A split-resistant plug valve casting device

Abstract

The utility model relates to a technical field related to plug valve, especially a kind of anti-cracking plug valve casting device, including riser, plug valve body, inner gate, cross gate, direct gate, fixed mechanism and filtering mechanism, the bottom of the riser is provided with plug valve body, the bottom of plug valve body is provided with inner gate, one end of the inner gate is connected with cross gate, the other end of cross gate is connected with direct gate, the inside of direct gate is provided with fixed mechanism, the inside of direct gate is provided with filtering mechanism.This kind of anti-cracking plug valve casting device, the molten steel enters direct gate through cross gate into inner gate and directly into valve body, thereby ensuring that casting will not be sand washing, ensuring that casting will not produce sand eye and shrinkage, to improve casting quality, thereby ensuring to reduce casting internal cavity sand eye and slag inclusion to improve the quality of casting.

Description

Technical Field

[0001] This utility model relates to the technical field of plug valves, and in particular to a crack-resistant plug valve casting device. Background Technology

[0002] A plug valve is a rotary valve with a shut-off element or plunger-shaped component. It opens or closes by rotating 90 degrees to connect or separate the passage on the plug with the passage on the valve body. During production, plug valves require casting equipment. However, plug valves are prone to internal shrinkage and cracking defects. The valve body has many ribs and numerous intersecting thin and thick walls, making it susceptible to internal shrinkage and cracking defects at these junctions. Furthermore, the difference between the thicker portion of the valve body and the wall thickness is significant, leading to a severe tendency for solidification heat cracking. As a pressure vessel, the plug valve body is prone to leakage during use, thus requiring high internal quality. Therefore, a crack-resistant plug valve casting device is particularly needed.

[0003] Currently, in traditional plug valve casting equipment, the valve body is fed into the sprue at a 45-degree angle. This causes the molten steel to enter the valve body unstably, making it prone to sandblasting and bottom shortening, resulting in more casting defects and affecting the overall quality and performance of the plug valve. Therefore, the cast plug valve needs to be further processed and treated to improve its crack resistance. However, this not only increases production costs but also reduces production efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a crack-resistant plug valve casting device to solve the existing problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a crack-resistant plug valve casting device, comprising a riser, a plug valve body, an ingate, a runner, a sprue, a sprue, a fixing mechanism, and a filtering mechanism. The bottom of the riser is provided with the plug valve body, the bottom of the plug valve body is provided with the ingate, one end of the ingate is connected to the runner, the other end of the runner is connected to the sprue, the inside of the sprue is provided with the fixing mechanism, and the inside of the sprue is provided with the filtering mechanism.

[0006] The fixing mechanism includes a fixing bolt, a spring, a pressure plate, a push rod, a push block, and a fixing ball. The fixing bolt is installed inside the sprue, and a spring is installed on the fixing bolt. The other end of the spring is connected to the pressure plate. A push rod is installed inside the spring, and a push block is installed on the outer wall of the push rod. A fixing ball is installed inside the fixing bolt.

[0007] Preferably, the filtration mechanism includes a filter shell, a mounting groove, a filter plate, and a sealing ring. The filter shell is disposed inside the direct casting channel, the mounting groove is formed on the inner wall of the filter shell, the filter plate is disposed inside the mounting groove, and the sealing ring is fitted on the outer wall of the filter plate.

[0008] Preferably, the spring and the pressure plate form a telescopic structure, and two push blocks are provided, which are equidistantly arranged on the outer wall of the push rod.

[0009] Preferably, the push rod is symmetrically arranged about the central axis of the pressure plate, and the two ends of the spring are respectively connected to the pressure plate and the fixing bolt.

[0010] Preferably, the outer wall size of the fixing ball matches the inner wall size of the fixing bolt, and two fixing balls are provided, which are symmetrically arranged about the central axis of the pressure plate.

[0011] Preferably, the outer wall dimensions of the filter plate match the inner wall dimensions of the mounting groove, and the inner wall dimensions of the sealing ring match the outer wall dimensions of the filter plate.

[0012] Preferably, multiple filter plates are provided and are evenly spaced inside the filter housing.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: This anti-crack plug valve casting device allows molten steel to enter the sprue, then the gating system, and finally the valve body, thereby ensuring that the casting will not be sand-washed, preventing sand holes and shrinkage porosity, thus improving the quality of the casting. This also reduces sand holes and slag inclusions in the casting cavity, further enhancing the quality of the casting. Furthermore, the device is equipped with a fixing mechanism to securely fix the plug valve body during the casting process, preventing displacement or deformation of the sprue during casting. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall appearance and structure of the present utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the horizontal and vertical sprues used in conjunction with the present invention;

[0016] Figure 3 This is a schematic diagram of the fixing mechanism of this utility model;

[0017] Figure 4 This is a schematic diagram of the filter mechanism of this utility model.

