High-temperature-resistant hard-seal wear-resistant valve ball structure

Abstract

The utility model provides a high temperature resistant hard seal wear-resistant valve ball structure, which relates to the technical field of valve balls, and comprises a valve body and a valve rod, the center of the valve body is provided with a wear-resistant inner layer, the middle of the upper part of the valve body is provided with an upper sealing sleeve, the upper sealing sleeve is internally and rotatably connected with the valve rod, and the lower end of the valve rod is provided with a through hole. A valve port is formed in the anti-abrasion inner layer, a sealing layer is arranged on the outer side of the anti-abrasion inner layer, a reinforcing layer is arranged on the outer side of the sealing layer, a left connector is arranged on the left portion of the valve body, a right connector is arranged on the right portion of the valve body, and the left connector and the right connector are both communicated with the valve port. The wear-resistant, sealing, reinforcing and high-temperature-resistant layer structures are gradually arranged between the valve port and the valve body shell and are sequentially thickened and reinforced, so that the wear-resistant, sealing and high-temperature-resistant performances of the valve are guaranteed, and the valve is more durable, safer and more reliable.

Description

Technical Field

[0001] The utility model relates to the technical field of valve balls, in particular to a high-temperature resistant hard-sealed and wear-resistant valve ball structure. Background Art

[0002] With the rapid development of the petrochemical industry, petrochemical equipment continues to develop in the direction of high parameters and large-scale, which puts forward stringent requirements on valves, such as: high temperature resistance, wear resistance, thermal cycle resistance, low torque and zero leakage, which effectively promotes the necessity of developing wear-resistant and high-temperature resistant ball valves.

[0003] In the specification of a wear-resistant and high-temperature resistant metal hard-sealed ball valve in the prior art (Announcement No. CN212297701U), it is mentioned that "the large mouth end of the valve body is fixedly connected to the large mouth end of the valve seat, and the inner side walls of the valve body and the valve seat are provided with sealing grooves, and sealing rings are provided in the two sealing grooves. The sealing rings are fixedly connected to the side walls of the sealing grooves, and two friction copper rings are provided inside the two sealing rings. A sphere is provided inside the two friction copper rings, and a threaded groove is provided in the center of the upper end of the sphere". However, the anti-wear sealing structure in the prior art is arranged near the valve mouth, and the structural arrangement is relatively thin, resulting in that its anti-wear seal is not long-lasting, affecting its service life, and is not safe and stable. Utility Model Content

[0004] In order to overcome the defects of the prior art, a high-temperature resistant hard-sealed wear-resistant valve ball structure is provided to solve the problem that the anti-wear sealing structure in the prior art is arranged near the valve port, the structure is relatively thin, resulting in that the anti-wear seal is not long-lasting, affecting its service life, and is not safe and stable.

[0005] To achieve the above-mentioned purpose, a high-temperature resistant hard-sealed wear-resistant valve ball structure is provided, including a valve body and a valve stem, a wear-resistant inner layer is arranged at the center of the valve body, and an upper sealing sleeve is arranged in the middle of the upper part of the valve body, a valve stem is rotatably connected in the upper sealing sleeve, and a through hole is installed at the lower end of the valve stem, a valve port is opened in the wear-resistant inner layer, and a sealing layer is arranged on the outer side of the wear-resistant inner layer, and a reinforcement layer is arranged on the outer side of the sealing layer.

[0006] Preferably, a left interface is provided on the left portion of the valve body, and a right interface is provided on the right portion of the valve body, and both the left interface and the right interface are communicated with the valve port.

[0007] Preferably, a medium high temperature resistant layer is arranged on the outer side of the reinforcement layer, the medium high temperature resistant layer is made of PPL material, and an outer shell is arranged on the outer side of the medium high temperature resistant layer, and the outer shell is made of cast steel material.

[0008] Preferably, the anti-wear inner layer is made of silicon carbide, and the sealing layer is made of polytetrafluoroethylene.

[0009] Preferably, the material used for the upper sealing sleeve and the reinforcement layer is the same as the material of the outer shell.

[0010] Preferably, a spherical body is provided in the through hole at the lower end of the valve stem, and a turntable is provided at the upper end of the valve stem, and the valve stem is a rotatable structure.

