Gate valve opening and closing tool

Abstract

The utility model discloses a gate valve opening and closing tool which comprises a T-shaped body. The bottom of the T-shaped body is connected with a clamping piece through a ratchet. During operation, for a buried pipeline, firstly, one end of the transverse rod of the T-shaped main body is inserted into an opening hole of an inspection well cover, the far end of the vertical rod is held by a hand, the inspection well cover can be opened according to the lever principle, then a tool is turned, the clamping piece is inserted into a hand wheel of a gate valve, the transverse rod serves as a handle at the moment, and the hand wheel of the gate valve can be easily rotated due to the fact that the transverse rod has enough length and is combined with a ratchet wheel. Corresponding to an elevated pipeline, an operator stands on the ground, lifts the tool to enable the clamping piece to be inserted into the gate valve hand wheel, and then rotates the T-shaped main body, so that the gate valve can be opened. Due to the ratchet wheel, the two hands do not need to be exchanged, and the tool cannot fall off. And the safety is high. Due to the fact that the vertical rod of the T-shaped body is long, even if the valve element of the gate valve pops up under the pressure of a pipeline, the operator has enough time to avoid the valve element.

Description

Technical Field

[0001] This utility model relates to the technical field of valve maintenance tools, specifically a valve opening and closing tool. Background Technology

[0002] Water supply pipelines, air supply pipelines, and sewage pipelines are widely installed in various fields, such as mining areas, factories, and cities. Due to the different locations of these pipelines—some are laid underground, others on cable trays, etc.—gate valves are often submerged in water or located in inaccessible areas, making opening and closing them inconvenient. When gate valves are not used for extended periods, factors such as humidity and corrosion increase the difficulty of opening. When the pipeline is pressurized, the gate valve experiences significant opening resistance due to internal pressure, requiring external force to open. There is also the possibility of gate valve core breakage, mainly caused by corrosion or wear during use. Once the valve core detaches, it loses its connection function, and under excessive pressure, it can eject and cause injury. Static-distance gate valves pose a significant hazard.

[0003] In addition, the gate valves of buried pipelines are usually located inside the pipeline in the well. The well cover is heavy and inconvenient to open. Improper opening may cause injury to people by squeezing their hands. Utility Model Content

[0004] The technical problem to be solved by this utility model is how to design a gate valve opening and closing tool that is suitable for underground, elevated, and pressurized applications while ensuring the safety of operators.

[0005] This utility model solves the above-mentioned technical problems through the following technical means:

[0006] The gate valve opening and closing tool includes a T-shaped body; the bottom of the T-shaped body is connected to a locking device via a ratchet.

[0007] As a preferred embodiment of the above solution, the locking component includes a ring, which is coaxial with the ratchet and fixed to the bottom of the ratchet, and at least two pawls are fixed circumferentially on the ring.

[0008] As a preferred embodiment of the above scheme, the length ratio of the horizontal bar to the vertical bar of the T-shaped main body is 2:5 to 1:2.

[0009] As a preferred embodiment of the above solution, at least one end of the crossbar of the T-shaped body can be inserted into the opening hole of the manhole cover.

[0010] As a preferred embodiment of the above solution, the T-shaped body is a hollow rod.

[0011] The advantages of this utility model are:

