Wear-resistant ball valve

Abstract

The utility model relates to the technical field of valves, and discloses a wear-resisting ball valve which comprises a valve body, a valve pipe and a valve ball, the valve pipe penetrates through the valve body and is fixedly installed in the valve body, a spherical cavity is formed in the middle of the valve pipe, and the valve ball is installed in the spherical cavity in a rotating mode. The drainage device is arranged between the valve ball and the valve pipe, when the valve ball is controlled to rotate and the flow speed is adjusted, the drainage device is switched on, the flow dividing and pressure reducing effects are achieved, and the situations that the side wall of the valve ball is abraded and the service life of the valve body is shortened due to the fact that impurities in fluid directly wash the side wall of the valve ball are avoided.

Description

Technical Field

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

[0002] Ball valves are usually used in oil refining, long-distance pipelines, chemicals, papermaking, pharmaceuticals, water conservancy, electricity, municipal administration, steel and other industries, and they play an important role in the national economy. They can rotate 90 degrees. The plug body is a sphere with a circular through hole or channel passing through its axis.

[0003] The application number is 201420537174.7, which discloses a wear-resistant ball valve, belonging to the field of valve technology, including a valve body, a valve seat and a ball located in the valve body. The ball is provided with a ball through hole, and the outer wall of the valve seat is attached to the overall inner wall of the valve body. The inner wall of the valve seat and the hole wall of the ball through hole form a flow channel of a venturi tube structure, which improves the traditional channel structure and realizes the erosion and wear resistance of the valve through the channel structure, effectively preventing the erosion of the valve seat, valve body and valve outlet by the slurry particle medium, and a ceramic layer can also be provided to further improve its wear resistance and corrosion resistance.

[0004] However, there is a disadvantage. The fluid often contains impurities. Therefore, when the ball valve is turned to adjust the flow rate, the fluid directly impacts the side wall of the ball, causing a certain amount of wear on the ball, and leakage may occur later, reducing the service life of the ball valve. Utility Model Content

[0005] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0006] The utility model discloses a wear-resistant ball valve, comprising a valve body, a valve pipe and a valve ball. The valve pipe penetrates the valve body and is fixedly installed inside the valve body. A spherical cavity is opened in the middle of the valve pipe, and the valve ball is rotatably installed inside the spherical cavity.

[0007] Furthermore, a mounting seat is fixedly connected to the side wall of the valve body, a mounting pipe is provided on the upper surface of the mounting seat through the side wall of the valve tube, a clamping platform is fixedly connected to the inner wall of the valve body away from the mounting seat, a pressure cover is cooperated with the end of the mounting seat away from the valve tube, and a limiting cylinder is fixedly connected to the central axis of the upper surface of the pressure cover.

[0008] Furthermore, a valve stem is rotatably mounted in the middle of the limiting cylinder, a clamping plate is fixedly connected to the middle of the valve stem, an upper surface of the clamping plate is in close contact with a lower surface of the gland, and a handle is fixedly mounted on one end of the valve stem away from the inside of the installation pipe.

[0009] Furthermore, the inner wall of the spherical cavity is provided with a first installation groove at both ends along the length direction of the valve tube, and a second installation groove is provided between the side wall of the valve tube and the inner wall of the valve body on one side close to the mounting seat.

[0010] Furthermore, both ends of the valve tube are fixedly connected with connecting flanges, a sealing seat is installed inside the installation groove 1, a plurality of drainage grooves 1 are opened on the inner wall of one side of the sealing seat away from the middle of the spherical cavity, and a clamping seat is installed inside the installation groove 2.

[0011] Furthermore, a through hole is opened in the middle of the valve ball, and a connecting column and a connecting seat are symmetrically fixedly connected on the side wall of the valve ball. The connecting column is rotatably set inside the card base, and the connecting seat is rotatably installed inside the card base. The end of the valve stem away from the handle is fixedly installed inside the connecting seat.

[0012] Furthermore, two groups of drainage grooves 2 are provided on the side wall of the valve ball, and the two groups of drainage grooves 2 are symmetrical along the direction from the connecting column to the connecting seat.

[0013] The utility model has the following beneficial effects:

[0014] (1) The utility model ensures the sealing of the inside of the valve body by setting the sealing seat, and achieves the effect of diversion and pressure reduction by the cooperation of the drainage groove 1 opened inside the valve body and the drainage groove 2 on the side wall of the valve ball, thereby avoiding the situation where the impurities in the fluid directly scour the side wall of the valve ball and cause the side wall of the valve ball to be worn.

