Welded ball valve

Abstract

The utility model relates to the technical field of valves, in particular to a welding ball valve which comprises a valve body, a ball core and a first sealing ring matched with the ball core in a sealing mode, the valve body comprises a main valve body and a first auxiliary valve body arranged on one side of the main valve body, and a sealing cavity for installing the ball core is formed in the main valve body. A first flow channel is formed in the first auxiliary valve body, the main valve body extends to form an extension body surrounding the outer wall of the first auxiliary valve body, a first sealing groove allowing a first sealing ring to be installed is formed between the inner wall of the extension body and the end of the first auxiliary valve body, and the extension body is connected with the first auxiliary valve body in a welded mode. According to the valve body of the ball valve, the sealing groove is directly formed by adjusting the welding position so that the sealing ring can be installed, the production step of turning the interior of the valve body is omitted, and the production efficiency is greatly improved.

Description

Technical Field

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

[0002] The ball valve is a widely used valve with the main features of compact structure, high reliability, easy operation and maintenance. It is suitable for general working media such as water, solvents and natural gas, and is also suitable for media with harsh working conditions. It is suitable for use as an on-off valve or a cut-off valve.

[0003] In order to achieve the desired sealing effect, the ball valve in the prior art will machine multiple sealing grooves inside the valve body for the installation of the sealing ring. During the turning process, the turning tool is inserted into the interior of the valve body, and coolant is sprayed on the processed parts inside the valve body. This results in a poor field of view inside the valve body, making it inconvenient to observe the internal conditions of the valve body and difficult to quickly machine multiple sealing grooves. Therefore, this processing method will result in very low production efficiency. Utility Model Content

[0004] The purpose of the present invention is to overcome the shortcomings and deficiencies of the prior art and to provide a welded ball valve. The valve body of the ball valve of the present invention directly forms a sealing groove for the installation of the sealing ring by adjusting the welding position, eliminating the production step of turning the interior of the valve body and greatly improving production efficiency.

[0005] The technical solution adopted by the present utility model is as follows: a welded ball valve, comprising a valve body, a ball core and a first sealing ring that seals with the ball core, the valve body comprising a main valve body and a first auxiliary valve body arranged on one side of the main valve body, a sealing cavity for installing the ball core is provided inside the main valve body, a first flow channel is provided inside the first auxiliary valve body, an extension body extending from the main valve body surrounding the outer wall of the first auxiliary valve body, a first sealing groove for installing the first sealing ring is formed between the inner wall of the extension body and the end of the first auxiliary valve body, and the extension body and the first auxiliary valve body are connected by welding.

[0006] A second auxiliary valve body is provided on the other side of the main valve body corresponding to the first auxiliary valve body, and a second flow channel is provided inside the second auxiliary valve body. A first bracket is provided at one end of the main valve body away from the first auxiliary valve body, and a second bracket is provided at one end of the second auxiliary valve body. The first bracket and the second bracket are fixedly connected by bolts.

[0007] The ball core is also sealed with a second sealing ring. The first sealing ring and the second sealing ring are respectively located on both sides of the ball core. The second bracket surrounds the outer wall of the second auxiliary valve body. A second sealing groove for installing the second sealing ring is formed between the inner wall of the second bracket and the end of the second auxiliary valve body. The second bracket and the second auxiliary valve body are also connected by welding.

[0008] The first bracket surrounds the outer wall of the main valve body, and the end of the main valve body forms a boss relative to the end face of the first bracket. The first bracket and the main valve body are also connected by welding. The end face of the second bracket is recessed with a groove that matches the boss.

[0009] The inner diameter of the boss is larger than the inner diameter of the second sealing groove.

[0010] A third sealing ring is provided between the boss and the groove.

[0011] It also includes a valve stem and a valve cover, the valve cover is installed on the main valve body, the valve stem passes through the valve cover and the main valve body in sequence and extends into the sealing cavity to be connected with the ball core, the main valve body is provided with a through hole adapted to the valve stem, and one end of the valve stem connected to the ball core is provided with a rotating block, the diameter of the rotating block is larger than the diameter of the through hole.

[0012] The beneficial effects of the present invention are as follows: the valve body of the ball valve of the present invention adopts the method of adjusting the welding position to directly form a sealing groove for the installation of the sealing ring, that is, the welding position between the extension body of the main valve body and the first auxiliary valve body is adjusted, so that the first sealing groove for the installation of the first sealing ring is formed between the inner wall of the extension body and the end of the first auxiliary valve body, eliminating the production step of turning the interior of the valve body, and greatly improving the production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, without paying creative labor, other drawings obtained based on these drawings still fall within the scope of the present invention.

