Small and medium-sized valve operating tool

Abstract

The invention relates to a small and medium-sized valve operation tool which is a wrench and comprises a wrench handle and a wrench head. The wrench head is a multi-jaw chuck and is connected with the wrench handle through a ratchet wheel structure. The distance between claws of the multi-claw chuck can be adjusted according to the size of the valve, and the multi-claw chuck can be matched with valves of different sizes. And due to the design of the ratchet wheel structure, the tool does not need to be taken down and clamped repeatedly during use, and operation is convenient.

Description

Technical Field

[0001] The invention relates to a power plant, and in particular to a small and medium-sized valve operating tool. Background Art

[0002] The diameters of the pipelines in the power plant are inconsistent, and the required valve sizes change accordingly. The sizes of the matching valve flanges are also different. In addition, there are two ways to fix the flanges. The first one is that the flange rises and falls with the valve stem during rotation, and the second one is that only the valve stem rises and falls during rotation.

[0003] As a common valve operating tool in power plants, the F-type lever has the advantages of being simple, durable, cheap and easy to manufacture, but it also has obvious disadvantages. First, the distance between the two teeth is fixed, and it can only operate valves of corresponding sizes. Therefore, when restoring a large system, you have to carry multiple F-type levers of different sizes. Second, when operating the F-type lever, you need to take it out and then lock it after turning it to a certain angle, and then rotate the flange, repeating the cycle until the valve is fully opened or fully closed, which is laborious and time-consuming. Summary of the invention

[0004] The present invention provides a small and medium-sized valve operating tool, which is intended to be able to operate valves of different sizes and is easy to operate.

[0005] A small and medium-sized valve operating tool, the tool is a wrench, which comprises a wrench handle and a wrench head; the wrench head is a multi-jaw chuck, which is connected to the wrench handle through a ratchet structure.

[0006] A small and medium-sized valve operating tool, the tool is a ratchet wrench, the ratchet wrench consists of a ratchet wrench body and a drive head; the drive head is a multi-jaw chuck, which is connected to the ratchet wrench body through a quick-release structure.

[0007] The above technical solution is further improved, the ratchet wrench is a perforated type, and is provided with a through hole, the through hole passes through the multi-jaw chuck and the ratchet wrench body connected by a quick-release joint, and the through hole is located in the middle position of each claw of the multi-jaw chuck; the through hole can accommodate the up and down movement of the valve stem of the invention which adopts the second flange fixing method in the above background technology.

[0008] The above technical solution is further refined, and each claw of the multi-claw chuck is a long claw with a thread arranged therein to ensure sufficient gripping force.

[0009] The above technical solution is further refined, the quick-release connector includes an inner gear ring and a connecting column, the inner wall of the ratchet of the ratchet wrench body is evenly distributed with a number of teeth to form the inner gear ring, the connecting column is fixedly connected to the multi-jaw chuck and is coaxial with the multi-jaw chuck, and the connecting column passes through the inner gear ring and is engaged with the inner gear ring.

[0010] The above technical solution is further refined, the quick-release joint includes an inner gear ring and a connecting column, the inner wall of the ratchet of the ratchet wrench body is evenly distributed with a plurality of teeth to form the inner gear ring, the connecting column is fixedly connected to the multi-claw chuck and is coaxial with the multi-claw chuck, and the connecting column passes through the inner gear ring and is engaged with the inner gear ring; The connecting column is hollow, and together with the hole arranged on the multi-jaw chuck, forms the through hole.

[0011] The above technical solution is further refined, the multi-claw chuck has a variable diameter disk for adjusting the distance between its claws, a columnar protrusion is arranged at the center of the variable diameter disk, and the columnar protrusion is placed in an open groove arranged on the connecting column and is clearance-matched therewith; A plurality of connecting rods are evenly distributed on the periphery of the connecting column and the multi-claw chuck, and fixedly connect the connecting column and the multi-claw chuck.

[0012] The above technical solution is further refined, the cross-section of the columnar protrusion is T-shaped, and the open groove arranged on the connecting column is T-shaped.

[0013] The advantages of the present invention are reasonable design and simple structure. The distance between the claws of the multi-claw chuck can be adjusted according to the size of the valve, so it can match valves of different sizes. The design of the ratchet structure makes it easy to operate without the need to remove and clamp the tool back and forth when in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is the main view of small and medium-sized valve operating tools.

[0015] Figure 2 It is a top view of small and medium-sized valve operating tools.

