Fireproof ball valve

Abstract

The utility model provides a fireproof ball valve which comprises a valve body, a valve ball and a valve seat are arranged in an inner cavity of the valve body respectively, a valve rod is arranged at the top of the valve ball, a gland and a handle are arranged on the outer side of the valve rod respectively, a fireproof mechanism is arranged on the outer side of the valve body, and the fireproof mechanism comprises a first fireproof shell and a second fireproof shell. The first fireproof shell and the second fireproof shell are both located on the outer side of the valve body, the outer sides of the first fireproof shell and the second fireproof shell are both fixedly connected with fixing blocks, fixing bolts are arranged in inner cavities of the fixing blocks, the outer sides of the fixing bolts are in threaded connection with fixing nuts, and the fireproof mechanism further comprises a high-temperature-resistant sealing ring. The fireproof ball valve solves the problems that an existing ball valve is poor in fireproof performance, the overall fireproof performance of the ball valve is improved by improving the fireproof performance of materials, but a sealing piece in the ball valve is still melted under long-time high-temperature combustion.

Description

Technical Field

[0001] This utility model relates to the field of ball valve technology, and in particular to a fireproof ball valve. Background Technology

[0002] A ball valve is a valve in which the opening and closing element (ball) is driven by the valve stem and rotates around the valve's axis. It can also be used for fluid regulation and control. Hard-seal V-type ball valves, with their V-shaped ball core and hard alloy-faced metal seat, possess strong shearing force, making them particularly suitable for media containing fibers, small solid particles, etc. Multi-port ball valves not only flexibly control the merging, splitting, and switching of flow directions in pipelines, but also allow the closure of any channel while connecting the other two.

[0003] Ball valves are used in various pipeline transportation applications. However, existing ball valves have poor fire resistance. Most of them improve the overall fire resistance of the ball valve by improving the fire resistance of the materials. However, under prolonged high-temperature combustion, the seals inside the ball valve will still melt, causing inconvenience to users. Therefore, it is necessary to provide a fireproof ball valve to solve the above-mentioned technical problems. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a high-temperature resistant fireproof ball valve.

[0005] The fireproof ball valve provided by this utility model includes a valve body, in which a valve ball and a valve seat are respectively provided in the inner cavity of the valve body, a valve stem is provided on the top of the valve ball, a pressure cap and a handle are respectively provided on the outer side of the valve stem, and a fireproof mechanism is provided on the outer side of the valve body.

[0006] In a preferred embodiment of the present invention, a fireproof ball valve is provided, wherein the fireproof mechanism includes a first fireproof shell and a second fireproof shell, both of which are located on the outside of the valve body. A fixing block is fixedly connected to the outside of both the first and second fireproof shells, and a fixing bolt is provided in the inner cavity of the fixing block. A fixing nut is threadedly connected to the outside of the fixing bolt.

[0007] As a fireproof ball valve provided by this utility model, preferably, the fireproof mechanism further includes a high-temperature resistant sealing ring, and the inner sides of the first fireproof shell and the second fireproof shell are both fixedly connected with the high-temperature resistant sealing ring.

[0008] As provided by this utility model, a fireproof ball valve is preferably provided in which the first fireproof shell includes an outer shell and an inner shell, and a heat-insulating filler is provided between the outer shell and the inner shell.

[0009] In a preferred embodiment of the present invention, an auxiliary block is fixedly connected to the inner side of both the first and second fireproof shells, and an auxiliary plate is fixedly connected to the outer side of the auxiliary block.

[0010] As a fireproof ball valve provided by this utility model, preferably, a docking block is fixedly connected to one side of the first fireproof shell, and a docking groove is opened on one side of the second fireproof shell, and the outer side of the docking block is engaged with the inner cavity of the docking groove.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] This fireproof ball valve, through the installation of a first and second fireproof shell, avoids direct contact between the valve body and high-temperature flames. In high-temperature environments, the first and second fireproof shells provide protection for the valve body, thereby improving its high-temperature resistance. The first and second fireproof shells are fixed to the outside of the valve body using fixing blocks, bolts, and nuts, facilitating user disassembly and replacement of any damaged shells. Both the outer and inner shells are made of titanium alloy, which not only has low thermal conductivity but also excellent high-temperature resistance. This addresses the problem of existing ball valves having poor fire resistance, which is often improved by enhancing the fire resistance of materials, but the internal seals still melt under prolonged high-temperature combustion. Attached Figure Description

[0013] Figure 1 A schematic diagram of a preferred embodiment of the fireproof ball valve provided by this utility model;

[0014] Figure 2 This is a schematic diagram of the valve body of this utility model;

[0015] Figure 3 This is a schematic diagram of the structure of the first and second fireproof shells of this utility model;

[0016] Figure 4 This is a side view of the fire-resistant mechanism of this utility model;

[0017] Figure 5 This is a schematic diagram of the cross-sectional structure of the first fireproof shell of this utility model.