[0014] Figure 1 This is a structural diagram of a welded ball valve of the utility model;

[0015] Figure 2 It is a cross-sectional schematic diagram of the utility model;

[0016] Figure 3 for Figure 2 Schematic diagram of the local enlarged structure at A in the middle;

[0017] Figure 4 This is a schematic diagram of the structure of the connection between the main valve body and the first auxiliary valve body in the present utility model;

[0018] Figure 5 This is a structural diagram of the second auxiliary valve body in the utility model;

[0019] In the figure, 1-ball core, 2-first sealing ring, 3-main valve body, 4-first auxiliary valve body, 5-sealing chamber, 6-first flow channel, 7-extension body, 8-first sealing groove, 9-second auxiliary valve body, 10-second flow channel, 11-first bracket, 12-second bracket, 13-bolt member, 14-second sealing ring, 15-second sealing groove, 16-boss, 17-groove, 18-third sealing ring, 19-valve stem, 20-valve cover, 21-through hole, 22-rotating block. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be described in further detail below with reference to the accompanying drawings.

[0021] It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are for the purpose of distinguishing two non-identical entities or non-identical parameters with the same name. It can be seen that "first" and "second" are only for the convenience of expression and should not be understood as limitations on the embodiments of the present invention. Subsequent embodiments will not explain this one by one.

[0022] The directional and positional terms used in this invention, such as "upper," "lower," "front," "back," "left," "right," "inner," "outer," "top," "bottom," and "side," are used solely to refer to the directions or positions in the accompanying drawings. Therefore, the directional and positional terms used are intended to illustrate and facilitate understanding of this invention and are not intended to limit the scope of protection of this invention.

[0023] like Figures 1 to 5 The figure shows an embodiment of the present invention, a welded ball valve, comprising a valve body, a ball core 1 and a first sealing ring 2 that is sealed with the ball core 1, the valve body comprising a main valve body 3 and a first auxiliary valve body 4 arranged on one side of the main valve body 3, a sealing cavity 5 for installing the ball core 1 is provided inside the main valve body 3, a first flow channel 6 is provided inside the first auxiliary valve body 4, the main valve body 3 is extended with an extension body 7 surrounding the outer wall of the first auxiliary valve body 4, a first sealing groove 8 for installing the first sealing ring 2 is formed between the inner wall of the extension body 7 and the end of the first auxiliary valve body 4, and the extension body 7 and the first auxiliary valve body 4 are connected by welding.

[0024] The beneficial effects of such an arrangement are as follows: the valve body of the ball valve of the utility model directly forms a sealing groove for the installation of the sealing ring by adjusting the welding position, that is, the welding position between the extension body of the main valve body and the first auxiliary valve body is adjusted so that a first sealing groove for the installation of the first sealing ring is formed between the inner wall of the extension body and the end of the first auxiliary valve body, thereby eliminating the production step of turning the interior of the valve body and greatly improving production efficiency.

[0025] It is further configured that a second auxiliary valve body 9 is provided on the other side of the main valve body 3 corresponding to the first auxiliary valve body 4, a second flow channel 10 is provided inside the second auxiliary valve body 9, a first bracket 11 is provided at one end of the main valve body 3 away from the first auxiliary valve body 4, and a second bracket 12 is provided at one end of the second auxiliary valve body 9, and the first bracket 11 and the second bracket 12 are fixedly connected by bolts 13.

[0026] The beneficial effects of this arrangement are as follows: the main valve body can also be detachably connected to the second auxiliary valve body, and the first bracket of the main valve body and the second bracket of the second auxiliary valve body are fixedly connected together by bolts. In this embodiment, the bolts adopt a combination of screws and nuts in the existing technology, and the second auxiliary valve body is removed to disassemble and assemble accessories inside the sealing cavity.

[0027] It is further provided that the ball core 1 is also sealed with a second sealing ring 14, the first sealing ring 2 and the second sealing ring 14 are respectively located on both sides of the ball core 1, the second bracket 12 surrounds the outer wall of the second auxiliary valve body 9, and a second sealing groove 15 for installing the second sealing ring 14 is formed between the inner wall of the second bracket 12 and the end of the second auxiliary valve body 9, and the second bracket 12 and the second auxiliary valve body 9 are also connected by welding.

[0028] The beneficial effects of this arrangement are as follows: the first sealing ring and the second sealing ring are respectively installed on both sides of the ball core for sealing and matching; the second bracket and the second auxiliary valve body are also connected by welding, and the welding position is also adjusted so that the inner wall of the second bracket and the end of the second auxiliary valve body form a second sealing groove for the installation of the second sealing ring; the second sealing groove is also formed by adjusting the welding position, which further optimizes the production and processing steps and improves production efficiency.

[0029] It is further provided that the first bracket 11 surrounds the outer wall of the main valve body 3, and the end of the main valve body 3 forms a boss 16 relative to the end face of the first bracket 11. The first bracket 11 and the main valve body 3 are also connected by welding, and a groove 17 that is compatible with the boss 16 is recessed on the end face of the second bracket 12.

