Large-drift-diameter ball valve

Abstract

The utility model discloses a large drift diameter ball valve, relates to ball valve technical field, including valve body, valve seat and valve stem, the top of valve stem is fixedly connected with the rotary handle, the top of valve seat is fixedly connected with the fixed seat, the inner surface wall of fixed seat is in sliding connection with the traverse block, the traverse block is in sliding connection with the valve stem. A contact assembly used for making stable contact between the transverse moving block and the outer surface wall of the valve rod is arranged between the open end of the transverse moving block and the outer surface wall of the valve rod. According to the utility model, after the valve body is adjusted, the pull ring is separated from the limiting block II, the transverse moving block drives the rubber pad to be tightly attached to the outer surface wall of the rough outer ring under the action of the spring, and the pull ring is hung on the limiting block I, so that the pull ring can be prevented from sliding up and down, and the spring ensures that the position of the transverse moving block is stable; and unnecessary deflection of the valve rod can be limited through friction force generated between the rubber pad and the rough outer ring, so that the use stability of the large-drift-diameter ball valve is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of ball valves, in particular to a large-diameter ball valve. Background Art

[0002] The ball valve has a simple structure, small size, light weight, and good sealing performance. As a valve for switching, cutting off or changing the flow direction of the medium, the ball valve only needs to be rotated 90 degrees during use, and the torque is small. Ball valves have been widely used in the fields of petroleum, chemical industry, power generation, papermaking, atomic energy, aviation, and rockets.

[0003] For example, the ball valve provided by patent application number CN202321650417.3 includes a valve body, a tube body and a rotating mechanism, the valve body includes a spherical cavity, a sealing ring, a valve cover, screws, nuts, a spherical valve disc and a support column, the spherical cavity is arranged on the bottom inner wall of the valve body, the purpose of this arrangement is to facilitate the spherical valve disc to be arranged inside the valve body, the spherical valve disc is arranged on the inner side wall of the spherical cavity, the support column is fixedly connected to the lower surface of the spherical valve disc, the support column extends to the inside of the spherical cavity, the support column is rotatably connected to the inner side wall of the spherical cavity, and a channel is opened in the middle of the spherical valve disc, and the channel runs through the spherical valve disc.

[0004] Based on the above search and in combination with the prior art, it is found that in the prior art, large-diameter ball valves similar to those disclosed above mostly use a rotating handle and a valve stem as the starting components of the valve body. In the specific implementation process, the rotating handle and the valve stem are mostly integrated on the upper side of the valve body in an open manner. The valve stem is at risk of being opened and closed unnecessarily due to vibration or accidental touch, resulting in poor stability in the use of large-diameter ball valves. Therefore, a large-diameter ball valve is proposed to improve the above problem. Utility Model Content

[0005] The purpose of the present application is to provide a large-diameter ball valve to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned objectives, the present application provides the following technical solutions: a large-diameter ball valve, comprising a valve body, a valve seat and a valve stem, the top of the valve stem is fixedly connected with a turning handle, the top of the valve seat is fixedly connected with a fixed seat, the inner surface wall of the fixed seat is slidably connected with a transverse block, a contact assembly for stable contact between the transverse block and the outer surface wall of the valve stem is provided between the open end of the transverse block and the outer surface wall of the valve stem, a spring is fixedly connected between the transverse block and the inner surface wall of the fixed seat, the top of the transverse block is fixedly connected with a top block, and a limiting assembly for limiting the transverse block is provided between the top block and the top of the fixed seat.

[0007] As a further supplement to the present solution, a mounting frame is fixedly connected to the bottom of the fixing seat, and a horizontal end of the mounting frame is fixedly connected to the top of the valve seat via a locking rod.

[0008] As a further supplement to the present solution, a rubber block is interference-fitted at the top of the horizontal end of the mounting frame, and the bottom of the rubber block abuts against the top of the locking rod.

[0009] As a further supplement to the present solution, the contact assembly includes a rough outer ring fixedly connected to the outer wall of the valve stem, and the open end of the transverse block is fixedly connected to a rubber pad, and the rubber pad fits tightly with the rough outer ring.

[0010] As a further supplement to the present solution, the outer wall of the top block is slidably connected to the inner wall of the top of the fixing seat through a horizontally arranged transverse groove.

[0011] As a further supplement to the present solution, the limit assembly includes a limit block 1 and a limit block 2 fixedly connected to the top of the fixed seat, the outer wall of the top block is rotatably connected with a pull ring, and the limit block 1 and the limit block 2 are each provided with two groups, and the two groups of the limit block 1 and the limit block 2 are symmetrically distributed on both sides of the transverse groove.