[0018] In the diagram: 1. Riser; 2. Plug valve body; 3. Ingate; 4. Stream runner; 5. Sprue; 6. Fixing mechanism; 61. Fixing bolt; 62. Spring; 63. Pressure plate; 64. Push rod; 65. Push block; 66. Fixing ball; 7. Filtering mechanism; 71. Filter housing; 72. Mounting groove; 73. Filter plate; 74. Sealing ring. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1-4 This utility model provides a technical solution: a crack-resistant plug valve casting device, including a riser 1, a plug valve body 2, an ingate 3, a horizontal sprue 4, a vertical sprue 5, a fixing mechanism 6, and a filtering mechanism 7. The bottom of the riser 1 is provided with the plug valve body 2, the bottom of the plug valve body 2 is provided with the ingate 3, one end of the ingate 3 is connected to the horizontal sprue 4, the other end of the horizontal sprue 4 is connected to the vertical sprue 5, the fixing mechanism 6 is provided inside the vertical sprue 5, and the filtering mechanism 7 is provided inside the vertical sprue 5.

[0021] The fixing mechanism 6 includes a fixing bolt 61, a spring 62, a pressure plate 63, a push rod 64, a push block 65, and a fixing ball 66. The fixing bolt 61 is installed inside the sprue 5, and the spring 62 is installed on the fixing bolt 61. The other end of the spring 62 is connected to the pressure plate 63. The push rod 64 is installed inside the spring 62, and the push block 65 is installed on the outer wall of the push rod 64. The fixing ball 66 is installed inside the fixing bolt 61. With the arrangement of the fixing bolt 61, spring 62, pressure plate 63, push rod 64, push block 65, and fixing ball 66, when casting through the sprue 5, the push block 65 first pushes the pressure plate 63 downward. At this time, the spring 62 is compressed by force, and at the same time, the push rod 64 drives the fixing ball 66 to move closer to the inner wall of the sprue 5 until the outer wall of the fixing ball 66 is tightly attached to the inner wall of the sprue 5. At this time, the fixing ball 66 fixes the sprue 5, preventing the sprue 5 from shifting or deforming during the casting process, thus improving the stability of the casting.

[0022] Furthermore, the filtering mechanism 7 includes a filter shell 71, a mounting groove 72, a filter plate 73, and a sealing ring 74. The filter shell 71 is installed inside the sprue 5, and the mounting groove 72 is opened on the inner wall of the filter shell 71. The filter plate 73 is installed inside the mounting groove 72, and the sealing ring 74 is fitted on the outer wall of the filter plate 73. Through the arrangement of the filter shell 71, mounting groove 72, filter plate 73, and sealing ring 74, molten steel enters the filter shell 71 through the sprue 5 during use. At this time, the filter plate 73 filters impurities in the molten steel, preventing impurities from entering the valve body 2 of the stopcock valve, thus improving the casting quality of the valve body 2. At the same time, the sealing ring 74 improves the sealing between the filter plate 73 and the mounting groove 72, preventing molten steel from seeping out from the gap between the filter plate 73 and the mounting groove 72, further improving the stability of the casting.

[0023] Furthermore, the spring 62 and the pressure plate 63 form a telescopic structure, and two push blocks 65 are provided, which are equidistantly arranged on the outer wall of the push rod 64. Through the arrangement of the spring 62, the push rod 64 can drive the pressure plate 63 to perform stable telescopic movement when subjected to force, thereby ensuring that the fixed ball 66 can fit tightly against the inner wall of the straight sprue 5, improving the stability and reliability of the fixation.

[0024] Furthermore, the push rod 64 is symmetrically arranged with respect to the central axis of the pressure plate 63, and the two ends of the spring 62 are connected to the pressure plate 63 and the fixing bolt 61 respectively. Through the arrangement of the push rod 64, the two fixing balls 66 can simultaneously approach the inner wall of the sprue 5, thereby improving the uniformity and stability of the fixing and ensuring that the sprue 5 will not shift or deform during the casting process.