[0015] (2) When the handle of the utility model is turned to adjust the flow rate, the drainage groove 2 rotates with the valve ball, and the side wall of the valve ball leaks out and directly contacts the fluid, which increases the impact force. However, the drainage groove 1 is connected with the drainage groove 2, and a small amount of fluid passes through the drainage groove 2 and the drainage groove 1, achieving a buffering effect, and does not affect the flow rate of the fluid too much. The fluid flow rate can still be controlled by turning the handle.

[0016] (3) The length of the drainage grooves on the two sealing seats of the utility model along the length direction of the valve tube is greater than the aperture of the valve ball through hole, thereby ensuring the sealing performance of the valve body when it is closed.

[0017] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 It is a schematic diagram of the structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the internal structure of the utility model;

[0021] Figure 3 This is a schematic diagram of the internal structure of the utility model;

[0022] Figure 4 This is a schematic diagram of the valve tube structure of the utility model;

[0023] Figure 5 This is a schematic diagram of the valve ball structure of the utility model;

[0024] Figure 6 This is a schematic diagram of the structure of the utility model when the valve body is connected;

[0025] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0026] In the figure: 1. valve body; 11. mounting seat; 111. mounting pipe; 12. clamping table; 13. gland; 131. limiting cylinder; 14. valve stem; 141. clamping plate; 142. handle; 2. valve tube; 21. spherical cavity; 22. mounting groove 1; 23. mounting groove 2; 24. connecting flange; 25. sealing seat; 251. drainage groove 1; 26. clamping seat; 3. valve ball; 31. connecting column; 32. connecting seat; 33. drainage groove 2. DETAILED DESCRIPTION

[0027] 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.

[0028] See also Figure 1 - Figure 6 As shown, the utility model is a wear-resistant ball valve, comprising a valve body 1, a valve tube 2 and a valve ball 3. The valve tube 2 passes through the valve body 1 and is fixedly installed inside the valve body 1. A spherical cavity 21 is opened in the middle of the valve tube 2, and the valve ball 3 is rotatably installed inside the spherical cavity 21.

[0029] A mounting seat 11 is fixedly connected to the side wall of the valve body 1, and a mounting pipe 111 is provided on the upper surface of the mounting seat 11 through the side wall of the valve tube 2. A clamping platform 12 is fixedly connected to the inner wall of the valve body 1 away from the mounting seat 11, and a pressure cover 13 is installed at the end of the mounting seat 11 away from the valve tube 2, and a limiting cylinder 131 is fixedly connected to the center axis of the upper surface of the pressure cover 13.

[0030] The valve stem 14 is rotatably mounted in the middle of the limiting cylinder 131 , a clamping plate 141 is fixedly connected to the middle of the valve stem 14 , the upper surface of the clamping plate 141 is in close contact with the lower surface of the gland 13 , and a handle 142 is fixedly mounted on one end of the valve stem 14 away from the inside of the installation pipe 111 .

[0031] The inner wall of the spherical cavity 21 is provided with mounting grooves 1 22 at both ends along the length direction of the valve tube 2 , and the side wall of the valve tube 2 and the inner wall of the valve body 1 close to the mounting seat 11 are provided with mounting grooves 23 .

[0032] Both ends of the valve tube 2 are fixedly connected with connecting flanges 24, and a sealing seat 25 is installed in the installation groove 1 22. A plurality of drainage grooves 1 251 are opened on the inner wall of one side of the sealing seat 25 away from the middle of the spherical cavity 21, and a clamping seat 26 is installed in the installation groove 23.

[0033] A through hole is opened in the middle of the valve ball 3, and a connecting column 31 and a connecting seat 32 are symmetrically fixedly connected on the side wall of the valve ball 3. The connecting column 31 is rotatably set inside the card table 12, and the connecting seat 32 is rotatably installed inside the card seat 26. The end of the valve stem 14 away from the handle 142 is fixedly installed inside the connecting seat 32.

[0034] Two groups of drainage grooves 33 are formed on the side wall of the valve ball 3 , and the two groups of drainage grooves 33 are symmetrical along the direction from the connecting column 31 to the connecting seat 32 .

