formed in the upper side plate of the fixed block, a second insertion slot that is in position correspondence with the first insertion slot is formed in the upper side wall of the limit block, the transverse slot width of the second insertion slot is greater than that of the first insertion slot, and the size of the plug-in plate is the same as that of the first insertion slot.

[0009] Preferably, a limiting block is fixed on the side surface of the plug-in plate, and a limiting groove combined with the limiting block is formed on the groove surface of the second insertion slot near the side of the elastic support.

[0010] Preferably, a guide head is fixed on the side end of the limiting rod inside the ball valve base, the diameter of the guide head is smaller than that of the limiting rod, and the connecting surface between the guide head and the limiting rod is a slope.

[0011] Preferably, the connecting plate is an L-shaped plate, and the limiting rod on the connecting plate is parallel and opposite to the limiting block.

[0012] Preferably, the depth of the limiting groove is smaller than the width of the gap between the plug-in plate and the second insertion slot.

[0013] Compared with the prior art, the utility model has the beneficial effects that:

[0014] 1. The ball valve base and the valve cover can be combined at a position limited by the fixed block, the movable block, the plug-in plate, the limiting block, the connecting plate and the limiting rod, the limiting ring can limit the rotation and angle adjustment of the valve cover in the combined state with the ball valve base, thereby facilitating the alignment of the flange holes on both sides and the screw installation, the structure cooperation can reduce the installation difficulty, the disassembly and assembly operation is convenient, the installation speed can be effectively improved, and time and labor are saved.

[0015] 2. The second insertion slot with a large width can facilitate the movement of the limiting block in the movable groove under extrusion, and the elastic limiting of the elastic support can have the effect of stretching and moving, so that the limiting block can be clamped into the limiting groove on the limiting block under the extrusion, thereby fixing the position of the plug-in plate, the position of the limiting block is fixed and not easy to be separated through the structure cooperation, and the stability of the structure cooperation is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Fig. 2 It is a partially cutaway schematic diagram of some structures in the utility model;

[0018] Fig. 3 It is a partially exploded schematic diagram of some structures in the utility model;

[0019] Fig. 4 It is an enlarged schematic diagram of the structure of part A in the utility model.

[0020] In the figure: 1, ball valve base; 2, valve cover; 3, valve stem; 4, fixed block; 401, movable slot; 402, first insertion slot; 5, limiting block; 501, second insertion slot; 502, limiting slot; 6, insertion plate; 601, limiting protrusion; 7, elastic support; 701, fixed ring; 702, arc-shaped elastic sheet; 8, connecting plate; 9, limiting rod; 901, guide head; 10, limiting protruding ring. DETAILED DESCRIPTION

[0021] The utility model is further illustrated below in combination with the drawings and embodiments:

[0022] Embodiment: a top-mounted ball valve, referring to Figs. 1 to 4 , including ball valve base 1, valve cover 2 and valve stem 3, the upper surface of valve cover 2 is fixedly provided with a plurality of fixed blocks 4, the inside of fixed block 4 is movably installed with limiting block 5, and the movable installation is convenient for the combination or separation of limiting block 5 and fixed block 4; insertion plate 6 is inserted between fixed block 4 and limiting block 5, and insertion plate 6 is inserted from top to bottom, which can limit the position of limiting block 5 in fixed block 4, and can ensure that the installation position of limiting block 5 is fixed without being removed; the lower side of limiting block 5 is fixedly provided with connecting plate 8, the side of connecting plate 8 close to ball valve base 1 is fixedly provided with limiting rod 9, the outer wall of ball valve base 1 is fixedly provided with limiting protruding ring 10 that is attached to the rod wall of limiting rod 9, and the valve cover 2 can be fixed on the upper side of the ball valve base 1 through the connection of the two, and at the same time, the clamping connection mode is convenient for the rotational adjustment of the valve cover 2, which can adjust the position of the valve cover 2 and the flange hole on the ball valve base 1, and avoid the influence of the elasticity of the compression spring on the speed of screw installation.