[0018] The following are the labels in the diagram: 1. Valve body; 2. Valve ball; 3. Valve seat; 4. Valve stem; 5. Gland; 6. Handle; 7. Fireproof mechanism; 701. First fireproof shell; 7011. Outer shell; 7012. Inner shell; 7013. Heat-insulating packing; 702. Second fireproof shell; 703. Fixing block; 704. Fixing bolt; 705. Fixing nut; 706. High-temperature resistant sealing ring; 8. Auxiliary block; 9. Auxiliary plate; 10. Connecting block; 11. Connecting groove. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Please refer to the following: Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 ,in Figure 1 A schematic diagram of a preferred embodiment of the fireproof ball valve provided by this utility model; Figure 2 This is a schematic diagram of the valve body of this utility model; Figure 3 This is a schematic diagram of the structure of the first and second fireproof shells of this utility model; Figure 4 This is a side view of the fire-resistant mechanism of this utility model; Figure 5 This is a cross-sectional structural diagram of the first fireproof shell of this utility model. A fireproof ball valve includes a valve body 1, a valve ball 2 and a valve seat 3 respectively disposed in the inner cavity of the valve body 1, a valve stem 4 disposed on the top of the valve ball 2, a pressure cap 5 and a handle 6 respectively disposed on the outer side of the valve stem 4, and a fireproof mechanism 7 disposed on the outer side of the valve body 1.

[0021] As a technical optimization of this utility model, the fireproof mechanism 7 includes a first fireproof shell 701 and a second fireproof shell 702. Both the first fireproof shell 701 and the second fireproof shell 702 are located on the outside of the valve body 1. A fixing block 703 is fixedly connected to the outside of both the first fireproof shell 701 and the second fireproof shell 702. A fixing bolt 704 is provided in the inner cavity of the fixing block 703. A fixing nut 705 is threadedly connected to the outside of the fixing bolt 704.

[0022] In this embodiment: by setting the first fireproof shell 701 and the second fireproof shell 702, the valve body 1 can be prevented from directly contacting the high-temperature flame. In a high-temperature environment, the first fireproof shell 701 and the second fireproof shell 702 can provide protection for the valve body 1, thereby improving the high-temperature resistance of the valve body 1. The first fireproof shell 701 and the second fireproof shell 702 are fixed to the outside of the valve body 1 by the fixing block 703, the fixing bolt 704 and the fixing nut 705, which makes it easy for the user to disassemble and install, and also makes it easy to replace the damaged first fireproof shell 701 and the second fireproof shell 702 in the future.

[0023] As a technical optimization of this utility model, the fireproof mechanism 7 also includes a high-temperature resistant sealing ring 706, and the high-temperature resistant sealing ring 706 is fixedly connected to the inner side of the first fireproof shell 701 and the second fireproof shell 702.

[0024] In this embodiment, by setting a high-temperature resistant sealing ring 706, the sealing effect of the contact surface between the first fireproof shell 701 and the second fireproof shell 702 and the valve body 1 is improved.

[0025] As a technical optimization of this utility model, the first fireproof shell 701 includes an outer shell 7011 and an inner shell 7012, and a heat insulation filler 7013 is provided between the outer shell 7011 and the inner shell 7012.

[0026] In this embodiment: both the outer shell 7011 and the inner shell 7012 are made of titanium alloy. Titanium alloy not only has a low thermal conductivity, but also has excellent high temperature resistance. By setting the outer shell 7011 and the inner shell 7012, the damage of high temperature to the valve body 1 can be greatly reduced. In addition, the heat insulation filler 7013 is aluminum silicate fiber. Aluminum silicate fiber has the advantages of high temperature resistance, good thermal stability, low thermal conductivity, small heat capacity, good resistance to mechanical vibration, small thermal expansion, and good heat insulation performance, which can further provide protection for the valve body 1. The second fireproof shell 702 has the same structure as the first fireproof shell 701.

