High-temperature-resistant powder metallurgy valve seat

Abstract

The utility model discloses a high-temperature-resistant powder metallurgy valve seat, belongs to the technical field of powder metallurgy, and aims to solve the problems that the inner side of the valve seat is abraded, gaps exist, the whole valve seat needs to be replaced and the cost is high due to the fact that a valve guide pipe moves in the valve seat and is used for a long time. A first limiting block and a second limiting block are arranged in the two mounting grooves respectively, a first fixing ring is fixedly mounted at one end of the first limiting block, a second fixing ring is fixedly mounted at one end of the second limiting block, a plurality of threaded holes are formed in the mounting grooves, and fixing bolts are mounted on one side of the first limiting block and one side of the second limiting block in a threaded mode. Through the arrangement of the mounting groove, the first limiting block, the second limiting block, the first fixing ring, the second fixing ring, the threaded hole, the fixing bolt and other structures, after the first fixing ring and the second fixing ring are abraded, disassembly and replacement are convenient, and the use cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of powder metallurgy, and in particular relates to a high-temperature resistant powder metallurgy valve seat. Background Art

[0002] Powder metallurgy is a process technology that produces metal powder or uses metal powder (or a mixture of metal powder and non-metallic powder) as raw material, and then forms and sinters it to manufacture metal materials, composite materials and various types of products. Powder metallurgy is similar to the production of ceramics, both of which belong to powder sintering technology. Therefore, a series of new powder metallurgy technologies can also be used in the preparation of ceramic materials.

[0003] The prior art discloses a high alloy valve seat with super wear resistance and corrosion resistance, with patent announcement number CN215719006U. The patent includes a base, a through hole is provided at the center of the base, an expanded diameter end is provided at one end of the through hole, a plug is provided in the through hole, a boss portion accommodated in the expanded diameter end is provided at one end of the plug, a first annular groove is provided on one end face of the base relative to the expanded diameter end, an elastic ring pad is provided in the first annular groove, a second annular groove is provided on the outer end face of the elastic ring pad, a valve spring is sleeved on the outer wall of the plug, and one end of the valve spring is provided in the second annular groove. However, the following deficiencies still exist in actual use: from a practical point of view, when the existing valve seat is in use, the valve guide moves in the valve seat, and long-term use causes wear on the inner side of the valve seat and a gap exists. The entire valve seat needs to be replaced, which is costly.

[0004] Therefore, a high-temperature resistant powder metallurgy valve seat is needed to solve the problem in the prior art that the valve guide moves inside the valve seat, causing wear on the inner side of the valve seat due to long-term use, resulting in gaps and the need to replace the entire valve seat, which is costly. Utility Model Content

[0005] The utility model aims to provide a high temperature resistant powder metallurgy valve seat to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-temperature resistant powder metallurgy valve seat, comprising a seat body, the top and bottom ends of the seat body are provided with installation grooves, the two installation grooves are respectively provided with a first limit block and a second limit block, one end of the first limit block is fixedly installed with a first fixing ring, one end of the second limit block is fixedly installed with a second fixing ring, a plurality of threaded holes are provided inside the installation groove, one side of the first limit block and the second limit block is threadedly installed with a fixing bolt, and the fixing bolt is threadedly connected to the threaded hole.

[0007] It should be noted in the solution that a circular hole groove is provided on one side of the first limit block and the second limit block, and the screw head of the fixing bolt is located in the circular hole groove.

[0008] It is further worth noting that a limiting column is fixedly installed on one side of the first limiting block and the second limiting block, a limiting hole is provided inside the installation groove, and the limiting column is movably plugged into the limiting hole.

[0009] It should be further explained that oil filling holes are provided on both sides of the seat body.

[0010] As a preferred implementation, a sealing ring is fixedly mounted on one side of the first limiting block and the second limiting block, a sealing groove is opened inside the mounting groove, and the sealing ring is matched with the sealing groove.

[0011] As a preferred embodiment, one end of the first fixing ring is in contact with one end of the second fixing ring, and both the inner surface and the outer surface of the seat body are provided with a heat-resistant layer, and the heat-resistant layer is made of nano-porous heat-insulating material.

[0012] Compared with the prior art, the high temperature resistant powder metallurgy valve seat provided by the utility model has at least the following beneficial effects:

[0013] (1) By setting the structures such as the mounting groove, the first limit block, the second limit block, the first fixing ring, the second fixing ring, the threaded hole and the fixing bolt, the first fixing ring and the second fixing ring can be easily disassembled and replaced after being worn, thereby reducing the use cost.

[0014] (2) The circular hole groove is provided to hide the fixing bolts. The limiting column and the limiting hole are provided to limit the installation of the first fixing ring and the second fixing ring. The oil filling hole is provided to facilitate oil filling inside. The sealing ring and the sealing groove are provided to enhance the connection sealing. The heat-resistant layer is provided to improve the high temperature resistance of the valve seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a structural schematic diagram of another viewing angle of the utility model;

[0017] Figure 3 for Figure 1 Schematic diagram of the enlarged structure of area A in the middle.

[0018] In the figure: 1, seat body; 2, mounting groove; 3, first limit block; 4, second limit block; 5, first fixing ring; 6, second fixing ring; 7, threaded hole; 8, fixing bolt; 9, round hole groove; 10, limit column; 11, limit hole; 12, oil filling hole; 13, sealing ring; 14, sealing groove. DETAILED DESCRIPTION

[0019] 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.