[0012] During operation, for buried pipelines, first insert one end of the horizontal bar of the T-shaped main body into the opening hole of the manhole cover, hold the far end of the vertical bar, and use leverage to open the manhole cover. Then, turn the tool around and insert the locking piece into the handwheel of the gate valve. At this point, the horizontal bar acts as a handle. Due to the sufficient length of the horizontal bar, combined with the ratchet, the gate valve handwheel can be easily turned. For overhead pipelines, the operator stands on the ground, raises the tool to insert the locking piece into the gate valve handwheel, and then turns the T-shaped main body to open the gate valve. Due to the ratchet, there is no need to switch hands, and the tool will not fall. Safety is high. Furthermore, because the vertical bar of the T-shaped main body is relatively long, even if the valve core of the gate valve pops out under pipeline pressure, the operator has enough time to avoid it. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of the tool in the embodiment of this utility model. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below in conjunction with the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0015] The gate valve opening and closing tool provided in this embodiment, such as Figure 1 As shown, the tool includes a T-shaped body 1; the bottom of the T-shaped body 1 is connected to a locking piece 3 via a ratchet 2. To reduce the weight of the tool, the T-shaped body 1 in this embodiment is welded from a hollow galvanized steel pipe. The galvanized steel pipe has a diameter of approximately 3cm to ensure the necessary strength. Since the gate valve may be located inside the manhole or at a high location, to reduce labor intensity, the vertical rod 12 of the T-shaped body 1 in this embodiment is approximately 150-200cm long, and the horizontal rod 11 is approximately 60-100cm long. This is to eliminate the need for the operator to bend over, and the longer horizontal rod 11 makes it easier to operate. At least one end of the horizontal rod 11 of the T-shaped body 1 can be inserted into the opening hole of the manhole cover.

[0016] When operating the top gate valve, the operator holds both ends of the T-shaped main body crossbar 11 with both hands. When switching hands after a full rotation, the tool is prone to falling. Therefore, in this embodiment, a ratchet 2 is also fixed between the bottom of the T-shaped main body and the locking piece 3. With the addition of the ratchet 2, the operator's hands do not need to leave the crossbar, thus improving safety. The ratchet can be welded to the bottom of the T-shaped main body and is coaxial with the vertical bar of the T-shaped main body. In this embodiment, the ratchet 2 can be welded to the bottom of the vertical bar 12, or it can be detachably connected for easy replacement.

[0017] In this embodiment, the locking component 3 includes a ring 31, which is coaxial with and fixed to the bottom of the ratchet 2. At least two pawls 32 are fixed circumferentially around the ring, with three pawls being optimal, allowing it to engage with the gate valve handwheel. The pawls 32 can also be directly welded to the bottom of the ratchet 2; however, considering the small welding surface between the pawls and the ratchet, which could easily damage the ratchet's panel under stress, a ring is added as a transition, distributing the stress on the pawls across the entire surface of the ratchet. Both the ring and the pawls are made of metal and are welded together. The ring and ratchet are generally fixed by welding.

[0018] During operation, for buried pipelines, first insert one end of the horizontal bar of the T-shaped main body into the opening hole of the manhole cover, hold the far end of the vertical bar, and use leverage to open the manhole cover. Then, turn the tool around and insert the locking piece into the handwheel of the gate valve. At this point, the horizontal bar acts as a handle. Due to the sufficient length of the horizontal bar, combined with the ratchet, the gate valve handwheel can be easily turned. For overhead pipelines, the operator stands on the ground, raises the tool to insert the locking piece into the gate valve handwheel, and then turns the T-shaped main body to open the gate valve. Due to the ratchet, there is no need to switch hands, and the tool will not fall. Safety is high. Furthermore, because the vertical bar of the T-shaped main body is relatively long, even if the valve core of the gate valve pops out under pipeline pressure, the operator has enough time to avoid it.

[0019] This embodiment focuses on combining ratchet and lever principles to simplify tools, save manpower, and provide safety.

[0020] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A gate valve opening and closing tool, characterized in that, It includes a T-shaped main body; the bottom of the T-shaped main body is connected to a locking component via a ratchet; the locking component includes a ring, which is coaxial with the ratchet and fixed to the bottom of the ratchet, and at least two pawls are fixed circumferentially on the ring; the length ratio of the horizontal bar to the vertical bar of the T-shaped main body is 2:5 to 1:

2.

2. The gate valve opening and closing tool according to claim 1, characterized in that, At least one end of the crossbar of the T-shaped body can be inserted into the opening hole of the manhole cover.

3. The gate valve opening and closing tool according to claim 1, characterized in that, The T-shaped main body is a hollow rod.

Images