[0023] The inside of fixed block 4 is provided with movable slot 401 combined with limiting block 5, elastic support 7 is fixedly arranged on the slot wall corresponding to the slot opening in movable slot 401, and the side of elastic support 7 is attached to limiting block 5; the size of movable slot 401 is adapted to limiting block 5, which is convenient for the movement of limiting block 5, the setting of elastic support 7 can extrude and limit limiting block 5, achieve the effect of elastic support, so that elastic support 7 can be contracted under the extrusion, the moving range of limiting block 5 is increased, and elastic support 7 can be restored when the acting force is lost, so that limiting block 5 can be pushed out.

[0024] Specifically, the elastic support 7 comprises a fixed ring 701, and the fixed ring 701 is fixedly connected with the groove wall of the movable groove 401; a plurality of arc-shaped elastic sheets 702 are fixedly arranged on the ring wall of the fixed ring 701, and the side end of the arc-shaped elastic sheet 702 is inclined to one side of the limiting block 5; the fixed ring 701 is arranged to facilitate the overall installation on the groove wall of the movable groove 401; the arc-shaped elastic sheet 702 is inclined to one side of the limiting block 5, and can be close to the groove wall of the movable groove 401 when pressed, so as to achieve the effect of elastic support; meanwhile, the arrangement of the arc-shaped structure can reduce the gap between the two, and a plurality of fixed rings 701 can be arranged on the fixed ring 701, so as to improve the compression strength of the whole and prevent deformation, thereby maintaining good elastic support effect.

[0025] Further, the upper side plate of the fixed block 4 is provided with a first insertion groove 402 communicated with the movable groove 401, the upper side wall of the limiting block 5 is provided with a second insertion groove 501 corresponding in position to the first insertion groove 402, the transverse groove width of the second insertion groove 501 is greater than that of the first insertion groove 402, and the size of the insertion plate 6 is the same as that of the first insertion groove 402; the second insertion groove 501 is greater than the size of the insertion plate 6, so as to reserve a moving space, thereby facilitating cooperation with the elastic support 7.

[0026] Further, the side surface of the insertion plate 6 is fixedly provided with a limiting protrusion 601, and the groove surface of the second insertion groove 501 close to the elastic support 7 is provided with a limiting groove 502 combined with the limiting protrusion 601; the insertion plate 6 can be inserted into the second insertion groove 501 after the limiting block 5 is moved to the position, so that the limiting protrusion 601 is positioned corresponding to the limiting groove 502, and then the limiting block 5 can be moved outward by the elastic force of the elastic support 7 after the limiting block 5 is loosened, so that the limiting groove 502 and the limiting protrusion 601 remain in the combined state, thereby fixing the position of the insertion plate 6 and ensuring the fixed connection position without external force.

[0027] Further, the side end of the limiting rod 9 located in the ball valve base 1 is fixedly provided with a guide head 901, the diameter of the guide head 901 is smaller than that of the limiting rod 9, and the connecting surface between the guide head 901 and the limiting rod 9 is an inclined surface; the guide head 901 is arranged to facilitate the insertion of the limiting rod 9 into the limiting hole of the ball valve base 1.

[0028] Further, the connecting plate 8 is an L-shaped plate, and the limiting rod 9 on the connecting plate 8 is parallel and opposite to the limiting block 5; the parallel arrangement facilitates the overall movement and facilitates disassembly and assembly.

[0029] Further, the depth of the limiting groove 502 is smaller than the width of the gap between the insertion plate 6 and the second insertion groove 501; in this way, the limiting protrusion 601 on the insertion plate 6 can enter the second insertion groove 501 and be aligned with the limiting groove 502.