[0027] As a technical optimization of this utility model, auxiliary blocks 8 are fixedly connected to the inner sides of both the first fireproof shell 701 and the second fireproof shell 702, and auxiliary plates 9 are fixedly connected to the outer sides of the auxiliary blocks 8.

[0028] In this embodiment, by setting auxiliary block 8 and auxiliary plate 9, the connection stability between the first fireproof shell 701 and the second fireproof shell 702 and the valve body 1 can be improved.

[0029] As a technical optimization of this utility model, a docking block 10 is fixedly connected to one side of the first fireproof shell 701, and a docking groove 11 is opened on one side of the second fireproof shell 702. The outer side of the docking block 10 is engaged with the inner cavity of the docking groove 11.

[0030] In this embodiment, by setting the docking groove 11 and the docking block 10, the first fireproof shell 701 and the second fireproof shell 702 can be docked and fixed.

[0031] The working principle of the fireproof ball valve provided by this utility model is as follows:

[0032] This device, by incorporating a first fireproof shell 701 and a second fireproof shell 702, prevents the valve body 1 from directly contacting high-temperature flames. In high-temperature environments, the first fireproof shell 701 and the second fireproof shell 702 provide protection for the valve body 1, thereby improving its high-temperature resistance. Furthermore, the first fireproof shell 701 and the second fireproof shell 702 are fixed to the outside of the valve body 1 via a fixing block 703, a fixing bolt 704, and a fixing nut 705, facilitating user disassembly and assembly, and making it easy to repair any damage to the first fireproof shell 701 and the second fireproof shell 702 later. The second fireproof shell 702 is replaced, and both the outer shell 7011 and the inner shell 7012 are made of titanium alloy. Titanium alloy not only has a low thermal conductivity, but also has excellent high temperature resistance. By setting the outer shell 7011 and the inner shell 7012, the damage of high temperature to valve body 1 can be greatly reduced. The heat insulation filler 7013 is made of aluminum silicate fiber. Aluminum silicate fiber has the advantages of high temperature resistance, good thermal stability, low thermal conductivity, small heat capacity, good resistance to mechanical vibration, small thermal expansion, and good heat insulation performance, which can further provide protection for valve body 1.

[0033] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A fireproof ball valve, characterized in that, The valve body (1) includes a valve ball (2) and a valve seat (3) in its inner cavity. A valve stem (4) is provided on the top of the valve ball (2). A pressure cap (5) and a handle (6) are provided on the outer side of the valve stem (4). A fireproof mechanism (7) is provided on the outer side of the valve body (1).

2. The fireproof ball valve according to claim 1, characterized in that, The fireproof mechanism (7) includes a first fireproof shell (701) and a second fireproof shell (702). The first fireproof shell (701) and the second fireproof shell (702) are both located on the outside of the valve body (1). A fixing block (703) is fixedly connected to the outside of the first fireproof shell (701) and the second fireproof shell (702). A fixing bolt (704) is provided in the inner cavity of the fixing block (703). A fixing nut (705) is threadedly connected to the outside of the fixing bolt (704).

3. The fireproof ball valve according to claim 2, characterized in that, The fireproof mechanism (7) also includes a high-temperature resistant sealing ring (706), and the inner sides of the first fireproof shell (701) and the second fireproof shell (702) are both fixedly connected with the high-temperature resistant sealing ring (706).

4. The fireproof ball valve according to claim 2, characterized in that, The first fireproof shell (701) includes an outer shell (7011) and an inner shell (7012), and a heat-insulating filler (7013) is provided between the outer shell (7011) and the inner shell (7012).

5. The fireproof ball valve according to claim 2, characterized in that, An auxiliary block (8) is fixedly connected to the inner side of both the first fireproof shell (701) and the second fireproof shell (702), and an auxiliary plate (9) is fixedly connected to the outer side of the auxiliary block (8).

6. The fireproof ball valve according to claim 2, characterized in that, A docking block (10) is fixedly connected to one side of the first fireproof shell (701), and a docking groove (11) is provided on one side of the second fireproof shell (702). The outer side of the docking block (10) is engaged with the inner cavity of the docking groove (11).

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