[0011] The beneficial effects of the utility model are:

[0012] 1. The outer surfaces of the left and right interfaces of the utility model are both provided with connecting threads, so that the outer pipes on both sides can be assembled by twisting through the threads, which makes the connection more convenient, faster, more flexible and practical.

[0013] 2. The through hole of the utility model is just in contact with the inner wall of the anti-wear inner layer. The material selected for the anti-wear inner layer is safer and more wear-resistant, so that the ball can rotate and run in the valve port for a long time; at the same time, the setting of the medium and high temperature resistant layer and the anti-wear inner layer is more resistant to high temperature, which can better protect the valve body and is safe and reliable to use.

[0014] 3. The arrangement of the outer shell, the upper sealing sleeve and the reinforcement layer in the utility model is not only strong and firm but also not easy to be damaged, which helps to increase the service life of the ball valve.

[0015] 4. The through hole of the utility model can flexibly rotate and move in the anti-wear inner layer, so that the valve port can be switched smoothly and quickly, and the stem of the valve stem gradually becomes thicker from top to bottom, so that the connection between the upper sealing sleeve is tighter and more reliable, which is helpful for leak prevention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front view schematic diagram of an embodiment of the utility model;

[0017] Figure 2 It is a left side schematic diagram of an embodiment of the utility model;

[0018] Figure 3 It is a top view schematic diagram of an embodiment of the utility model;

[0019] Figure 4 It is a cross-sectional schematic diagram of an embodiment of the utility model.

[0020] In the figure: 1. valve body; 10. outer shell; 11. medium high temperature resistant layer; 12. anti-wear inner layer; 13. valve port; 14. left interface; 15. right interface; 16. upper sealing sleeve; 17. sealing layer; 18. reinforcement layer; 2. valve stem; 20. ball; 21. through hole; 22. turntable. DETAILED DESCRIPTION

[0021] In order to make the technical problems, technical solutions and beneficial effects to be solved by the utility model clearer, the utility model is further described in detail in combination with the accompanying drawings and embodiments. The specific embodiments described herein are only used to explain the utility model, and are not used to limit the utility model. Specific details such as specific system structures and technologies are proposed in order to more thoroughly understand the embodiments of the utility model. The described embodiments are part of the embodiments of the present disclosure, rather than all of the embodiments. However, it should be clear to those skilled in the art that the utility model can also be implemented in other embodiments without these specific details. Based on the embodiments in the present disclosure, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present disclosure.

[0022] The specific implementation of the utility model is described in detail below with reference to the accompanying drawings.

[0023] Figure 1 It is a front view schematic diagram of an embodiment of the utility model, Figure 2 It is a left side schematic diagram of an embodiment of the utility model, Figure 3 A schematic top view of an embodiment of the utility model and Figure 4 It is a cross-sectional schematic diagram of an embodiment of the utility model.

[0024] Reference Figures 1 to 4 As shown, the utility model provides a high-temperature resistant hard-sealed wear-resistant valve ball structure, including a valve body 1 and a valve stem 2, a wear-resistant inner layer 12 is arranged at the center of the valve body 1, and an upper sealing sleeve 16 is arranged in the middle of the upper part of the valve body 1, the valve stem 2 is rotatably connected in the upper sealing sleeve 16, and a through hole 21 is installed at the lower end of the valve stem 2, a valve port 13 is opened in the wear-resistant inner layer 12, and a sealing layer 17 is arranged on the outer side of the wear-resistant inner layer 12, and a reinforcement layer 18 is arranged on the outer side of the sealing layer 17.

[0025] In this embodiment, a left port 14 is disposed on the left portion of the valve body 1 , and a right port 15 is disposed on the right portion of the valve body 1 , and both the left port 14 and the right port 15 are communicated with the valve port 13 .

[0026] As a preferred embodiment, the outer surfaces of the left interface 14 and the right interface 15 of the utility model are both provided with connecting threads, so that the external pipes on both sides can be assembled by twisting through the threads, which makes the connection more convenient, faster, more flexible and practical.

[0027] In this embodiment, a medium and high temperature resistant layer 11 is provided on the outside of the reinforcement layer 18, and the medium and high temperature resistant layer 11 is made of PPL material. An outer shell 10 is provided on the outside of the medium and high temperature resistant layer 11, and the outer shell 10 is made of cast steel material; the wear-resistant inner layer 12 is made of silicon carbide material, and the sealing layer 17 is made of polytetrafluoroethylene material.