[0030] Working principle: when assembling, the valve cover 2 can be placed on the upper side of the ball valve base 1, then the limiting block 5 is inserted into the fixed block 4 on the valve cover 2, and the limiting rod 9 is in contact with the lower side of the limiting convex ring 10 on the outer wall of the ball valve base 1, so that the position of the valve cover 2 on the ball valve base 1 is fixed, when the limiting block 5 enters the movable groove 401 on the fixed block 4, the elastic supporting part 7 inside can be flattened by pressing, so that the moving range is enlarged, then the plug plate 6 is inserted into the second slot 501 on the limiting block 5 through the first slot 402 on the fixed block 4, after being in place, the limiting block 5 can be loosened, so that the limiting block 5 moves outward under the reset force of the elastic supporting part 7, so that the limiting groove 502 on the second slot 501 groove wall is combined with the limiting block 601 on the side of the plug plate 6, so that the position of the plug plate 6 is limited, so that the installation position of the limiting block 5 is fixed, so that the valve cover 2 is in contact with the upper side of the ball valve base 1, then the valve cover 2 is adjusted by rotating, so that the flange hole on the valve cover 2 is aligned with the flange hole on the ball valve base 1, so that the screw is convenient to install, and through the cooperation of the structure, the spring support in the ball valve base 1 can be avoided when the valve cover 2 is installed, the connecting position is convenient to align, and the installation operation is convenient.

[0031] The embodiments of the utility model discloses the better embodiment, but is not limited to this, the ordinary skill of the art, the spirit of the utility model is appreciated to the above-mentioned embodiment, and different extension and change are made, but as long as not departing from the spirit of the utility model, all are within the protection scope of the utility model.

Claims

1. An upper-mounted ball valve comprising a ball valve base (1), a bonnet (2) and a valve stem (3), characterized in that, The upper surface of the valve cover (2) is fixed with several fixed blocks (4), the inside of the fixed block (4) is movably mounted with a limiting block (5), the fixed block (4) and the limiting block (5) are inserted with an insertion plate (6), the lower side of the limiting block (5) is fixed with a connecting plate (8), the side of the connecting plate (8) close to the ball valve base (1) is fixed with a limiting rod (9), the outer wall of the ball valve base (1) is fixed with a limiting convex ring (10) which is in contact with the rod wall of the limiting rod (9). The inside of the fixed block (4) is provided with a movable groove (401) combined with the limiting block (5), the groove wall of the movable groove (401) corresponding to the slot is fixed with an elastic supporting piece (7), and the side of the elastic supporting piece (7) is in contact with the limiting block (5).

2. The top entry ball valve of claim 1 wherein, The elastic supporting piece (7) comprises a fixed ring (701), and the fixed ring (701) is fixedly connected with the groove wall of the movable groove (401), a plurality of arc-shaped elastic sheets (702) are fixed on the ring wall of the fixed ring (701), and the side end of the arc-shaped elastic sheet (702) is inclined to one side of the limiting block (5).

3. The top entry ball valve of claim 1 wherein, The upper side plate of the fixed block (4) is provided with a first insertion slot (402) in communication with the movable groove (401), the upper side wall of the limiting block (5) is provided with a second insertion slot (501) corresponding in position to the first insertion slot (402), and the transverse slot width of the second insertion slot (501) is greater than the transverse slot width of the first insertion slot (402), and the size of the insertion plate (6) is the same as the size of the first insertion slot (402).

4. The top entry ball valve of claim 3 wherein, The side of the insertion plate (6) is fixed with a limiting convex block (601), and the groove surface of the second insertion slot (501) close to the elastic supporting piece (7) is provided with a limiting groove (502) combined with the limiting convex block (601).

5. The top entry ball valve of claim 1 wherein, The side end of the limiting rod (9) in the ball valve base (1) is fixed with a guide head (901), the diameter of the guide head (901) is smaller than the diameter of the limiting rod (9), and the connecting surface between the guide head (901) and the limiting rod (9) is an inclined surface.

6. The top entry ball valve of claim 1 wherein, The connecting plate (8) is an L-shaped plate, and the limiting rod (9) on the connecting plate (8) is parallel and opposite to the limiting block (5).

7. The top-mounted ball valve of claim 4, wherein The depth of the limiting groove (502) is less than the width of the gap between the insertion plate (6) and the second insertion slot (501).

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