Pneumatic tool for assembling or disassembling ball body of top-mounted ball valve

Abstract

A pneumatic tool for assembling or disassembling a ball body of a top-mounted ball valve comprises a base and a first guide rail on the base, two first sliding blocks are arranged on the first guide rail, clamping devices are arranged on the two first sliding blocks respectively, each clamping device comprises a main support, the main support is arranged on the first sliding blocks, a stretching air cylinder and a second guide rail are arranged on the main support, and the stretching air cylinder is arranged on the second guide rail. The second guide rail is connected with a dragging support through a second sliding block, a piston rod of the stretching air cylinder is connected with the dragging support, a clamping air cylinder is arranged on the dragging support, swing clamping jaws are hinged to the two sides of the dragging support respectively, a piston rod of the clamping air cylinder is connected with a driving head, and one ends of connecting rods are hinged to the two sides of the driving head respectively. The other end of the connecting rod is connected with the swing clamping jaw. After the clamping air cylinder clamps in place, the stretching air cylinder drives the inlet valve seat and the outlet valve seat to overcome spring force to move along the second guide rail and reach the outermost side position by dragging the support and swinging the clamping jaw, the assembled ball is placed into the valve body, and the installation efficiency of the valve is improved.

Description

Technical Field

[0001] The utility model relates to the field of machinery, in particular to a valve, in particular to a pneumatic tool for assembling or disassembling a ball body of a top-entry ball valve. Background Art

[0002] Top-entry ball valves are often used in pipelines for the storage and transportation of liquefied natural gas and in some pipelines requiring on-site maintenance. This type of valve facilitates on-site repair and maintenance. However, during the installation or removal of the ball, since the inlet and outlet valve seats are installed first, the valve seats on both sides are close to the middle of the valve body under the action of spring force, leaving insufficient space for inserting or removing the ball. In the existing technology, manual tools are used to compress the springs, position the valve seats outward, and then install the ball. This method is unsafe, has low installation efficiency, and is labor-intensive. Summary of the Invention

[0003] The purpose of the utility model is to provide a pneumatic tool for assembling or disassembling the ball of a top-entry ball valve. The pneumatic tool for assembling or disassembling the ball of a top-entry ball valve is to solve the technical problems of poor safety, high labor intensity and low installation efficiency when assembling or disassembling the ball of a top-entry ball valve in the prior art.

[0004] The utility model discloses a pneumatic tool for assembling or disassembling a ball of a top-loading ball valve, comprising a base, a first guide rail is provided on the base, two first sliders are provided on the first guide rail, a clamping device is respectively provided on the two first sliders, the two clamping devices are symmetrically arranged, the two clamping devices each comprise a main bracket, the main bracket is arranged on the first slider, a stretching cylinder and a second guide rail are provided on the main bracket, the length direction of the second guide rail is parallel to the length direction of the first guide rail, a dragging bracket is connected to the second guide rail through the second slider, the piston rod of the stretching cylinder is connected to the dragging bracket, a clamping cylinder is provided on the dragging bracket, two sides of the dragging bracket are respectively hinged with a swinging claw, the piston rod of the clamping cylinder is connected to a driving head, two sides of the driving head are respectively hinged with one end of a connecting rod, the other end of the two connecting rods are respectively connected to the two swinging claws, and the control ends of the stretching cylinder and the clamping cylinder are both connected to a controller.

[0005] Furthermore, a height-adjustable support is provided on the base between the two first sliding blocks.

[0006] Compared with the existing technology, the present invention has a positive and obvious effect. First, the ball valve is placed on the height-adjustable support, the height of the ball valve is adjusted to an appropriate level, the clamping devices on both sides are moved along the first guide rail, close to the ball valve, and the swinging claws on both sides are respectively extended into the inlet and outlet cavities of the ball valve. The clamping button of the controller is activated, and the two clamping cylinders respectively drive the swinging claws through the drive head and the connecting rod to clamp the inner hole grooves of the inlet valve seat and the outlet valve seat. After the clamping is in place, the telescopic button is activated, and the two stretching cylinders respectively drive the inlet valve seat and the outlet valve seat to overcome the spring force and move along the second guide rail to reach the outermost position by dragging the bracket and the swinging claws. Then, the assembled ball is placed inside the valve body. Similarly, the ball can be removed in the reverse direction, which reduces the workload of the assembly workers and improves the efficiency of valve installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 The utility model is a cross-sectional schematic diagram of a pneumatic tool for assembling or disassembling a ball body of a top-entry ball valve.