[0025] Furthermore, the outer wall dimensions of the fixing ball 66 match the inner wall dimensions of the fixing bolt 61. Two fixing balls 66 are provided and are symmetrically arranged around the central axis of the pressure plate 63. By setting the fixing balls 66, the fixing balls 66 can fit tightly against the inner wall of the straight sprue 5 when under force, which increases the firmness and stability of the fixation.

[0026] Furthermore, the outer wall dimensions of the filter plate 73 match the inner wall dimensions of the mounting groove 72, and the inner wall dimensions of the sealing ring 74 match the outer wall dimensions of the filter plate 73. By setting the sealing ring 74, the tightness between the filter plate 73 and the mounting groove 72 is improved, effectively preventing the leakage of molten steel during the filtration process, and further ensuring the quality and efficiency of casting.

[0027] Furthermore, multiple filter plates 73 are provided and are equally spaced inside the filter housing 71. Through the arrangement of the filter plates 73, impurities in the molten steel can be filtered multiple times, further improving the filtration effect of impurities and ensuring the casting quality of the plug valve body 2.

[0028] Working principle: During casting through the sprue 5, the pressure plate 63 is first pushed downward by the pusher block 65. At this time, the spring 62 is compressed by force, and the push rod 64 drives the fixed ball 66 to approach the inner wall of the sprue 5 until the outer wall of the fixed ball 66 is tightly attached to the inner wall of the sprue 5. At this time, the fixed ball 66 fixes the sprue 5, preventing it from shifting or deforming during the casting process, thus improving the casting stability. In use, molten steel enters the filter shell 71 through the sprue 5. At this time, the filter plate 73 filters impurities in the molten steel, preventing impurities from entering the valve body 2 of the plug valve, thus improving the casting quality of the valve body 2. At the same time, the setting of the sealing ring 74 improves the sealing between the filter plate 73 and the mounting groove 72, preventing molten steel from seeping out from the gap between the filter plate 73 and the mounting groove 72, further improving the casting stability.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A crack-resistant plug valve casting device, comprising a riser (1), a plug valve body (2), an ingate (3), a sprue (4), a sprue (5), a fixing mechanism (6), and a filtering mechanism (7), characterized in that: The bottom of the riser (1) is provided with a stopcock valve body (2), the bottom of the stopcock valve body (2) is provided with an ingate (3), one end of the ingate (3) is connected to the runner (4), the other end of the runner (4) is connected to the sprue (5), the sprue (5) is provided with a fixing mechanism (6), the sprue (5) is provided with a filtering mechanism (7); the fixing mechanism (6) includes a fixing bolt (61), a spring (62), a pressure plate (63), a push rod (64), a push block (65) and a fixing ball (66), the sprue (5) is provided with a fixing bolt (61), the fixing bolt (61) is provided with a spring (62), the other end of the spring (62) is connected to the pressure plate (63), the spring (62) is provided with a push rod (64) inside the spring (62), the push rod (64) is provided with a push block (65) on the outer wall of the push rod (64), and the fixing bolt (61) is provided with a fixing ball (66).

2. The anti-crack plug valve casting device according to claim 1, characterized in that: The filtration mechanism (7) includes a filter shell (71), a mounting groove (72), a filter plate (73), and a sealing ring (74). The filter shell (71) is provided inside the direct casting channel (5). The mounting groove (72) is provided on the inner wall of the filter shell (71). The filter plate (73) is provided inside the mounting groove (72). The sealing ring (74) is fitted on the outer wall of the filter plate (73).

3. The anti-crack plug valve casting device according to claim 1, characterized in that: The spring (62) and the pressure plate (63) form a telescopic structure. There are two push blocks (65), which are equidistantly arranged on the outer wall of the push rod (64).

4. The anti-crack plug valve casting device according to claim 1, characterized in that: The push rod (64) is symmetrically arranged with respect to the central axis of the pressure plate (63), and the two ends of the spring (62) are connected to the pressure plate (63) and the fixing bolt (61) respectively.

5. The anti-crack plug valve casting device according to claim 1, characterized in that: The outer wall size of the fixed ball (66) matches the inner wall size of the fixed bolt (61). There are two fixed balls (66), which are symmetrically arranged with respect to the central axis of the pressure plate (63).

6. The anti-crack plug valve casting device according to claim 2, characterized in that: The outer wall dimensions of the filter plate (73) match the inner wall dimensions of the mounting groove (72), and the inner wall dimensions of the sealing ring (74) match the outer wall dimensions of the filter plate (73).

7. The anti-crack plug valve casting device according to claim 2, characterized in that: Multiple filter plates (73) are provided and are equally spaced inside the filter housing (71).

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