[0020] See also Figure 1-3 The utility model provides a high-temperature resistant powder metallurgy valve seat, including a seat body 1, a mounting groove 2 is provided at the top and the bottom of the seat body 1, a first limit block 3 and a second limit block 4 are respectively provided in the two mounting grooves 2, a first fixing ring 5 is fixedly installed at one end of the first limit block 3, and a second fixing ring 6 is fixedly installed at one end of the second limit block 4, a plurality of threaded holes 7 are provided inside the mounting groove 2, a fixing bolt 8 is threadedly installed on one side of the first limit block 3 and the second limit block 4, and the fixing bolt 8 is threadedly connected with the threaded hole 7.

[0021] like Figure 1 , Figure 2 and Figure 3 As shown, it is worth explaining in detail that a circular hole groove 9 is provided on one side of the first limit block 3 and the second limit block 4, and the screw head of the fixing bolt 8 is located in the circular hole groove 9. Through the setting of the circular hole groove 9, the fixing bolt 8 is hidden, and oil filling holes 12 are provided on both sides of the seat body 1. Through the setting of the oil filling holes 12, it is convenient to fill oil into the interior.

[0022] like Figure 1 , Figure 2 and Figure 3 As shown, it is worth explaining in detail that a sealing ring 13 is fixedly installed on one side of the first limit block 3 and the second limit block 4, a sealing groove 14 is opened inside the installation groove 2, and the sealing ring 13 is adapted to the sealing groove 14. The setting of the sealing ring 13 and the sealing groove 14 enhances the connection sealing.

[0023] This solution has the following working process: when powder metallurgy is working, after the valve seat has been used for a long time, after the first fixing ring 5 and the second fixing ring 6 are worn, the fixing bolt 8 is removed and the first limit block 3 and the second limit block 4 are replaced, thereby reducing the use cost and improving the use effect.

[0024] According to the above working process, it can be known that: through the arrangement of the installation groove 2, the first limit block 3, the second limit block 4, the first fixing ring 5, the second fixing ring 6, the threaded hole 7 and the fixing bolt 8 and other structures, after the first fixing ring 5 and the second fixing ring 6 are worn, it is convenient to disassemble and replace, thereby reducing the cost of use. Through the arrangement of the circular hole groove 9, the fixing bolt 8 is hidden. Through the arrangement of the oil filling hole 12, it is convenient to fill oil into the interior. Through the arrangement of the sealing ring 13 and the sealing groove 14, the connection sealing is enhanced.

[0025] like Figure 1 , Figure 2 and Figure 3 As shown, it is worth explaining in detail that one end of the first fixing ring 5 is abutted against one end of the second fixing ring 6, and the inner surface and the outer surface of the seat body 1 are both provided with a heat-resistant layer, and the heat-resistant layer is made of nano-porous heat-insulating material. Through the setting of the heat-resistant layer, the high temperature resistance of the valve seat is improved, and a limiting column 10 is fixedly installed on one side of the first limiting block 3 and the second limiting block 4, and a limiting hole 11 is provided inside the mounting groove 2. The limiting column 10 and the limiting hole 11 are movably connected, and the setting of the limiting column 10 and the limiting hole 11 plays a limiting role in the installation of the first fixing ring 5 and the second fixing ring 6.

[0026] In summary: through the arrangement of the installation groove 2, the first limit block 3, the second limit block 4, the first fixing ring 5, the second fixing ring 6, the threaded hole 7 and the fixing bolt 8 and other structures, after the first fixing ring 5 and the second fixing ring 6 are worn, it is easy to disassemble and replace, thereby reducing the cost of use; through the arrangement of the circular hole groove 9, the fixing bolt 8 is hidden; through the arrangement of the limit column 10 and the limit hole 11, a limiting effect is played on the installation of the first fixing ring 5 and the second fixing ring 6; through the arrangement of the oil filling hole 12, it is convenient to fill oil into the interior; through the arrangement of the sealing ring 13 and the sealing groove 14, the connection sealing is enhanced; through the arrangement of the heat-resistant layer, the high temperature resistance of the valve seat is improved.

[0027] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

[0028] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A high temperature resistant powder metallurgy valve seat, comprising a seat body (1), It is characterized in that The top and bottom ends of the seat body (1) are both provided with mounting grooves (2), and a first limit block (3) and a second limit block (4) are respectively provided in the two mounting grooves (2), a first fixing ring (5) is fixedly installed on one end of the first limit block (3), and a second fixing ring (6) is fixedly installed on one end of the second limit block (4), and a plurality of threaded holes (7) are provided inside the mounting grooves (2), and fixing bolts (8) are threadedly installed on one side of the first limit block (3) and the second limit block (4), and the fixing bolts (8) are threadedly connected to the threaded holes (7).

2. A high temperature resistant powder metallurgy valve seat according to claim 1, Features: A circular hole groove (9) is provided on one side of the first limiting block (3) and the second limiting block (4), and the screw head of the fixing bolt (8) is located in the circular hole groove (9).

3. A high temperature resistant powder metallurgy valve seat according to claim 2, Features: A limiting column (10) is fixedly mounted on one side of the first limiting block (3) and the second limiting block (4); a limiting hole (11) is provided inside the mounting groove (2); and the limiting column (10) is movably plugged into the limiting hole (11).

4. A high temperature resistant powder metallurgy valve seat according to claim 3, Features: Oil filling holes (12) are provided on both sides of the seat body (1).

5. The high temperature resistant powder metallurgy valve seat according to claim 1, Features: A sealing ring (13) is fixedly mounted on one side of the first limiting block (3) and the second limiting block (4); a sealing groove (14) is provided inside the mounting groove (2); and the sealing ring (13) is adapted to fit the sealing groove (14).

6. The high temperature resistant powder metallurgy valve seat according to claim 1, Features: One end of the first fixing ring (5) is in contact with one end of the second fixing ring (6), and both the inner surface and the outer surface of the seat body (1) are provided with a heat-resistant layer, and the heat-resistant layer is made of nano-porous heat-insulating material.

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