[0008] Figure 2 It is a cross-sectional schematic diagram of a top-entry ball valve. DETAILED DESCRIPTION

[0009] The following is a further description of the present invention in conjunction with an embodiment. However, the present invention is not limited to the embodiment. All similar variations of the present invention should be included in the scope of protection of the present invention. The use of directions such as up, down, front, back, left, right, center, inside, and outside in the present invention is only for the convenience of description and does not limit the technical solution of the present invention.

[0010] like Figure 1 and Figure 2 As shown, the utility model is a pneumatic tool for assembling or disassembling the ball of a top-loading ball valve, comprising a base 11, a first guide rail 10 is provided on the base 11, two first sliders are provided on the first guide rail 10, and a clamping device is respectively provided on the two first sliders, and the two clamping devices are symmetrically arranged, and the two clamping devices each include a main bracket 1, the main bracket 1 is arranged on the first slider, a stretching cylinder 2 and a second guide rail 3 are provided on the main bracket 1, the length direction of the second guide rail 3 is parallel to the length direction of the first guide rail 10, a dragging bracket 4 is connected to the second guide rail 3 through the second slider, the piston rod of the stretching cylinder 2 is connected to the dragging bracket 4, and a clamping cylinder 5 is provided on the dragging bracket 4, and a swinging claw 6 is respectively hinged on both sides of the dragging bracket 4, and the piston rod of the clamping cylinder 5 is connected to a driving head 7, and one end of a connecting rod 12 is respectively hinged on both sides of the driving head 7, and the other end of the two connecting rods 12 is respectively connected to the two swinging claws 6, and the control ends of the stretching cylinder 2 and the clamping cylinder 5 are both connected to a controller.

[0011] Furthermore, a height-adjustable support 9 is provided on the base 11 between the two first sliding blocks.

[0012] Specifically, the stretching cylinder 2, clamping cylinder 5, swinging jaw 6, controller, height-adjustable support 9, etc. in this embodiment all adopt well-known solutions in the prior art, which are well understood by those skilled in the art and will not be described in detail here.

[0013] The working principle of this embodiment is as follows:

[0014] like Figure 2 As shown, the top entry ball valve includes a valve body 21, a ball 22, an inlet valve seat 23, an outlet valve seat 24, a spring 25, a sealing ring 26 and a valve stem 27.

[0015] During installation, first place the ball valve on the height-adjustable support 9, adjust the height of the ball valve to an appropriate level, move the clamping devices on both sides along the first guide rail 10, close to the ball valve respectively, and the swinging claws 6 on both sides extend into the inlet and outlet cavities of the ball valve respectively, start the clamping button of the controller, and the two clamping cylinders 5 drive the swinging claws 6 to clamp the inner hole grooves of the inlet valve seat 23 and the outlet valve seat 24 respectively through the drive head 7 and the connecting rod 12. After clamping in place, start the telescopic button, and the two stretching cylinders 2 drive the inlet valve seat 23 and the outlet valve seat 24 to overcome the spring force and move along the second guide rail 3 to the outermost position by dragging the bracket 4 and the swinging claws 6. Then, the assembled ball is placed inside the valve body. Similarly, the ball can be removed in reverse, which reduces the work intensity of the assembly workers and improves the installation efficiency of the valve.

Claims

1. A pneumatic tool for assembling or disassembling a top-entry ball valve, characterized in that: The cam is provided with a plurality of movable members, each of which is provided with a plurality of movable members, and the movable members are connected to each other with a plurality of movable members.

2. A pneumatic tool for assembling or disassembling a top-entry ball valve according to claim 1, characterized in that: A height-adjustable support is provided on the base between the two first sliding blocks.

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