Gate valve convenient to rotate

Abstract

The utility model relates to the technical field of gate valves, in particular to a gate valve convenient to rotate, which comprises a gate valve body, connecting pipelines are fixedly connected to the left side and the right side of the gate valve body, a shell is fixedly connected above the gate valve body, and a rotatable pinion is mounted on one side in the shell. One side of the small gear is connected with a large gear, the output end of the large gear is fixedly connected with a valve rod arranged in the gate valve body, the top of the small gear is fixedly connected with a bearing wheel located on the upper portion through a connecting column, and an auxiliary rotating structure is further arranged above the bearing wheel; the hand holding firmness of a user is improved through the auxiliary rotating structure, meanwhile, the transmission structure that the small gear drives the large gear is utilized, the force exerted by the hand can be relatively small, in other words, driving can be conducted through small force, and more labor is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of gate valves, in particular to a gate valve which is easy to rotate. Background Art

[0002] A gate valve is a disc that opens and closes the flow. The disc's movement is perpendicular to the flow direction. A gate valve can only be fully opened or closed, and cannot be adjusted or throttled. A gate valve seals through contact between the valve seat and the disc. The sealing surface is typically welded with metal materials such as 1Cr13, STL6, or stainless steel to increase wear resistance. There are two types of discs: rigid and flexible. Depending on the type of disc, gate valves are classified as either rigid or flexible.

[0003] Today's gate valves have the following shortcomings during daily use: usually, during the rotation process, it is necessary to manually hold the handwheel end of the valve by hand to rotate it, but the friction between the circular handwheel and the hand is small, which is not convenient for the user to hold stably and is prone to slipping during the rotation process. At the same time, it requires a lot of force to rotate, which is not labor-saving to use.

[0004] Therefore, it is necessary to design a gate valve that is easy to rotate to solve the above-mentioned problems. Utility Model Content

[0005] The purpose of the utility model is to provide a gate valve that is easy to rotate, so as to solve the problems raised in the above background technology.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A gate valve that is easy to rotate includes a gate valve body, connecting pipes are fixedly connected to the left and right sides of the gate valve body, a shell is fixedly connected to the top of the gate valve body, a rotatable small gear is installed on one side of the interior of the shell, a large gear is connected to one side of the small gear, the output end of the large gear is fixedly connected to a valve stem placed inside the gate valve body, the top of the small gear is fixedly connected to a load-bearing wheel located above through a connecting column, and an auxiliary rotation structure is also provided above the load-bearing wheel.

[0008] As a preferred solution of the present invention, the overall size of the small gear is smaller than that of the large gear, and the small gear and the lower part of the large gear are rotatably connected to the upper part of the gate valve body through bearings.

[0009] As a preferred solution of the present invention, the small gear and the large gear are meshingly connected.

[0010] As a preferred solution of the present invention, the auxiliary rotation structure includes an intermediate connecting plate fixedly installed on the top of the load-bearing wheel, the tops of the left and right sides of the intermediate connecting plate are fixedly connected with threaded cylinders, the internal threads of the threaded cylinders are connected with threaded rods, and the tops of the threaded rods are fixedly connected with pull rings.

[0011] As a preferred solution of the present invention, the threaded rod and the threaded barrel are connected by threads, and the threaded rod and the threaded barrel are locked and fixed by a limiting bolt.

[0012] As a preferred solution of the present invention, a threaded slot is provided through the middle of the intermediate connecting plate, a similar threaded slot is provided through the middle of the load-bearing wheel, and the intermediate connecting plate and the load-bearing wheel are fixedly connected with fixing bolts.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. In the utility model, a gate valve that is easy to rotate is provided. During the use of the gate valve, the pull ring end can be held by the hand, and then the entire load-bearing wheel is rotated, thereby driving the valve stem to rotate, so as to open and close the entire gate valve. In the process of rotation, since the small gear drives the large gear to transmit the operation, the motion is actually decomposed into smaller forces to drive the larger gear. In this way, the force exerted by the hand can be relatively small, that is, it can be driven by a smaller force, which is more labor-saving.

[0015] 2. In the utility model, a gate valve that is easy to rotate is provided. Since the pull ring and the threaded barrel are connected by threads and locked and fixed by limit bolts, the height of the pull ring can be easily adjusted, which is convenient for users to find a suitable height for holding, so as to provide comfort during the rotation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the three-dimensional structure of the utility model after partial disassembly;

[0018] Figure 3 This is a schematic diagram of the three-dimensional structure of the auxiliary rotation structure of the utility model.

[0019] In the figure: 1. Gate valve body; 2. Connecting pipe; 3. Housing; 4. Pinion; 5. Gear; 6. Valve stem; 7. Connecting column; 8. Load-bearing wheel; 9. Auxiliary rotating structure; 91. Intermediate connecting plate; 92. Threaded barrel; 93. Threaded rod; 94. Pull ring; 95. Limit bolt; 10. Fixing bolt; 11. Bearing. DETAILED DESCRIPTION

[0020] The following will combine the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0021] To facilitate understanding of the present invention, a more comprehensive description of the present invention will be provided below with reference to the accompanying drawings. Several embodiments of the present invention are provided. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the present invention.