[0012] In summary, the technical effects and advantages of the utility model are:

[0013] 1. In the utility model, the top block is pulled by the pull ring, and the top block slides along the transverse groove while linking the transverse block. The transverse block drives the rubber pad away from the rough outer ring while compressing the spring, and then the pull ring is clamped on the limit block 2. The transverse block maintains a stable state. At this time, the flow of the valve body can be adjusted normally by the cooperation of the turning handle and the valve stem. Similarly, after the valve body adjustment is completed, the pull ring is separated from the limit block 2. The transverse block will drive the rubber pad to fit tightly to the outer wall of the rough outer ring under the action of the spring, and the pull ring will be hung on the limit block 1, so as to avoid the pull ring from sliding up and down. The spring ensures the stable position of the transverse block. The friction generated between the rubber pad and the rough outer ring can limit the unnecessary deflection of the valve stem, thereby ensuring the stability of the large-diameter ball valve.

[0014] 2. In the utility model, the mounting frame is fixed to the valve seat by a locking rod, thereby ensuring the convenience of disassembly and assembly of the fixed seat. At the same time, the rubber block can be inserted into the mounting frame, and the interference fit method ensures the stability of the position of the rubber block itself. The rubber block abuts against the top of the locking rod, thereby limiting the loosening of the locking rod through friction, thereby further ensuring the stability of the use of the large-diameter ball valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 Schematic diagram of the three-dimensional structure in this embodiment;

[0017] Figure 2 Schematic diagram of the rough outer ring structure in this embodiment;

[0018] Figure 3 Schematic diagram of the transverse groove structure in this embodiment;

[0019] Figure 4 It is a schematic diagram of the spring structure in this embodiment.

[0020] In the figure: 1. valve body; 2. valve seat; 3. valve stem; 4. turning handle; 5. mounting frame; 6. rough outer ring; 7. fixing seat; 8. rubber block; 9. limit block 1; 10. limit block 2; 11. pull ring; 12. top block; 13. transverse groove; 14. transverse displacement block; 15. rubber pad; 16. spring. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Example: Reference Figure 1-4 A large-diameter ball valve shown in the figure comprises a valve body 1, a valve seat 2 and a valve stem 3, a rotating handle 4 is fixedly connected to the top of the valve stem 3, a fixed seat 7 is fixedly connected to the top of the valve seat 2, a traverse block 14 is slidably connected to the inner surface wall of the fixed seat 7, a contact assembly for the traverse block 14 to stably contact the outer surface wall of the valve stem 3 is arranged between the open end of the traverse block 14 and the outer surface wall of the valve stem 3, a spring 16 is fixedly connected between the traverse block 14 and the inner surface wall of the fixed seat 7, a top block 12 is fixedly connected to the top of the traverse block 14, and a limiting assembly for limiting the traverse block 14 is arranged between the top block 12 and the top of the fixed seat 7;

[0023] The top block 12 is pulled by the pull ring 11, and the top block 12 slides along the transverse groove 13 while linking the transverse block 14. The transverse block 14 drives the rubber pad 15 away from the rough outer ring 6 while compressing the spring 16, and then the pull ring 11 is clamped on the limit block 2 10, and the transverse block 14 maintains a stable state. At this time, the flow of the valve body 1 can be adjusted normally through the cooperation of the turning handle 4 and the valve stem 3. Similarly, after the adjustment of the valve body 1 is completed, the pull ring 11 is separated from the limit block 2 10. The transverse block 14 will drive the rubber pad 15 to be close to the outer wall of the rough outer ring 6 under the action of the spring 16, and the pull ring 11 is hung on the limit block 1 9, so as to avoid the up and down jumping of the pull ring 11, and the spring 16 ensures the stable position of the transverse block 14. The friction generated between the rubber pad 15 and the rough outer ring 6 can limit the unnecessary deflection of the valve stem 3, thereby ensuring the stability of the large-diameter ball valve.

[0024] A mounting frame 5 is fixedly connected to the bottom of the fixed seat 7, and the horizontal end of the mounting frame 5 is fixedly connected to the top of the valve seat 2 through a locking rod. A rubber block 8 is interference fit at the top of the horizontal end of the mounting frame 5, and the bottom of the rubber block 8 abuts against the top of the locking rod. The mounting frame 5 is fixed to the valve seat 2 through the locking rod, thereby ensuring the convenience of disassembly and assembly of the mounting frame 5. At the same time, the rubber block 8 can be inserted into the horizontal end of the mounting frame 5. The interference fit method ensures the stability of the position of the rubber block 8 itself. The rubber block 8 abuts against the top of the locking rod, so that the loosening of the locking rod can be limited by friction, thereby further ensuring the stability of the use of the large-diameter ball valve.

[0025] The contact assembly includes a rough outer ring 6 fixedly connected to the outer wall of the valve stem 3, and a rubber pad 15 is fixedly connected to the open end of the transverse displacement block 14. The rubber pad 15 fits tightly with the rough outer ring 6. The rubber pad 15 and the rough outer ring 6 ensure the stability of the contact between the transverse displacement block 14 and the valve stem 3.