[0030] The beneficial effects of this arrangement are as follows: a boss and a groove are provided between the first bracket and the second bracket, which facilitates docking and installation of the first bracket and the second bracket, and the boss is also formed by adjusting the welding position of the first bracket and the main valve body. This processing method is convenient and fast, and has a high success rate in processing on the outside.

[0031] It is further provided that the inner diameter of the boss 16 is larger than the inner diameter of the second sealing groove 15 .

[0032] The beneficial effects of such an arrangement are as follows: the boss and the groove are also used to ensure the sealing performance of the sealing cavity.

[0033] It is further provided that a third sealing ring 18 is provided between the boss 16 and the groove 17 .

[0034] The beneficial effects of this arrangement are as follows: the sealing effect is further improved by the third sealing ring.

[0035] Further configuration includes a valve stem 19 and a valve cover 20, the valve cover 20 is installed on the main valve body 3, the valve stem 19 passes through the valve cover 20 and the main valve body 3 in sequence and extends into the sealing cavity 5 to be connected to the ball core 1, the main valve body 3 is provided with a through hole 21 adapted to the valve stem 19, and the end of the valve stem 19 connected to the ball core 1 is provided with a rotating block 22, and the diameter of the rotating block 22 is larger than the diameter of the through hole 21.

[0036] The beneficial effects of this arrangement are as follows: the rotating block on the valve stem is larger than the diameter of the through hole, so that the valve stem can only be installed on the main valve body in an inverted manner, that is, the valve stem is installed from the sealing cavity to the outside, and the rotating block is limited in the sealing cavity. The through hole does not need to be processed with a groove for limiting the rotating block, and the valve body wall is used as a valve stem retaining ring, which further optimizes the production and processing process and further improves production efficiency.

[0037] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope covered by the present invention.

Claims

1. A welded ball valve, comprising a valve body, a ball core (1), and a first sealing ring (2) sealingly matched with the ball core (1), characterized in that: The valve body comprises a main valve body (3) and a first auxiliary valve body (4) arranged on one side of the main valve body (3); a sealing cavity (5) for installing a ball core (1) is provided inside the main valve body (3); a first flow channel (6) is provided inside the first auxiliary valve body (4); an extension body (7) extending from the main valve body (3) and surrounding the outer wall of the first auxiliary valve body (4); a first sealing groove (8) for installing a first sealing ring (2) is formed between the inner wall of the extension body (7) and the end of the first auxiliary valve body (4); the extension body (7) and the first auxiliary valve body (4) are connected by welding.

2. A welded ball valve according to claim 1, characterized in that: A second auxiliary valve body (9) is provided on the other side of the main valve body (3) corresponding to the first auxiliary valve body (4), a second flow channel (10) is provided inside the second auxiliary valve body (9), a first bracket (11) is provided on the end of the main valve body (3) away from the first auxiliary valve body (4), a second bracket (12) is provided on one end of the second auxiliary valve body (9), and the first bracket (11) and the second bracket (12) are fixedly connected by a bolt (13).

3. A welded ball valve according to claim 2, characterized in that: The ball core (1) is also sealed with a second sealing ring (14). The first sealing ring (2) and the second sealing ring (14) are respectively located on both sides of the ball core (1). The second bracket (12) surrounds the outer wall of the second auxiliary valve body (9). A second sealing groove (15) for installing the second sealing ring (14) is formed between the inner wall of the second bracket (12) and the end of the second auxiliary valve body (9). The second bracket (12) and the second auxiliary valve body (9) are also connected by welding.

4. A welded ball valve according to claim 3, characterized in that: The first bracket (11) surrounds the outer wall of the main valve body (3), and the end of the main valve body (3) forms a boss (16) relative to the end face of the first bracket (11). The first bracket (11) and the main valve body (3) are also connected by welding. The end face of the second bracket (12) is recessed with a groove (17) that matches the boss (16).

5. A welded ball valve according to claim 4, characterized in that: The inner diameter of the boss (16) is greater than the inner diameter of the second sealing groove (15).

6. The welded ball valve according to claim 4, characterized in that: A third sealing ring (18) is provided between the boss (16) and the groove (17).

7. The welded ball valve according to claim 1, characterized in that: The invention also includes a valve stem (19) and a valve cover (20), wherein the valve cover (20) is mounted on the main valve body (3), and the valve stem (19) sequentially passes through the valve cover (20) and the main valve body (3) and extends into the sealing cavity (5) to be connected with the ball core (1). The main valve body (3) is provided with a through hole (21) adapted to the valve stem (19), and one end of the valve stem (19) connected to the ball core (1) is provided with a rotating block (22), and the diameter of the rotating block (22) is larger than the diameter of the through hole (21).

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