[0035] When in use, by turning the handle 142, the valve stem 14 and the valve ball 3 are driven to rotate, the angle of the through hole inside the valve ball 3 is changed, and the caliber connected to the valve tube 2 can be adjusted to achieve the effect of controlling the flow rate. When the direction of the through hole inside the valve ball 3 is perpendicular to the direction of the valve tube 2, the side wall of the valve ball 3 closes the valve tube 2, and the valve body can be closed;

[0036] The sealing performance of the valve body is ensured by the setting of the sealing seat 25, and the cooperation between the drainage groove 1 251 opened inside the sealing seat 25 and the drainage groove 2 33 on the side wall of the valve ball 3 achieves the effect of diversion and pressure reduction, thereby preventing the impurities in the fluid from directly scouring the side wall of the valve ball 3 and causing the side wall of the valve ball 3 to be worn;

[0037] Among them, the valve body is normally connected, and when the flow rate is the maximum, the drainage groove 1 251 is separated from the drainage groove 2 33, and the fluid passes through the inside of the valve ball 3. When the handle 142 is turned to adjust the flow rate, the drainage groove 2 33 rotates with the valve ball 3, and the side wall of the valve ball 3 leaks out and directly contacts the fluid, and the impact force increases. However, the drainage groove 1 251 is connected with the drainage groove 2 33, and a small part of the fluid passes through the drainage groove 2 33 and the drainage groove 1 251, achieving a buffering effect, and will not affect the flow rate of the fluid too much. The fluid flow rate can still be controlled by turning the handle 142;

[0038] The length between the drainage grooves 251 on the two sealing seats 25 along the length direction of the valve tube 2 is greater than the aperture of the through hole of the valve ball 3, thereby ensuring the sealing performance of the valve body when it is closed.

[0039] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A wear-resistant ball valve, comprising a valve body (1), a valve tube (2) and a valve ball (3), characterized in that: The valve tube (2) passes through the valve body (1) and is fixedly installed inside the valve body (1); A spherical cavity (21) is provided in the middle of the valve tube (2), and the valve ball (3) is rotatably mounted inside the spherical cavity (21); A through hole is provided in the middle of the valve ball (3), and a connecting column (31) and a connecting seat (32) are symmetrically fixedly connected to the side wall of the valve ball (3); Two groups of drainage grooves 2 (33) are provided on the side wall of the valve ball (3), and the two groups of drainage grooves 2 (33) are symmetrical along the direction from the connecting column (31) to the connecting seat (32).

2. A wear-resistant ball valve according to claim 1, characterized in that: A mounting seat (11) is fixedly connected to the side wall of the valve body (1), and a mounting pipe (111) is provided on the upper surface of the mounting seat (11) through the side wall of the valve tube (2). A clamping table (12) is fixedly connected to the inner wall of the valve body (1) away from the mounting seat (11), and a pressure cover (13) is mounted on the end of the mounting seat (11) away from the valve tube (2). A limiting cylinder (131) is fixedly connected to the center axis of the upper surface of the pressure cover (13).

3. A wear-resistant ball valve according to claim 2, characterized in that: A valve stem (14) is rotatably mounted in the middle of the limiting cylinder (131), a clamping plate (141) is fixedly connected to the middle of the valve stem (14), an upper surface of the clamping plate (141) is in close contact with a lower surface of the gland (13), and a handle (142) is fixedly mounted on one end of the valve stem (14) away from the interior of the installation pipe (111).

4. A wear-resistant ball valve according to claim 3, characterized in that: The inner wall of the spherical cavity (21) is provided with mounting grooves 1 (22) at both ends along the length direction of the valve tube (2), and a mounting groove 2 (23) is provided between the side wall of the valve tube (2) and the inner wall of the valve body (1) on one side close to the mounting seat (11).

5. A wear-resistant ball valve according to claim 4, characterized in that: Both ends of the valve tube (2) are fixedly connected with connecting flanges (24), and a sealing seat (25) is installed in the interior of the first installation groove (22). A plurality of drainage grooves (251) are provided on the inner wall of one side of the sealing seat (25) at the end away from the middle of the spherical cavity (21), and a clamping seat (26) is installed in the interior of the second installation groove (23).

6. A wear-resistant ball valve according to claim 5, characterized in that: The connecting column (31) is rotatably mounted inside the clamping table (12), the connecting seat (32) is rotatably mounted inside the clamping seat (26), and one end of the valve stem (14) away from the handle (142) is fixedly mounted inside the connecting seat (32).

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