[0022] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of this invention are intended only to describe specific embodiments and are not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0024] For examples, see Figure 1-3 , the utility model provides a technical solution:

[0025] A gate valve that is easy to rotate includes a gate valve body 1, with connecting pipes 2 fixedly connected to the left and right sides of the gate valve body 1, a shell 3 fixedly connected to the top of the gate valve body 1, a rotatable small gear 4 is installed on one side of the interior of the shell 3, a large gear 5 is connected to one side of the small gear 4, and the output end of the large gear 5 is fixedly connected to a valve stem 6 placed inside the gate valve body 1, and the top of the small gear 4 is fixedly connected to a load-bearing wheel 8 located above through a connecting column 7, and an auxiliary rotation structure 9 is also provided above the load-bearing wheel 8.

[0026] Specifically, the overall size of the pinion 4 is smaller than that of the large gear 5, and the pinion 4 and the lower portion of the large gear 5 are rotatably connected to the upper portion of the gate valve body 1 via a bearing 11; the pinion 4 and the large gear 5 are meshedly connected;

[0027] In this embodiment, when applying force to the load-bearing wheel 8, the small gear 4 will drive the large gear 5 to rotate synchronously. This process actually decomposes the motion into smaller forces to drive the larger gear. In this way, the force applied by the hand can be relatively small, that is, driving can be achieved with a smaller force, which is more labor-saving.

[0028] Specifically, the auxiliary rotating structure 9 includes an intermediate connecting plate 91 fixedly mounted on the top of the load-bearing wheel 8, and threaded cylinders 92 are fixedly connected to the tops of the left and right sides of the intermediate connecting plate 91, and the internal threads of the threaded cylinder 92 are connected to a threaded rod 93, and the top of the threaded rod 93 is fixedly connected to a pull ring 94; by holding the end of the pull ring 94 by hand, the entire load-bearing wheel 8 is rotated, thereby driving the valve stem 6 to rotate, so as to open and close the entire gate valve, thereby improving the firmness of the hand holding process.

[0029] Among them, the threaded rod 93 and the threaded cylinder 92 are connected by threads, and the threaded rod 93 and the threaded cylinder 92 are locked and fixed by limiting bolts 95; since the pull ring 94 and the threaded cylinder 92 are connected by threads and locked and fixed by limiting bolts 95, it is convenient to adjust the height of the pull ring 94, which is convenient for users to find a suitable height for holding, so as to provide comfort during the rotation process.

[0030] Among them, a threaded slot is opened through the middle position of the middle connecting plate 91, and the same threaded slot is opened in the middle position of the load-bearing wheel 8, and the middle connecting plate 91 and the load-bearing wheel 8 are fixedly connected by fixing bolts 10; when needed, the entire auxiliary rotating structure 9 can be installed on the original load-bearing wheel 8 through the fixing bolts 10.

[0031] The working process of the present utility model is as follows: when using the gate valve that is easy to rotate, first, the entire auxiliary rotating structure 9 is installed on the bearing wheel 8 by the fixing bolt 10 and it can be used. When in use, the pull ring 94 end is held by the hand, and then the entire bearing wheel 8 is rotated, thereby driving the valve stem 6 to rotate, so as to open and close the entire gate valve, and improve the firmness of the hand holding process. Since the pull ring 94 and the threaded cylinder 92 are threadedly connected and locked and fixed with a limit bolt 95, it is convenient to adjust the height of the pull ring 94, so that the user can find a suitable height for holding, so as to provide comfort during the rotation process; and in the process of applying force to the bearing wheel 8, the small gear 4 will be driven to drive the large gear 5 to rotate synchronously. This process actually decomposes the motion into smaller forces to drive larger gears. In this way, the force applied by the hand can be relatively small, that is, it can be driven by a smaller force, which is more labor-saving.

[0032] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A gate valve that is easy to rotate, comprising a gate valve body (1), characterized in that: The left and right sides of the gate valve body (1) are fixedly connected to connecting pipes (2); the upper part of the gate valve body (1) is fixedly connected to a housing (3); a rotatable small gear (4) is installed on one side of the interior of the housing (3); a large gear (5) is connected to one side of the small gear (4); the output end of the large gear (5) is fixedly connected to a valve stem (6) disposed inside the gate valve body (1); the top of the small gear (4) is fixedly connected to a load-bearing wheel (8) located above via a connecting column (7); an auxiliary rotation structure (9) is also provided above the load-bearing wheel (8).

2. The gate valve according to claim 1, characterized in that: The overall size of the small gear (4) is smaller than the overall size of the large gear (5), and the lower part of the small gear (4) and the large gear (5) and the upper part of the gate valve body (1) are rotatably connected via a bearing (11).

3. The gate valve according to claim 2, characterized in that: The small gear (4) and the large gear (5) are meshingly connected.

4. The gate valve according to claim 1, characterized in that: The auxiliary rotating structure (9) comprises an intermediate connecting plate (91) fixedly mounted on the top of the load-bearing wheel (8), the tops of the left and right sides of the intermediate connecting plate (91) are fixedly connected with threaded cylinders (92), the internal threads of the threaded cylinders (92) are connected with threaded rods (93), and the tops of the threaded rods (93) are fixedly connected with pull rings (94).

5. The gate valve according to claim 4, characterized in that: The threaded rod (93) and the threaded barrel (92) are connected by threads, and the threaded rod (93) and the threaded barrel (92) are locked and fixed by a limiting bolt (95).

6. The gate valve according to claim 4, characterized in that: A threaded slot is provided through the middle of the intermediate connecting plate (91), and a similar threaded slot is provided through the middle of the load-bearing wheel (8). The intermediate connecting plate (91) and the load-bearing wheel (8) are fixedly connected by fixing bolts (10).

Images