[0016] The figure shows a ratchet wrench body 1, a ratchet 1-1, a multi-jaw chuck 2, a gripper 2-1, a reducing disk 2-2, a quick-release structure 3, an inner gear ring 3-1, a connecting column 3-2, a through hole 4, a columnar protrusion 5, an open groove 6, and a connecting rod 7. DETAILED DESCRIPTION

[0017] like Figure 1-2 As shown, a small and medium-sized valve operating tool is a ratchet wrench, which is composed of a ratchet wrench body 1 and a multi-claw chuck 2; the multi-claw chuck 2 and the ratchet wrench body 1 are connected by a quick release structure 3; the ratchet wrench is a perforated type, and a through hole 4 is provided on it, and the through hole 4 passes through the multi-claw chuck 2 and the ratchet wrench body connected by a quick release joint 3, and the through hole 4 is located in the middle of each claw 2-1 of the multi-claw chuck; Each claw 2-1 of the multi-claw chuck is a long claw with a thread arranged therein; The quick-release connector 3 includes an inner gear ring 3-1 and a connecting column 3-2. The inner wall of the ratchet 1-1 of the ratchet wrench body is evenly distributed with a plurality of teeth to form the inner gear ring 3-1. The connecting column 3-2 is fixedly connected to the multi-claw chuck 2 and is coaxial with the multi-claw chuck 2. The connecting column 3-2 passes through the inner gear ring 3-1 and is engaged with the inner gear ring 3-1. The connecting column 3-2 is hollow and forms a through hole 4 with the hole provided on the multi-claw chuck 2. The multi-jaw chuck 2 has a reducing disk 2-2 for adjusting the spacing between its claws 2-1. A columnar protrusion 5 is provided at the center of the reducing disk 2-2. The columnar protrusion 5 is placed in an open groove 6 provided on the connecting column 3-2 and is loosely matched with it. A plurality of connecting rods 7 are evenly distributed on the connecting column 3-2 and the outer periphery of the multi-jaw chuck 2 to fix the connecting column 3-2 and the multi-jaw chuck 2. The cross-section of the columnar protrusion 5 is T-shaped, and the open groove 6 provided on the connecting column is T-shaped.

[0018] When the above-mentioned small and medium-sized valve operating tools are used, the reducing disk of the multi-jaw chuck is rotated to adjust the spacing between the grippers of the multi-jaw chuck to match the flange of the valve, the grippers of the multi-jaw chuck are clamped on the flange of the valve, the ratchet wrench body is rotated, and the flange of the valve is rotated clockwise or counterclockwise to open or close the valve.

[0019] The above embodiments are only for illustrating the technical concept and features of the invention, and their purpose is to enable people familiar with the technology to understand the content of the invention and implement it accordingly, and they cannot be used to limit the protection scope of the invention. Any equivalent changes or modifications made according to the spirit of the invention should be included in the protection scope of the invention.

Claims

1. A small or medium-sized valve operating tool, the tool being a wrench, comprising a wrench handle and a wrench head; characterized in that: The wrench head is a multi-jaw chuck, which is connected to the wrench handle through a ratchet structure.

2. A small or medium-sized valve operating tool, the tool being a ratchet wrench, the ratchet wrench consisting of a ratchet wrench body and a drive head; characterized in that: The driving head is a multi-jaw chuck, which is connected to the ratchet wrench body through a quick-release structure.

3. A small and medium-sized valve operating tool according to claim 2, characterized in that: The ratchet wrench is of a perforated type, and is provided with a through hole thereon. The through hole passes through a multi-jaw chuck and a ratchet wrench body connected by a quick-release joint, and the through hole is located in the middle of each claw of the multi-jaw chuck.

4. A small and medium-sized valve operating tool according to claim 2, characterized in that: Each claw of the multi-claw chuck is a long claw with a thread arranged inside.

5. A small and medium-sized valve operating tool according to claim 2, characterized in that: The quick-release joint includes an inner gear ring and a connecting column. The inner wall of the ratchet of the ratchet wrench body is evenly distributed with a plurality of teeth to form the inner gear ring. The connecting column is fixedly connected to the multi-claw chuck and is coaxial with the multi-claw chuck. The connecting column passes through the inner gear ring and is engaged with the inner gear ring.

6. A small and medium-sized valve operating tool according to claim 3, characterized in that: The quick-release joint includes an inner gear ring and a connecting column. The inner wall of the ratchet of the ratchet wrench body is evenly distributed with a plurality of teeth to form the inner gear ring. The connecting column is fixedly connected to the multi-claw chuck and is coaxial with the multi-claw chuck. The connecting column passes through the inner gear ring and is engaged with the inner gear ring. The connecting column is hollow, and together with the hole arranged on the multi-jaw chuck, forms the through hole.

7. A small or medium-sized valve operating tool according to claim 5 or 6, characterized in that: The multi-jaw chuck has a variable diameter disk for adjusting the distance between its claws, and a columnar protrusion is arranged at the center of the variable diameter disk, and the columnar protrusion is placed in an open groove arranged on the connecting column and is clearance-matched therewith; A plurality of connecting rods are evenly distributed on the periphery of the connecting column and the multi-claw chuck, and fixedly connect the connecting column and the multi-claw chuck.

8. A small and medium-sized valve operating tool according to claim 7, characterized in that: The cross section of the columnar protrusion is T-shaped, and the opening groove arranged on the connecting column is T-shaped.

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