[0026] The outer wall of the top block 12 is slidably connected to the inner wall of the top of the fixed seat 7 through a horizontally arranged transverse groove 13, so that the position of the transverse block 14 can be quickly determined. The limiting assembly includes a limiting block 9 and a limiting block 10 fixedly connected to the top of the fixed seat 7. The outer wall of the top block 12 is rotatably connected with a pull ring 11. The limiting block 19 and the limiting block 10 are each provided with two groups, and the two groups of limiting blocks 19 and the limiting blocks 10 are symmetrically distributed on both sides of the transverse groove 13. The transverse block 14 drives the rubber pad 15 away from the rough outer ring 6 while compressing the spring 16, and then the pull ring 11 is clamped on the limiting block 10. The transverse block 14 maintains a stable state. Under the action of the spring 16, the transverse block 14 will drive the rubber pad 15 to be close to the outer wall of the rough outer ring 6, and hang the pull ring 11 on the limiting block 9, so as to avoid the up and down jumping of the pull ring 11.

[0027] The working principle of the utility model is as follows: the top block 12 is pulled by the pull ring 11, and the top block 12 slides along the transverse groove 13 while linking the transverse block 14. The transverse block 14 drives the rubber pad 15 away from the rough outer ring 6 while compressing the spring 16, and then the pull ring 11 is clamped on the limit block 10, and the transverse block 14 maintains a stable state. At this time, the flow of the valve body 1 can be adjusted normally through the cooperation of the turning handle 4 and the valve stem 3. Similarly, after the adjustment of the valve body 1 is completed, the pull ring 11 is separated from the limit block 10, and the transverse block 14 will drive the rubber pad 15 to be close to the outer wall of the rough outer ring 6 under the action of the spring 16, and the pull ring 11 is hung on the limit block 9 , so as to avoid the up and down jumping of the pull ring 11, and the spring 16 ensures the stable position of the lateral block 14. The friction force generated between the rubber pad 15 and the rough outer ring 6 can limit the unnecessary deflection of the valve stem 3, thereby ensuring the stability of the large-diameter ball valve. The mounting frame 5 is fixed to the valve seat 2 by a locking rod, thereby ensuring the convenience of disassembly and assembly of the mounting frame 5. At the same time, the rubber block 8 can be inserted into the horizontal end of the mounting frame 5. The interference fit method ensures the stable position of the rubber block 8 itself. The rubber block 8 abuts against the top of the locking rod, so that the loosening of the locking rod can be limited by friction, thereby further ensuring the stability of the large-diameter ball valve.

[0028] Finally, it should be noted that the above is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A large-diameter ball valve, comprising a valve body (1), a valve seat (2) and a valve stem (3), characterized in that: The top of the valve stem (3) is fixedly connected to a handle (4), the top of the valve seat (2) is fixedly connected to a fixed seat (7), the inner surface wall of the fixed seat (7) is slidably connected to a transverse block (14), a contact component for stably contacting the transverse block (14) with the outer surface wall of the valve stem (3) is provided between the open end of the transverse block (14) and the outer surface wall of the valve stem (3), a spring (16) is fixedly connected between the transverse block (14) and the inner surface wall of the fixed seat (7), the top of the transverse block (14) is fixedly connected to a top block (12), and a limit assembly for limiting the transverse block (14) is provided between the top block (12) and the top of the fixed seat (7).

2. A large diameter ball valve according to claim 1, characterized in that: The bottom of the fixed seat (7) is fixedly connected to a mounting frame (5), and the horizontal end of the mounting frame (5) is fixedly connected to the top of the valve seat (2) via a locking rod.

3. A large diameter ball valve according to claim 2, characterized in that: A rubber block (8) is interference-fitted on the top of the horizontal end of the mounting frame (5), and the bottom of the rubber block (8) abuts against the top of the locking rod.

4. A large diameter ball valve according to claim 3, characterized in that: The contact assembly comprises a rough outer ring (6) fixedly connected to the outer wall of the valve stem (3); the open end of the transverse displacement block (14) is fixedly connected to a rubber pad (15); the rubber pad (15) is tightly fitted to the rough outer ring (6).

5. A large diameter ball valve according to claim 4, characterized in that: The outer surface wall of the top block (12) is slidably connected to the inner surface wall of the top of the fixing seat (7) via a horizontally arranged transverse groove (13).

6. A large diameter ball valve according to claim 5, characterized in that: The limit assembly comprises a limit block 1 (9) and a limit block 2 (10) fixedly connected to the top of the fixed seat (7); the outer wall of the top block (12) is rotatably connected with a pull ring (11); the limit block 1 (9) and the limit block 2 (10) are each provided with two groups, and the two groups of the limit block 1 (9) and the limit block 2 (10) are symmetrically distributed on both sides of the transverse groove (13).

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