[0028] As a preferred embodiment, the through hole 21 of the utility model is in contact with the inner wall of the anti-wear inner layer 12. The material used for the anti-wear inner layer 12 is safer and more wear-resistant, so that the ball can rotate and run in the valve port for a long time; at the same time, the setting of the medium and high temperature resistant layer 11 and the anti-wear inner layer 12 is more resistant to high temperatures, which can better protect the valve body and is safe and reliable to use.

[0029] In this embodiment, the material used for the upper sealing sleeve 16 and the reinforcement layer 18 is the same as the material of the outer shell 10 .

[0030] As a preferred embodiment, the arrangement of the outer shell 10, the upper sealing sleeve 16 and the reinforcement layer 18 in the utility model is not only strong and firm, but also not easy to be damaged, which helps to increase the service life of the ball valve.

[0031] In this embodiment, a ball 20 is provided in a through hole 21 at the lower end of the valve stem 2, and a rotating disk 22 is provided at the upper end of the valve stem 2, and the valve stem 2 is a rotatable structure.

[0032] As a preferred embodiment, the through hole 21 of the utility model can flexibly rotate in the anti-wear inner layer 12, so that the valve opening can be switched smoothly and quickly, and the stem 2 gradually becomes thicker from top to bottom, so that the connection between the upper sealing sleeve 16 is tighter and more reliable, which helps to prevent leakage.

[0033] The utility model can effectively solve the problem in the prior art that the anti-wear sealing structure is arranged near the valve port, the structure is relatively thin, resulting in that the anti-wear seal is not long-lasting, affecting its service life, and is not safe and stable. The utility model gradually arranges anti-wear, sealing, reinforcement and high-temperature resistant layer structures from the valve port to the valve body shell, and thickens and reinforces them in turn, which not only ensures its anti-wear sealing and high-temperature resistant performance, but also makes it more durable, safer and more reliable.

[0034] The above embodiments are used to explain the present invention rather than to limit the present invention. Any modifications and changes made to the present invention within the spirit of the present invention and the scope of the claims for protection shall be included in the protection scope of the present invention.

Claims

1. A high temperature resistant hard seal wear resistant valve ball structure, characterized by: The invention comprises a valve body (1) and a valve stem (2), wherein an anti-wear inner layer (12) is arranged at the center of the valve body (1), and an upper sealing sleeve (16) is arranged in the middle of the upper part of the valve body (1), the valve stem (2) is rotatably connected inside the upper sealing sleeve (16), and a through hole (21) is installed at the lower end of the valve stem (2), a valve port (13) is opened in the anti-wear inner layer (12), and a sealing layer (17) is arranged on the outer side of the anti-wear inner layer (12), and a reinforcement layer (18) is arranged on the outer side of the sealing layer (17).

2. A high temperature resistant hard seal wear resistant valve ball structure according to claim 1, characterized in that: The left portion of the valve body (1) is provided with a left interface (14), and the right portion of the valve body (1) is provided with a right interface (15), and both the left interface (14) and the right interface (15) are arranged in communication with the valve port (13).

3. The high temperature resistant hard seal wear resistant valve ball structure according to claim 1, characterized in that: A medium high temperature resistant layer (11) is arranged on the outer side of the reinforcement layer (18), the medium high temperature resistant layer (11) is made of PPL material, and an outer shell (10) is arranged on the outer side of the medium high temperature resistant layer (11), and the outer shell (10) is made of cast steel material.

4. The high temperature resistant hard seal wear resistant valve ball structure according to claim 1, characterized in that: The anti-wear inner layer (12) is made of silicon carbide, and the sealing layer (17) is made of polytetrafluoroethylene.

5. The high temperature resistant hard seal wear resistant valve ball structure according to claim 1, characterized in that: The material used for the upper sealing sleeve (16) and the reinforcement layer (18) is the same as the material of the outer shell (10).

6. The high temperature resistant hard seal wear resistant valve ball structure according to claim 1, characterized in that: A spherical body (20) is provided in the through hole (21) at the lower end of the valve stem (2), a rotating disk (22) is provided at the upper end of the valve stem (2), and the valve stem (2) is a rotatable structure.

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